注:前端的js转换json,我没有记录,大家可以百度
1.java对象列表转换为json对象数组,并将其转变为字符串
JSONArray array = JSONArray.fromObject(list);
String jsonstr = array.toString();
2.json字符串转换为java对象数组
JSONArray json = JSONArray.fromObject(usersJsonString);
List<User> users= (List<User>)JSONArray.toCollection(json, User.class);
3.java对象转换为json对象,并将其转化为字符串
JSONObject object = JSONObject.fromObject(user);
System.out.println(object.toString());
4.json字符串转换为java对象
JSONObject jsonobject = JSONObject.fromObject(jsonString); User user= (User)JSONObject.toBean(object,User.class);