急急急啊!!

请问大家,我已经把数据库中得数据查询出来放在了我的一个jsp页面的表格中了.

现在我要点击一个按钮"导出表格内容到excel中",就能把这个表格中得内容导出到excel里面!!

如何实现啊?希望能有代码讲解!!谢谢!万分感谢!~

可以用js导出excel
JScript code

/**
 * 生成Excel文件并保存
 * @param {String} 要生成的数据所在的表单名称
 * @param {String} 要生成的数据所在的table名称
 */
function exportexcel(formName, tableName){
    var oXL = new ActiveXObject("Excel.Application");
    oXL.Visible = true;
    var oWB = oXL.Workbooks.Add();
    var oSheet = oWB.ActiveSheet;
    
    var div1 = document.all.item(formName);
    var table1 = div1.all.item(tableName);
    var table = new Array();
    
    var retArr = getTableRowsCols(table1);
    var rlen = retArr[0];
    var clen = retArr[1];
    
    var flagTable = new Array(rlen);
    for (var i = 0; i < rlen; i++) {
        flagTable[i] = new Array(clen);
        for (var j = 0; j < clen; j++) {
            flagTable[i][j] = 0;
        }
    }
    
    var rowBegin = 1, colBegin = 1; //导出的表格的起始位置
    var c1 = oSheet.Cells(rowBegin, colBegin);
    var c2 = oSheet.Cells(rlen + rowBegin - 1, clen + colBegin - 1);
    oSheet.Range(c1, c2).VerticalAlignment = -4108;
    oSheet.Range(c1, c2).HorizontalAlignment = -4108;
    
    exportTable(oSheet, flagTable, table1, rowBegin, colBegin);
    
    oSheet.Range(oSheet.Cells(rowBegin, colBegin), oSheet.Cells(rlen + rowBegin - 1, clen + colBegin - 1)).EntireColumn.AutoFit();
    oXL.UserControl = true;
    oXL.Quit();
}

/**
 * 返回当前表格的行数和列数
 * 被exportexcel调用
 * @param {Object} 表格对象
 * @param {Array} 数组retArr, retArr[0], 行数；retArr[1], 列数
 */
function getTableRowsCols(objTable){
    var rowCnt = 0, colCnt = 0;
    for (var i = 0; i < objTable.rows.length; i++) {
        var row = objTable.rows[i]; //当前行
        var rowRows = 1, rowCols = 0; //当前行的初始行数和列数
        for (var j = 0; j < row.cells.length; j++) {
            var cell = row.cells[j]; //当前单元格
            if (cell.firstChild != null && cell.firstChild.tagName == "TABLE") {
                var inRetArr = getTableRowsCols(cell.firstChild);
                rowCols += inRetArr[1];
                rowRows = rowRows < inRetArr[0] ? inRetArr[0] : rowRows;
            }
            else { //不是表格
                rowCols += parseInt(cell.colSpan);
                rowRows = rowRows < parseInt(cell.rowSpan) ? parseInt(cell.rowSpan) : rowRows;
            }
        }
        colCnt = colCnt < rowCols ? rowCols : colCnt;
        rowCnt += rowRows;
    }
    var retArr = new Array();
    retArr[0] = rowCnt;
    retArr[1] = colCnt;
    
    return retArr;
}

/**
 * 导出表格
 * 被exportexcel调用
 */
function exportTable(oSheet, flagTable, objTable, rowBegin, colBegin){
    var flagRow = 0, flagCol = 0; //跟踪当前的表示表中的相对位置
    for (var i = 0; i < objTable.rows.length; i++) {
        var row = objTable.rows[i]; //当前行
        flagCol = 0;
        var subTableRows = 1; //当前行若有表格，则记录其中最大的行数
        for (var j = 0; j < row.cells.length; j++) {
            while (flagTable[rowBegin - 1 + flagRow][colBegin - 1 + flagCol] == 1) {
                flagCol++;
            }
            var cell = row.cells[j]; //当前单元格
            if (cell.firstChild != null && cell.firstChild.tagName == "TABLE") {
                var retArrRows = getTableRowsCols(cell.firstChild)[0];
                subTableRows = subTableRows < retArrRows ? retArrRows : subTableRows;
                exportTable(oSheet, flagTable, cell.firstChild, rowBegin + flagRow, colBegin + flagCol);
            }
            else {
            
                oSheet.Cells(rowBegin + flagRow, colBegin + flagCol).Font.Bold = 1;
                
                var rs = parseInt(cell.rowSpan);
                var cs = parseInt(cell.colSpan);
                oSheet.Cells(rowBegin + flagRow, colBegin + flagCol).NumberFormatLocal = "@";
                oSheet.Cells(rowBegin + flagRow, colBegin + flagCol).Value = cell.innerText;
                oSheet.Range(oSheet.Cells(rowBegin + flagRow, colBegin + flagCol), oSheet.Cells(rowBegin + flagRow + rs - 1, colBegin + flagCol + cs - 1)).MergeCells = 1;
                
                //填写当前单元格在标志表格中的标志
                for (var k = 0; k < rs; k++) {
                    for (var l = 0; l < cs; l++) {
                        flagTable[rowBegin - 1 + flagRow + k][colBegin - 1 + flagCol + l] = 1;
                    }
                }
            }
            
            flagCol = flagCol + cs - 1; //加速标志表格的列的移动，因为当前表格已经标识了cs个标志单元                                    
        }
        flagRow += subTableRows;
    }
}

用的时候这样使用
<form name="resultForm" >
<table id="resultTable">
.......
</table>
</form>
<input type="button" value="导出excel" onclick="exportexcel('resultForm','resultTable');" />

要注意的地方
1.客户的机器要装有ms excel ，wps的不行
2.将此站点加入安全站点