net.minidev.json.JSONValue Maven / Gradle / Ivy
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package net.minidev.json;
/*
* Copyright 2011 JSON-SMART authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import static net.minidev.json.parser.JSONParser.DEFAULT_PERMISSIVE_MODE;
import static net.minidev.json.parser.JSONParser.MODE_RFC4627;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import java.util.List;
import java.util.Map;
import net.minidev.json.parser.JSONParser;
import net.minidev.json.parser.ParseException;
import net.minidev.json.reader.JsonWriter;
import net.minidev.json.reader.JsonWriterI;
import net.minidev.json.writer.CompessorMapper;
import net.minidev.json.writer.FakeMapper;
import net.minidev.json.writer.JsonReaderI;
import net.minidev.json.writer.JsonReader;
import net.minidev.json.writer.UpdaterMapper;
/**
* JSONValue is the helper class In most of case you should use those static
* methode to user JSON-smart
*
*
* The most commonly use methode are {@link #parse(String)}
* {@link #toJSONString(Object)}
*
* @author Uriel Chemouni
*/
public class JSONValue {
/**
* Global default compression type
*/
public static JSONStyle COMPRESSION = JSONStyle.NO_COMPRESS;
/**
* Parse JSON text into java object from the input source. Please use
* parseWithException() if you don't want to ignore the exception. if you
* want strict input check use parseStrict()
*
* @see JSONParser#parse(Reader)
* @see #parseWithException(Reader)
*
* @return Instance of the following: JSONObject, JSONArray, String,
* java.lang.Number, java.lang.Boolean, null
*
*/
public static Object parse(InputStream in) {
try {
return new JSONParser(DEFAULT_PERMISSIVE_MODE).parse(in);
} catch (Exception e) {
return null;
}
}
/**
* Parse JSON text into java object from the input source. Please use
* parseWithException() if you don't want to ignore the exception. if you
* want strict input check use parseStrict()
*
* @see JSONParser#parse(Reader)
* @see #parseWithException(Reader)
*
* @return Instance of the following: JSONObject, JSONArray, String,
* java.lang.Number, java.lang.Boolean, null
*
*/
public static Object parse(byte[] in) {
try {
return new JSONParser(DEFAULT_PERMISSIVE_MODE).parse(in);
} catch (Exception e) {
return null;
}
}
/**
* Parse input json as a mapTo class
*
* mapTo can be a bean
*
* @since 2.0
*/
public static T parse(InputStream in, Class mapTo) {
try {
JSONParser p = new JSONParser(DEFAULT_PERMISSIVE_MODE);
return p.parse(in, defaultReader.getMapper(mapTo));
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* Parse JSON text into java object from the input source. Please use
* parseWithException() if you don't want to ignore the exception. if you
* want strict input check use parseStrict()
*
* @see JSONParser#parse(Reader)
* @see #parseWithException(Reader)
*
* @return Instance of the following: JSONObject, JSONArray, String,
* java.lang.Number, java.lang.Boolean, null
*
*/
public static Object parse(Reader in) {
try {
return new JSONParser(DEFAULT_PERMISSIVE_MODE).parse(in);
} catch (Exception e) {
return null;
}
}
/**
* Parse input json as a mapTo class
*
* mapTo can be a bean
*
* @since 2.0
*/
public static T parse(byte[] in, Class mapTo) {
try {
JSONParser p = new JSONParser(DEFAULT_PERMISSIVE_MODE);
return p.parse(in, defaultReader.getMapper(mapTo));
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* Parse input json as a mapTo class
*
* mapTo can be a bean
*
* @since 2.0
*/
public static T parse(Reader in, Class mapTo) {
try {
JSONParser p = new JSONParser(DEFAULT_PERMISSIVE_MODE);
return p.parse(in, defaultReader.getMapper(mapTo));
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* Parse input json as a mapTo class
*
* mapTo can be a bean
*
* @since 2.0
*/
public static T parse(Reader in, T toUpdate) {
try {
JSONParser p = new JSONParser(DEFAULT_PERMISSIVE_MODE);
return p.parse(in, new UpdaterMapper(defaultReader, toUpdate));
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* Parse input json as a mapTo class
*
* @since 2.0
*/
protected static T parse(Reader in, JsonReaderI mapper) {
try {
JSONParser p = new JSONParser(DEFAULT_PERMISSIVE_MODE);
return p.parse(in, mapper);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* Parse input json as a mapTo class
*
* mapTo can be a bean
*
* @since 2.0
*/
public static T parse(String in, Class mapTo) {
try {
JSONParser p = new JSONParser(DEFAULT_PERMISSIVE_MODE);
return p.parse(in, defaultReader.getMapper(mapTo));
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* Parse input json as a mapTo class
*
* mapTo can be a bean
*
* @since 2.0
*/
public static T parse(InputStream in, T toUpdate) {
try {
JSONParser p = new JSONParser(DEFAULT_PERMISSIVE_MODE);
return p.parse(in, new UpdaterMapper(defaultReader, toUpdate));
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* Parse input json as a mapTo class
*
* mapTo can be a bean
*
* @since 2.0
*/
public static T parse(String in, T toUpdate) {
try {
JSONParser p = new JSONParser(DEFAULT_PERMISSIVE_MODE);
return p.parse(in, new UpdaterMapper(defaultReader, toUpdate));
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* Parse input json as a mapTo class
*
* @since 2.0
*/
protected static T parse(byte[] in, JsonReaderI mapper) {
try {
JSONParser p = new JSONParser(DEFAULT_PERMISSIVE_MODE);
return p.parse(in, mapper);
} catch (Exception e) {
return null;
}
}
/**
* Parse input json as a mapTo class
*
* @since 2.0
*/
protected static T parse(String in, JsonReaderI mapper) {
try {
JSONParser p = new JSONParser(DEFAULT_PERMISSIVE_MODE);
return p.parse(in, mapper);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* Parse JSON text into java object from the input source. Please use
* parseWithException() if you don't want to ignore the exception. if you
* want strict input check use parseStrict()
*
* @see JSONParser#parse(String)
* @see #parseWithException(String)
*
* @return Instance of the following: JSONObject, JSONArray, String,
* java.lang.Number, java.lang.Boolean, null
*
*/
public static Object parse(String s) {
try {
return new JSONParser(DEFAULT_PERMISSIVE_MODE).parse(s);
} catch (Exception e) {
return null;
}
}
/**
* Parse Json input to a java Object keeping element order
*
* @since 1.0.6.1
*/
public static Object parseKeepingOrder(Reader in) {
try {
return new JSONParser(DEFAULT_PERMISSIVE_MODE).parse(in, defaultReader.DEFAULT_ORDERED);
} catch (Exception e) {
return null;
}
}
/**
* Parse Json input to a java Object keeping element order
*
* @since 1.0.6.1
*/
public static Object parseKeepingOrder(String in) {
try {
return new JSONParser(DEFAULT_PERMISSIVE_MODE).parse(in, defaultReader.DEFAULT_ORDERED);
} catch (Exception e) {
return null;
}
}
/**
* Parse Json Using SAX event handler
*
* @since 1.0.6.2
* @removed in 2.0
*/
// public static void SAXParse(String input, ContentHandler handler) throws
// ParseException {
// }
/**
* Parse Json Using SAX event handler
*
* @since 1.0.6.2
* @removed in 2.0
*/
// public static void SAXParse(Reader input, ContentHandler handler) throws
// ParseException, IOException {
// }
/**
* Reformat Json input keeping element order
*
* @since 1.0.6.2
*
* need to be rewrite in 2.0
*/
public static String compress(String input, JSONStyle style) {
try {
StringBuilder sb = new StringBuilder();
new JSONParser(DEFAULT_PERMISSIVE_MODE).parse(input, new CompessorMapper(defaultReader, sb, style));
return sb.toString();
} catch (Exception e) {
e.printStackTrace();
return input;
}
}
/**
* Compress Json input keeping element order
*
* @since 1.0.6.1
*
* need to be rewrite in 2.0
*/
public static String compress(String input) {
return compress(input, JSONStyle.MAX_COMPRESS);
}
/**
* Compress Json input keeping element order
*
* @since 1.0.6.1
*/
public static String uncompress(String input) {
return compress(input, JSONStyle.NO_COMPRESS);
}
/**
* Parse JSON text into java object from the input source.
*
* @see JSONParser
*
* @return Instance of the following: JSONObject, JSONArray, String,
* java.lang.Number, java.lang.Boolean, null
*/
public static Object parseWithException(byte[] in) throws IOException, ParseException {
return new JSONParser(DEFAULT_PERMISSIVE_MODE).parse(in, defaultReader.DEFAULT);
}
/**
* Parse JSON text into java object from the input source.
*
* @see JSONParser
*
* @return Instance of the following: JSONObject, JSONArray, String,
* java.lang.Number, java.lang.Boolean, null
*/
public static Object parseWithException(InputStream in) throws IOException, ParseException {
return new JSONParser(DEFAULT_PERMISSIVE_MODE).parse(in, defaultReader.DEFAULT);
}
/**
* Parse JSON text into java object from the input source.
*
* @see JSONParser
*
* @return Instance of the following: JSONObject, JSONArray, String,
* java.lang.Number, java.lang.Boolean, null
*/
public static Object parseWithException(Reader in) throws IOException, ParseException {
return new JSONParser(DEFAULT_PERMISSIVE_MODE).parse(in, defaultReader.DEFAULT);
}
/**
* Parse JSON text into java object from the input source.
*
* @see JSONParser
*
* @return Instance of the following: JSONObject, JSONArray, String,
* java.lang.Number, java.lang.Boolean, null
*/
public static Object parseWithException(String s) throws ParseException {
return new JSONParser(DEFAULT_PERMISSIVE_MODE).parse(s, defaultReader.DEFAULT);
}
/**
* Parse input json as a mapTo class
*
* mapTo can be a bean
*
* @since 2.0
*/
public static T parseWithException(String in, Class mapTo) throws ParseException {
JSONParser p = new JSONParser(DEFAULT_PERMISSIVE_MODE);
return p.parse(in, defaultReader.getMapper(mapTo));
}
/**
* Parse valid RFC4627 JSON text into java object from the input source.
*
* @see JSONParser
*
* @return Instance of the following: JSONObject, JSONArray, String,
* java.lang.Number, java.lang.Boolean, null
*/
public static Object parseStrict(Reader in) throws IOException, ParseException {
return new JSONParser(MODE_RFC4627).parse(in, defaultReader.DEFAULT);
}
/**
* Parse valid RFC4627 JSON text into java object from the input source.
*
* @see JSONParser
*
* @return Instance of the following: JSONObject, JSONArray, String,
* java.lang.Number, java.lang.Boolean, null
*/
public static Object parseStrict(String s) throws ParseException {
return new JSONParser(MODE_RFC4627).parse(s, defaultReader.DEFAULT);
}
/**
* Check RFC4627 Json Syntax from input Reader
*
* @return if the input is valid
*/
public static boolean isValidJsonStrict(Reader in) throws IOException {
try {
new JSONParser(MODE_RFC4627).parse(in, FakeMapper.DEFAULT);
return true;
} catch (ParseException e) {
return false;
}
}
/**
* check RFC4627 Json Syntax from input String
*
* @return if the input is valid
*/
public static boolean isValidJsonStrict(String s) {
try {
new JSONParser(MODE_RFC4627).parse(s, FakeMapper.DEFAULT);
return true;
} catch (ParseException e) {
return false;
}
}
/**
* Check Json Syntax from input Reader
*
* @return if the input is valid
*/
public static boolean isValidJson(Reader in) throws IOException {
try {
new JSONParser(DEFAULT_PERMISSIVE_MODE).parse(in, FakeMapper.DEFAULT);
return true;
} catch (ParseException e) {
return false;
}
}
/**
* Check Json Syntax from input String
*
* @return if the input is valid
*/
public static boolean isValidJson(String s) {
try {
new JSONParser(DEFAULT_PERMISSIVE_MODE).parse(s, FakeMapper.DEFAULT);
return true;
} catch (ParseException e) {
return false;
}
}
/**
* Encode an object into JSON text and write it to out.
*
* If this object is a Map or a List, and it's also a JSONStreamAware or a
* JSONAware, JSONStreamAware or JSONAware will be considered firstly.
*
*
* @see JSONObject#writeJSON(Map, Appendable)
* @see JSONArray#writeJSONString(List, Appendable)
*/
public static void writeJSONString(Object value, Appendable out) throws IOException {
writeJSONString(value, out, COMPRESSION);
}
/**
* Serialisation class Data
*/
public final static JsonWriter defaultWriter = new JsonWriter();
/**
* deserialisation class Data
*/
public final static JsonReader defaultReader = new JsonReader();
/**
* Register a serializer for a class.
*/
public static void registerWriter(Class cls, JsonWriterI writer) {
defaultWriter.registerWriter(writer, cls);
}
/**
* register a deserializer for a class.
*/
public static void registerReader(Class type, JsonReaderI mapper) {
defaultReader.registerReader(type, mapper);
}
/**
* Encode an object into JSON text and write it to out.
*
* If this object is a Map or a List, and it's also a JSONStreamAware or a
* JSONAware, JSONStreamAware or JSONAware will be considered firstly.
*
*
* @see JSONObject#writeJSON(Map, Appendable)
* @see JSONArray#writeJSONString(List, Appendable)
*/
@SuppressWarnings("unchecked")
public static void writeJSONString(Object value, Appendable out, JSONStyle compression) throws IOException {
if (value == null) {
out.append("null");
return;
}
Class clz = value.getClass();
@SuppressWarnings("rawtypes")
JsonWriterI w = defaultWriter.getWrite(clz);
if (w == null) {
if ((value instanceof JSONStreamAware)) {
if (value instanceof JSONStreamAwareEx)
w = JsonWriter.JSONStreamAwareExWriter;
else
w = JsonWriter.JSONStreamAwareWriter;
} else if ((value instanceof JSONAware)) {
if ((value instanceof JSONAwareEx))
w = JsonWriter.JSONJSONAwareExWriter;
else
w = JsonWriter.JSONJSONAwareWriter;
} else if (value instanceof Map)
w = JsonWriter.JSONMapWriter;
else if (value instanceof Iterable)
w = JsonWriter.JSONIterableWriter;
else if (value instanceof Enum)
w = JsonWriter.EnumWriter;
else if (clz.isArray())
w = JsonWriter.arrayWriter;
else
w = JsonWriter.beansWriterASM;
defaultWriter.registerWriter(w, clz);
}
w.writeJSONString(value, out, compression);
}
/**
* Encode an object into JSON text and write it to out.
*
* If this object is a Map or a List, and it's also a JSONStreamAware or a
* JSONAware, JSONStreamAware or JSONAware will be considered firstly.
*
*
* @see JSONObject#writeJSON(Map, Appendable)
* @see JSONArray#writeJSONString(List, Appendable)
*/
public static String toJSONString(Object value) {
return toJSONString(value, COMPRESSION);
}
/**
* Convert an object to JSON text.
*
* If this object is a Map or a List, and it's also a JSONAware, JSONAware
* will be considered firstly.
*
* DO NOT call this method from toJSONString() of a class that implements
* both JSONAware and Map or List with "this" as the parameter, use
* JSONObject.toJSONString(Map) or JSONArray.toJSONString(List) instead.
*
* @see JSONObject#toJSONString(Map)
* @see JSONArray#toJSONString(List)
*
* @return JSON text, or "null" if value is null or it's an NaN or an INF
* number.
*/
public static String toJSONString(Object value, JSONStyle compression) {
StringBuilder sb = new StringBuilder();
try {
writeJSONString(value, sb, compression);
} catch (IOException e) {
// can not append on a StringBuilder
}
return sb.toString();
}
public static String escape(String s) {
return escape(s, COMPRESSION);
}
/**
* Escape quotes, \, /, \r, \n, \b, \f, \t and other control characters
* (U+0000 through U+001F).
*/
public static String escape(String s, JSONStyle compression) {
if (s == null)
return null;
StringBuilder sb = new StringBuilder();
compression.escape(s, sb);
return sb.toString();
}
public static void escape(String s, Appendable ap) {
escape(s, ap, COMPRESSION);
}
public static void escape(String s, Appendable ap, JSONStyle compression) {
if (s == null)
return;
compression.escape(s, ap);
}
}