本文介绍了如何将json转换为普通对象?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
字符串数组以JSON格式存储在al arraylist中.现在我想将该arraylist转换为普通对象.我该如何转换?
An array of strings is stored in al arraylist which is in JSON format. Now i want to Convert that arraylist into normal object. How do i convert it?
public class Json {
public static void main(String[] args) {
ArrayList al = new ArrayList();
al.add(1);
al.add("Lokesh");
al.add("Gupta");
al.add(Arrays.asList("ADMIN", "MANAGER"));
Gson gson = new Gson();
System.out.println(gson.toJson(al));
}}
推荐答案
使用属性创建对象,例如:-
Create an Object with your attributes,eg:-
public class User {
Integer id;
String firstName,
String lastName;
List<Role> roles;// Where roles is a list of another Object Role
//getter and setter methods
}
然后
public class Manager{
public static void main(String[] args) {
String json = "{'id':1,'firstName':'Deva','lastName':'Raj','roles':['ADMIN','MANAGER']}";
Gson gson = new Gson();
User user = gson.fromJson(json, User.class);
System.out.println(user);
}
}
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