map2json

public void mapToJson(){

Map<String, Object> map = new HashMap<String, Object>();

map.put("name", "张三");

map.put("age", "12");

map.put("address", "山东");

JSONObject jsonObject = JSONObject.fromObject(map);

System.out.println(jsonObject);

}

输出结果为：{"address":"山东","age":"12","name":"张三"}

需要jar包：json-lib-2.3-jdk15.jar