ajax实例01

ajax 实例
项目结构图：
 

各文件内容如下
Ajax.js：
 
var xhr; 
 
function createXHR(){ 
 var xhr; 
 try{ 
  xhr=new ActiveXObject("Msxml2.XMLHTTP"); 
  return xhr; 
 }catch(e){ 
  try{ 
   xhr=new ActiveXObject("Microsoft.XMLHTTP"); 
   return xhr; 
  }catch(ee){ 
   xhr=false; 
  } 
 } 
 if(!xhr&&typeof XMLHttpRequest!=&＃39;undefined&＃39;){ 
  xhr=new XMLHttpRequest(); 
  return xhr; 
 } 
 return xhr; 
} 
 
AjaxServlet01.java:
 
package com.ajax.hw.web; 
 
import java.io.IOException; 
import java.io.PrintWriter; 
 
import javax.servlet.ServletException; 
import javax.servlet.http.HttpServlet; 
import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 
 
/** 
 * Servlet implementation class AjaxServlet01 
 */
public class AjaxServlet01 extends HttpServlet 
{ 
    private static final long serialVersiOnUID= 1L; 
 
    public AjaxServlet01() 
    { 
        super(); 
    } 
 
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException 
    { 
        System.out.println("request!"); 
        response.setContentType("text/html; charset=UTF-8"); 
        PrintWriter out = response.getWriter(); 
        out.print("来自servlet的信息!"); 
    } 
 
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, 
            IOException 
    { 
        doGet(request, response); 
    } 
 
} 
test01.jsp:
 
<%@ page language="java" cOntentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
http://www.w3.org/TR/html4/loose.dtd">










 


 
web.xml:
 

http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
  ajax00001
 
    index.html
    index.htm
    index.jsp
    default.html
    default.htm
    default.jsp
 
 
   
    AjaxServlet01
    AjaxServlet01
    com.ajax.hw.web.AjaxServlet01
 
 
    AjaxServlet01
    /AjaxServlet01
 

作者“whuang”