如何将JSON字符串数组转对象集合

String json ="json数组数据";
JSONArray res = JSON.getJSONArray(json);
//用json的方法toJavaList，参数放入想转的集合对象就可以了
List<MonthTaskRes> monthTaskRes = res.toJavaList(MonthTaskRes.class);

String s = JacksonUtils.getInstance().writeValueAsString(user);
System.out.println(“对象转化字符串：”+s)；
User user1 = JacksonUtils.getInstance().readValue(s, User.class);
System.out.println(user1 );

JSONArray array=JSONArray.fromObject(list);
String jsonString = array.toString();

JSONObject obj = JSONObject.fromObject(user);
Log4jInit.ysulogger.debug(obj.toString());

JSONArray json=JSONArray.fromObject(jsonString);//jsonString字符串数组
List<User> list =(List<User>) JSONArray .toCollection(json,User.class)；

JSONObject obj = JSONObject.fromObject(jsonString);/jsonString字符串
User user= (User)JSONObject.toBean(obj,User.class);