jsp页面内容导出到Excel中 怎么做
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发布时间:2022-04-23 19:46
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懂视网
时间:2022-05-13 04:47
请大家帮个忙啊
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我使用jsp导出excel, 在jsp页面写的java代码把数据取出来,然后导出excel文件。
现在出现的问题是,如果数量少的时候还可以。但如果大量数据比如5万条记录的话,数据可以取到jsp页面上,但是页面就会一直卡住,无法导出excel,大家知道怎么解决吗
回复讨论(解决方案)
为什么非要在jsp上写java代码,很麻烦的。一般的做法是把取数据的条件提交到后台,然后从数据库里重新取一边,用POI操作Excel,生出完了,再导出来。
这事情应该交给数据库做
热心网友
时间:2022-05-13 01:55
java jsp 页面 通过js 导出table 的源代码
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<taglib uri="http://java.sun.com/jstl/core" prefix="c" />
<%@ page import="java.util.ArrayList"%>
<%
path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
String gonghao = "";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'table.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<script type="text/javascript">
var chu = (function()
{
var uri = 'data:application/vnd.ms-excel;base64,'
, template = '<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns="http://www.w3.org/TR/REC-html40"><head><!--[if gte mso 9]><xml><x:ExcelWorkbook><x:ExcelWorksheets><x:ExcelWorksheet><x:Name>{worksheet}</x:Name><x:WorksheetOptions><x:DisplayGridlines/></x:WorksheetOptions></x:ExcelWorksheet></x:ExcelWorksheets></x:ExcelWorkbook></xml><![endif]--></head><body><table>{table}</table></body></html>'
, base64 = function(s) { return window.btoa(unescape(encodeURIComponent(s))) }
, format = function(s, c) { return s.replace(/{(\w+)}/g, function(m, p) { return c[p]; }) }
return function(table, name){ if (!table.nodeType) table = document.getElementById(table)
var ctx = {worksheet: name || 'Worksheet', table: table.innerHTML}
window.location.href = uri + base64(format(template, ctx))
}
})()</script>
<style type="text/css">
<!--
#menu {
color: #00CCFF;
}
#mkoo {
background-image: url(bg.jpg);
background-repeat: no-repeat;
background-position: left top;
}
-->
</style>
</head>
<body background="023.jpg">
<div id="mkoo">
</div>
<form id="form1" runat="server">
<table id="excel" width="1000px" border="1" bgcolor="#0066CC">
<tr align="center">
<td bgcolor='#9999FF' scope='col' width="40px">
序号
</td>
<td bgcolor='#9999FF' scope='col' width="50px">
姓名
</td>
</tr>
</table>
</form>
<input align="left" name="button" type="button"
onclick="chu('excel')" value="导出数据" />
</body>
</html>
热心网友
时间:2022-05-13 03:13
jsp页面导出excel的话,刚好有做这个功能,可以参考如下代码:
function getExplorer() {
var explorer = window.navigator.userAgent;
// ie
if (explorer.indexOf("MSIE") >= 0 || (explorer.indexOf("Windows NT 6.1;") >= 0 && explorer.indexOf("Trident/7.0;") >= 0) ) {
alert("识别你是IE浏览器1111======");
return 'ie';
}
// firefox
else if (explorer.indexOf("Firefox") >= 0) {
return 'Firefox';
}
// Chrome
else if (explorer.indexOf("Chrome") >= 0) {
return 'Chrome';
}
// Opera
else if (explorer.indexOf("Opera") >= 0) {
return 'Opera';
}
// Safari
else if (explorer.indexOf("Safari") >= 0) {
return 'Safari';
}
}
//设置导出的excel的标题
var excelTitle ="表格数据";
function toOutPutExcel(tableid,title) {// 整个表格拷贝到EXCEL中
excelTitle =title;
if (getExplorer() == 'ie') {
var curTbl = document.getElementById(tableid);
var oXL = new ActiveXObject("Excel.Application");
// 创建AX对象excel
var oWB = oXL.Workbooks.Add();
// 获取workbook对象
var xlsheet = oWB.Worksheets(1);
// 激活当前sheet
var sel = document.body.createTextRange();
sel.moveToElementText(curTbl);
// 把表格中的内容移到TextRange中
sel.select;
// 全选TextRange中内容
sel.execCommand("Copy");
// 复制TextRange中内容
xlsheet.Paste();
// 粘贴到活动的EXCEL中
oXL.Visible = true;
// 设置excel可见属性
try {
var fname = oXL.Application.GetSaveAsFilename("Excel.xls",
"Excel Spreadsheets (*.xls), *.xls");
} catch (e) {
print("Nested catch caught " + e);
} finally {
oWB.SaveAs(fname);
oWB.Close(savechanges = false);
// xls.visible = false;
oXL.Quit();
oXL = null;
// 结束excel进程,退出完成
// window.setInterval("Cleanup();",1);
idTmr = window.setInterval("Cleanup();", 1);
}
} else {
tableToExcel(tableid);
}
}
function Cleanup() {
window.clearInterval(idTmr);
CollectGarbage();
}
var tableToExcel = (function() {
var uri = 'data:application/vnd.ms-excel;base64,', template = '<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns="http://www.w3.org/TR/REC-html40"><head><!--[if gte mso 9]><xml><x:ExcelWorkbook><x:ExcelWorksheets><x:ExcelWorksheet><x:Name>{worksheet}</x:Name><x:WorksheetOptions><x:DisplayGridlines/></x:WorksheetOptions></x:ExcelWorksheet></x:ExcelWorksheets></x:ExcelWorkbook></xml><![endif]--></head><body><table>{table}</table></body></html>', base64 = function(
s) {
return window.btoa(unescape(encodeURIComponent(s)))
}, format = function(s, c) {
return s.replace(/{(\w+)}/g, function(m, p) {
return c[p];
})
}
return function(table, name) {
if (!table.nodeType)
table = document.getElementById(table)
var ctx = {
worksheet : excelTitle || 'Worksheet',
table : table.innerHTML
}
//window.location.href = uri + base64(format(template, ctx))
var titleDate= new Date().Format("yyyy-MM-dd hh-mm-ss");
document.getElementById("dlink").href = uri + base64(format(template, ctx));
document.getElementById("dlink").download = excelTitle+titleDate+".xls";
document.getElementById("dlink").click();
}
})()