FastJson和Gson的使用方法

1.fastJson
a. pom.xml

<dependency>
	<groupId>com.alibaba</groupId>
	<artifactId>fastjson</artifactId>
	<version>1.2.58</version>
</dependency>

b.api
(1)obj->jsonStr
String jsonStr = JSON.toJSONString(obj);

(2)jsonStr->obj
Obj obj= JSON.parseObject(jsonStr, Obj.class);

2.gson
a.pom.xml

<dependency>
	<groupId>com.google.code.gson</groupId>
	 <artifactId>gson</artifactId>
	<version>2.8.5</version>
</dependency>

b.api
(1)obj->jsonStr
Gson gson = new Gson();
String jsonStr = gson .toJson(obj);

(2)jsonStr->obj
Gson gson = new Gson();
Obj obj= gson.fromJson(jsonStr, Obj.class);