博客

一、导入jar包

<dependency>

<groupId>com.alibaba</groupId>

<artifactId>fastjson</artifactId>

<version>1.2.47</version>

</dependency>

二、Map转实体类

Map map = new HashMap();

map.put(“username”, “张三”);

map.put(“password”, “123456”);

JSON json = (JSON) JSON.toJSON(map);

Student student = (Student)JSONObject.toJavaObject((JSON)JSONObject.toJSON(map), Student.class);

打印内容

System.out.println(“json”+ json);

System.out.println(“student”+student)

json:{“password”:”123456″,”username”:”张三”}

student:com.houz.emtity.Student@1175e2db

三、实体类转Map

Student s = new Student();

s.setName(“李四”);

s.setId(“002”);

s.setAge(12);

JSON jsons = (JSON)JSON.toJSON(s);

Map paramMap = (Map)JSONObject.parseObject(jsons.toString());

打印内容是

System.out.println(“jsons:”+jsons);

paramMap.put(“nick”, “就是”);

System.out.println(“paramMap”+paramMap);

jsons:{“name”:”李四”,”id”:”002″,”age”:12}

paramMap{“nick”:”就是”,”name”:”李四”,”id”:”002″,”age”:12}