Jsp中table导出到excel

源码如下：exp.js
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 exportToExcel(tableid ) {//整个表格拷贝到EXCEL中
    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: name || 'Worksheet', table: table.innerHTML}
            window.location.href = uri + base64(format(template, ctx))
        }
    })()