fastjson 基本使用方法

这里介绍 fastjson 用于生成和解析 JSON 数据的简单示例

1、Java代码

public class User {
private Long id;
private String name;

public Long getId() { return id; }
public void setId(Long id) { this.id = id; }

public String getName() { return name; }
public void setName(String name) { this.name = name; }
}

2、Java代码

public class Group {
private Long id;
private String name;
private List<User> users = new ArrayList<User>();

public Long getId() { return id; }
public void setId(Long id) { this.id = id; }

public String getName() { return name; }
public void setName(String name) { this.name = name; }

public List<User> getUsers() { return users; }
public void setUsers(List<User> users) { this.users = users; }
}

3、Java代码

import com.alibaba.fastjson.JSON;

Group group = new Group();
group.setId(0L);
group.setName("admin");

User guestUser = new User();
guestUser.setId(2L);
guestUser.setName("guest");

User rootUser = new User();
rootUser.setId(3L);
rootUser.setName("root");

group.getUsers().add(guestUser);
group.getUsers().add(rootUser);

String jsonString = JSON.toJSONString(group);

System.out.println(jsonString);

4、输出结果

{
"name":"admin",
"id":0,"users":[
{"name":"guest","id":2},
{"name":"root","id":3}
]
}

5、解析

Group group2 = JSON.parseObject(jsonString, Group.class);

原文：http://www.oschina.net/code/snippet_12_3495