要实现页面中的table导出成Excel格式，如果用jxl的API，未免太麻烦了些，这里我介绍一下我们项目中使用的简单的导出。
首先，介绍一下原理，Excel可以打开html文件这个大家应该都知道吧？（这个你都不知道？呵呵
以下是查询jsp页面部分代码：
<script>
function saveResult()
{
var idx=document.all.userid.selectedIndex;
if (eval(document.resultFrame.resTbl)==null)
{
alert("请先查询后再保存！");
return false;
}
var file="日告警查询_"+document.all.datetime.value
+"_"+document.all.userid.options[idx].text;
document.all.name.value=file+".xls";
document.all.txt.value="<style>body,table {font-family: \"宋体\";font-size: 9pt}</style>"+document.resultFrame.resTbl.innerHTML;
warnForm.action="/downloadResult.do";
warnForm.target="saveFrm";
warnForm.submit();
document.all.name.value=file;
}
</script>
<html:form action="/warnDayQuery.do" target="resultFrame" >
<input type="hidden" name="name" value=""/>
<input type="hidden" name="txt" value=""/>
</html:form>
...
<!--
仅仅提供保存功能的iframe
//-->
<iframe name="saveFrm" src="" frameborder="0" scrolling="no" width="0" height="0">
</iframe>
...
<!--
查询结果
//-->
<iframe name="resultFrame" src="" frameborder="0" scrolling="yes" width="100%" height="500">
</iframe>
下面是查询结果的jsp部分代码：
//关键就是这个id号，可以代表要导出的table
<span id="resTbl">
<logic:notPresent name="dayResult" scope="session">
查询失败!
</logic:notPresent>
<table width="100%" height="10%" border="1" align="center" cellpadding="1" cellspacing="0" bgcolor="#EEECF2" bordercolor="#A3B2CC">
<logic:present name="dayResult" scope="session">
...
下面是作为中转的下载jsp服务代码：
<%@ page
language="java"
contentType="text/html; charset=GBK"
import="java.io.*,java.net.URL,java.util.*"
%>
<%
String file =null;
StringBuffer sb=null;
for (Enumeration e = request.getParameterNames(); e.hasMoreElements(); ) {
String name = (String) e.nextElement();
//System.out.println(" >>Name: "+ name);
//System.out.println(" >>>Parameter: "+ request.getParameter(name));
if(name.equals("name"))
file=request.getParameter(name);
if(name.equals("txt"))
sb=new StringBuffer(request.getParameter(name));
}
try {
file = new String(file.getBytes("ISO-8859-1"), "gb2312");
}
catch (UnsupportedEncodingException e) {
out.println("文件名解析失败！");
return;
}
String extName = file.substring(file.lastIndexOf("."));
String contentType;
if (extName == null || extName.equals("")) contentType = "";
else if (extName.equalsIgnoreCase(".chm")) contentType = "application/msword";
else if (extName.equalsIgnoreCase(".doc")) contentType = "application/msword";
else if (extName.equalsIgnoreCase(".xls")) contentType = "application/vnd.ms-excel";
else if (extName.equalsIgnoreCase(".ppt")) contentType = "application/vnd.ms-powerpoint";
else if (extName.equalsIgnoreCase(".txt")) contentType = "text/plain";
else contentType = "application/octet-stream";
// "inline" or "attachment" (default)
/*String mode = request.getParameter("mode");
recommendedName = request.getParameter("recommendedName");
if (mode == null || mode.length() == 0) mode = "attachment";
*/
String recommendedName = new String(file.getBytes(),"iso_8859_1");
response.setContentType(contentType);
response.setHeader("Content-Disposition", "attachment; filename=" + recommendedName + "\"");
response.resetBuffer();
ServletOutputStream sos = response.getOutputStream();
/*
String s = null;
while ((s=br.readLine())!=null) {
sos.print(s);
}
*/
sos.write(sb.toString().getBytes("ISO-8859-1"));
sos.flush();
sos.close();
%>
你也可以做成servlet形式，怎么样，这样的Excel导出是不是很简单阿？
