Fastjson API中文版

JSON这个类是fastjson API的入口，主要的功能都通过这个类提供。

序列化API

package com.alibaba.fastjson;public abstract class JSON { // 将Java对象序列化为JSON字符串，支持各种各种Java基本类型和JavaBean public static String toJSONString(Object object, SerializerFeature... features); // 将Java对象序列化为JSON字符串，返回JSON字符串的utf-8 bytes public static byte[] toJSONBytes(Object object, SerializerFeature... features); // 将Java对象序列化为JSON字符串，写入到Writer中 public static void writeJSONString(Writer writer, Object object, SerializerFeature... features); // 将Java对象序列化为JSON字符串，按UTF-8编码写入到OutputStream中 public static final int writeJSONString(OutputStream os, // Object object, // SerializerFeature... features); }

JSON字符串反序列化API

package com.alibaba.fastjson; public abstract class JSON { // 将JSON字符串反序列化为JavaBean public static  T parseObject(String jsonStr, Class clazz, Feature... features); // 将JSON字符串反序列化为JavaBean public static  T parseObject(byte[] jsonBytes, // UTF-8格式的JSON字符串 Class clazz, Feature... features); // 将JSON字符串反序列化为泛型类型的JavaBean public static  T parseObject(String text, TypeReference type, Feature... features); // 将JSON字符串反序列为JSONObject public static JSONObject parseObject(String text); }

Demo

parse Tree

import com.alibaba.fastjson.*; JSONObject jsonObj = JSON.parseObject(jsonStr);

parse POJO

import com.alibaba.fastjson.JSON; Model model = JSON.parseObject(jsonStr, Model.class);

parse POJO Generic

import com.alibaba.fastjson.JSON; Type type = new TypeReference>() {}.getType(); List list = JSON.parseObject(jsonStr, type);

convert POJO to json string

import com.alibaba.fastjson.JSON;Model model = ...; String jsonStr = JSON.toJSONString(model);

convert POJO to json bytes

import com.alibaba.fastjson.JSON;Model model = ...; byte[] jsonBytes = JSON.toJSONBytes(model);

write POJO as json string to OutputStream

import com.alibaba.fastjson.JSON;Model model = ...; OutputStream os;JSON.writeJSONString(os, model);

write POJO as json string to Writer

import com.alibaba.fastjson.JSON; Model model = ...; Writer writer = ...; JSON.writeJSONString(writer, model);