<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href=" <%=basePath%>">
<title>My JSP 'index.jsp' starting page </title>
<script type="text/javascript" language="javascript">
var request= null;
function getInfo(){
if(window.XMLHttpRequest){
request=new XMLHttpRequest();
}
else if(window.ActiveXObject){
var activeName=["MSXML2.XMLHTTP","Microsoft.XMLHTTP"];
for(var i=0;i <2;i++){
try{
request=new ActiveXObject(activeName[i]);
break;
}catch(e){
}
}
}
request.onreadystatechange=callback;
var url="servlet/AjaxServlet";
request.open("GET",url,true);
request.send(null);
}
function callback(){
以下是一段JavsScript脚本，但运行时总会产生 “Microsoft JScript 运行时错误: 'null' 为空或不是对象”异常，大家帮看一下。
<form id="form1" runat="server">
< ......
