【json】JsonObject / JsonArray

package cn.tzp.dao;

import net.sf.json.JSONArray;
import net.sf.json.JSONObject;

public class JSONObjectSample {

//创建JSONObject对象
private static JSONObject createJSONObject(){

JSONObject jsonObject = new JSONObject();
jsonObject.put("username","huangwuyi");
jsonObject.put("sex", "男");
jsonObject.put("QQ", "999999999");
jsonObject.put("Min.score", new Integer(99));
jsonObject.put("nickname", "梦中心境");
return jsonObject;
}
public static void main(String[] args) {
JSONObject jsonObject = JSONObjectSample.createJSONObject();
//输出jsonobject对象
System.out.println("jsonObject==>"+jsonObject);

//判读输出对象的类型
boolean isArray = jsonObject.isArray();
boolean isEmpty = jsonObject.isEmpty();
boolean isNullObject = jsonObject.isNullObject();
System.out.println("isArray:"+isArray+" isEmpty:"+isEmpty+" isNullObject:"+isNullObject);

//添加属性
jsonObject.element("address", "福建省厦门市");
System.out.println("添加属性后的对象==>"+jsonObject);

//返回一个JSONArray对象
JSONArray jsonArray = new JSONArray();
jsonArray.add(0, "this is a jsonArray value");
jsonArray.add(1,"another jsonArray value");
jsonObject.element("jsonArray", jsonArray);
JSONArray array = jsonObject.getJSONArray("jsonArray");
System.out.println("返回一个JSONArray对象："+array);
//添加JSONArray后的值
//        {"username":"huangwuyi","sex":"男","QQ":"999999999","Min.score":99,"nickname":"梦中心境","address":"福建省厦门市","jsonArray":["this is a jsonArray value","another jsonArray value"]}
System.out.println("结果="+jsonObject);

//根据key返回一个字符串
String username = jsonObject.getString("username");
System.out.println("username==>"+username);

//把字符转换为 JSONObject
String temp=jsonObject.toString();

JSONObject object = JSONObject.fromObject(temp);
//转换后根据Key返回值
System.out.println("qq="+object.get("QQ"));

}

}