package org.json; /* Copyright (c) 2002 JSON.org Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. The Software shall be used for Good, not Evil. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ import java.io.IOException; import java.io.StringWriter; import java.io.Writer; import java.lang.reflect.Field; import java.lang.reflect.Method; import java.lang.reflect.Modifier; import java.util.Collection; import java.util.Enumeration; import java.util.HashMap; import java.util.Iterator; import java.util.Locale; import java.util.Map; import java.util.Map.Entry; import java.util.ResourceBundle; import java.util.Set; /** * A JSONObject is an unordered collection of name/value pairs. Its external * form is a string wrapped in curly braces with colons between the names and * values, and commas between the values and names. The internal form is an * object having get and opt methods for accessing * the values by name, and put methods for adding or replacing * values by name. The values can be any of these types: Boolean, * JSONArray, JSONObject, Number, * String, or the JSONObject.NULL object. A * JSONObject constructor can be used to convert an external form JSON text * into an internal form whose values can be retrieved with the * get and opt methods, or to convert values into a * JSON text using the put and toString methods. A * get method returns a value if one can be found, and throws an * exception if one cannot be found. An opt method returns a * default value instead of throwing an exception, and so is useful for * obtaining optional values. *

* The generic get() and opt() methods return an * object, which you can cast or query for type. There are also typed * get and opt methods that do type checking and type * coercion for you. The opt methods differ from the get methods in that they * do not throw. Instead, they return a specified value, such as null. *

* The put methods add or replace values in an object. For * example, * * 

 * myString = new JSONObject()
 *         .put("JSON", "Hello, World!").toString();
 *
* * produces the string {"JSON": "Hello, World"}. *

* The texts produced by the toString methods strictly conform to * the JSON syntax rules. The constructors are more forgiving in the texts they * will accept: *

* * @author JSON.org * @version 2014-05-03 */ public class JSONObject { /** * JSONObject.NULL is equivalent to the value that JavaScript calls null, * whilst Java's null is equivalent to the value that JavaScript calls * undefined. */ private static final class Null { /** * There is only intended to be a single instance of the NULL object, * so the clone method returns itself. * * @return NULL. */ @Override protected final Object clone() { return this; } /** * A Null object is equal to the null value and to itself. * * @param object * An object to test for nullness. * @return true if the object parameter is the JSONObject.NULL object or * null. */ @Override public boolean equals(Object object) { return object == null || object == this; } /** * Get the "null" string value. * * @return The string "null". */ public String toString() { return "null"; } } /** * The map where the JSONObject's properties are kept. */ private final Map map; /** * It is sometimes more convenient and less ambiguous to have a * NULL object than to use Java's null value. * JSONObject.NULL.equals(null) returns true. * JSONObject.NULL.toString() returns "null". */ public static final Object NULL = new Null(); /** * Construct an empty JSONObject. */ public JSONObject() { this.map = new HashMap(); } /** * Construct a JSONObject from a subset of another JSONObject. An array of * strings is used to identify the keys that should be copied. Missing keys * are ignored. * * @param jo * A JSONObject. * @param names * An array of strings. * @throws JSONException * @exception JSONException * If a value is a non-finite number or if a name is * duplicated. */ public JSONObject(JSONObject jo, String[] names) { this(); for (int i = 0; i map) { this.map = new HashMap(); if (map != null) { Iterator> i = map.entrySet().iterator(); while (i.hasNext()) { Entry entry = i.next(); Object value = entry.getValue(); if (value != null) { this.map.put(entry.getKey(), wrap(value)); } } } } /** * Construct a JSONObject from an Object using bean getters. It reflects on * all of the public methods of the object. For each of the methods with no * parameters and a name starting with "get" or * "is" followed by an uppercase letter, the method is invoked, * and a key and the value returned from the getter method are put into the * new JSONObject. * * The key is formed by removing the "get" or "is" * prefix. If the second remaining character is not upper case, then the * first character is converted to lower case. * * For example, if an object has a method named "getName", and * if the result of calling object.getName() is * "Larry Fine", then the JSONObject will contain * "name": "Larry Fine". * * @param bean * An object that has getter methods that should be used to make * a JSONObject. */ public JSONObject(Object bean) { this(); this.populateMap(bean); } /** * Construct a JSONObject from an Object, using reflection to find the * public members. The resulting JSONObject's keys will be the strings from * the names array, and the values will be the field values associated with * those keys in the object. If a key is not found or not visible, then it * will not be copied into the new JSONObject. * * @param object * 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(); Class c = object.getClass(); for (int i = 0; i { (left * brace) and ending with } *  (right brace). * @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 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 0 && string.indexOf('e') iterator = jo.keys(); String[] names = new String[length]; int i = 0; while (iterator.hasNext()) { names[i] = iterator.next(); i += 1; } return names; } /** * Get an array of field names from an Object. * * @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 keys() { return this.keySet().iterator(); } /** * Get a set of keys of the JSONObject. * * @return A keySet. */ public Set keySet() { return this.map.keySet(); } /** * Get the number of keys stored in the JSONObject. * * @return The number of keys in the JSONObject. */ public int length() { return this.map.size(); } /** * 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() { JSONArray ja = new JSONArray(); Iterator keys = this.keys(); while (keys.hasNext()) { ja.put(keys.next()); } return ja.length() == 0 ? null : ja; } /** * 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 && Character.isUpperCase(key.charAt(0)) && method.getParameterTypes().length == 0) { if (key.length() == 1) { key = key.toLowerCase(); } else if (!Character.isUpperCase(key.charAt(1))) { key = key.substring(0, 1).toLowerCase() + key.substring(1); } Object result = method.invoke(bean, (Object[]) null); if (result != null) { this.map.put(key, wrap(result)); } } } } catch (Exception ignore) { } } } /** * 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 key is null. */ public JSONObject put(String key, boolean value) throws JSONException { this.put(key, value ? Boolean.TRUE : Boolean.FALSE); return this; } /** * 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 */ public JSONObject put(String key, Collection value) throws JSONException { this.put(key, new JSONArray(value)); return this; } /** * 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 key is null or if the number is invalid. */ public JSONObject put(String key, double value) throws JSONException { this.put(key, new Double(value)); return this; } /** * 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 key is null. */ public JSONObject put(String key, int value) throws JSONException { this.put(key, new Integer(value)); return this; } /** * 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 key is null. */ public JSONObject put(String key, long value) throws JSONException { this.put(key, new Long(value)); return this; } /** * 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 */ public JSONObject put(String key, Map value) throws JSONException { this.put(key, new JSONObject(value)); return this; } /** * Put a key/value pair in the JSONObject. If the value is null, 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 or if the key is null. */ 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 string * @param value object * @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 + "\""); } 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) { this.put(key, value); } return this; } /** * Produce a string in double quotes with backslash sequences in all the * right places. A backslash will be inserted within , producing = '\u0080' && c = '\u2000' && c set = this.keySet(); if (!set.equals(((JSONObject)other).keySet())) { return false; } Iterator iterator = set.iterator(); while (iterator.hasNext()) { String name = iterator.next(); Object valueThis = this.get(name); Object valueOther = ((JSONObject)other).get(name); 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.equals(valueOther)) { return false; } } return true; } catch (Throwable exception) { return false; } } /** * 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. * @return A simple JSON value. */ public static Object stringToValue(String string) { Double d; if (string.equals("")) { return string; } if (string.equalsIgnoreCase("true")) { return Boolean.TRUE; } if (string.equalsIgnoreCase("false")) { return Boolean.FALSE; } if (string.equalsIgnoreCase("null")) { 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 b = string.charAt(0); if ((b >= '0' && b -1 || string.indexOf('e') > -1 || string.indexOf('E') > -1) { d = Double.valueOf(string); if (!d.isInfinite() && !d.isNaN()) { return d; } } else { Long myLong = new Long(string); if (string.equals(myLong.toString())) { if (myLong == myLong.intValue()) { return myLong.intValue(); } else { return myLong; } } } } 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 != null) { if (o instanceof Double) { if (((Double) o).isInfinite() || ((Double) o).isNaN()) { throw new JSONException( "JSON does not allow non-finite numbers."); } } else if (o instanceof Float) { if (((Float) o).isInfinite() || ((Float) o).isNaN()) { 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.length() == 0) { return null; } JSONArray ja = new JSONArray(); for (int i = 0; i * Warning: This method assumes that the data structure is acyclical. * * @return a printable, displayable, portable, transmittable representation * of the object, beginning with { (left * brace) and ending with } (right * brace). */ public String toString() { try { return this.toString(0); } catch (Exception e) { return null; } } /** * Make a prettyprinted JSON text of this JSONObject. *

* Warning: This method assumes that the data structure is acyclical. * * @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 { (left * brace) and ending with } (right * brace). * @throws JSONException * If the object contains an invalid number. */ 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. * *

* 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 { (left * brace) and ending with } (right * brace). * @throws JSONException * If the value is or contains an invalid number. */ public static String valueToString(Object value) throws JSONException { if (value == null || value.equals(null)) { return "null"; } if (value instanceof JSONString) { Object object; try { object = ((JSONString) value).toJSONString(); } catch (Exception e) { throw new JSONException(e); } if (object instanceof String) { return (String) object; } throw new JSONException("Bad value from toJSONString: " + object); } if (value instanceof Number) { return numberToString((Number) value); } if (value instanceof Boolean || value instanceof JSONObject || value instanceof JSONArray) { return value.toString(); } if (value instanceof Map) { return new JSONObject((Map)value).toString(); } if (value instanceof Collection) { return new JSONArray((Collection) value).toString(); } if (value.getClass().isArray()) { return new JSONArray(value).toString(); } return quote(value.toString()); } /** * Wrap an object, if necessary. If the object is null, 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) { try { if (object == null) { 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) { return object; } if (object instanceof Collection) { return new JSONArray((Collection) object); } if (object.getClass().isArray()) { return new JSONArray(object); } if (object instanceof Map) { return new JSONObject((Map) object); } 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(); } return new JSONObject(object); } catch (Exception exception) { return null; } } /** * Write the contents of the JSONObject as JSON text to a writer. For * compactness, no whitespace is added. *

* Warning: This method assumes that the data structure is acyclical. * * @return The writer. * @throws JSONException */ public Writer write(Writer writer) throws JSONException { return this.write(writer, 0, 0); } 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 JSONObject) { ((JSONObject) value).write(writer, indentFactor, indent); } else if (value instanceof JSONArray) { ((JSONArray) value).write(writer, indentFactor, indent); } else if (value instanceof Map) { new JSONObject((Map) value).write(writer, indentFactor, indent); } else if (value instanceof Collection) { new JSONArray((Collection) value).write(writer, indentFactor, indent); } else if (value.getClass().isArray()) { new JSONArray(value).write(writer, indentFactor, indent); } else if (value instanceof Number) { writer.write(numberToString((Number) value)); } else if (value instanceof Boolean) { writer.write(value.toString()); } 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 { quote(value.toString(), writer); } return writer; } static final void indent(Writer writer, int indent) throws IOException { for (int i = 0; i * Warning: This method assumes that the data structure is acyclical. * * @return The writer. * @throws JSONException */ Writer write(Writer writer, int indentFactor, int indent) throws JSONException { try { boolean commanate = false; final int length = this.length(); Iterator keys = this.keys(); writer.write('{'); if (length == 1) { Object key = keys.next(); writer.write(quote(key.toString())); writer.write(':'); if (indentFactor > 0) { writer.write(' '); } writeValue(writer, this.map.get(key), indentFactor, indent); } else if (length != 0) { final int newindent = indent + indentFactor; while (keys.hasNext()) { Object key = keys.next(); if (commanate) { writer.write(','); } if (indentFactor > 0) { writer.write('\n'); } indent(writer, newindent); writer.write(quote(key.toString())); writer.write(':'); if (indentFactor > 0) { writer.write(' '); } writeValue(writer, this.map.get(key), indentFactor, newindent); commanate = true; } if (indentFactor > 0) { writer.write('\n'); } indent(writer, indent); } writer.write('}'); return writer; } catch (IOException exception) { throw new JSONException(exception); } } }