类型：转载 责任编辑：asp.net 日期：2007/05/23
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正文内容：由于某个jsp页面要实现较长等待时间功能的时候，对于用户，此时ie中是空白页。
如何让处理过程中出现等待的提示，我把自己的解决思路奉献给大家。
创建一个等待页面，
包含两个层layer1,layer2.layer1出现等待提示，layer2 包含iframe,利用iframe调用你那个长时间的jsp。开始时layer2隐藏，layer1显示。
等jsp处理结束后，利用
<script language="javascript">
if(parent.layer3.style.display!="block")
{
parent.layer1.style.display="none";
parent.layer2.style.display="block";
}
把提示的哪个层隐藏，自己的层显示。
下面为我的等待页代码：
<%@ page contenttype="text/html; charset=gbk" %>
<html>
<head>
<title>
机动车统计
</title>
</head>
<style type="text/css">
<!--
body {
margin-left: 0px;
margin-top: 0px;
margin-right: 0px;
margin-bottom: 0px;
}
-->
</style>
<body bgcolor="#c0c0c0">
<%
string sbegindate=request.getparameter("startdate");
string senddate=request.getparameter("enddate");
string sbeginglbm=request.getparameter("startglbm");
string ischk=(string)request.getparameter("ischk");
string sprestatisticyear=(string)request.getparameter("prestatisticyear");
string sstatisticyear=(string)request.getparameter("statisticyear");
string sendglbm=request.getparameter("endglbm");
string strurl=request.getparameter("url");
string strtj = strurl + "?startdate=" + sbegindate+"&enddate="+ senddate + "&ischk="+ ischk +
"&prestatisticyear="+ sprestatisticyear+"&statisticyear="+sstatisticyear+"&startglbm="+sbeginglbm+"&endglbm="+sendglbm;
%>
<div style="position: absolute; width: 100%; height: 100%; z-index: 1" id="layer1">
<p align="center"> </p>
<p align="center"> </p>
<table align="center"><tr><td>
<div style="font-size:8pt;padding:2px;border:solid black 1px">
<span id="progress1"> </span>
<span id="progress2"> </span>
<span id="progress3"> </span>
<span id="progress4"> </span>
<span id="progress5"> </span>
<span id="progress6"> </span>
<span id="progress7"> </span>
<span id="progress8"> </span>
<span id="progress9"> </span>
</div>
</td></tr></table>
<script language="javascript">
var progressend = 9; // set to number of progress <span>s.
var progresscolor = blue; // set to progress bar color
var progressinterval = 1000; // set to time between updates (milli-seconds)
var progressat = progressend;
var progresstimer;
function progress_clear() {
for (var i = 1; i <= progressend; i++) document.getelementbyid(progress+i).style.backgroundcolor = transparent;
progressat = 0;
}
function progress_update() {
progressat++;
if (progressat > progressend) progress_clear();
else document.getelementbyid(progress+progressat).style.backgroundcolor = progresscolor;
progresstimer = settimeout(progress_update(),progressinterval);
}
function progress_stop() {
cleartimeout(progresstimer);
progress_clear();
}
progress_update(); // start progress bar
</script>
<p align="center"><b><font size="4" face="黑体">处理数据中，请稍后。。。。。。。</font></b></p>
</div>
<div style="position: absolute; width: 100%; height: 100%; z-index: 1" id="layer2">
<iframe name="i2" marginwidth="1" marginheight="1" height="100%" width="100%" src="<%=strtj%> ">
浏览器不支持嵌入式框架，或被配置为不显示嵌入式框架。</iframe></div>
<div style="position: absolute; width: 100%; height: 100%; z-index: 1" id="layer3">
<p align="center"> </p>
<p align="center"> </p>
<p align="center"> </p>
<p align="center"><b><font size="4" face="黑体" color="blue">处 理 数 据 出 错！</font></b></p>
<p align="center"><textarea rows="15" name="s1" cols="53"></textarea></p>
<p align="center"><input type="button" value=" 关 闭 " name="b3" onclick="window.close()"></p>
</div>
<script language="javascript">
layer2.style.display="none";
layer3.style.display="none";
</script>
</body>
</html>