2719 lines
96 KiB
Java
2719 lines
96 KiB
Java
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package org.json;
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/*
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Public Domain.
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*/
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import java.io.Closeable;
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import java.io.IOException;
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import java.io.StringWriter;
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import java.io.Writer;
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import java.lang.annotation.Annotation;
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import java.lang.reflect.Field;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.lang.reflect.Modifier;
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import java.math.BigDecimal;
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import java.math.BigInteger;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.Enumeration;
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import java.util.HashMap;
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import java.util.IdentityHashMap;
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import java.util.Iterator;
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import java.util.Locale;
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import java.util.Map;
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import java.util.Map.Entry;
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import java.util.ResourceBundle;
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import java.util.Set;
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import java.util.regex.Pattern;
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/**
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* A JSONObject is an unordered collection of name/value pairs. Its external
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* form is a string wrapped in curly braces with colons between the names and
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* values, and commas between the values and names. The internal form is an
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* object having <code>get</code> and <code>opt</code> methods for accessing
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* the values by name, and <code>put</code> methods for adding or replacing
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* values by name. The values can be any of these types: <code>Boolean</code>,
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* <code>JSONArray</code>, <code>JSONObject</code>, <code>Number</code>,
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* <code>String</code>, or the <code>JSONObject.NULL</code> object. A
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* JSONObject constructor can be used to convert an external form JSON text
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* into an internal form whose values can be retrieved with the
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* <code>get</code> and <code>opt</code> methods, or to convert values into a
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* JSON text using the <code>put</code> and <code>toString</code> methods. A
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* <code>get</code> method returns a value if one can be found, and throws an
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* exception if one cannot be found. An <code>opt</code> method returns a
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* default value instead of throwing an exception, and so is useful for
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* obtaining optional values.
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* <p>
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* The generic <code>get()</code> and <code>opt()</code> methods return an
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* object, which you can cast or query for type. There are also typed
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* <code>get</code> and <code>opt</code> methods that do type checking and type
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* coercion for you. The opt methods differ from the get methods in that they
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* do not throw. Instead, they return a specified value, such as null.
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* <p>
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* The <code>put</code> methods add or replace values in an object. For
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* example,
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*
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* <pre>
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* myString = new JSONObject()
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* .put("JSON", "Hello, World!").toString();
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* </pre>
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*
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* produces the string <code>{"JSON": "Hello, World"}</code>.
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* <p>
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* The texts produced by the <code>toString</code> methods strictly conform to
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* the JSON syntax rules. The constructors are more forgiving in the texts they
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* will accept:
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* <ul>
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* <li>An extra <code>,</code> <small>(comma)</small> may appear just
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* before the closing brace.</li>
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* <li>Strings may be quoted with <code>'</code> <small>(single
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* quote)</small>.</li>
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* <li>Strings do not need to be quoted at all if they do not begin with a
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* quote or single quote, and if they do not contain leading or trailing
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* spaces, and if they do not contain any of these characters:
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* <code>{ } [ ] / \ : , #</code> and if they do not look like numbers and
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* if they are not the reserved words <code>true</code>, <code>false</code>,
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* or <code>null</code>.</li>
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* </ul>
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*
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* @author JSON.org
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* @version 2016-08-15
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*/
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public class JSONObject {
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/**
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* JSONObject.NULL is equivalent to the value that JavaScript calls null,
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* whilst Java's null is equivalent to the value that JavaScript calls
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* undefined.
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*/
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private static final class Null {
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/**
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* There is only intended to be a single instance of the NULL object,
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* so the clone method returns itself.
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*
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* @return NULL.
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*/
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@Override
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protected final Object clone() {
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return this;
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}
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/**
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* A Null object is equal to the null value and to itself.
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*
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* @param object
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* An object to test for nullness.
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* @return true if the object parameter is the JSONObject.NULL object or
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* null.
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*/
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@Override
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@SuppressWarnings("lgtm[java/unchecked-cast-in-equals]")
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public boolean equals(Object object) {
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return object == null || object == this;
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}
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/**
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* A Null object is equal to the null value and to itself.
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*
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* @return always returns 0.
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*/
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@Override
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public int hashCode() {
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return 0;
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}
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/**
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* Get the "null" string value.
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*
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* @return The string "null".
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*/
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@Override
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public String toString() {
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return "null";
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}
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}
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/**
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* Regular Expression Pattern that matches JSON Numbers. This is primarily used for
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* output to guarantee that we are always writing valid JSON.
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*/
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static final Pattern NUMBER_PATTERN = Pattern.compile("-?(?:0|[1-9]\\d*)(?:\\.\\d+)?(?:[eE][+-]?\\d+)?");
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/**
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* The map where the JSONObject's properties are kept.
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*/
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private final Map<String, Object> map;
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public Class<? extends Map> getMapType() {
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return map.getClass();
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}
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/**
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* It is sometimes more convenient and less ambiguous to have a
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* <code>NULL</code> object than to use Java's <code>null</code> value.
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* <code>JSONObject.NULL.equals(null)</code> returns <code>true</code>.
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* <code>JSONObject.NULL.toString()</code> returns <code>"null"</code>.
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*/
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public static final Object NULL = new Null();
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/**
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* Construct an empty JSONObject.
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*/
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public JSONObject() {
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// HashMap is used on purpose to ensure that elements are unordered by
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// the specification.
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// JSON tends to be a portable transfer format to allows the container
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// implementations to rearrange their items for a faster element
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// retrieval based on associative access.
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// Therefore, an implementation mustn't rely on the order of the item.
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this.map = new HashMap<String, Object>();
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}
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/**
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* Construct a JSONObject from a subset of another JSONObject. An array of
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* strings is used to identify the keys that should be copied. Missing keys
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* are ignored.
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*
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* @param jo
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* A JSONObject.
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* @param names
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* An array of strings.
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*/
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public JSONObject(JSONObject jo, String ... names) {
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this(names.length);
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for (int i = 0; i < names.length; i += 1) {
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try {
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this.putOnce(names[i], jo.opt(names[i]));
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} catch (Exception ignore) {
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}
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}
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}
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/**
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* Construct a JSONObject from a JSONTokener.
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*
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* @param x
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* A JSONTokener object containing the source string.
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* @throws JSONException
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* If there is a syntax error in the source string or a
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* duplicated key.
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*/
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public JSONObject(JSONTokener x) throws JSONException {
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this();
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char c;
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String key;
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if (x.nextClean() != '{') {
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throw x.syntaxError("A JSONObject text must begin with '{'");
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}
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for (;;) {
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char prev = x.getPrevious();
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c = x.nextClean();
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switch (c) {
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case 0:
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throw x.syntaxError("A JSONObject text must end with '}'");
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case '}':
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return;
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case '{':
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case '[':
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if(prev=='{') {
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throw x.syntaxError("A JSON Object can not directly nest another JSON Object or JSON Array.");
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}
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// fall through
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default:
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x.back();
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key = x.nextValue().toString();
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}
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// The key is followed by ':'.
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c = x.nextClean();
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if (c != ':') {
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throw x.syntaxError("Expected a ':' after a key");
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}
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// Use syntaxError(..) to include error location
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if (key != null) {
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// Check if key exists
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/*
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if (this.opt(key) != null) {
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// key already exists
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throw x.syntaxError("Duplicate key \"" + key + "\"");
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}
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*/
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// Only add value if non-null
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Object value = x.nextValue();
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if (value!=null) {
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this.put(key, value);
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}
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}
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// Pairs are separated by ','.
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switch (x.nextClean()) {
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case ';':
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case ',':
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if (x.nextClean() == '}') {
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return;
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}
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x.back();
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break;
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case '}':
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return;
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default:
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throw x.syntaxError("Expected a ',' or '}'");
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}
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}
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}
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/**
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* Construct a JSONObject from a Map.
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*
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* @param m
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* A map object that can be used to initialize the contents of
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* the JSONObject.
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* @throws JSONException
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* If a value in the map is non-finite number.
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* @throws NullPointerException
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* If a key in the map is <code>null</code>
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*/
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public JSONObject(Map<?, ?> m) {
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if (m == null) {
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this.map = new HashMap<String, Object>();
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} else {
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this.map = new HashMap<String, Object>(m.size());
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for (final Entry<?, ?> e : m.entrySet()) {
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if(e.getKey() == null) {
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throw new NullPointerException("Null key.");
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}
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final Object value = e.getValue();
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if (value != null) {
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this.map.put(String.valueOf(e.getKey()), wrap(value));
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}
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}
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}
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}
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/**
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* Construct a JSONObject from an Object using bean getters. It reflects on
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* all of the public methods of the object. For each of the methods with no
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* parameters and a name starting with <code>"get"</code> or
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* <code>"is"</code> followed by an uppercase letter, the method is invoked,
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* and a key and the value returned from the getter method are put into the
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* new JSONObject.
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* <p>
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* The key is formed by removing the <code>"get"</code> or <code>"is"</code>
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* prefix. If the second remaining character is not upper case, then the
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* first character is converted to lower case.
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* <p>
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* Methods that are <code>static</code>, return <code>void</code>,
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* have parameters, or are "bridge" methods, are ignored.
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* <p>
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* For example, if an object has a method named <code>"getName"</code>, and
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* if the result of calling <code>object.getName()</code> is
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* <code>"Larry Fine"</code>, then the JSONObject will contain
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* <code>"name": "Larry Fine"</code>.
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* <p>
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* The {@link JSONPropertyName} annotation can be used on a bean getter to
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* override key name used in the JSONObject. For example, using the object
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* above with the <code>getName</code> method, if we annotated it with:
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* <pre>
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* @JSONPropertyName("FullName")
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* public String getName() { return this.name; }
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* </pre>
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* The resulting JSON object would contain <code>"FullName": "Larry Fine"</code>
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* <p>
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* Similarly, the {@link JSONPropertyName} annotation can be used on non-
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* <code>get</code> and <code>is</code> methods. We can also override key
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* name used in the JSONObject as seen below even though the field would normally
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* be ignored:
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* <pre>
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* @JSONPropertyName("FullName")
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* public String fullName() { return this.name; }
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* </pre>
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* The resulting JSON object would contain <code>"FullName": "Larry Fine"</code>
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* <p>
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* The {@link JSONPropertyIgnore} annotation can be used to force the bean property
|
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* to not be serialized into JSON. If both {@link JSONPropertyIgnore} and
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* {@link JSONPropertyName} are defined on the same method, a depth comparison is
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* performed and the one closest to the concrete class being serialized is used.
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* If both annotations are at the same level, then the {@link JSONPropertyIgnore}
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* annotation takes precedent and the field is not serialized.
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* For example, the following declaration would prevent the <code>getName</code>
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* method from being serialized:
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* <pre>
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* @JSONPropertyName("FullName")
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* @JSONPropertyIgnore
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* public String getName() { return this.name; }
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* </pre>
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* <p>
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*
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* @param bean
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* An object that has getter methods that should be used to make
|
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* a JSONObject.
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*/
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public JSONObject(Object bean) {
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this();
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this.populateMap(bean);
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}
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private JSONObject(Object bean, Set<Object> objectsRecord) {
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this();
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this.populateMap(bean, objectsRecord);
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}
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/**
|
||
|
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* Construct a JSONObject from an Object, using reflection to find the
|
||
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* public members. The resulting JSONObject's keys will be the strings from
|
||
|
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* the names array, and the values will be the field values associated with
|
||
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* those keys in the object. If a key is not found or not visible, then it
|
||
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* will not be copied into the new JSONObject.
|
||
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*
|
||
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* @param object
|
||
|
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* An object that has fields that should be used to make a
|
||
|
|
* JSONObject.
|
||
|
|
* @param names
|
||
|
|
* An array of strings, the names of the fields to be obtained
|
||
|
|
* from the object.
|
||
|
|
*/
|
||
|
|
public JSONObject(Object object, String ... names) {
|
||
|
|
this(names.length);
|
||
|
|
Class<?> c = object.getClass();
|
||
|
|
for (int i = 0; i < names.length; i += 1) {
|
||
|
|
String name = names[i];
|
||
|
|
try {
|
||
|
|
this.putOpt(name, c.getField(name).get(object));
|
||
|
|
} catch (Exception ignore) {
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Construct a JSONObject from a source JSON text string. This is the most
|
||
|
|
* commonly used JSONObject constructor.
|
||
|
|
*
|
||
|
|
* @param source
|
||
|
|
* A string beginning with <code>{</code> <small>(left
|
||
|
|
* brace)</small> and ending with <code>}</code>
|
||
|
|
* <small>(right brace)</small>.
|
||
|
|
* @exception JSONException
|
||
|
|
* If there is a syntax error in the source string or a
|
||
|
|
* duplicated key.
|
||
|
|
*/
|
||
|
|
public JSONObject(String source) throws JSONException {
|
||
|
|
this(new JSONTokener(source));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Construct a JSONObject from a ResourceBundle.
|
||
|
|
*
|
||
|
|
* @param baseName
|
||
|
|
* The ResourceBundle base name.
|
||
|
|
* @param locale
|
||
|
|
* The Locale to load the ResourceBundle for.
|
||
|
|
* @throws JSONException
|
||
|
|
* If any JSONExceptions are detected.
|
||
|
|
*/
|
||
|
|
public JSONObject(String baseName, Locale locale) throws JSONException {
|
||
|
|
this();
|
||
|
|
ResourceBundle bundle = ResourceBundle.getBundle(baseName, locale,
|
||
|
|
Thread.currentThread().getContextClassLoader());
|
||
|
|
|
||
|
|
// Iterate through the keys in the bundle.
|
||
|
|
|
||
|
|
Enumeration<String> keys = bundle.getKeys();
|
||
|
|
while (keys.hasMoreElements()) {
|
||
|
|
Object key = keys.nextElement();
|
||
|
|
if (key != null) {
|
||
|
|
|
||
|
|
// Go through the path, ensuring that there is a nested JSONObject for each
|
||
|
|
// segment except the last. Add the value using the last segment's name into
|
||
|
|
// the deepest nested JSONObject.
|
||
|
|
|
||
|
|
String[] path = ((String) key).split("\\.");
|
||
|
|
int last = path.length - 1;
|
||
|
|
JSONObject target = this;
|
||
|
|
for (int i = 0; i < last; i += 1) {
|
||
|
|
String segment = path[i];
|
||
|
|
JSONObject nextTarget = target.optJSONObject(segment);
|
||
|
|
if (nextTarget == null) {
|
||
|
|
nextTarget = new JSONObject();
|
||
|
|
target.put(segment, nextTarget);
|
||
|
|
}
|
||
|
|
target = nextTarget;
|
||
|
|
}
|
||
|
|
target.put(path[last], bundle.getString((String) key));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Constructor to specify an initial capacity of the internal map. Useful for library
|
||
|
|
* internal calls where we know, or at least can best guess, how big this JSONObject
|
||
|
|
* will be.
|
||
|
|
*
|
||
|
|
* @param initialCapacity initial capacity of the internal map.
|
||
|
|
*/
|
||
|
|
protected JSONObject(int initialCapacity){
|
||
|
|
this.map = new HashMap<String, Object>(initialCapacity);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Accumulate values under a key. It is similar to the put method except
|
||
|
|
* that if there is already an object stored under the key then a JSONArray
|
||
|
|
* is stored under the key to hold all of the accumulated values. If there
|
||
|
|
* is already a JSONArray, then the new value is appended to it. In
|
||
|
|
* contrast, the put method replaces the previous value.
|
||
|
|
*
|
||
|
|
* If only one value is accumulated that is not a JSONArray, then the result
|
||
|
|
* will be the same as using put. But if multiple values are accumulated,
|
||
|
|
* then the result will be like append.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @param value
|
||
|
|
* An object to be accumulated under the key.
|
||
|
|
* @return this.
|
||
|
|
* @throws JSONException
|
||
|
|
* If the value is non-finite number.
|
||
|
|
* @throws NullPointerException
|
||
|
|
* If the key is <code>null</code>.
|
||
|
|
*/
|
||
|
|
public JSONObject accumulate(String key, Object value) throws JSONException {
|
||
|
|
testValidity(value);
|
||
|
|
Object object = this.opt(key);
|
||
|
|
if (object == null) {
|
||
|
|
this.put(key,
|
||
|
|
value instanceof JSONArray ? new JSONArray().put(value)
|
||
|
|
: value);
|
||
|
|
} else if (object instanceof JSONArray) {
|
||
|
|
((JSONArray) object).put(value);
|
||
|
|
} else {
|
||
|
|
this.put(key, new JSONArray().put(object).put(value));
|
||
|
|
}
|
||
|
|
return this;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Append values to the array under a key. If the key does not exist in the
|
||
|
|
* JSONObject, then the key is put in the JSONObject with its value being a
|
||
|
|
* JSONArray containing the value parameter. If the key was already
|
||
|
|
* associated with a JSONArray, then the value parameter is appended to it.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @param value
|
||
|
|
* An object to be accumulated under the key.
|
||
|
|
* @return this.
|
||
|
|
* @throws JSONException
|
||
|
|
* If the value is non-finite number or if the current value associated with
|
||
|
|
* the key is not a JSONArray.
|
||
|
|
* @throws NullPointerException
|
||
|
|
* If the key is <code>null</code>.
|
||
|
|
*/
|
||
|
|
public JSONObject append(String key, Object value) throws JSONException {
|
||
|
|
testValidity(value);
|
||
|
|
Object object = this.opt(key);
|
||
|
|
if (object == null) {
|
||
|
|
this.put(key, new JSONArray().put(value));
|
||
|
|
} else if (object instanceof JSONArray) {
|
||
|
|
this.put(key, ((JSONArray) object).put(value));
|
||
|
|
} else {
|
||
|
|
throw wrongValueFormatException(key, "JSONArray", null, null);
|
||
|
|
}
|
||
|
|
return this;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Produce a string from a double. The string "null" will be returned if the
|
||
|
|
* number is not finite.
|
||
|
|
*
|
||
|
|
* @param d
|
||
|
|
* A double.
|
||
|
|
* @return A String.
|
||
|
|
*/
|
||
|
|
public static String doubleToString(double d) {
|
||
|
|
if (Double.isInfinite(d) || Double.isNaN(d)) {
|
||
|
|
return "null";
|
||
|
|
}
|
||
|
|
|
||
|
|
// Shave off trailing zeros and decimal point, if possible.
|
||
|
|
|
||
|
|
String string = Double.toString(d);
|
||
|
|
if (string.indexOf('.') > 0 && string.indexOf('e') < 0
|
||
|
|
&& string.indexOf('E') < 0) {
|
||
|
|
while (string.endsWith("0")) {
|
||
|
|
string = string.substring(0, string.length() - 1);
|
||
|
|
}
|
||
|
|
if (string.endsWith(".")) {
|
||
|
|
string = string.substring(0, string.length() - 1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return string;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the value object associated with a key.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @return The object associated with the key.
|
||
|
|
* @throws JSONException
|
||
|
|
* if the key is not found.
|
||
|
|
*/
|
||
|
|
public Object get(String key) throws JSONException {
|
||
|
|
if (key == null) {
|
||
|
|
throw new JSONException("Null key.");
|
||
|
|
}
|
||
|
|
Object object = this.opt(key);
|
||
|
|
if (object == null) {
|
||
|
|
throw new JSONException("JSONObject[" + quote(key) + "] not found.");
|
||
|
|
}
|
||
|
|
return object;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the enum value associated with a key.
|
||
|
|
*
|
||
|
|
* @param <E>
|
||
|
|
* Enum Type
|
||
|
|
* @param clazz
|
||
|
|
* The type of enum to retrieve.
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @return The enum value associated with the key
|
||
|
|
* @throws JSONException
|
||
|
|
* if the key is not found or if the value cannot be converted
|
||
|
|
* to an enum.
|
||
|
|
*/
|
||
|
|
public <E extends Enum<E>> E getEnum(Class<E> clazz, String key) throws JSONException {
|
||
|
|
E val = optEnum(clazz, key);
|
||
|
|
if(val==null) {
|
||
|
|
// JSONException should really take a throwable argument.
|
||
|
|
// If it did, I would re-implement this with the Enum.valueOf
|
||
|
|
// method and place any thrown exception in the JSONException
|
||
|
|
throw wrongValueFormatException(key, "enum of type " + quote(clazz.getSimpleName()), opt(key), null);
|
||
|
|
}
|
||
|
|
return val;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the boolean value associated with a key.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @return The truth.
|
||
|
|
* @throws JSONException
|
||
|
|
* if the value is not a Boolean or the String "true" or
|
||
|
|
* "false".
|
||
|
|
*/
|
||
|
|
public boolean getBoolean(String key) throws JSONException {
|
||
|
|
Object object = this.get(key);
|
||
|
|
if (object.equals(Boolean.FALSE)
|
||
|
|
|| (object instanceof String && ((String) object)
|
||
|
|
.equalsIgnoreCase("false"))) {
|
||
|
|
return false;
|
||
|
|
} else if (object.equals(Boolean.TRUE)
|
||
|
|
|| (object instanceof String && ((String) object)
|
||
|
|
.equalsIgnoreCase("true"))) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
throw wrongValueFormatException(key, "Boolean", object, null);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the BigInteger value associated with a key.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @return The numeric value.
|
||
|
|
* @throws JSONException
|
||
|
|
* if the key is not found or if the value cannot
|
||
|
|
* be converted to BigInteger.
|
||
|
|
*/
|
||
|
|
public BigInteger getBigInteger(String key) throws JSONException {
|
||
|
|
Object object = this.get(key);
|
||
|
|
BigInteger ret = objectToBigInteger(object, null);
|
||
|
|
if (ret != null) {
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
throw wrongValueFormatException(key, "BigInteger", object, null);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the BigDecimal value associated with a key. If the value is float or
|
||
|
|
* double, the {@link BigDecimal#BigDecimal(double)} constructor will
|
||
|
|
* be used. See notes on the constructor for conversion issues that may
|
||
|
|
* arise.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @return The numeric value.
|
||
|
|
* @throws JSONException
|
||
|
|
* if the key is not found or if the value
|
||
|
|
* cannot be converted to BigDecimal.
|
||
|
|
*/
|
||
|
|
public BigDecimal getBigDecimal(String key) throws JSONException {
|
||
|
|
Object object = this.get(key);
|
||
|
|
BigDecimal ret = objectToBigDecimal(object, null);
|
||
|
|
if (ret != null) {
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
throw wrongValueFormatException(key, "BigDecimal", object, null);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the double value associated with a key.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @return The numeric value.
|
||
|
|
* @throws JSONException
|
||
|
|
* if the key is not found or if the value is not a Number
|
||
|
|
* object and cannot be converted to a number.
|
||
|
|
*/
|
||
|
|
public double getDouble(String key) throws JSONException {
|
||
|
|
final Object object = this.get(key);
|
||
|
|
if(object instanceof Number) {
|
||
|
|
return ((Number)object).doubleValue();
|
||
|
|
}
|
||
|
|
try {
|
||
|
|
return Double.parseDouble(object.toString());
|
||
|
|
} catch (Exception e) {
|
||
|
|
throw wrongValueFormatException(key, "double", object, e);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the float value associated with a key.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @return The numeric value.
|
||
|
|
* @throws JSONException
|
||
|
|
* if the key is not found or if the value is not a Number
|
||
|
|
* object and cannot be converted to a number.
|
||
|
|
*/
|
||
|
|
public float getFloat(String key) throws JSONException {
|
||
|
|
final Object object = this.get(key);
|
||
|
|
if(object instanceof Number) {
|
||
|
|
return ((Number)object).floatValue();
|
||
|
|
}
|
||
|
|
try {
|
||
|
|
return Float.parseFloat(object.toString());
|
||
|
|
} catch (Exception e) {
|
||
|
|
throw wrongValueFormatException(key, "float", object, e);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the Number value associated with a key.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @return The numeric value.
|
||
|
|
* @throws JSONException
|
||
|
|
* if the key is not found or if the value is not a Number
|
||
|
|
* object and cannot be converted to a number.
|
||
|
|
*/
|
||
|
|
public Number getNumber(String key) throws JSONException {
|
||
|
|
Object object = this.get(key);
|
||
|
|
try {
|
||
|
|
if (object instanceof Number) {
|
||
|
|
return (Number)object;
|
||
|
|
}
|
||
|
|
return stringToNumber(object.toString());
|
||
|
|
} catch (Exception e) {
|
||
|
|
throw wrongValueFormatException(key, "number", object, e);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the int value associated with a key.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @return The integer value.
|
||
|
|
* @throws JSONException
|
||
|
|
* if the key is not found or if the value cannot be converted
|
||
|
|
* to an integer.
|
||
|
|
*/
|
||
|
|
public int getInt(String key) throws JSONException {
|
||
|
|
final Object object = this.get(key);
|
||
|
|
if(object instanceof Number) {
|
||
|
|
return ((Number)object).intValue();
|
||
|
|
}
|
||
|
|
try {
|
||
|
|
return Integer.parseInt(object.toString());
|
||
|
|
} catch (Exception e) {
|
||
|
|
throw wrongValueFormatException(key, "int", object, e);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the JSONArray value associated with a key.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @return A JSONArray which is the value.
|
||
|
|
* @throws JSONException
|
||
|
|
* if the key is not found or if the value is not a JSONArray.
|
||
|
|
*/
|
||
|
|
public JSONArray getJSONArray(String key) throws JSONException {
|
||
|
|
Object object = this.get(key);
|
||
|
|
if (object instanceof JSONArray) {
|
||
|
|
return (JSONArray) object;
|
||
|
|
}
|
||
|
|
throw wrongValueFormatException(key, "JSONArray", object, null);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the JSONObject value associated with a key.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @return A JSONObject which is the value.
|
||
|
|
* @throws JSONException
|
||
|
|
* if the key is not found or if the value is not a JSONObject.
|
||
|
|
*/
|
||
|
|
public JSONObject getJSONObject(String key) throws JSONException {
|
||
|
|
Object object = this.get(key);
|
||
|
|
if (object instanceof JSONObject) {
|
||
|
|
return (JSONObject) object;
|
||
|
|
}
|
||
|
|
throw wrongValueFormatException(key, "JSONObject", object, null);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the long value associated with a key.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @return The long value.
|
||
|
|
* @throws JSONException
|
||
|
|
* if the key is not found or if the value cannot be converted
|
||
|
|
* to a long.
|
||
|
|
*/
|
||
|
|
public long getLong(String key) throws JSONException {
|
||
|
|
final Object object = this.get(key);
|
||
|
|
if(object instanceof Number) {
|
||
|
|
return ((Number)object).longValue();
|
||
|
|
}
|
||
|
|
try {
|
||
|
|
return Long.parseLong(object.toString());
|
||
|
|
} catch (Exception e) {
|
||
|
|
throw wrongValueFormatException(key, "long", object, e);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get an array of field names from a JSONObject.
|
||
|
|
*
|
||
|
|
* @param jo
|
||
|
|
* JSON object
|
||
|
|
* @return An array of field names, or null if there are no names.
|
||
|
|
*/
|
||
|
|
public static String[] getNames(JSONObject jo) {
|
||
|
|
if (jo.isEmpty()) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
return jo.keySet().toArray(new String[jo.length()]);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get an array of public field names from an Object.
|
||
|
|
*
|
||
|
|
* @param object
|
||
|
|
* object to read
|
||
|
|
* @return An array of field names, or null if there are no names.
|
||
|
|
*/
|
||
|
|
public static String[] getNames(Object object) {
|
||
|
|
if (object == null) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
Class<?> klass = object.getClass();
|
||
|
|
Field[] fields = klass.getFields();
|
||
|
|
int length = fields.length;
|
||
|
|
if (length == 0) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
String[] names = new String[length];
|
||
|
|
for (int i = 0; i < length; i += 1) {
|
||
|
|
names[i] = fields[i].getName();
|
||
|
|
}
|
||
|
|
return names;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the string associated with a key.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @return A string which is the value.
|
||
|
|
* @throws JSONException
|
||
|
|
* if there is no string value for the key.
|
||
|
|
*/
|
||
|
|
public String getString(String key) throws JSONException {
|
||
|
|
Object object = this.get(key);
|
||
|
|
if (object instanceof String) {
|
||
|
|
return (String) object;
|
||
|
|
}
|
||
|
|
throw wrongValueFormatException(key, "string", object, null);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Determine if the JSONObject contains a specific key.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @return true if the key exists in the JSONObject.
|
||
|
|
*/
|
||
|
|
public boolean has(String key) {
|
||
|
|
return this.map.containsKey(key);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Increment a property of a JSONObject. If there is no such property,
|
||
|
|
* create one with a value of 1 (Integer). If there is such a property, and if it is
|
||
|
|
* an Integer, Long, Double, Float, BigInteger, or BigDecimal then add one to it.
|
||
|
|
* No overflow bounds checking is performed, so callers should initialize the key
|
||
|
|
* prior to this call with an appropriate type that can handle the maximum expected
|
||
|
|
* value.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @return this.
|
||
|
|
* @throws JSONException
|
||
|
|
* If there is already a property with this name that is not an
|
||
|
|
* Integer, Long, Double, or Float.
|
||
|
|
*/
|
||
|
|
public JSONObject increment(String key) throws JSONException {
|
||
|
|
Object value = this.opt(key);
|
||
|
|
if (value == null) {
|
||
|
|
this.put(key, 1);
|
||
|
|
} else if (value instanceof Integer) {
|
||
|
|
this.put(key, ((Integer) value).intValue() + 1);
|
||
|
|
} else if (value instanceof Long) {
|
||
|
|
this.put(key, ((Long) value).longValue() + 1L);
|
||
|
|
} else if (value instanceof BigInteger) {
|
||
|
|
this.put(key, ((BigInteger)value).add(BigInteger.ONE));
|
||
|
|
} else if (value instanceof Float) {
|
||
|
|
this.put(key, ((Float) value).floatValue() + 1.0f);
|
||
|
|
} else if (value instanceof Double) {
|
||
|
|
this.put(key, ((Double) value).doubleValue() + 1.0d);
|
||
|
|
} else if (value instanceof BigDecimal) {
|
||
|
|
this.put(key, ((BigDecimal)value).add(BigDecimal.ONE));
|
||
|
|
} else {
|
||
|
|
throw new JSONException("Unable to increment [" + quote(key) + "].");
|
||
|
|
}
|
||
|
|
return this;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Determine if the value associated with the key is <code>null</code> or if there is no
|
||
|
|
* value.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @return true if there is no value associated with the key or if the value
|
||
|
|
* is the JSONObject.NULL object.
|
||
|
|
*/
|
||
|
|
public boolean isNull(String key) {
|
||
|
|
return JSONObject.NULL.equals(this.opt(key));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get an enumeration of the keys of the JSONObject. Modifying this key Set will also
|
||
|
|
* modify the JSONObject. Use with caution.
|
||
|
|
*
|
||
|
|
* @see Set#iterator()
|
||
|
|
*
|
||
|
|
* @return An iterator of the keys.
|
||
|
|
*/
|
||
|
|
public Iterator<String> keys() {
|
||
|
|
return this.keySet().iterator();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get a set of keys of the JSONObject. Modifying this key Set will also modify the
|
||
|
|
* JSONObject. Use with caution.
|
||
|
|
*
|
||
|
|
* @see Map#keySet()
|
||
|
|
*
|
||
|
|
* @return A keySet.
|
||
|
|
*/
|
||
|
|
public Set<String> keySet() {
|
||
|
|
return this.map.keySet();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get a set of entries of the JSONObject. These are raw values and may not
|
||
|
|
* match what is returned by the JSONObject get* and opt* functions. Modifying
|
||
|
|
* the returned EntrySet or the Entry objects contained therein will modify the
|
||
|
|
* backing JSONObject. This does not return a clone or a read-only view.
|
||
|
|
*
|
||
|
|
* Use with caution.
|
||
|
|
*
|
||
|
|
* @see Map#entrySet()
|
||
|
|
*
|
||
|
|
* @return An Entry Set
|
||
|
|
*/
|
||
|
|
protected Set<Entry<String, Object>> entrySet() {
|
||
|
|
return this.map.entrySet();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the number of keys stored in the JSONObject.
|
||
|
|
*
|
||
|
|
* @return The number of keys in the JSONObject.
|
||
|
|
*/
|
||
|
|
public int length() {
|
||
|
|
return this.map.size();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Removes all of the elements from this JSONObject.
|
||
|
|
* The JSONObject will be empty after this call returns.
|
||
|
|
*/
|
||
|
|
public void clear() {
|
||
|
|
this.map.clear();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check if JSONObject is empty.
|
||
|
|
*
|
||
|
|
* @return true if JSONObject is empty, otherwise false.
|
||
|
|
*/
|
||
|
|
public boolean isEmpty() {
|
||
|
|
return this.map.isEmpty();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Produce a JSONArray containing the names of the elements of this
|
||
|
|
* JSONObject.
|
||
|
|
*
|
||
|
|
* @return A JSONArray containing the key strings, or null if the JSONObject
|
||
|
|
* is empty.
|
||
|
|
*/
|
||
|
|
public JSONArray names() {
|
||
|
|
if(this.map.isEmpty()) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
return new JSONArray(this.map.keySet());
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Produce a string from a Number.
|
||
|
|
*
|
||
|
|
* @param number
|
||
|
|
* A Number
|
||
|
|
* @return A String.
|
||
|
|
* @throws JSONException
|
||
|
|
* If n is a non-finite number.
|
||
|
|
*/
|
||
|
|
public static String numberToString(Number number) throws JSONException {
|
||
|
|
if (number == null) {
|
||
|
|
throw new JSONException("Null pointer");
|
||
|
|
}
|
||
|
|
testValidity(number);
|
||
|
|
|
||
|
|
// Shave off trailing zeros and decimal point, if possible.
|
||
|
|
|
||
|
|
String string = number.toString();
|
||
|
|
if (string.indexOf('.') > 0 && string.indexOf('e') < 0
|
||
|
|
&& string.indexOf('E') < 0) {
|
||
|
|
while (string.endsWith("0")) {
|
||
|
|
string = string.substring(0, string.length() - 1);
|
||
|
|
}
|
||
|
|
if (string.endsWith(".")) {
|
||
|
|
string = string.substring(0, string.length() - 1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return string;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get an optional value associated with a key.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @return An object which is the value, or null if there is no value.
|
||
|
|
*/
|
||
|
|
public Object opt(String key) {
|
||
|
|
return key == null ? null : this.map.get(key);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the enum value associated with a key.
|
||
|
|
*
|
||
|
|
* @param <E>
|
||
|
|
* Enum Type
|
||
|
|
* @param clazz
|
||
|
|
* The type of enum to retrieve.
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @return The enum value associated with the key or null if not found
|
||
|
|
*/
|
||
|
|
public <E extends Enum<E>> E optEnum(Class<E> clazz, String key) {
|
||
|
|
return this.optEnum(clazz, key, null);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the enum value associated with a key.
|
||
|
|
*
|
||
|
|
* @param <E>
|
||
|
|
* Enum Type
|
||
|
|
* @param clazz
|
||
|
|
* The type of enum to retrieve.
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @param defaultValue
|
||
|
|
* The default in case the value is not found
|
||
|
|
* @return The enum value associated with the key or defaultValue
|
||
|
|
* if the value is not found or cannot be assigned to <code>clazz</code>
|
||
|
|
*/
|
||
|
|
public <E extends Enum<E>> E optEnum(Class<E> clazz, String key, E defaultValue) {
|
||
|
|
try {
|
||
|
|
Object val = this.opt(key);
|
||
|
|
if (NULL.equals(val)) {
|
||
|
|
return defaultValue;
|
||
|
|
}
|
||
|
|
if (clazz.isAssignableFrom(val.getClass())) {
|
||
|
|
// we just checked it!
|
||
|
|
@SuppressWarnings("unchecked")
|
||
|
|
E myE = (E) val;
|
||
|
|
return myE;
|
||
|
|
}
|
||
|
|
return Enum.valueOf(clazz, val.toString());
|
||
|
|
} catch (IllegalArgumentException e) {
|
||
|
|
return defaultValue;
|
||
|
|
} catch (NullPointerException e) {
|
||
|
|
return defaultValue;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get an optional boolean associated with a key. It returns false if there
|
||
|
|
* is no such key, or if the value is not Boolean.TRUE or the String "true".
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @return The truth.
|
||
|
|
*/
|
||
|
|
public boolean optBoolean(String key) {
|
||
|
|
return this.optBoolean(key, false);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get an optional boolean associated with a key. It returns the
|
||
|
|
* defaultValue if there is no such key, or if it is not a Boolean or the
|
||
|
|
* String "true" or "false" (case insensitive).
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @param defaultValue
|
||
|
|
* The default.
|
||
|
|
* @return The truth.
|
||
|
|
*/
|
||
|
|
public boolean optBoolean(String key, boolean defaultValue) {
|
||
|
|
Object val = this.opt(key);
|
||
|
|
if (NULL.equals(val)) {
|
||
|
|
return defaultValue;
|
||
|
|
}
|
||
|
|
if (val instanceof Boolean){
|
||
|
|
return ((Boolean) val).booleanValue();
|
||
|
|
}
|
||
|
|
try {
|
||
|
|
// we'll use the get anyway because it does string conversion.
|
||
|
|
return this.getBoolean(key);
|
||
|
|
} catch (Exception e) {
|
||
|
|
return defaultValue;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get an optional BigDecimal associated with a key, or the defaultValue if
|
||
|
|
* there is no such key or if its value is not a number. If the value is a
|
||
|
|
* string, an attempt will be made to evaluate it as a number. If the value
|
||
|
|
* is float or double, then the {@link BigDecimal#BigDecimal(double)}
|
||
|
|
* constructor will be used. See notes on the constructor for conversion
|
||
|
|
* issues that may arise.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @param defaultValue
|
||
|
|
* The default.
|
||
|
|
* @return An object which is the value.
|
||
|
|
*/
|
||
|
|
public BigDecimal optBigDecimal(String key, BigDecimal defaultValue) {
|
||
|
|
Object val = this.opt(key);
|
||
|
|
return objectToBigDecimal(val, defaultValue);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param val value to convert
|
||
|
|
* @param defaultValue default value to return is the conversion doesn't work or is null.
|
||
|
|
* @return BigDecimal conversion of the original value, or the defaultValue if unable
|
||
|
|
* to convert.
|
||
|
|
*/
|
||
|
|
static BigDecimal objectToBigDecimal(Object val, BigDecimal defaultValue) {
|
||
|
|
return objectToBigDecimal(val, defaultValue, true);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param val value to convert
|
||
|
|
* @param defaultValue default value to return is the conversion doesn't work or is null.
|
||
|
|
* @param exact When <code>true</code>, then {@link Double} and {@link Float} values will be converted exactly.
|
||
|
|
* When <code>false</code>, they will be converted to {@link String} values before converting to {@link BigDecimal}.
|
||
|
|
* @return BigDecimal conversion of the original value, or the defaultValue if unable
|
||
|
|
* to convert.
|
||
|
|
*/
|
||
|
|
static BigDecimal objectToBigDecimal(Object val, BigDecimal defaultValue, boolean exact) {
|
||
|
|
if (NULL.equals(val)) {
|
||
|
|
return defaultValue;
|
||
|
|
}
|
||
|
|
if (val instanceof BigDecimal){
|
||
|
|
return (BigDecimal) val;
|
||
|
|
}
|
||
|
|
if (val instanceof BigInteger){
|
||
|
|
return new BigDecimal((BigInteger) val);
|
||
|
|
}
|
||
|
|
if (val instanceof Double || val instanceof Float){
|
||
|
|
if (!numberIsFinite((Number)val)) {
|
||
|
|
return defaultValue;
|
||
|
|
}
|
||
|
|
if (exact) {
|
||
|
|
return new BigDecimal(((Number)val).doubleValue());
|
||
|
|
}
|
||
|
|
// use the string constructor so that we maintain "nice" values for doubles and floats
|
||
|
|
// the double constructor will translate doubles to "exact" values instead of the likely
|
||
|
|
// intended representation
|
||
|
|
return new BigDecimal(val.toString());
|
||
|
|
}
|
||
|
|
if (val instanceof Long || val instanceof Integer
|
||
|
|
|| val instanceof Short || val instanceof Byte){
|
||
|
|
return new BigDecimal(((Number) val).longValue());
|
||
|
|
}
|
||
|
|
// don't check if it's a string in case of unchecked Number subclasses
|
||
|
|
try {
|
||
|
|
return new BigDecimal(val.toString());
|
||
|
|
} catch (Exception e) {
|
||
|
|
return defaultValue;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get an optional BigInteger associated with a key, or the defaultValue if
|
||
|
|
* there is no such key or if its value is not a number. If the value is a
|
||
|
|
* string, an attempt will be made to evaluate it as a number.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @param defaultValue
|
||
|
|
* The default.
|
||
|
|
* @return An object which is the value.
|
||
|
|
*/
|
||
|
|
public BigInteger optBigInteger(String key, BigInteger defaultValue) {
|
||
|
|
Object val = this.opt(key);
|
||
|
|
return objectToBigInteger(val, defaultValue);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param val value to convert
|
||
|
|
* @param defaultValue default value to return is the conversion doesn't work or is null.
|
||
|
|
* @return BigInteger conversion of the original value, or the defaultValue if unable
|
||
|
|
* to convert.
|
||
|
|
*/
|
||
|
|
static BigInteger objectToBigInteger(Object val, BigInteger defaultValue) {
|
||
|
|
if (NULL.equals(val)) {
|
||
|
|
return defaultValue;
|
||
|
|
}
|
||
|
|
if (val instanceof BigInteger){
|
||
|
|
return (BigInteger) val;
|
||
|
|
}
|
||
|
|
if (val instanceof BigDecimal){
|
||
|
|
return ((BigDecimal) val).toBigInteger();
|
||
|
|
}
|
||
|
|
if (val instanceof Double || val instanceof Float){
|
||
|
|
if (!numberIsFinite((Number)val)) {
|
||
|
|
return defaultValue;
|
||
|
|
}
|
||
|
|
return new BigDecimal(((Number) val).doubleValue()).toBigInteger();
|
||
|
|
}
|
||
|
|
if (val instanceof Long || val instanceof Integer
|
||
|
|
|| val instanceof Short || val instanceof Byte){
|
||
|
|
return BigInteger.valueOf(((Number) val).longValue());
|
||
|
|
}
|
||
|
|
// don't check if it's a string in case of unchecked Number subclasses
|
||
|
|
try {
|
||
|
|
// the other opt functions handle implicit conversions, i.e.
|
||
|
|
// jo.put("double",1.1d);
|
||
|
|
// jo.optInt("double"); -- will return 1, not an error
|
||
|
|
// this conversion to BigDecimal then to BigInteger is to maintain
|
||
|
|
// that type cast support that may truncate the decimal.
|
||
|
|
final String valStr = val.toString();
|
||
|
|
if(isDecimalNotation(valStr)) {
|
||
|
|
return new BigDecimal(valStr).toBigInteger();
|
||
|
|
}
|
||
|
|
return new BigInteger(valStr);
|
||
|
|
} catch (Exception e) {
|
||
|
|
return defaultValue;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get an optional double associated with a key, or NaN if there is no such
|
||
|
|
* key or if its value is not a number. If the value is a string, an attempt
|
||
|
|
* will be made to evaluate it as a number.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A string which is the key.
|
||
|
|
* @return An object which is the value.
|
||
|
|
*/
|
||
|
|
public double optDouble(String key) {
|
||
|
|
return this.optDouble(key, Double.NaN);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get an optional double associated with a key, or the defaultValue if
|
||
|
|
* there is no such key or if its value is not a number. If the value is a
|
||
|
|
* string, an attempt will be made to evaluate it as a number.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @param defaultValue
|
||
|
|
* The default.
|
||
|
|
* @return An object which is the value.
|
||
|
|
*/
|
||
|
|
public double optDouble(String key, double defaultValue) {
|
||
|
|
Number val = this.optNumber(key);
|
||
|
|
if (val == null) {
|
||
|
|
return defaultValue;
|
||
|
|
}
|
||
|
|
final double doubleValue = val.doubleValue();
|
||
|
|
// if (Double.isNaN(doubleValue) || Double.isInfinite(doubleValue)) {
|
||
|
|
// return defaultValue;
|
||
|
|
// }
|
||
|
|
return doubleValue;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the optional double value associated with an index. NaN is returned
|
||
|
|
* if there is no value for the index, or if the value is not a number and
|
||
|
|
* cannot be converted to a number.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @return The value.
|
||
|
|
*/
|
||
|
|
public float optFloat(String key) {
|
||
|
|
return this.optFloat(key, Float.NaN);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the optional double value associated with an index. The defaultValue
|
||
|
|
* is returned if there is no value for the index, or if the value is not a
|
||
|
|
* number and cannot be converted to a number.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @param defaultValue
|
||
|
|
* The default value.
|
||
|
|
* @return The value.
|
||
|
|
*/
|
||
|
|
public float optFloat(String key, float defaultValue) {
|
||
|
|
Number val = this.optNumber(key);
|
||
|
|
if (val == null) {
|
||
|
|
return defaultValue;
|
||
|
|
}
|
||
|
|
final float floatValue = val.floatValue();
|
||
|
|
// if (Float.isNaN(floatValue) || Float.isInfinite(floatValue)) {
|
||
|
|
// return defaultValue;
|
||
|
|
// }
|
||
|
|
return floatValue;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get an optional int value associated with a key, or zero if there is no
|
||
|
|
* such key or if the value is not a number. If the value is a string, an
|
||
|
|
* attempt will be made to evaluate it as a number.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @return An object which is the value.
|
||
|
|
*/
|
||
|
|
public int optInt(String key) {
|
||
|
|
return this.optInt(key, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get an optional int value associated with a key, or the default if there
|
||
|
|
* is no such key or if the value is not a number. If the value is a string,
|
||
|
|
* an attempt will be made to evaluate it as a number.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @param defaultValue
|
||
|
|
* The default.
|
||
|
|
* @return An object which is the value.
|
||
|
|
*/
|
||
|
|
public int optInt(String key, int defaultValue) {
|
||
|
|
final Number val = this.optNumber(key, null);
|
||
|
|
if (val == null) {
|
||
|
|
return defaultValue;
|
||
|
|
}
|
||
|
|
return val.intValue();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get an optional JSONArray associated with a key. It returns null if there
|
||
|
|
* is no such key, or if its value is not a JSONArray.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @return A JSONArray which is the value.
|
||
|
|
*/
|
||
|
|
public JSONArray optJSONArray(String key) {
|
||
|
|
Object o = this.opt(key);
|
||
|
|
return o instanceof JSONArray ? (JSONArray) o : null;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get an optional JSONObject associated with a key. It returns null if
|
||
|
|
* there is no such key, or if its value is not a JSONObject.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @return A JSONObject which is the value.
|
||
|
|
*/
|
||
|
|
public JSONObject optJSONObject(String key) { return this.optJSONObject(key, null); }
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get an optional JSONObject associated with a key, or the default if there
|
||
|
|
* is no such key or if the value is not a JSONObject.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @param defaultValue
|
||
|
|
* The default.
|
||
|
|
* @return An JSONObject which is the value.
|
||
|
|
*/
|
||
|
|
public JSONObject optJSONObject(String key, JSONObject defaultValue) {
|
||
|
|
Object object = this.opt(key);
|
||
|
|
return object instanceof JSONObject ? (JSONObject) object : defaultValue;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get an optional long value associated with a key, or zero if there is no
|
||
|
|
* such key or if the value is not a number. If the value is a string, an
|
||
|
|
* attempt will be made to evaluate it as a number.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @return An object which is the value.
|
||
|
|
*/
|
||
|
|
public long optLong(String key) {
|
||
|
|
return this.optLong(key, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get an optional long value associated with a key, or the default if there
|
||
|
|
* is no such key or if the value is not a number. If the value is a string,
|
||
|
|
* an attempt will be made to evaluate it as a number.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @param defaultValue
|
||
|
|
* The default.
|
||
|
|
* @return An object which is the value.
|
||
|
|
*/
|
||
|
|
public long optLong(String key, long defaultValue) {
|
||
|
|
final Number val = this.optNumber(key, null);
|
||
|
|
if (val == null) {
|
||
|
|
return defaultValue;
|
||
|
|
}
|
||
|
|
|
||
|
|
return val.longValue();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get an optional {@link Number} value associated with a key, or <code>null</code>
|
||
|
|
* if there is no such key or if the value is not a number. If the value is a string,
|
||
|
|
* an attempt will be made to evaluate it as a number ({@link BigDecimal}). This method
|
||
|
|
* would be used in cases where type coercion of the number value is unwanted.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @return An object which is the value.
|
||
|
|
*/
|
||
|
|
public Number optNumber(String key) {
|
||
|
|
return this.optNumber(key, null);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get an optional {@link Number} value associated with a key, or the default if there
|
||
|
|
* is no such key or if the value is not a number. If the value is a string,
|
||
|
|
* an attempt will be made to evaluate it as a number. This method
|
||
|
|
* would be used in cases where type coercion of the number value is unwanted.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @param defaultValue
|
||
|
|
* The default.
|
||
|
|
* @return An object which is the value.
|
||
|
|
*/
|
||
|
|
public Number optNumber(String key, Number defaultValue) {
|
||
|
|
Object val = this.opt(key);
|
||
|
|
if (NULL.equals(val)) {
|
||
|
|
return defaultValue;
|
||
|
|
}
|
||
|
|
if (val instanceof Number){
|
||
|
|
return (Number) val;
|
||
|
|
}
|
||
|
|
|
||
|
|
try {
|
||
|
|
return stringToNumber(val.toString());
|
||
|
|
} catch (Exception e) {
|
||
|
|
return defaultValue;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get an optional string associated with a key. It returns an empty string
|
||
|
|
* if there is no such key. If the value is not a string and is not null,
|
||
|
|
* then it is converted to a string.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @return A string which is the value.
|
||
|
|
*/
|
||
|
|
public String optString(String key) {
|
||
|
|
return this.optString(key, "");
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get an optional string associated with a key. It returns the defaultValue
|
||
|
|
* if there is no such key.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @param defaultValue
|
||
|
|
* The default.
|
||
|
|
* @return A string which is the value.
|
||
|
|
*/
|
||
|
|
public String optString(String key, String defaultValue) {
|
||
|
|
Object object = this.opt(key);
|
||
|
|
return NULL.equals(object) ? defaultValue : object.toString();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Populates the internal map of the JSONObject with the bean properties. The
|
||
|
|
* bean can not be recursive.
|
||
|
|
*
|
||
|
|
* @see JSONObject#JSONObject(Object)
|
||
|
|
*
|
||
|
|
* @param bean
|
||
|
|
* the bean
|
||
|
|
*/
|
||
|
|
private void populateMap(Object bean) {
|
||
|
|
populateMap(bean, Collections.newSetFromMap(new IdentityHashMap<Object, Boolean>()));
|
||
|
|
}
|
||
|
|
|
||
|
|
private void populateMap(Object bean, Set<Object> objectsRecord) {
|
||
|
|
Class<?> klass = bean.getClass();
|
||
|
|
|
||
|
|
// If klass is a System class then set includeSuperClass to false.
|
||
|
|
|
||
|
|
boolean includeSuperClass = klass.getClassLoader() != null;
|
||
|
|
|
||
|
|
Method[] methods = includeSuperClass ? klass.getMethods() : klass.getDeclaredMethods();
|
||
|
|
for (final Method method : methods) {
|
||
|
|
final int modifiers = method.getModifiers();
|
||
|
|
if (Modifier.isPublic(modifiers)
|
||
|
|
&& !Modifier.isStatic(modifiers)
|
||
|
|
&& method.getParameterTypes().length == 0
|
||
|
|
&& !method.isBridge()
|
||
|
|
&& method.getReturnType() != Void.TYPE
|
||
|
|
&& isValidMethodName(method.getName())) {
|
||
|
|
final String key = getKeyNameFromMethod(method);
|
||
|
|
if (key != null && !key.isEmpty()) {
|
||
|
|
try {
|
||
|
|
final Object result = method.invoke(bean);
|
||
|
|
if (result != null) {
|
||
|
|
// check cyclic dependency and throw error if needed
|
||
|
|
// the wrap and populateMap combination method is
|
||
|
|
// itself DFS recursive
|
||
|
|
if (objectsRecord.contains(result)) {
|
||
|
|
throw recursivelyDefinedObjectException(key);
|
||
|
|
}
|
||
|
|
|
||
|
|
objectsRecord.add(result);
|
||
|
|
|
||
|
|
this.map.put(key, wrap(result, objectsRecord));
|
||
|
|
|
||
|
|
objectsRecord.remove(result);
|
||
|
|
|
||
|
|
// we don't use the result anywhere outside of wrap
|
||
|
|
// if it's a resource we should be sure to close it
|
||
|
|
// after calling toString
|
||
|
|
if (result instanceof Closeable) {
|
||
|
|
try {
|
||
|
|
((Closeable) result).close();
|
||
|
|
} catch (IOException ignore) {
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} catch (IllegalAccessException ignore) {
|
||
|
|
} catch (IllegalArgumentException ignore) {
|
||
|
|
} catch (InvocationTargetException ignore) {
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private static boolean isValidMethodName(String name) {
|
||
|
|
return !"getClass".equals(name) && !"getDeclaringClass".equals(name);
|
||
|
|
}
|
||
|
|
|
||
|
|
private static String getKeyNameFromMethod(Method method) {
|
||
|
|
final int ignoreDepth = getAnnotationDepth(method, JSONPropertyIgnore.class);
|
||
|
|
if (ignoreDepth > 0) {
|
||
|
|
final int forcedNameDepth = getAnnotationDepth(method, JSONPropertyName.class);
|
||
|
|
if (forcedNameDepth < 0 || ignoreDepth <= forcedNameDepth) {
|
||
|
|
// the hierarchy asked to ignore, and the nearest name override
|
||
|
|
// was higher or non-existent
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
JSONPropertyName annotation = getAnnotation(method, JSONPropertyName.class);
|
||
|
|
if (annotation != null && annotation.value() != null && !annotation.value().isEmpty()) {
|
||
|
|
return annotation.value();
|
||
|
|
}
|
||
|
|
String key;
|
||
|
|
final String name = method.getName();
|
||
|
|
if (name.startsWith("get") && name.length() > 3) {
|
||
|
|
key = name.substring(3);
|
||
|
|
} else if (name.startsWith("is") && name.length() > 2) {
|
||
|
|
key = name.substring(2);
|
||
|
|
} else {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
// if the first letter in the key is not uppercase, then skip.
|
||
|
|
// This is to maintain backwards compatibility before PR406
|
||
|
|
// (https://github.com/stleary/JSON-java/pull/406/)
|
||
|
|
if (key.length() == 0 || Character.isLowerCase(key.charAt(0))) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
if (key.length() == 1) {
|
||
|
|
key = key.toLowerCase(Locale.ROOT);
|
||
|
|
} else if (!Character.isUpperCase(key.charAt(1))) {
|
||
|
|
key = key.substring(0, 1).toLowerCase(Locale.ROOT) + key.substring(1);
|
||
|
|
}
|
||
|
|
return key;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Searches the class hierarchy to see if the method or it's super
|
||
|
|
* implementations and interfaces has the annotation.
|
||
|
|
*
|
||
|
|
* @param <A>
|
||
|
|
* type of the annotation
|
||
|
|
*
|
||
|
|
* @param m
|
||
|
|
* method to check
|
||
|
|
* @param annotationClass
|
||
|
|
* annotation to look for
|
||
|
|
* @return the {@link Annotation} if the annotation exists on the current method
|
||
|
|
* or one of its super class definitions
|
||
|
|
*/
|
||
|
|
private static <A extends Annotation> A getAnnotation(final Method m, final Class<A> annotationClass) {
|
||
|
|
// if we have invalid data the result is null
|
||
|
|
if (m == null || annotationClass == null) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (m.isAnnotationPresent(annotationClass)) {
|
||
|
|
return m.getAnnotation(annotationClass);
|
||
|
|
}
|
||
|
|
|
||
|
|
// if we've already reached the Object class, return null;
|
||
|
|
Class<?> c = m.getDeclaringClass();
|
||
|
|
if (c.getSuperclass() == null) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
// check directly implemented interfaces for the method being checked
|
||
|
|
for (Class<?> i : c.getInterfaces()) {
|
||
|
|
try {
|
||
|
|
Method im = i.getMethod(m.getName(), m.getParameterTypes());
|
||
|
|
return getAnnotation(im, annotationClass);
|
||
|
|
} catch (final SecurityException ex) {
|
||
|
|
continue;
|
||
|
|
} catch (final NoSuchMethodException ex) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
try {
|
||
|
|
return getAnnotation(
|
||
|
|
c.getSuperclass().getMethod(m.getName(), m.getParameterTypes()),
|
||
|
|
annotationClass);
|
||
|
|
} catch (final SecurityException ex) {
|
||
|
|
return null;
|
||
|
|
} catch (final NoSuchMethodException ex) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Searches the class hierarchy to see if the method or it's super
|
||
|
|
* implementations and interfaces has the annotation. Returns the depth of the
|
||
|
|
* annotation in the hierarchy.
|
||
|
|
*
|
||
|
|
* @param m
|
||
|
|
* method to check
|
||
|
|
* @param annotationClass
|
||
|
|
* annotation to look for
|
||
|
|
* @return Depth of the annotation or -1 if the annotation is not on the method.
|
||
|
|
*/
|
||
|
|
private static int getAnnotationDepth(final Method m, final Class<? extends Annotation> annotationClass) {
|
||
|
|
// if we have invalid data the result is -1
|
||
|
|
if (m == null || annotationClass == null) {
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (m.isAnnotationPresent(annotationClass)) {
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
// if we've already reached the Object class, return -1;
|
||
|
|
Class<?> c = m.getDeclaringClass();
|
||
|
|
if (c.getSuperclass() == null) {
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
// check directly implemented interfaces for the method being checked
|
||
|
|
for (Class<?> i : c.getInterfaces()) {
|
||
|
|
try {
|
||
|
|
Method im = i.getMethod(m.getName(), m.getParameterTypes());
|
||
|
|
int d = getAnnotationDepth(im, annotationClass);
|
||
|
|
if (d > 0) {
|
||
|
|
// since the annotation was on the interface, add 1
|
||
|
|
return d + 1;
|
||
|
|
}
|
||
|
|
} catch (final SecurityException ex) {
|
||
|
|
continue;
|
||
|
|
} catch (final NoSuchMethodException ex) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
try {
|
||
|
|
int d = getAnnotationDepth(
|
||
|
|
c.getSuperclass().getMethod(m.getName(), m.getParameterTypes()),
|
||
|
|
annotationClass);
|
||
|
|
if (d > 0) {
|
||
|
|
// since the annotation was on the superclass, add 1
|
||
|
|
return d + 1;
|
||
|
|
}
|
||
|
|
return -1;
|
||
|
|
} catch (final SecurityException ex) {
|
||
|
|
return -1;
|
||
|
|
} catch (final NoSuchMethodException ex) {
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Put a key/boolean pair in the JSONObject.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @param value
|
||
|
|
* A boolean which is the value.
|
||
|
|
* @return this.
|
||
|
|
* @throws JSONException
|
||
|
|
* If the value is non-finite number.
|
||
|
|
* @throws NullPointerException
|
||
|
|
* If the key is <code>null</code>.
|
||
|
|
*/
|
||
|
|
public JSONObject put(String key, boolean value) throws JSONException {
|
||
|
|
return this.put(key, value ? Boolean.TRUE : Boolean.FALSE);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Put a key/value pair in the JSONObject, where the value will be a
|
||
|
|
* JSONArray which is produced from a Collection.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @param value
|
||
|
|
* A Collection value.
|
||
|
|
* @return this.
|
||
|
|
* @throws JSONException
|
||
|
|
* If the value is non-finite number.
|
||
|
|
* @throws NullPointerException
|
||
|
|
* If the key is <code>null</code>.
|
||
|
|
*/
|
||
|
|
public JSONObject put(String key, Collection<?> value) throws JSONException {
|
||
|
|
return this.put(key, new JSONArray(value));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Put a key/double pair in the JSONObject.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @param value
|
||
|
|
* A double which is the value.
|
||
|
|
* @return this.
|
||
|
|
* @throws JSONException
|
||
|
|
* If the value is non-finite number.
|
||
|
|
* @throws NullPointerException
|
||
|
|
* If the key is <code>null</code>.
|
||
|
|
*/
|
||
|
|
public JSONObject put(String key, double value) throws JSONException {
|
||
|
|
return this.put(key, Double.valueOf(value));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Put a key/float pair in the JSONObject.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @param value
|
||
|
|
* A float which is the value.
|
||
|
|
* @return this.
|
||
|
|
* @throws JSONException
|
||
|
|
* If the value is non-finite number.
|
||
|
|
* @throws NullPointerException
|
||
|
|
* If the key is <code>null</code>.
|
||
|
|
*/
|
||
|
|
public JSONObject put(String key, float value) throws JSONException {
|
||
|
|
return this.put(key, Float.valueOf(value));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Put a key/int pair in the JSONObject.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @param value
|
||
|
|
* An int which is the value.
|
||
|
|
* @return this.
|
||
|
|
* @throws JSONException
|
||
|
|
* If the value is non-finite number.
|
||
|
|
* @throws NullPointerException
|
||
|
|
* If the key is <code>null</code>.
|
||
|
|
*/
|
||
|
|
public JSONObject put(String key, int value) throws JSONException {
|
||
|
|
return this.put(key, Integer.valueOf(value));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Put a key/long pair in the JSONObject.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @param value
|
||
|
|
* A long which is the value.
|
||
|
|
* @return this.
|
||
|
|
* @throws JSONException
|
||
|
|
* If the value is non-finite number.
|
||
|
|
* @throws NullPointerException
|
||
|
|
* If the key is <code>null</code>.
|
||
|
|
*/
|
||
|
|
public JSONObject put(String key, long value) throws JSONException {
|
||
|
|
return this.put(key, Long.valueOf(value));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Put a key/value pair in the JSONObject, where the value will be a
|
||
|
|
* JSONObject which is produced from a Map.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @param value
|
||
|
|
* A Map value.
|
||
|
|
* @return this.
|
||
|
|
* @throws JSONException
|
||
|
|
* If the value is non-finite number.
|
||
|
|
* @throws NullPointerException
|
||
|
|
* If the key is <code>null</code>.
|
||
|
|
*/
|
||
|
|
public JSONObject put(String key, Map<?, ?> value) throws JSONException {
|
||
|
|
return this.put(key, new JSONObject(value));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Put a key/value pair in the JSONObject. If the value is <code>null</code>, then the
|
||
|
|
* key will be removed from the JSONObject if it is present.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @param value
|
||
|
|
* An object which is the value. It should be of one of these
|
||
|
|
* types: Boolean, Double, Integer, JSONArray, JSONObject, Long,
|
||
|
|
* String, or the JSONObject.NULL object.
|
||
|
|
* @return this.
|
||
|
|
* @throws JSONException
|
||
|
|
* If the value is non-finite number.
|
||
|
|
* @throws NullPointerException
|
||
|
|
* If the key is <code>null</code>.
|
||
|
|
*/
|
||
|
|
public JSONObject put(String key, Object value) throws JSONException {
|
||
|
|
if (key == null) {
|
||
|
|
throw new NullPointerException("Null key.");
|
||
|
|
}
|
||
|
|
if (value != null) {
|
||
|
|
testValidity(value);
|
||
|
|
this.map.put(key, value);
|
||
|
|
} else {
|
||
|
|
this.remove(key);
|
||
|
|
}
|
||
|
|
return this;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Put a key/value pair in the JSONObject, but only if the key and the value
|
||
|
|
* are both non-null, and only if there is not already a member with that
|
||
|
|
* name.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* key to insert into
|
||
|
|
* @param value
|
||
|
|
* value to insert
|
||
|
|
* @return this.
|
||
|
|
* @throws JSONException
|
||
|
|
* if the key is a duplicate
|
||
|
|
*/
|
||
|
|
public JSONObject putOnce(String key, Object value) throws JSONException {
|
||
|
|
if (key != null && value != null) {
|
||
|
|
if (this.opt(key) != null) {
|
||
|
|
throw new JSONException("Duplicate key \"" + key + "\"");
|
||
|
|
}
|
||
|
|
return this.put(key, value);
|
||
|
|
}
|
||
|
|
return this;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Put a key/value pair in the JSONObject, but only if the key and the value
|
||
|
|
* are both non-null.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* A key string.
|
||
|
|
* @param value
|
||
|
|
* An object which is the value. It should be of one of these
|
||
|
|
* types: Boolean, Double, Integer, JSONArray, JSONObject, Long,
|
||
|
|
* String, or the JSONObject.NULL object.
|
||
|
|
* @return this.
|
||
|
|
* @throws JSONException
|
||
|
|
* If the value is a non-finite number.
|
||
|
|
*/
|
||
|
|
public JSONObject putOpt(String key, Object value) throws JSONException {
|
||
|
|
if (key != null && value != null) {
|
||
|
|
return this.put(key, value);
|
||
|
|
}
|
||
|
|
return this;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates a JSONPointer using an initialization string and tries to
|
||
|
|
* match it to an item within this JSONObject. For example, given a
|
||
|
|
* JSONObject initialized with this document:
|
||
|
|
* <pre>
|
||
|
|
* {
|
||
|
|
* "a":{"b":"c"}
|
||
|
|
* }
|
||
|
|
* </pre>
|
||
|
|
* and this JSONPointer string:
|
||
|
|
* <pre>
|
||
|
|
* "/a/b"
|
||
|
|
* </pre>
|
||
|
|
* Then this method will return the String "c".
|
||
|
|
* A JSONPointerException may be thrown from code called by this method.
|
||
|
|
*
|
||
|
|
* @param jsonPointer string that can be used to create a JSONPointer
|
||
|
|
* @return the item matched by the JSONPointer, otherwise null
|
||
|
|
*/
|
||
|
|
public Object query(String jsonPointer) {
|
||
|
|
return query(new JSONPointer(jsonPointer));
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* Uses a user initialized JSONPointer and tries to
|
||
|
|
* match it to an item within this JSONObject. For example, given a
|
||
|
|
* JSONObject initialized with this document:
|
||
|
|
* <pre>
|
||
|
|
* {
|
||
|
|
* "a":{"b":"c"}
|
||
|
|
* }
|
||
|
|
* </pre>
|
||
|
|
* and this JSONPointer:
|
||
|
|
* <pre>
|
||
|
|
* "/a/b"
|
||
|
|
* </pre>
|
||
|
|
* Then this method will return the String "c".
|
||
|
|
* A JSONPointerException may be thrown from code called by this method.
|
||
|
|
*
|
||
|
|
* @param jsonPointer string that can be used to create a JSONPointer
|
||
|
|
* @return the item matched by the JSONPointer, otherwise null
|
||
|
|
*/
|
||
|
|
public Object query(JSONPointer jsonPointer) {
|
||
|
|
return jsonPointer.queryFrom(this);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Queries and returns a value from this object using {@code jsonPointer}, or
|
||
|
|
* returns null if the query fails due to a missing key.
|
||
|
|
*
|
||
|
|
* @param jsonPointer the string representation of the JSON pointer
|
||
|
|
* @return the queried value or {@code null}
|
||
|
|
* @throws IllegalArgumentException if {@code jsonPointer} has invalid syntax
|
||
|
|
*/
|
||
|
|
public Object optQuery(String jsonPointer) {
|
||
|
|
return optQuery(new JSONPointer(jsonPointer));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Queries and returns a value from this object using {@code jsonPointer}, or
|
||
|
|
* returns null if the query fails due to a missing key.
|
||
|
|
*
|
||
|
|
* @param jsonPointer The JSON pointer
|
||
|
|
* @return the queried value or {@code null}
|
||
|
|
* @throws IllegalArgumentException if {@code jsonPointer} has invalid syntax
|
||
|
|
*/
|
||
|
|
public Object optQuery(JSONPointer jsonPointer) {
|
||
|
|
try {
|
||
|
|
return jsonPointer.queryFrom(this);
|
||
|
|
} catch (JSONPointerException e) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Produce a string in double quotes with backslash sequences in all the
|
||
|
|
* right places. A backslash will be inserted within </, producing
|
||
|
|
* <\/, allowing JSON text to be delivered in HTML. In JSON text, a
|
||
|
|
* string cannot contain a control character or an unescaped quote or
|
||
|
|
* backslash.
|
||
|
|
*
|
||
|
|
* @param string
|
||
|
|
* A String
|
||
|
|
* @return A String correctly formatted for insertion in a JSON text.
|
||
|
|
*/
|
||
|
|
@SuppressWarnings("resource")
|
||
|
|
public static String quote(String string) {
|
||
|
|
StringWriter sw = new StringWriter();
|
||
|
|
synchronized (sw.getBuffer()) {
|
||
|
|
try {
|
||
|
|
return quote(string, sw).toString();
|
||
|
|
} catch (IOException ignored) {
|
||
|
|
// will never happen - we are writing to a string writer
|
||
|
|
return "";
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public static Writer quote(String string, Writer w) throws IOException {
|
||
|
|
if (string == null || string.isEmpty()) {
|
||
|
|
w.write("\"\"");
|
||
|
|
return w;
|
||
|
|
}
|
||
|
|
|
||
|
|
char b;
|
||
|
|
char c = 0;
|
||
|
|
String hhhh;
|
||
|
|
int i;
|
||
|
|
int len = string.length();
|
||
|
|
|
||
|
|
w.write('"');
|
||
|
|
for (i = 0; i < len; i += 1) {
|
||
|
|
b = c;
|
||
|
|
c = string.charAt(i);
|
||
|
|
switch (c) {
|
||
|
|
case '\\':
|
||
|
|
case '"':
|
||
|
|
w.write('\\');
|
||
|
|
w.write(c);
|
||
|
|
break;
|
||
|
|
case '/':
|
||
|
|
if (b == '<') {
|
||
|
|
w.write('\\');
|
||
|
|
}
|
||
|
|
w.write(c);
|
||
|
|
break;
|
||
|
|
case '\b':
|
||
|
|
w.write("\\b");
|
||
|
|
break;
|
||
|
|
case '\t':
|
||
|
|
w.write("\\t");
|
||
|
|
break;
|
||
|
|
case '\n':
|
||
|
|
w.write("\\n");
|
||
|
|
break;
|
||
|
|
case '\f':
|
||
|
|
w.write("\\f");
|
||
|
|
break;
|
||
|
|
case '\r':
|
||
|
|
w.write("\\r");
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
if (c < ' ' || (c >= '\u0080' && c < '\u00a0')
|
||
|
|
|| (c >= '\u2000' && c < '\u2100')) {
|
||
|
|
w.write("\\u");
|
||
|
|
hhhh = Integer.toHexString(c);
|
||
|
|
w.write("0000", 0, 4 - hhhh.length());
|
||
|
|
w.write(hhhh);
|
||
|
|
} else {
|
||
|
|
w.write(c);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
w.write('"');
|
||
|
|
return w;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Remove a name and its value, if present.
|
||
|
|
*
|
||
|
|
* @param key
|
||
|
|
* The name to be removed.
|
||
|
|
* @return The value that was associated with the name, or null if there was
|
||
|
|
* no value.
|
||
|
|
*/
|
||
|
|
public Object remove(String key) {
|
||
|
|
return this.map.remove(key);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Determine if two JSONObjects are similar.
|
||
|
|
* They must contain the same set of names which must be associated with
|
||
|
|
* similar values.
|
||
|
|
*
|
||
|
|
* @param other The other JSONObject
|
||
|
|
* @return true if they are equal
|
||
|
|
*/
|
||
|
|
public boolean similar(Object other) {
|
||
|
|
try {
|
||
|
|
if (!(other instanceof JSONObject)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
if (!this.keySet().equals(((JSONObject)other).keySet())) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
for (final Entry<String,?> entry : this.entrySet()) {
|
||
|
|
String name = entry.getKey();
|
||
|
|
Object valueThis = entry.getValue();
|
||
|
|
Object valueOther = ((JSONObject)other).get(name);
|
||
|
|
if(valueThis == valueOther) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
if(valueThis == null) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
if (valueThis instanceof JSONObject) {
|
||
|
|
if (!((JSONObject)valueThis).similar(valueOther)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
} else if (valueThis instanceof JSONArray) {
|
||
|
|
if (!((JSONArray)valueThis).similar(valueOther)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
} else if (valueThis instanceof Number && valueOther instanceof Number) {
|
||
|
|
if (!isNumberSimilar((Number)valueThis, (Number)valueOther)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
} else if (valueThis instanceof JSONString && valueOther instanceof JSONString) {
|
||
|
|
if (!((JSONString) valueThis).toJSONString().equals(((JSONString) valueOther).toJSONString())) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
} else if (!valueThis.equals(valueOther)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
} catch (Throwable exception) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Compares two numbers to see if they are similar.
|
||
|
|
*
|
||
|
|
* If either of the numbers are Double or Float instances, then they are checked to have
|
||
|
|
* a finite value. If either value is not finite (NaN or ±infinity), then this
|
||
|
|
* function will always return false. If both numbers are finite, they are first checked
|
||
|
|
* to be the same type and implement {@link Comparable}. If they do, then the actual
|
||
|
|
* {@link Comparable#compareTo(Object)} is called. If they are not the same type, or don't
|
||
|
|
* implement Comparable, then they are converted to {@link BigDecimal}s. Finally the
|
||
|
|
* BigDecimal values are compared using {@link BigDecimal#compareTo(BigDecimal)}.
|
||
|
|
*
|
||
|
|
* @param l the Left value to compare. Can not be <code>null</code>.
|
||
|
|
* @param r the right value to compare. Can not be <code>null</code>.
|
||
|
|
* @return true if the numbers are similar, false otherwise.
|
||
|
|
*/
|
||
|
|
static boolean isNumberSimilar(Number l, Number r) {
|
||
|
|
if (!numberIsFinite(l) || !numberIsFinite(r)) {
|
||
|
|
// non-finite numbers are never similar
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// if the classes are the same and implement Comparable
|
||
|
|
// then use the built in compare first.
|
||
|
|
if(l.getClass().equals(r.getClass()) && l instanceof Comparable) {
|
||
|
|
@SuppressWarnings({ "rawtypes", "unchecked" })
|
||
|
|
int compareTo = ((Comparable)l).compareTo(r);
|
||
|
|
return compareTo==0;
|
||
|
|
}
|
||
|
|
|
||
|
|
// BigDecimal should be able to handle all of our number types that we support through
|
||
|
|
// documentation. Convert to BigDecimal first, then use the Compare method to
|
||
|
|
// decide equality.
|
||
|
|
final BigDecimal lBigDecimal = objectToBigDecimal(l, null, false);
|
||
|
|
final BigDecimal rBigDecimal = objectToBigDecimal(r, null, false);
|
||
|
|
if (lBigDecimal == null || rBigDecimal == null) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return lBigDecimal.compareTo(rBigDecimal) == 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
private static boolean numberIsFinite(Number n) {
|
||
|
|
if (n instanceof Double && (((Double) n).isInfinite() || ((Double) n).isNaN())) {
|
||
|
|
return false;
|
||
|
|
} else if (n instanceof Float && (((Float) n).isInfinite() || ((Float) n).isNaN())) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Tests if the value should be tried as a decimal. It makes no test if there are actual digits.
|
||
|
|
*
|
||
|
|
* @param val value to test
|
||
|
|
* @return true if the string is "-0" or if it contains '.', 'e', or 'E', false otherwise.
|
||
|
|
*/
|
||
|
|
protected static boolean isDecimalNotation(final String val) {
|
||
|
|
return val.indexOf('.') > -1 || val.indexOf('e') > -1
|
||
|
|
|| val.indexOf('E') > -1 || "-0".equals(val);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Converts a string to a number using the narrowest possible type. Possible
|
||
|
|
* returns for this function are BigDecimal, Double, BigInteger, Long, and Integer.
|
||
|
|
* When a Double is returned, it should always be a valid Double and not NaN or +-infinity.
|
||
|
|
*
|
||
|
|
* @param val value to convert
|
||
|
|
* @return Number representation of the value.
|
||
|
|
* @throws NumberFormatException thrown if the value is not a valid number. A public
|
||
|
|
* caller should catch this and wrap it in a {@link JSONException} if applicable.
|
||
|
|
*/
|
||
|
|
protected static Number stringToNumber(final String val) throws NumberFormatException {
|
||
|
|
char initial = val.charAt(0);
|
||
|
|
if ((initial >= '0' && initial <= '9') || initial == '-') {
|
||
|
|
// decimal representation
|
||
|
|
if (isDecimalNotation(val)) {
|
||
|
|
// Use a BigDecimal all the time so we keep the original
|
||
|
|
// representation. BigDecimal doesn't support -0.0, ensure we
|
||
|
|
// keep that by forcing a decimal.
|
||
|
|
try {
|
||
|
|
BigDecimal bd = new BigDecimal(val);
|
||
|
|
if(initial == '-' && BigDecimal.ZERO.compareTo(bd)==0) {
|
||
|
|
return Double.valueOf(-0.0);
|
||
|
|
}
|
||
|
|
return bd;
|
||
|
|
} catch (NumberFormatException retryAsDouble) {
|
||
|
|
// this is to support "Hex Floats" like this: 0x1.0P-1074
|
||
|
|
try {
|
||
|
|
Double d = Double.valueOf(val);
|
||
|
|
if(d.isNaN() || d.isInfinite()) {
|
||
|
|
throw new NumberFormatException("val ["+val+"] is not a valid number.");
|
||
|
|
}
|
||
|
|
return d;
|
||
|
|
} catch (NumberFormatException ignore) {
|
||
|
|
throw new NumberFormatException("val ["+val+"] is not a valid number.");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// block items like 00 01 etc. Java number parsers treat these as Octal.
|
||
|
|
if(initial == '0' && val.length() > 1) {
|
||
|
|
char at1 = val.charAt(1);
|
||
|
|
if(at1 >= '0' && at1 <= '9') {
|
||
|
|
throw new NumberFormatException("val ["+val+"] is not a valid number.");
|
||
|
|
}
|
||
|
|
} else if (initial == '-' && val.length() > 2) {
|
||
|
|
char at1 = val.charAt(1);
|
||
|
|
char at2 = val.charAt(2);
|
||
|
|
if(at1 == '0' && at2 >= '0' && at2 <= '9') {
|
||
|
|
throw new NumberFormatException("val ["+val+"] is not a valid number.");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// integer representation.
|
||
|
|
// This will narrow any values to the smallest reasonable Object representation
|
||
|
|
// (Integer, Long, or BigInteger)
|
||
|
|
|
||
|
|
// BigInteger down conversion: We use a similar bitLength compare as
|
||
|
|
// BigInteger#intValueExact uses. Increases GC, but objects hold
|
||
|
|
// only what they need. i.e. Less runtime overhead if the value is
|
||
|
|
// long lived.
|
||
|
|
BigInteger bi = new BigInteger(val);
|
||
|
|
if(bi.bitLength() <= 31){
|
||
|
|
return Integer.valueOf(bi.intValue());
|
||
|
|
}
|
||
|
|
if(bi.bitLength() <= 63){
|
||
|
|
return Long.valueOf(bi.longValue());
|
||
|
|
}
|
||
|
|
return bi;
|
||
|
|
}
|
||
|
|
throw new NumberFormatException("val ["+val+"] is not a valid number.");
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Try to convert a string into a number, boolean, or null. If the string
|
||
|
|
* can't be converted, return the string.
|
||
|
|
*
|
||
|
|
* @param string
|
||
|
|
* A String. can not be null.
|
||
|
|
* @return A simple JSON value.
|
||
|
|
* @throws NullPointerException
|
||
|
|
* Thrown if the string is null.
|
||
|
|
*/
|
||
|
|
// Changes to this method must be copied to the corresponding method in
|
||
|
|
// the XML class to keep full support for Android
|
||
|
|
public static Object stringToValue(String string) {
|
||
|
|
if ("".equals(string)) {
|
||
|
|
return string;
|
||
|
|
}
|
||
|
|
|
||
|
|
// check JSON key words true/false/null
|
||
|
|
if ("true".equalsIgnoreCase(string)) {
|
||
|
|
return Boolean.TRUE;
|
||
|
|
}
|
||
|
|
if ("false".equalsIgnoreCase(string)) {
|
||
|
|
return Boolean.FALSE;
|
||
|
|
}
|
||
|
|
if ("null".equalsIgnoreCase(string)) {
|
||
|
|
return JSONObject.NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* If it might be a number, try converting it. If a number cannot be
|
||
|
|
* produced, then the value will just be a string.
|
||
|
|
*/
|
||
|
|
|
||
|
|
char initial = string.charAt(0);
|
||
|
|
if ((initial >= '0' && initial <= '9') || initial == '-') {
|
||
|
|
try {
|
||
|
|
return stringToNumber(string);
|
||
|
|
} catch (Exception ignore) {
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return string;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Throw an exception if the object is a NaN or infinite number.
|
||
|
|
*
|
||
|
|
* @param o
|
||
|
|
* The object to test.
|
||
|
|
* @throws JSONException
|
||
|
|
* If o is a non-finite number.
|
||
|
|
*/
|
||
|
|
public static void testValidity(Object o) throws JSONException {
|
||
|
|
if (o instanceof Number && !numberIsFinite((Number) o)) {
|
||
|
|
throw new JSONException("JSON does not allow non-finite numbers.");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Produce a JSONArray containing the values of the members of this
|
||
|
|
* JSONObject.
|
||
|
|
*
|
||
|
|
* @param names
|
||
|
|
* A JSONArray containing a list of key strings. This determines
|
||
|
|
* the sequence of the values in the result.
|
||
|
|
* @return A JSONArray of values.
|
||
|
|
* @throws JSONException
|
||
|
|
* If any of the values are non-finite numbers.
|
||
|
|
*/
|
||
|
|
public JSONArray toJSONArray(JSONArray names) throws JSONException {
|
||
|
|
if (names == null || names.isEmpty()) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
JSONArray ja = new JSONArray();
|
||
|
|
for (int i = 0; i < names.length(); i += 1) {
|
||
|
|
ja.put(this.opt(names.getString(i)));
|
||
|
|
}
|
||
|
|
return ja;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Make a JSON text of this JSONObject. For compactness, no whitespace is
|
||
|
|
* added. If this would not result in a syntactically correct JSON text,
|
||
|
|
* then null will be returned instead.
|
||
|
|
* <p><b>
|
||
|
|
* Warning: This method assumes that the data structure is acyclical.
|
||
|
|
* </b>
|
||
|
|
*
|
||
|
|
* @return a printable, displayable, portable, transmittable representation
|
||
|
|
* of the object, beginning with <code>{</code> <small>(left
|
||
|
|
* brace)</small> and ending with <code>}</code> <small>(right
|
||
|
|
* brace)</small>.
|
||
|
|
*/
|
||
|
|
@Override
|
||
|
|
public String toString() {
|
||
|
|
try {
|
||
|
|
return this.toString(0);
|
||
|
|
} catch (Exception e) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Make a pretty-printed JSON text of this JSONObject.
|
||
|
|
*
|
||
|
|
* <p>If <pre>{@code indentFactor > 0}</pre> and the {@link JSONObject}
|
||
|
|
* has only one key, then the object will be output on a single line:
|
||
|
|
* <pre>{@code {"key": 1}}</pre>
|
||
|
|
*
|
||
|
|
* <p>If an object has 2 or more keys, then it will be output across
|
||
|
|
* multiple lines: <pre>{@code {
|
||
|
|
* "key1": 1,
|
||
|
|
* "key2": "value 2",
|
||
|
|
* "key3": 3
|
||
|
|
* }}</pre>
|
||
|
|
* <p><b>
|
||
|
|
* Warning: This method assumes that the data structure is acyclical.
|
||
|
|
* </b>
|
||
|
|
*
|
||
|
|
* @param indentFactor
|
||
|
|
* The number of spaces to add to each level of indentation.
|
||
|
|
* @return a printable, displayable, portable, transmittable representation
|
||
|
|
* of the object, beginning with <code>{</code> <small>(left
|
||
|
|
* brace)</small> and ending with <code>}</code> <small>(right
|
||
|
|
* brace)</small>.
|
||
|
|
* @throws JSONException
|
||
|
|
* If the object contains an invalid number.
|
||
|
|
*/
|
||
|
|
@SuppressWarnings("resource")
|
||
|
|
public String toString(int indentFactor) throws JSONException {
|
||
|
|
StringWriter w = new StringWriter();
|
||
|
|
synchronized (w.getBuffer()) {
|
||
|
|
return this.write(w, indentFactor, 0).toString();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Make a JSON text of an Object value. If the object has an
|
||
|
|
* value.toJSONString() method, then that method will be used to produce the
|
||
|
|
* JSON text. The method is required to produce a strictly conforming text.
|
||
|
|
* If the object does not contain a toJSONString method (which is the most
|
||
|
|
* common case), then a text will be produced by other means. If the value
|
||
|
|
* is an array or Collection, then a JSONArray will be made from it and its
|
||
|
|
* toJSONString method will be called. If the value is a MAP, then a
|
||
|
|
* JSONObject will be made from it and its toJSONString method will be
|
||
|
|
* called. Otherwise, the value's toString method will be called, and the
|
||
|
|
* result will be quoted.
|
||
|
|
*
|
||
|
|
* <p>
|
||
|
|
* Warning: This method assumes that the data structure is acyclical.
|
||
|
|
*
|
||
|
|
* @param value
|
||
|
|
* The value to be serialized.
|
||
|
|
* @return a printable, displayable, transmittable representation of the
|
||
|
|
* object, beginning with <code>{</code> <small>(left
|
||
|
|
* brace)</small> and ending with <code>}</code> <small>(right
|
||
|
|
* brace)</small>.
|
||
|
|
* @throws JSONException
|
||
|
|
* If the value is or contains an invalid number.
|
||
|
|
*/
|
||
|
|
public static String valueToString(Object value) throws JSONException {
|
||
|
|
// moves the implementation to JSONWriter as:
|
||
|
|
// 1. It makes more sense to be part of the writer class
|
||
|
|
// 2. For Android support this method is not available. By implementing it in the Writer
|
||
|
|
// Android users can use the writer with the built in Android JSONObject implementation.
|
||
|
|
return JSONWriter.valueToString(value);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Wrap an object, if necessary. If the object is <code>null</code>, return the NULL
|
||
|
|
* object. If it is an array or collection, wrap it in a JSONArray. If it is
|
||
|
|
* a map, wrap it in a JSONObject. If it is a standard property (Double,
|
||
|
|
* String, et al) then it is already wrapped. Otherwise, if it comes from
|
||
|
|
* one of the java packages, turn it into a string. And if it doesn't, try
|
||
|
|
* to wrap it in a JSONObject. If the wrapping fails, then null is returned.
|
||
|
|
*
|
||
|
|
* @param object
|
||
|
|
* The object to wrap
|
||
|
|
* @return The wrapped value
|
||
|
|
*/
|
||
|
|
public static Object wrap(Object object) {
|
||
|
|
return wrap(object, null);
|
||
|
|
}
|
||
|
|
|
||
|
|
private static Object wrap(Object object, Set<Object> objectsRecord) {
|
||
|
|
try {
|
||
|
|
if (NULL.equals(object)) {
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
if (object instanceof JSONObject || object instanceof JSONArray
|
||
|
|
|| NULL.equals(object) || object instanceof JSONString
|
||
|
|
|| object instanceof Byte || object instanceof Character
|
||
|
|
|| object instanceof Short || object instanceof Integer
|
||
|
|
|| object instanceof Long || object instanceof Boolean
|
||
|
|
|| object instanceof Float || object instanceof Double
|
||
|
|
|| object instanceof String || object instanceof BigInteger
|
||
|
|
|| object instanceof BigDecimal || object instanceof Enum) {
|
||
|
|
return object;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (object instanceof Collection) {
|
||
|
|
Collection<?> coll = (Collection<?>) object;
|
||
|
|
return new JSONArray(coll);
|
||
|
|
}
|
||
|
|
if (object.getClass().isArray()) {
|
||
|
|
return new JSONArray(object);
|
||
|
|
}
|
||
|
|
if (object instanceof Map) {
|
||
|
|
Map<?, ?> map = (Map<?, ?>) object;
|
||
|
|
return new JSONObject(map);
|
||
|
|
}
|
||
|
|
Package objectPackage = object.getClass().getPackage();
|
||
|
|
String objectPackageName = objectPackage != null ? objectPackage
|
||
|
|
.getName() : "";
|
||
|
|
if (objectPackageName.startsWith("java.")
|
||
|
|
|| objectPackageName.startsWith("javax.")
|
||
|
|
|| object.getClass().getClassLoader() == null) {
|
||
|
|
return object.toString();
|
||
|
|
}
|
||
|
|
if (objectsRecord != null) {
|
||
|
|
return new JSONObject(object, objectsRecord);
|
||
|
|
}
|
||
|
|
return new JSONObject(object);
|
||
|
|
}
|
||
|
|
catch (JSONException exception) {
|
||
|
|
throw exception;
|
||
|
|
} catch (Exception exception) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Write the contents of the JSONObject as JSON text to a writer. For
|
||
|
|
* compactness, no whitespace is added.
|
||
|
|
* <p><b>
|
||
|
|
* Warning: This method assumes that the data structure is acyclical.
|
||
|
|
* </b>
|
||
|
|
* @param writer the writer object
|
||
|
|
* @return The writer.
|
||
|
|
* @throws JSONException if a called function has an error
|
||
|
|
*/
|
||
|
|
public Writer write(Writer writer) throws JSONException {
|
||
|
|
return this.write(writer, 0, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
@SuppressWarnings("resource")
|
||
|
|
static final Writer writeValue(Writer writer, Object value,
|
||
|
|
int indentFactor, int indent) throws JSONException, IOException {
|
||
|
|
if (value == null || value.equals(null)) {
|
||
|
|
writer.write("null");
|
||
|
|
} else if (value instanceof JSONString) {
|
||
|
|
Object o;
|
||
|
|
try {
|
||
|
|
o = ((JSONString) value).toJSONString();
|
||
|
|
} catch (Exception e) {
|
||
|
|
throw new JSONException(e);
|
||
|
|
}
|
||
|
|
writer.write(o != null ? o.toString() : quote(value.toString()));
|
||
|
|
} else if (value instanceof Number) {
|
||
|
|
// not all Numbers may match actual JSON Numbers. i.e. fractions or Imaginary
|
||
|
|
final String numberAsString = numberToString((Number) value);
|
||
|
|
if(NUMBER_PATTERN.matcher(numberAsString).matches()) {
|
||
|
|
writer.write(numberAsString);
|
||
|
|
} else {
|
||
|
|
// The Number value is not a valid JSON number.
|
||
|
|
// Instead we will quote it as a string
|
||
|
|
quote(numberAsString, writer);
|
||
|
|
}
|
||
|
|
} else if (value instanceof Boolean) {
|
||
|
|
writer.write(value.toString());
|
||
|
|
} else if (value instanceof Enum<?>) {
|
||
|
|
writer.write(quote(((Enum<?>)value).name()));
|
||
|
|
} else if (value instanceof JSONObject) {
|
||
|
|
((JSONObject) value).write(writer, indentFactor, indent);
|
||
|
|
} else if (value instanceof JSONArray) {
|
||
|
|
((JSONArray) value).write(writer, indentFactor, indent);
|
||
|
|
} else if (value instanceof Map) {
|
||
|
|
Map<?, ?> map = (Map<?, ?>) value;
|
||
|
|
new JSONObject(map).write(writer, indentFactor, indent);
|
||
|
|
} else if (value instanceof Collection) {
|
||
|
|
Collection<?> coll = (Collection<?>) value;
|
||
|
|
new JSONArray(coll).write(writer, indentFactor, indent);
|
||
|
|
} else if (value.getClass().isArray()) {
|
||
|
|
new JSONArray(value).write(writer, indentFactor, indent);
|
||
|
|
} else {
|
||
|
|
quote(value.toString(), writer);
|
||
|
|
}
|
||
|
|
return writer;
|
||
|
|
}
|
||
|
|
|
||
|
|
static final void indent(Writer writer, int indent) throws IOException {
|
||
|
|
for (int i = 0; i < indent; i += 1) {
|
||
|
|
writer.write(' ');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Write the contents of the JSONObject as JSON text to a writer.
|
||
|
|
*
|
||
|
|
* <p>If <pre>{@code indentFactor > 0}</pre> and the {@link JSONObject}
|
||
|
|
* has only one key, then the object will be output on a single line:
|
||
|
|
* <pre>{@code {"key": 1}}</pre>
|
||
|
|
*
|
||
|
|
* <p>If an object has 2 or more keys, then it will be output across
|
||
|
|
* multiple lines: <pre>{@code {
|
||
|
|
* "key1": 1,
|
||
|
|
* "key2": "value 2",
|
||
|
|
* "key3": 3
|
||
|
|
* }}</pre>
|
||
|
|
* <p><b>
|
||
|
|
* Warning: This method assumes that the data structure is acyclical.
|
||
|
|
* </b>
|
||
|
|
*
|
||
|
|
* @param writer
|
||
|
|
* Writes the serialized JSON
|
||
|
|
* @param indentFactor
|
||
|
|
* The number of spaces to add to each level of indentation.
|
||
|
|
* @param indent
|
||
|
|
* The indentation of the top level.
|
||
|
|
* @return The writer.
|
||
|
|
* @throws JSONException if a called function has an error or a write error
|
||
|
|
* occurs
|
||
|
|
*/
|
||
|
|
@SuppressWarnings("resource")
|
||
|
|
public Writer write(Writer writer, int indentFactor, int indent)
|
||
|
|
throws JSONException {
|
||
|
|
try {
|
||
|
|
boolean needsComma = false;
|
||
|
|
final int length = this.length();
|
||
|
|
writer.write('{');
|
||
|
|
|
||
|
|
if (length == 1) {
|
||
|
|
final Entry<String,?> entry = this.entrySet().iterator().next();
|
||
|
|
final String key = entry.getKey();
|
||
|
|
writer.write(quote(key));
|
||
|
|
writer.write(':');
|
||
|
|
if (indentFactor > 0) {
|
||
|
|
writer.write(' ');
|
||
|
|
}
|
||
|
|
try{
|
||
|
|
writeValue(writer, entry.getValue(), indentFactor, indent);
|
||
|
|
} catch (Exception e) {
|
||
|
|
throw new JSONException("Unable to write JSONObject value for key: " + key, e);
|
||
|
|
}
|
||
|
|
} else if (length != 0) {
|
||
|
|
final int newIndent = indent + indentFactor;
|
||
|
|
for (final Entry<String,?> entry : this.entrySet()) {
|
||
|
|
if (needsComma) {
|
||
|
|
writer.write(',');
|
||
|
|
}
|
||
|
|
if (indentFactor > 0) {
|
||
|
|
writer.write('\n');
|
||
|
|
}
|
||
|
|
indent(writer, newIndent);
|
||
|
|
final String key = entry.getKey();
|
||
|
|
writer.write(quote(key));
|
||
|
|
writer.write(':');
|
||
|
|
if (indentFactor > 0) {
|
||
|
|
writer.write(' ');
|
||
|
|
}
|
||
|
|
try {
|
||
|
|
writeValue(writer, entry.getValue(), indentFactor, newIndent);
|
||
|
|
} catch (Exception e) {
|
||
|
|
throw new JSONException("Unable to write JSONObject value for key: " + key, e);
|
||
|
|
}
|
||
|
|
needsComma = true;
|
||
|
|
}
|
||
|
|
if (indentFactor > 0) {
|
||
|
|
writer.write('\n');
|
||
|
|
}
|
||
|
|
indent(writer, indent);
|
||
|
|
}
|
||
|
|
writer.write('}');
|
||
|
|
return writer;
|
||
|
|
} catch (IOException exception) {
|
||
|
|
throw new JSONException(exception);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns a java.util.Map containing all of the entries in this object.
|
||
|
|
* If an entry in the object is a JSONArray or JSONObject it will also
|
||
|
|
* be converted.
|
||
|
|
* <p>
|
||
|
|
* Warning: This method assumes that the data structure is acyclical.
|
||
|
|
*
|
||
|
|
* @return a java.util.Map containing the entries of this object
|
||
|
|
*/
|
||
|
|
public Map<String, Object> toMap() {
|
||
|
|
Map<String, Object> results = new HashMap<String, Object>();
|
||
|
|
for (Entry<String, Object> entry : this.entrySet()) {
|
||
|
|
Object value;
|
||
|
|
if (entry.getValue() == null || NULL.equals(entry.getValue())) {
|
||
|
|
value = null;
|
||
|
|
} else if (entry.getValue() instanceof JSONObject) {
|
||
|
|
value = ((JSONObject) entry.getValue()).toMap();
|
||
|
|
} else if (entry.getValue() instanceof JSONArray) {
|
||
|
|
value = ((JSONArray) entry.getValue()).toList();
|
||
|
|
} else {
|
||
|
|
value = entry.getValue();
|
||
|
|
}
|
||
|
|
results.put(entry.getKey(), value);
|
||
|
|
}
|
||
|
|
return results;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Create a new JSONException in a common format for incorrect conversions.
|
||
|
|
* @param key name of the key
|
||
|
|
* @param valueType the type of value being coerced to
|
||
|
|
* @param cause optional cause of the coercion failure
|
||
|
|
* @return JSONException that can be thrown.
|
||
|
|
*/
|
||
|
|
private static JSONException wrongValueFormatException(
|
||
|
|
String key,
|
||
|
|
String valueType,
|
||
|
|
Object value,
|
||
|
|
Throwable cause) {
|
||
|
|
if(value == null) {
|
||
|
|
|
||
|
|
return new JSONException(
|
||
|
|
"JSONObject[" + quote(key) + "] is not a " + valueType + " (null)."
|
||
|
|
, cause);
|
||
|
|
}
|
||
|
|
// don't try to toString collections or known object types that could be large.
|
||
|
|
if(value instanceof Map || value instanceof Iterable || value instanceof JSONObject) {
|
||
|
|
return new JSONException(
|
||
|
|
"JSONObject[" + quote(key) + "] is not a " + valueType + " (" + value.getClass() + ")."
|
||
|
|
, cause);
|
||
|
|
}
|
||
|
|
return new JSONException(
|
||
|
|
"JSONObject[" + quote(key) + "] is not a " + valueType + " (" + value.getClass() + " : " + value + ")."
|
||
|
|
, cause);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Create a new JSONException in a common format for recursive object definition.
|
||
|
|
* @param key name of the key
|
||
|
|
* @return JSONException that can be thrown.
|
||
|
|
*/
|
||
|
|
private static JSONException recursivelyDefinedObjectException(String key) {
|
||
|
|
return new JSONException(
|
||
|
|
"JavaBean object contains recursively defined member variable of key " + quote(key)
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|