import java.util.ArrayList;import java.util.HashMap;import net.sf.json.JSONArray;import net.sf.json.JSONObject;import org.json.*;import java.io.*;  public class CESHI{	    public String CESHI_()    {    	ArrayList lst=new ArrayList();    	    	HashMap map=new HashMap();      	    	map.put("苹果","G001");    	map.put("香蕉","G002");    	map.put("西瓜","G003");    	map.put("菠萝","G004");    	    	lst.add(map);     	    	return JSONArray.fromObject(lst).toString();    }    }

import net.sf.json.JSONArray;import net.sf.json.JSONObject;public class starts {	public static void main(String[] args) {  		  		JSONArray jsonArray=JSONArray.fromObject(字符串);				for(int i=0;i<jsonArray.size();i++)		{			JSONObject jsonObj=(JSONObject)jsonArray.get(i);			System.out.println(jsonObj.get(KEYNAME));		}		    }  }