一个生成json的java类

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----------------------------------java类----------------------

package com.controller;

import java.util.ArrayList;

public class Json {

public static void main(String[] args) {
 Json j=new Json();
 j.reSet();
 j.setSuccess(true);
 j.addItem("id", "1");
 j.addItem("name", "zb");
 j.addItemOk();
 j.addItem("id", "2");
 j.addItem("name", "jim");
 j.addItemOk();
 String dd=j.ToString();
 System.out.println(dd);
 }

 public String singleInfo="";
 protected boolean _success=true;
 protected String _error="";
 protected ArrayList arrData=new ArrayList();
 protected ArrayList dataItem=new ArrayList();
 public String getError() {
 return _error;
 }
 public void setError(String error) {
 if(!error.equals(""))this._success=false;
 this._error = error;
 }
 public boolean getSuccess() {
 return _success;
 }
 public void setSuccess(boolean success) {
 if(success) this._error="";
 this._success = success;
 }

 public Json()
 {

 }

 public void reSet()
 {
 _success=true;
 _error="";
 singleInfo="";
 arrData.clear();
 dataItem.clear();
 }

 public void addItem(String name,String _value)
 {
 dataItem.add(name);
 dataItem.add(_value);
 }

 //一个数组添加完毕，一个新的数组开始
 public void addItemOk()
 {
 arrData.add(dataItem);
 dataItem=new ArrayList();
 }

 public String ToString()
 {
 StringBuilder sb=new StringBuilder();
 sb.append("km_popedom={");
 // sb.append("success:"+_success+",");
 // sb.append("error:/""+_error.replaceAll("/"","///"")+"/",");
 // sb.append("singleInfo:/""+singleInfo.replaceAll("/"","///"")+"/","+" ");
 String s[] = {"a","b","c"}
 for(int k = 0 ;k< s.length;k++)
 {
 sb.append(" "+s[k]+":["+" ");

 int ad=arrData.size();
 for(int i=0;i<ad;i++)
 {
 ArrayList arr=(ArrayList)(arrData.get(i));
 sb.append("{");
 int t=arr.size();
 for(int j=0;j<t;j+=2)
 {
 if(j==t) break;
 sb.append(arr.get(j).toString());
 sb.append(":");
 sb.append("/"");
 sb.append(arr.get(j+1).toString());
 sb.append("/"");
 if(j<t-2) sb.append(",");
 }
 sb.append("}");
 if(i<ad-1) sb.append(","+" ");
 }
 sb.append(" ],");
 }
 sb.append("}");
 return sb.toString();
 }

}

-------------------------------JSP------------------------

<%@ page language="java" import="java.util.*" pageEncoding="GBK"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>


 <title>My JSP 'cc.jsp' starting page</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">

</head>

<body>
 <%@page import="com.controller.*,
 java.util.List"%>
<%
 Json json=new Json();
 //UserService user = new UserService();
 // List list = user.getUserList();
 // Users users;
 json.reSet();
 json.setSuccess(true);
 // int j=list.size();
 for (int i=0; i<1; i++)
 {
 // users = (Users) list.get(i);
 json.addItem("edit","true");
 json.addItem("delete","false");
 json.addItem("add","true");
 json.addItem("find","false");
 json.addItemOk();
 }
 out.println(json.ToString());
%>
</body>
</html>