[转]JSONObject，JSONArray使用手册

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import net.sf.json.JSONArray;   

import net.sf.json.JSONObject;   

import java.util.*;   

/** 

 * 

 * @author derek 

 */

public class JavaTest {   

    public static void main(String[] args){     

       JSONObject obj=new JSONObject();   

       obj.put("derek","23");   

       obj.put("dad", "49");   

       obj.put("mom", "45");   

       System.out.println("通过构造器的方式创建的JSONObject对象："+obj);   

       Map<String,String> map=new LinkedHashMap<>();   

       map.put("derek","23");   

       map.put("dad", "49");   

       map.put("mom", "45");   

       System.out.println("通过fromObject方法将map对象转换为JSONObject对象："+JSONObject.fromObject(map));   

       JSONArray arr=new JSONArray();   

       arr.add(0,"derek");   

       arr.add(1,"dad");   

       arr.add(2,"mom");   

       System.out.println("通过构造器的方式创建的JSONArray："+arr);   

       ArrayList<String> list=new ArrayList<>();   

       list.add("derek");   

       list.add("dad");   

       list.add("mom");   

       System.out.println("通过fromObject方法将Arraylist对象转换为JSONArray对象："+JSONArray.fromObject(list));   

       System.out.println("将HashMap对象通过fromObject方法转换为JSONArray对象"+JSONArray.fromObject(map));   

       String str="{\"derek\":23,\"dad\":49,\"mom\":45}";   

       System.out.println("解析之后的JSON对象："+JSONObject.fromObject(str));   

       //遍历输出   

       Iterator<String> it=obj.keys();   

       while(it.hasNext()){   

           String key=it.next();   

           System.out.println(key+":"+obj.get(key));   

       }   

    }   

}