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package org.json; import java.io.Closeable; /* 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.annotation.Annotation; import java.lang.reflect.Field; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import java.lang.reflect.Modifier; import java.math.BigDecimal; import java.math.BigInteger; 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: *

An extra , (comma) may appear just * before the closing brace.
Strings may be quoted with ' (single * quote).
Strings do not need to be quoted at all if they do not begin with a * quote or single quote, and if they do not contain leading or trailing * spaces, and if they do not contain any of these characters: * { } [ ] / \ : , # and if they do not look like numbers and * if they are not the reserved words true, false, * or null.

* * @author JSON.org * @version 2016-08-15 */ 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; } /** * A Null object is equal to the null value and to itself. * * @return always returns 0. */ @Override public int hashCode() { return 0; } /** * Get the "null" string value. * * @return The string "null". */ @Override 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() { // HashMap is used on purpose to ensure that elements are unordered by // the specification. // JSON tends to be a portable transfer format to allows the container // implementations to rearrange their items for a faster element // retrieval based on associative access. // Therefore, an implementation mustn't rely on the order of the item. 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. */ public JSONObject(JSONObject jo, String[] names) { this(names.length); for (int i = 0; i < names.length; i += 1) { try { this.putOnce(names[i], jo.opt(names[i])); } catch (Exception ignore) { } } } /** * Construct a JSONObject from a JSONTokener. * * @param x * A JSONTokener object containing the source string. * @throws JSONException * If there is a syntax error in the source string or a * duplicated key. */ public JSONObject(JSONTokener x) throws JSONException { this(); char c; String key; if (x.nextClean() != '{') { throw x.syntaxError("A JSONObject text must begin with '{'"); } for (;;) { c = x.nextClean(); switch (c) { case 0: throw x.syntaxError("A JSONObject text must end with '}'"); case '}': return; default: x.back(); key = x.nextValue().toString(); } // The key is followed by ':'. c = x.nextClean(); if (c != ':') { throw x.syntaxError("Expected a ':' after a key"); } // Use syntaxError(..) to include error location if (key != null) { // Check if key exists if (this.opt(key) != null) { // key already exists throw x.syntaxError("Duplicate key \"" + key + "\""); } // Only add value if non-null Object value = x.nextValue(); if (value!=null) { this.put(key, value); } } // Pairs are separated by ','. switch (x.nextClean()) { case ';': case ',': if (x.nextClean() == '}') { return; } x.back(); break; case '}': return; default: throw x.syntaxError("Expected a ',' or '}'"); } } } /** * Construct a JSONObject from a Map. * * @param m * A map object that can be used to initialize the contents of * the JSONObject. * @throws JSONException * If a value in the map is non-finite number. * @throws NullPointerException * If a key in the map is null */ public JSONObject(Map m) { if (m == null) { this.map = new HashMap(); } else { this.map = new HashMap(m.size()); for (final Entry e : m.entrySet()) { if(e.getKey() == null) { throw new NullPointerException("Null key."); } final Object value = e.getValue(); if (value != null) { this.map.put(String.valueOf(e.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. *

* Methods that are static, return void, * have parameters, or are "bridge" methods, are ignored. *

* 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". *

* The {@link JSONPropertyName} annotation can be used on a bean getter to * override key name used in the JSONObject. For example, using the object * above with the getName method, if we annotated it with: *

     * @JSONPropertyName("FullName")
     * public String getName() { return this.name; }
     *

* The resulting JSON object would contain "FullName": "Larry Fine" *

* Similarly, the {@link JSONPropertyName} annotation can be used on non- * get and is methods. We can also override key * name used in the JSONObject as seen below even though the field would normally * be ignored: *

     * @JSONPropertyName("FullName")
     * public String fullName() { return this.name; }
     *

* The resulting JSON object would contain "FullName": "Larry Fine" *

* The {@link JSONPropertyIgnore} annotation can be used to force the bean property * to not be serialized into JSON. If both {@link JSONPropertyIgnore} and * {@link JSONPropertyName} are defined on the same method, a depth comparison is * performed and the one closest to the concrete class being serialized is used. * If both annotations are at the same level, then the {@link JSONPropertyIgnore} * annotation takes precedent and the field is not serialized. * For example, the following declaration would prevent the getName * method from being serialized: *

     * @JSONPropertyName("FullName")
     * @JSONPropertyIgnore 
     * public String getName() { return this.name; }
     *

* * @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(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 { (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 < 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(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 null. */ 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 null. */ 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 new JSONException("JSONObject[" + key + "] is not a JSONArray."); } 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 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 getEnum(Class 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 new JSONException("JSONObject[" + quote(key) + "] is not an enum of type " + quote(clazz.getSimpleName()) + "."); } 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 new JSONException("JSONObject[" + quote(key) + "] is not a Boolean."); } /** * 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); try { return new BigInteger(object.toString()); } catch (Exception e) { throw new JSONException("JSONObject[" + quote(key) + "] could not be converted to BigInteger.", e); } } /** * Get the BigDecimal 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 BigDecimal. */ public BigDecimal getBigDecimal(String key) throws JSONException { Object object = this.get(key); if (object instanceof BigDecimal) { return (BigDecimal)object; } try { return new BigDecimal(object.toString()); } catch (Exception e) { throw new JSONException("JSONObject[" + quote(key) + "] could not be converted to BigDecimal.", e); } } /** * 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 { Object object = this.get(key); try { return object instanceof Number ? ((Number) object).doubleValue() : Double.parseDouble(object.toString()); } catch (Exception e) { throw new JSONException("JSONObject[" + quote(key) + "] is not a number.", 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 { Object object = this.get(key); try { return object instanceof Number ? ((Number) object).floatValue() : Float.parseFloat(object.toString()); } catch (Exception e) { throw new JSONException("JSONObject[" + quote(key) + "] is not a number.", 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 new JSONException("JSONObject[" + quote(key) + "] is not a number.", 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 { Object object = this.get(key); try { return object instanceof Number ? ((Number) object).intValue() : Integer.parseInt((String) object); } catch (Exception e) { throw new JSONException("JSONObject[" + quote(key) + "] is not an int.", 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 new JSONException("JSONObject[" + quote(key) + "] is not a JSONArray."); } /** * 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 new JSONException("JSONObject[" + quote(key) + "] is not a JSONObject."); } /** * 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 { Object object = this.get(key); try { return object instanceof Number ? ((Number) object).longValue() : Long.parseLong((String) object); } catch (Exception e) { throw new JSONException("JSONObject[" + quote(key) + "] is not a long.", e); } } /** * Get an array of field names from a JSONObject. * * @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 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 < 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 new JSONException("JSONObject[" + quote(key) + "] not a string."); } /** * 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. If there is such a property, and if it is * an Integer, Long, Double, or Float, then add one to it. * * @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 BigInteger) { this.put(key, ((BigInteger)value).add(BigInteger.ONE)); } else if (value instanceof BigDecimal) { this.put(key, ((BigDecimal)value).add(BigDecimal.ONE)); } 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 Double) { this.put(key, ((Double) value).doubleValue() + 1.0d); } else if (value instanceof Float) { this.put(key, ((Float) value).floatValue() + 1.0f); } else { throw new JSONException("Unable to increment [" + quote(key) + "]."); } return this; } /** * Determine if the value associated with the key is null 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 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 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 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(); } /** * Check if JSONObject is empty. * * @return true if JSONObject is empty, otherwise false. */ public boolean isEmpty() { return 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 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 optEnum(Class clazz, String key) { return this.optEnum(clazz, key, null); } /** * Get the enum value associated with a key. * * @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 clazz */ public E optEnum(Class 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. * * @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); 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){ return new BigDecimal(((Number) val).doubleValue()); } 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); 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){ 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) { Object val = this.opt(key); if (NULL.equals(val)) { return defaultValue; } if (val instanceof Number){ return ((Number) val).doubleValue(); } if (val instanceof String) { try { return Double.parseDouble((String) val); } catch (Exception e) { return defaultValue; } } return defaultValue; } /** * 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) { Object val = this.opt(key); if (JSONObject.NULL.equals(val)) { return defaultValue; } if (val instanceof Number){ return ((Number) val).floatValue(); } if (val instanceof String) { try { return Float.parseFloat((String) val); } catch (Exception e) { return defaultValue; } } return defaultValue; } /** * 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) { Object val = this.opt(key); if (NULL.equals(val)) { return defaultValue; } if (val instanceof Number){ return ((Number) val).intValue(); } if (val instanceof String) { try { return new BigDecimal((String) val).intValue(); } catch (Exception e) { return defaultValue; } } return defaultValue; } /** * 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) { Object object = this.opt(key); return object instanceof JSONObject ? (JSONObject) object : null; } /** * 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) { Object val = this.opt(key); if (NULL.equals(val)) { return defaultValue; } if (val instanceof Number){ return ((Number) val).longValue(); } if (val instanceof String) { try { return new BigDecimal((String) val).longValue(); } catch (Exception e) { return defaultValue; } } return defaultValue; } /** * Get an optional {@link Number} value associated with a key, or null * 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; } if (val instanceof String) { try { return stringToNumber((String) val); } catch (Exception e) { return defaultValue; } } 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) { 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) { this.map.put(key, wrap(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 boolean isValidMethodName(String name) { return !"getClass".equals(name) && !"getDeclaringClass".equals(name); } private 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 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 (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 * 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 it's super class definitions */ private static A getAnnotation(final Method m, final Class 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 * type of the annotation * * @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