FastJson实现序列化

FastJson源码

public static final Object parse(String text); // 把JSON文本parse为JSONObject或者JSONArray 
public static final JSONObject parseObject(String text)； // 把JSON文本parse成JSONObject    
public static final <T> T parseObject(String text, Class<T> clazz); // 把JSON文本parse为JavaBean 
public static final JSONArray parseArray(String text); // 把JSON文本parse成JSONArray 
public static final <T> List<T> parseArray(String text, Class<T> clazz); //把JSON文本parse成JavaBean集合 
public static final String toJSONString(Object object); // 将JavaBean序列化为JSON文本 
public static final String toJSONString(Object object, boolean prettyFormat); // 将JavaBean序列化为带格式的JSON文本 
public static final Object toJSON(Object javaObject); //将JavaBean转换为JSONObject或者JSONArray。

JSONArray : 相当于List
JSONObject: 相当于Map

FastJson测试

User类：

public class User {
	private String username;
	private String password;
	public User(){}
	public User(String username,String password){
		this.username = username;
		this.password = password;
	}
	public String getUsername() {
		return username;
	}
	public void setUsername(String username) {
		this.username = username;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
    @Override
	public String toString() {
		return "User [username=" + username + ", password=" + password + "]";
	}
}

Users类：

import java.util.ArrayList;
import java.util.List;

public class Users{
	private String name;  
    private List<User> users = new ArrayList<User>();
    public Users(){}
    public Users(String name,List<User> users){
    	this.name = name;
    	this.users = users;
    }
	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;
	}
	@Override
	public String toString() {
		return "Users [name=" + name + ", users=" + users + "]";
	}  
}

测试类：

import java.util.ArrayList;
import java.util.List;
import org.junit.Test;
import com.alibaba.fastjson.JSON;
public class TestFastJosn {
	/**
	 * java对象转 json字符串 
	 */
	@Test
	public void objectTOJson(){
		//简单java类转json字符串
		User user = new User("test", "123456");
		String UserJson = JSON.toJSONString(user);
		System.out.println("简单java类转json字符串:"+UserJson);
		
		//List