js通过拼接table导出Excel,但数据行数有5万多行，一点击下载就出现网络错误，数据量少时正常下载代码如下：
<script>
var idTmr;
function getExplorer() {
var explorer = window.navigator.userAgent ;
//ie
if (explorer.indexOf("MSIE") >= 0) {
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';
}
}
function toExcel(tableid) {
if(getExplorer()=='ie')
{
var curTbl = document.getElementById(tableid);
var oXL = new ActiveXObject("Excel.Application");
var oWB = oXL.Workbooks.Add();
var xlsheet = oWB.Worksheets(1);
var sel = document.body.createTextRange();
sel.moveToElementText(curTbl);
sel.select();
sel.execCommand("Copy");
xlsheet.Paste();
oXL.Visible = true;
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);
oXL.Quit();
oXL = null;
idTmr = window.setInterval("Cleanup();", 1);
}
}
else
{
tableToExcel(tableid,'name', '项目分期报表.xls')
}
}
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]-->' +
'<style type="text/css">\n' +
' #table thead{width:100%;z-index:5;}\n' +
' #table td{overflow: hidden;text-overflow: ellipsis;white-space: nowrap;table-layout: fixed;padding-right: 0;}\n' +
' #table .project_title{background-color: #88e1ff;font-weight: bold;}\n' +
' #table .batch_title {font-weight: bold}\n' +
' #table .not_end{color: red;}\n' +
' #table tbody tr>td{text-align: left;padding-left: 5px;}'+
' .not_charge{color: blue}\n' +
' .charge{color: green}\n' +
' .pay_month{color: purple}\n' +
' </style>'+
'</head><body><table id="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, filename) {
if (!table.nodeType) table = document.getElementById(table)
var ctx = { worksheet: name || 'Worksheet', table: table.innerHTML }
document.getElementById("dlink").href = uri + base64(format(template, ctx));
document.getElementById("dlink").download = filename;
document.getElementById("dlink").click();
}
})()
</script>
请问各位大神我该怎么写才能让这个excel可以下载下来。
1 回答
有只小跳蛙
TA贡献1824条经验 获得超8个赞
因为浏览器URL有长度限制. 你这种方法是将 excel数据转换成 base64. 数据量大的时候长度超过浏览器GET 限制. 部分被阻断了. 就自然识别不出来这个excel.
具体解决办法
使用blob对象.
let blob = new Blob([format(template, ctx]);
document.getElementById("dlink").href = URL.createObjectURL(blob)- 1 回答
- 0 关注
- 1630 浏览
添加回答
举报
0/150
提交
取消