参考原文https://blog.csdn.net/a249130/article/details/81302123

项目结构：

JsonServlet接口:

package com.demo;

import java.io.IOException;

import java.io.PrintWriter;

import java.util.ArrayList;

import java.util.List;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.json.JSONException;

import org.json.JSONObject;

public class JsonServlet extends HttpServlet{

private static final long serialVersionUID = 1L;

@Override

protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

String page = req.getParameter("page");

// 将数据添加到数组

List newslist = new ArrayList();

if (page == null || page.equals("0")) {

newslist.add("1");

newslist.add("2");

newslist.add("3");

newslist.add("4");

newslist.add("5");

newslist.add("6");

}else {

newslist.add("01");

newslist.add("001");

newslist.add("0001");

newslist.add("00001");

newslist.add("000001");

newslist.add("00000001");

}

// 调用json.jar工具封装json

JSONObject object = new JSONObject();

for(String str : newslist){

try {

object.put(str, str+":"+page);

}catch (JSONException e) {

e.printStackTrace();

}

}

String json = object.toString();

// 输出到界面

System.out.println(json);

resp.setContentType("text/plain");

resp.setCharacterEncoding("gb2312");

PrintWriter out = new PrintWriter(resp.getOutputStream());

out.print(json);

out.flush();

// 更多Json转换使用请看JsonTest类

}

@Override

protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

this.doGet(req, resp);

}

}

index.jsp：

pageEncoding="utf-8"%>

Insert title here

web.xml:

JsonTest

index.jsp

JsonServlet

com.demo.JsonServlet

JsonServlet

/getJson

tomcat中启动访问

————————————————

版权声明：本文为CSDN博主「景恩」的原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接及本声明。

原文链接：https://blog.csdn.net/niejingen/article/details/102742841