Gson的fromJson()方法把json字符创转为实体

直接上代码：

1.先看Person实体类

 import lombok.Data;

 @Data
 public class Person {

     private String name;

     private int age;
 }

2.User类

 import lombok.Data;

 import java.util.List;

 @Data
 public class User {

     private List<Person> personList;
 }

3.运行例子

 public static void main(String[] args) {

         String json = "{'name':'wyz','age':25}";

         Person person = new Gson().fromJson(json, Person.class);

         System.out.println(person);

         String json1 = "{'personList':[{'name':'wyz','age':25},{'name':'wyz1','age':26}]}";

         User user = new Gson().fromJson(json1, User.class);

         System.out.println(user);

         String json2 = "[{'name':'wyz','age':25},{'name':'wyz1','age':26}]";

         List<Person> personList = new Gson().fromJson(json2, new TypeToken<List<Person>>() {
         }.getType());

         System.out.println(personList);
     }

4.演示结果