最近一个项目需要把报表的表格导入excel，在网上找了一些方法，比较研究了一下，记在这里，备忘。
表格例子如下：
<table id="tableExcel" width="100%" border="1" cellspacing="0" cellpadding="0"> <tr> <td colspan="5" align="center">html 表格导出道Excel</td> </tr> <tr> <td>列标题1</td> <td>列标题2</td> <td>类标题3</td> <td>列标题4</td> <td>列标题5</td> </tr> <tr> <td>aaa</td> <td>bbb</td> <td>ccc</td> <td>ddd</td> <td>eee</td> </tr> <tr> <td>AAA</td> <td>BBB</td> <td>CCC</td> <td>DDD</td> <td>EEE</td> </tr> <tr> <td>FFF</td> <td>GGG</td> <td>HHH</td> <td>III</td> <td>JJJ</td> </tr></table>
1、js的方法
A、将整个表格拷贝到EXCEL中
function method1(tableid) { var curTbl = document.getElementById(tableid); var oXL = new ActiveXObject("Excel.Application"); var oWB = oXL.Workbooks.Add(); var oSheet = oWB.ActiveSheet; var sel = document.body.createTextRange(); sel.moveToElementText(curTbl); sel.select(); sel.execCommand("Copy"); oSheet.Paste(); oXL.Visible = true;}
B、读取表格中每个单元到EXCEL中：
function method2(tableid){ var curTbl = document.getElementById(tableid); var oXL = new ActiveXObject("Excel.Application"); var oWB = oXL.Workbooks.Add(); var oSheet = oWB.ActiveSheet; var Lenr = curTbl.rows.length; for (i = 0; i < Lenr; i++) {var Lenc = curTbl.rows(i).cells.length; for (j = 0; j < Lenc; j++) { oSheet.Cells(i + 1, j + 1).value = curTbl.rows(i).cells(j).innerText; } } oXL.Visible = true;}
c、把表格输出到另一个页面，然后存成cvs格式
function getXlsFromTbl(inTblId, inWindow){ try { var allStr = ""; var curStr = ""; if (inTblId != null && inTblId != "" && inTblId != "null") { curStr = getTblData(inTblId, inWindow); } if (curStr != null) { allStr += curStr; } else { alert("你要导出的表不存在"); return; } var fileName = getExcelFileName(); doFileExport(fileName, allStr); } catch(e) { alert("导出发生异常:" + e.name + "->" + e.description + "!"); }}function getTblData(inTbl, inWindow) { var rows = 0; var tblDocument = document; if (!!inWindow && inWindow != "") { if (!document.all(inWindow)) { return null; } else { tblDocument = eval(inWindow).document; } } var curTbl = tblDocument.getElementById(inTbl); var outStr = ""; if (curTbl != null) { for (var j = 0; j < curTbl.rows.length; j++) { for (var i = 0; i < curTbl.rows[j].cells.length; i++) { if (i == 0 && rows > 0) { outStr += " \t"; rows -= 1; } outStr += curTbl.rows[j].cells[i].innerText + "\t"; if (curTbl.rows[j].cells[i].colSpan > 1) { for (var k = 0; k < curTbl.rows[j].cells[i].colSpan - 1; k++) { outStr += " \t"; } } if (i == 0) { if (rows == 0 && curTbl.rows[j].cells[i].rowSpan > 1) { rows = curTbl.rows[j].cells[i].rowSpan - 1; } } } outStr += "\r\n"; } } else { outStr = null; alert(inTbl + "不存在 !"); } return outStr;}function getExcelFileName() { var d = new Date(); var curYear = d.getYear(); var curMonth = "" + (d.getMonth() + 1); var curDate = "" + d.getDate(); var curHour = "" + d.getHours(); var curMinute = "" + d.getMinutes(); var curSecond = "" + d.getSeconds(); if (curMonth.length == 1) { curMonth = "0" + curMonth; } if (curDate.length == 1) { curDate = "0" + curDate; } if (curHour.length == 1) { curHour = "0" + curHour; } if (curMinute.length == 1) { curMinute = "0" + curMinute; } if (curSecond.length == 1) { curSecond = "0" + curSecond; } var fileName = "table" + "_" + curYear + curMonth + curDate + "_" + curHour + curMinute + curSecond + ".csv"; return fileName;}function doFileExport(inName, inStr) { var xlsWin = null; if (!!document.all("glbHideFrm")) { xlsWin = glbHideFrm; } else { var width = 6; var height = 4; var openPara = "left=" + (window.screen.width / 2 - width / 2) + ",top=" + (window.screen.height / 2 - height / 2) + ",scrollbars=no,width=" + width + ",height=" + height; xlsWin = window.open("", "_blank", openPara); } xlsWin.document.write(inStr); xlsWin.document.close(); xlsWin.document.execCommand('Saveas', true, inName); xlsWin.close();}总结：比较上面3种方法，感觉第一种方法比较完美一些，因为这种方法比较完整的输出表格的格式。但，第一和第二种方法都用了ActiveX 对象，对客户端的安全有要求，而且最大的问题还有一个，就是excel 对象无法关闭。第3中方法虽然没有用ActiveX 对象，但是用了弹出窗口输出， 如果禁止了弹出窗口则无法使用。
对于execl 对象无法关闭的问题，下面的方法是一个权宜方法：
function Cleanup() { window.clearInterval(idTmr); CollectGarbage(); }
调用方法：
idTmr = window.setInterval("Cleanup();",1);
2、Asp.net(c#)中的方法
这种方法其实类似上面的js的第3中方法(也可以在其他的web脚本来实现，比如asp中vbscript，或者php)，把表格用文件流的方式
输出为excel。实例代码如下：
public void OutPutExcel(string title) { Response.Clear(); Response.Buffer = true; Response.Charset = "utf-8"; Response.AddHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(title + ".xls")); Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8"); Response.ContentType = "application/ms-excel"; Page.EnableViewState = false; System.IO.StringWriter oStringWriter = new System.IO.StringWriter(); System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter); this.Page.RenderControl(oHtmlTextWriter); string temp = oStringWriter.ToString(); Response.Write(temp); Response.End(); }
这种方法的从本质上说并非标准的excel格式，不过把html格式的文件另存为excel的格式，然后用excel打开罢了。
3、利用ExceL Application或者MSOWC 或者ado.net
这种方法都是利用服务器的组件来时实现，要求服务端要安装excel，具体的代码可以看下面的链接：
http://www.cnblogs.com/pucumt/archive/2006/09/13/503120.html
http://support.microsoft.com/default.aspx?scid=kb;zh-cn;306023#top
我不提倡用这种方法，因为需要占用服务器的资源。
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