json工具@2018-10-29

1、gjson

 	   toJson(Object)
	   fromJson(String, Class)
	   TypeToken<T>

Gson gson = new Gson();
User user = new User("怪盗kidou",24);
String jsonObject = gson.toJson(user); // {"name":"怪盗kidou","age":24}

Gson gson = new Gson();
String jsonString = "{\"name\":\"怪盗kidou\",\"age\":24}";
User user = gson.fromJson(jsonString, User.class);

2、json-lib

		JSONObject
		JSONArray
		
		fromObject(Object) //中间对旬 JSONObject
		toString() //实例方法，返回json字符串
		toBean (JSONObject,Class ) //返回对象
	
	
		fromObject(Object) //中间对旬 JSONObject
		toString() //实例方法，返回json字符串
		toCollection(JSONArray, Class) //返回集合

3、fastJSON

		JSON  
		toJSONString(Object）
		parseObject(String, Class<T>)
		parseArray(String, Class<T>)