一、添加gson依赖
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
</dependency>
二、常见用法
1. 生成JSON：
Gson gson = new Gson();
User user = new User("张三",24);
String jsonObject = gson.toJson(user); // {"name":"张三kidou","age":24}
2. 解析JSON：
Gson gson = new Gson();
String jsonString = "{\"name\":\"张三\",\"age\":24}";
User user = gson.fromJson(jsonString, User.class);
3. map转JSON
/**
* 将Map转化为Json
*
* @param map
* @return String
*/
public static <T> String mapToJson(Map<String, T> map) {
Gson gson = new Gson();
String jsonStr = gson.toJson(map);
return jsonStr;
}
