Ajax传输对象，集合或数组。

时间：2021-12-07 05:58:37

传输单个对象时：

servlet页面

package com.itnba.maya.a;

import java.io.IOException;

import javax.servlet.ServletException;

import javax.servlet.annotation.WebServlet;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

/**

 * Servlet implementation class A

 */

@WebServlet("/A")

public class A extends HttpServlet {

    private static final long serialVersionUID = 1L;

    /**

     * @see HttpServlet#HttpServlet()

     */

    public A() {

        super();

        // TODO Auto-generated constructor stub

    }

    /**

     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)

     */

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        request.setCharacterEncoding("utf-8");

        response.setCharacterEncoding("utf-8");

        //模拟从数据库查出

        Dog a=new Dog();

        a.setName("小黄");

        a.setAge(5);

        a.setZl("哈士奇");

        //放到XML文件中

        response.getWriter().append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");

        response.getWriter().append("<gen>");

        response.getWriter().append("<name>"+ a.getName()+"</name>");

        response.getWriter().append("<age>"+ a.getAge()+"</age>");

        response.getWriter().append("<zl>"+ a.getZl()+"</zl>");

        response.getWriter().append("</gen>");

    }

    /**

     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)

     */

    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        // TODO Auto-generated method stub

        doGet(request, response);

    }

}

Ajax传输对象，集合或数组。

jsp页面中

<%@ page language="java" contentType="text/html; charset=utf-8"

    pageEncoding="utf-8"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8">

<title>Insert title here</title>

<script type="text/javascript" src="js/jquery-1.11.1.min.js"></script>

<script type="text/javascript">

$(document).ready(function(){

    $("#k").click(function(){

        $.ajax({

            url:"A",//跳转的servlet

            data:{},//key：要传输的数据

            type:"POST",

            dataType:"xml",

            success:function(httpdata){

                /* 解析XML中的数据 */

                var n=$(httpdata).find("name").text()

                var a=$(httpdata).find("age").text()

                var z=$(httpdata).find("zl").text()

                $("#x").append("<li>"+n+"</li>");

                $("#x").append("<li>"+a+"</li>");

                $("#x").append("<li>"+z+"</li>");

            }

        })

    });

});

</script>

</head>

<body>

<span id="k">查看</span>

<h1>

<ul id="x">

</ul>

</h1>

</body>

</html>

效果如下

Ajax传输对象，集合或数组。

传输集合或者数组时

servlet页面

package com.itnba.maya.a;

import java.io.IOException;

import java.util.ArrayList;

import javax.servlet.ServletException;

import javax.servlet.annotation.WebServlet;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

/**

 * Servlet implementation class B

 */

@WebServlet("/B")

public class B extends HttpServlet {

    private static final long serialVersionUID = 1L;

    /**

     * @see HttpServlet#HttpServlet()

     */

    public B() {

        super();

        // TODO Auto-generated constructor stub

    }

    /**

     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)

     */

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        request.setCharacterEncoding("utf-8");

        response.setCharacterEncoding("utf-8");

        //模拟从数据库中查出

        Dog a1=new Dog();

        a1.setName("小黄");

        a1.setAge(5);

        a1.setZl("哈士奇");

        Dog a2=new Dog();

        a2.setName("中黄");

        a2.setAge(6);

        a2.setZl("泰迪");

        Dog a3=new Dog();

        a3.setName("大黄");

        a3.setAge(7);

        a3.setZl("京巴");

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

        list.add(a1);

        list.add(a2);

        list.add(a3);

        //放到XML文件中

        response.getWriter().append("<?xml version='1.0'?>");

        response.getWriter().append("<gen>");

        for(Dog d :list){

            response.getWriter().append("<dog name='"+d.getName()+"'>");

            //response.getWriter().append("<name>"+d.getName()+"</name>");

            response.getWriter().append("<age>"+d.getAge()+"</age>");

            response.getWriter().append("<zl>"+d.getZl()+"</zl>");

            response.getWriter().append("</dog>");

        }

        response.getWriter().append("</gen>");

    }

    /**

     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)

     */

    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        // TODO Auto-generated method stub

        doGet(request, response);

    }

}

Ajax传输对象，集合或数组。

jsp页面

<%@ page language="java" contentType="text/html; charset=utf-8"

    pageEncoding="utf-8"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8">

<title>Insert title here</title>

<script type="text/javascript" src="js/jquery-1.11.1.min.js"></script>

<script type="text/javascript">

$(document).ready(function(){

    $("#k").click(function(){

        $.ajax({

            url:"B",

            data:{},

            type:"POST",

            dataType:"xml",

            success:function(httpdata){

                var d=$(httpdata).find("dog");/* 返回的是个数组 */

                for(var i=0;i<d.length;i++){

                    var n=$(d).eq(i).attr("name");

                    var a=$(d).eq(i).find("age").text();

                    var z=$(d).eq(i).find("zl").text();

                    var tr="<tr>"

                    tr+="<td>"+n+"</td>"

                    tr+="<td>"+a+"</td>"

                    tr+="<td>"+z+"</td>"

                    tr +="</tr>"

                    $("#x").append(tr)

                }

            }

        });

    });

});

</script>

</head>

<body>

<span id="k">查看</span>

<h1>

<table width="100%" id="x">

</table>

</h1>

</body>

</html>

效果如下

Ajax传输对象，集合或数组。

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