Ajax传输对象，集合或数组。
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); } }
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
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); } }
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
