首先引入两份JS:copyhtmltoexcel.js以及 tableToExcel.js
/*
* 默认转换实现函数，如果需要其他功能，需自行扩展
* 参数：
* tableID : HTML中Table对象id属性值
* 详细用法参见以下 TableToExcel 对象定义
*/
function saveAsExcel(tableID){
var tb = new TableToExcel(tableID);
tb.setFontStyle("Courier New");
tb.setFontSize(10);
tb.setTableBorder(2);
tb.setColumnWidth(7);
tb.isLineWrap(false);
tb.isAutoFit(true);
tb.getExcelFile();
} /*
* 功能：HTML中Table对象转换为Excel通用对象.
* 作者：Jeva
* 时间：2006-08-09
* 参数：tableID HTML中Table对象的ID属性值
* 说明：
* 能适应复杂的HTML中Table对象的自动转换，能够自动根据行列扩展信息
* 合并Excel中的单元格，客户端需要安装有Excel
* 详细的属性、方法引用说明参见：Excel的Microsoft Excel Visual Basic参考
* 示范：
* var tb = new TableToExcel('demoTable');
* tb.setFontStyle("Courier New");
* tb.setFontSize(10); //推荐取值10
* tb.setFontColor(6); //一般情况不用设置
* tb.setBackGround(4); //一般情况不用设置
* tb.setTableBorder(2); //推荐取值2
* tb.setColumnWidth(10); //推荐取值10
* tb.isLineWrap(false);
* tb.isAutoFit(true);
*
* tb.getExcelFile();
* 如果设置了单元格自适应，则设置单元格宽度无效
* 版本：1.0
*/
function TableToExcel(tableID) {
this.tableBorder = -1; //边框类型，-1没有边框 可取1/2/3/4
this.backGround = 0; //背景颜色：白色 可取调色板中的颜色编号 1/2/3/4....
this.fontColor = 1; //字体颜色：黑色
this.fontSize = 10; //字体大小
this.fontStyle = "宋体"; //字体类型
this.rowHeight = -1; //行高
this.columnWidth = -1; //列宽
this.lineWrap = true; //是否自动换行
this.textAlign = -4108; //内容对齐方式 默认为居中
this.autoFit = false; //是否自适应宽度
this.tableID = tableID;
} TableToExcel.prototype.setTableBorder = function (excelBorder) {
this.tableBorder = excelBorder ;
}; TableToExcel.prototype.setBackGround = function (excelColor) {
this.backGround = excelColor;
}; TableToExcel.prototype.setFontColor = function (excelColor) {
this.fontColor = excelColor;
}; TableToExcel.prototype.setFontSize = function (excelFontSize) {
this.fontSize = excelFontSize;
}; TableToExcel.prototype.setFontStyle = function (excelFont) {
this.fontStyle = excelFont;
}; TableToExcel.prototype.setRowHeight = function (excelRowHeight) {
this.rowHeight = excelRowHeight;
}; TableToExcel.prototype.setColumnWidth = function (excelColumnWidth) {
this.columnWidth = excelColumnWidth;
}; TableToExcel.prototype.isLineWrap = function (lineWrap) {
if (lineWrap == false || lineWrap == true) {
this.lineWrap = lineWrap;
}
}; TableToExcel.prototype.setTextAlign = function (textAlign) {
this.textAlign = textAlign;
}; TableToExcel.prototype.isAutoFit = function(autoFit){
if(autoFit == true || autoFit == false)
this.autoFit = autoFit ;
} //文件转换主函数
TableToExcel.prototype.getExcelFile = function () {
var jXls, myWorkbook, myWorksheet, myHTMLTableCell, myExcelCell, myExcelCell2;
var myCellColSpan, myCellRowSpan; try {
jXls = new ActiveXObject('Excel.Application');
}
catch (e) {
alert("无法启动Excel!\n\n" + e.message +
"\n\n如果您确信您的电脑中已经安装了Excel，"+
"那么请调整IE的安全级别。\n\n具体操作：\n\n"+
"工具 → Internet选项 → 安全 → 自定义级别 → ActiveX控件和插件 \n\n" +
"→ 启用 : 对没有标记为安全的ActiveX控件进行初始化和脚本运行");
return false;
} jXls.Visible = true;
myWorkbook = jXls.Workbooks.Add();
jXls.DisplayAlerts = false;
myWorkbook.Worksheets(3).Delete();
myWorkbook.Worksheets(2).Delete();
jXls.DisplayAlerts = true;
myWorksheet = myWorkbook.ActiveSheet; var readRow = 0, readCol = 0;
var totalRow = 0, totalCol = 0;
var tabNum = 0; //设置行高、列宽
if(this.columnWidth != -1)
myWorksheet.Columns.ColumnWidth = this.columnWidth;
else
myWorksheet.Columns.ColumnWidth = 7;
if(this.rowHeight != -1)
myWorksheet.Rows.RowHeight = this.rowHeight ; //搜索需要转换的Table对象，获取对应行、列数
var obj = document.all.tags("table");
for (x = 0; x < obj.length; x++) {
if (obj[x].id == this.tableID) {
tabNum = x;
totalRow = obj[x].rows.length;
for (i = 0; i < obj[x].rows[0].cells.length; i++) {
myHTMLTableCell = obj[x].rows(0).cells(i);
myCellColSpan = myHTMLTableCell.colSpan;
totalCol = totalCol + myCellColSpan;
}
}
} //开始构件模拟表格
var excelTable = new Array();
for (i = 0; i <= totalRow; i++) {
excelTable[i] = new Array();
for (t = 0; t <= totalCol; t++) {
excelTable[i][t] = false;
}
} //开始转换表格
for (z = 0; z < obj[tabNum].rows.length; z++) {
readRow = z + 1;
readCol = 1;
for (c = 0; c < obj[tabNum].rows(z).cells.length; c++) {
myHTMLTableCell = obj[tabNum].rows(z).cells(c);
myCellColSpan = myHTMLTableCell.colSpan;
myCellRowSpan = myHTMLTableCell.rowSpan;
for (y = 1; y <= totalCol; y++) {
if (excelTable[readRow][y] == false) {
readCol = y;
break;
}
}
if (myCellColSpan * myCellRowSpan > 1) {
myExcelCell = myWorksheet.Cells(readRow, readCol);
myExcelCell2 = myWorksheet.Cells(readRow + myCellRowSpan - 1, readCol + myCellColSpan - 1);
myWorksheet.Range(myExcelCell, myExcelCell2).Merge();
myExcelCell.HorizontalAlignment = this.textAlign;
myExcelCell.Font.Size = this.fontSize;
myExcelCell.Font.Name = this.fontStyle;
myExcelCell.wrapText = this.lineWrap;
myExcelCell.Interior.ColorIndex = this.backGround;
myExcelCell.Font.ColorIndex = this.fontColor;
if(this.tableBorder != -1){
myWorksheet.Range(myExcelCell, myExcelCell2).Borders(1).Weight = this.tableBorder ;
myWorksheet.Range(myExcelCell, myExcelCell2).Borders(2).Weight = this.tableBorder ;
myWorksheet.Range(myExcelCell, myExcelCell2).Borders(3).Weight = this.tableBorder ;
myWorksheet.Range(myExcelCell, myExcelCell2).Borders(4).Weight = this.tableBorder ;
} myExcelCell.Value = myHTMLTableCell.innerText;
for (row = readRow; row <= myCellRowSpan + readRow - 1; row++) {
for (col = readCol; col <= myCellColSpan + readCol - 1; col++) {
excelTable[row][col] = true;
}
} readCol = readCol + myCellColSpan;
} else {
myExcelCell = myWorksheet.Cells(readRow, readCol);
myExcelCell.Value = myHTMLTableCell.innerText;
myExcelCell.HorizontalAlignment = this.textAlign;
myExcelCell.Font.Size = this.fontSize;
myExcelCell.Font.Name = this.fontStyle;
myExcelCell.wrapText = this.lineWrap;
myExcelCell.Interior.ColorIndex = this.backGround;
myExcelCell.Font.ColorIndex = this.fontColor;
if(this.tableBorder != -1){
myExcelCell.Borders(1).Weight = this.tableBorder ;
myExcelCell.Borders(2).Weight = this.tableBorder ;
myExcelCell.Borders(3).Weight = this.tableBorder ;
myExcelCell.Borders(4).Weight = this.tableBorder ;
}
excelTable[readRow][readCol] = true;
readCol = readCol + 1;
}
}
}
if(this.autoFit == true)
myWorksheet.Columns.AutoFit; jXls.UserControl = true;
jXls = null;
myWorkbook = null;
myWorksheet = null;
};
copyhtmltoexcel.js
//elTalbeOut 这个为导出内容的外层表格，主要是设置border之类的样式，elDiv则是整个导出的html部分
function onhtmlToExcel(elTableOut,elDiv){
try{
//设置导出前的数据，为导出后返回格式而设置
var elDivStrBak = elDiv.innerHTML;
//设置table的border=1，这样到excel中就有表格线 ps:感谢双面提醒
elTableOut.border=1;
//过滤elDiv内容
var elDivStr = elDiv.innerHTML;
elDivStr = replaceHtml(elDivStr,"<A",">");
elDivStr = replaceHtml(elDivStr,"</A",">");
elDiv.innerHTML=elDivStr; var oRangeRef = document.body.createTextRange();
oRangeRef.moveToElementText( elDiv );
oRangeRef.execCommand("Copy"); //返回格式变换以前的内容
elDiv.innerHTML = elDivStrBak;
//内容数据可能很大，所以赋空
elDivStrBak = "";
elDivStr = ""; var oXL = new ActiveXObject("Excel.Application")
var oWB = oXL.Workbooks.Add ;
var oSheet = oWB.ActiveSheet ;
oSheet.Paste();
oSheet.Cells.NumberFormatLocal = "@";
oSheet.Columns("D:D").Select
oXL.Selection.ColumnWidth = 20
oXL.Visible = true;
oSheet = null;
oWB = null;
appExcel = null;
}catch(e){
alert(e.description)
}
} function replaceHtml(replacedStr,repStr,endStr){
var replacedStrF = "";
var replacedStrB = "";
var repStrIndex = replacedStr.indexOf(repStr);
while(repStrIndex != -1){
replacedStrF = replacedStr.substring(0,repStrIndex);
replacedStrB = replacedStr.substring(repStrIndex,replacedStr.length);
replacedStrB = replacedStrB.substring(replacedStrB.indexOf(endStr)+1,replacedStrB.length);
replacedStr = replacedStrF + replacedStrB;
repStrIndex = replacedStr.indexOf(repStr);
}
return replacedStr;
}
在JSP页面中写JS方法//生成Excel
function onTableToExcel(){
var elTableOut = document.getElementById("elTableOut");
var elDiv = document.getElementById("elDiv");
onhtmlToExcel(elTableOut,elDiv);
}
注意事项：使用JS导出excel需要设置IE的active。注意最佳的是IE8浏览器。至于在java后台实现excel还没去研究，希望各位大神指教。