Java JSON 之 Map 转 JSON 字符串

http://www.verejava.com/?id=16998617072749

下载依赖 jar 包   

json.jar 




package com.json9;

import java.util.HashMap;
import java.util.Map;

import org.json.JSONObject;

public class Test
{
    public static void main(String[] args)
    {
        /*
         Map<String,String> map=new HashMap<String,String>();
        Map 对象存入 用户名,密码,电话号码
         */
        
        Map<String,String> map=new HashMap<String,String>();
        //Map 对象存入 用户名,密码,电话号码
        map.put("username", "liyang");
        map.put("pwd", "111111");
        map.put("telephone", "152232323");
        
        //Map 转成  JSONObject 字符串
        JSONObject jsonObj=new JSONObject(map);
        System.out.println(jsonObj.toString());
    }
}






package com.json10;

import java.util.HashMap;
import java.util.Map;

import org.json.JSONObject;

public class Test
{
    public static void main(String[] args)
    {
        /*
         Map<String,Object> map=new HashMap<String,Object>();
        Map 对象存入 用户名,密码,年龄
         */
        
        Map<String,Object> map=new HashMap<String,Object>();
        //Map 对象存入 用户名,密码,年龄
        map.put("username", "admin");
        map.put("pwd", "22");
        map.put("age", 20);
        
        JSONObject jsonObj=new JSONObject(map);
        System.out.println(jsonObj.toString());
    }
}





package com.json11;

import java.util.HashMap;
import java.util.Map;

import org.json.JSONObject;

import com.json7.House;

public class Test
{
    public static void main(String[] args)
    {
        /*
         Map<String,Object> map=new HashMap<String,Object>();
        Map 对象存入 姓名,年龄, House 对象
         */
        
        Map<String,Object> map=new HashMap<String,Object>();
        
        //Map 对象存入 姓名,年龄, House 对象
        map.put("name", "李俊");
        map.put("age", 30);
        map.put("house", new House(1,"理会","3室2厅",5500,false));
        
        JSONObject jsonObj=new JSONObject(map);
        System.out.println(jsonObj.toString());
    }
}







package com.json7;

public class House
{
    //编号, 房东,房屋描述,房屋价格,是否出租
    private int id;
    private String owner;
    private String description;
    private double price;
    private boolean isRent;
    public House(int id, String owner, String description, double price,
            boolean isRent)
    {
        super();
        this.id = id;
        this.owner = owner;
        this.description = description;
        this.price = price;
        this.isRent = isRent;
    }
    public int getId()
    {
        return id;
    }
    public void setId(int id)
    {
        this.id = id;
    }
    public String getOwner()
    {
        return owner;
    }
    public void setOwner(String owner)
    {
        this.owner = owner;
    }
    public String getDescription()
    {
        return description;
    }
    public void setDescription(String description)
    {
        this.description = description;
    }
    public double getPrice()
    {
        return price;
    }
    public void setPrice(double price)
    {
        this.price = price;
    }
    public boolean isRent()
    {
        return isRent;
    }
    public void setRent(boolean isRent)
    {
        this.isRent = isRent;
    }
    
    
}





package com.json12;

import java.util.HashMap;
import java.util.Map;

import org.json.JSONObject;

import com.json7.House;

public class Test
{
    public static void main(String[] args)
    {
        /*
         Map<String,Object> map=new HashMap<String,Object>();
        Map 对象存入 姓名,年龄, House 对象,颜色数组
         */
        
        Map<String,Object> map=new HashMap<String,Object>();
        //Map 对象存入 姓名,年龄, House 对象,颜色数组
        map.put("name", "王涛");
        map.put("age", 40);
        map.put("house", new House(2,"等均","1室1厅",3000,false));
        map.put("color", new String[]{"红色","蓝色","绿色"});
        
        JSONObject jsonObj=new JSONObject(map);
        System.out.println(jsonObj.toString());
    }
}

http://www.verejava.com/?id=16998617072749