后台导出EXCEL文档

导出这里有两个一个是直接数据库查到数据后导出，一个是到页面点击下载导出

一
1.到数据库查询需要打印的数据，改为DataSet类型传入下面的方法

2.这个自动生成后地址为：我的文档

   #region DataSetToExcel
        public static bool DataSetToExcel(DataSet dataSet, bool isShowExcle)
        {
            try
            {
                System.Data.DataTable dataTable = dataSet.Tables[0];
                int rowNumber = dataTable.Rows.Count;//条数
                int columnNumber = dataTable.Columns.Count;//列数
                int colIndex = 0;

                if (rowNumber == 0)
                {
                    LogHelper.WriteErrorLog(string.Format("DataSetToExcel：rowNumber:{0},DateTime:{1},dataSet:{2}", rowNumber, DateTime.Now, dataSet));
                    return false;
                }

                //建立Excel对象 
                Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
                Microsoft.Office.Interop.Excel.Workbook workbook = excel.Workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);
                Microsoft.Office.Interop.Excel.Worksheet worksheet = workbook.Worksheets[1] as Microsoft.Office.Interop.Excel.Worksheet;
                excel.Visible = isShowExcle;
                Microsoft.Office.Interop.Excel.Range range;

                //生成字段名称 
                foreach (DataColumn col in dataTable.Columns)
                {
                    colIndex++;
                    excel.Cells[1, colIndex] = col.ColumnName;
                }

                object[,] objData = new object[rowNumber, columnNumber];
                //遍历
                for(int i=0;i<rowNumber;i++)
                {
                    for(int j=0;j<columnNumber;j++)
                    {
                        objData[i, j] = dataTable.Rows[i][j];
                    }
                }
                // 写入Excel 
                range = worksheet.Range[excel.Cells[2, 1], excel.Cells[rowNumber + 1, columnNumber]];
                //range.NumberFormat = "@";//设置单元格为文本格式 
                range.Value2 = objData;
                worksheet.Range[excel.Cells[2, 1], excel.Cells[rowNumber + 1, 1]].NumberFormat = "yyyy-m-d h:mm";

                return true;
            }
            catch (Exception ex)
            {
                LogHelper.WriteErrorLog(string.Format("DataSetToExcel：ex:{0},DateTime:{1}", ex, DateTime.Now));

                return false;
            }
        }

        #endregion

二

(一).导出满足条件的数据

1.操作页面创建方法实现后台操作，页面方法如下

   <ul class="ui-tabs-nav ui-helper-reset ui-helper-clearfix ui-widget-header ui-corner-all">
        <li class="ui-state-default ui-corner-top ui-tabs-selected ui-state-active"><a href="#tabs-1">XX记录</a></li>
        <li><label onclick="javascript:excelsA()" style="color:azure;" id="label1">&emsp;导出数据EXCEL</label></li>
    </ul>
    <script type="text/javascript">
        var count = 0;
        function labelA() {
            alert("请稍等数据量较大,正在努力导出!");
        }

        function excelsA() {
            if (count == 0) {
                alert("请等待，注:生成中请勿重复点击！");
                count++;
                $.ajax({
                    type: "POST",
                    url: "GetExcel",
                    contentType: "application/json; charset=utf-8",
                    data: "{Type:'EG',Time1:'" + document.getElementById("BetTime1").value + "',Time2:'" + document.getElementById("BetTime2").value + "'}",
                    success: function (msg) {
                        count = 0;
                        if (msg.indexOf("该时间段:") >= 0)
                        { alert(msg); }
                        else
                        { excels(msg); }
                    }
                });
            } else {
                $("#label1").click(labelA);//防止导出时多次操作
            }
        }


        var timer;
        function getExplorer() {//获取浏览器
            var explorer = window.navigator.userAgent;
            if (explorer.indexOf("MSIE") >= 0 || (explorer.indexOf("Windows NT 6.1;") >= 0 && explorer.indexOf("Trident/7.0;") >= 0)) {
                return 'ie';
            } else if (explorer.indexOf("Firefox") >= 0) {
                return 'Firefox';
            } else if (explorer.indexOf("Chrome") >= 0) {
                return 'Chrome';
            } else if (explorer.indexOf("Opera") >= 0) {
                return 'Opera';
            } else if (explorer.indexOf("Safari") >= 0) {
                return 'Safari';
            }
        }

        function excels(table) {
            if (getExplorer() == 'ie') {
                var curTbl = document.getElementById(table);
                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 filename = oXL.Application.GetSaveAsFilename("Excel.xls", "Excel Spreadsheets (*.xls), *.xls");
                } catch (e) {
                    window.print("Nested catch caught " + e);
                } finally {
                    oWB.SaveAs(filename);
                    oWB.Close(savechanges = false);
                    oXL.Quit();
                    oXL = null;//结束excel进程，退出完成
                    timer = window.setInterval("Cleanup();", 1);
                }
            } else {
                tableToExcel(table);
            }
        }

        function Cleanup() {
            window.clearInterval(timer);
            CollectGarbage();//CollectGarbage,是IE的一个特有属性,用于释放内存的
        }
        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) {
                debugger;
                var ctx = { worksheet: name || 'Worksheet', table: table };
                window.location.href = uri + base64(format(template, ctx))
            }
        })();

    </script>

2.后台操作为

到数据库查询数据，拼接为HTML代码，也可以加上一些样式

(二).导出当前页面的数据

  <ul class="ui-tabs-nav ui-helper-reset ui-helper-clearfix ui-widget-header ui-corner-all">
        <li class="ui-state-default ui-corner-top ui-tabs-selected ui-state-active"><a href="#tabs-1">XX记录</a></li>

<li><input id="Button1" type="button" value="导出数据EXCEL" onclick="javascript:excels('DataTable')" /></li>
    </ul>

    <script type="text/javascript">
        var timer;
        function getExplorer() {//获取浏览器
            var explorer = window.navigator.userAgent;
            if (explorer.indexOf("MSIE") >= 0 || (explorer.indexOf("Windows NT 6.1;") >= 0 && explorer.indexOf("Trident/7.0;") >= 0)) {
                return 'ie';
            } else if (explorer.indexOf("Firefox") >= 0) {
                return 'Firefox';
            } else if (explorer.indexOf("Chrome") >= 0) {
                return 'Chrome';
            } else if (explorer.indexOf("Opera") >= 0) {
                return 'Opera';
            } else if (explorer.indexOf("Safari") >= 0) {
                return 'Safari';
            }
        }
        function excels(table) {
            if (confirm("导出当前页数据")) {
                if (getExplorer() == 'ie') {
                    var curTbl = document.getElementById(table);
                    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 filename = oXL.Application.GetSaveAsFilename("Excel.xls", "Excel Spreadsheets (*.xls), *.xls");
                    } catch (e) {
                        window.print("Nested catch caught " + e);
                    } finally {
                        oWB.SaveAs(filename);
                        oWB.Close(savechanges = false);
                        oXL.Quit();
                        oXL = null;//结束excel进程，退出完成
                        timer = window.setInterval("Cleanup();", 1);
                    }
                } else {
                    tableToExcel("DataTable");
                }
            } else {
                alert("导出原数据");
                alert("该功能请稍后");
            } 
        }
        function Cleanup() {
            window.clearInterval(timer);
            CollectGarbage();//CollectGarbage,是IE的一个特有属性,用于释放内存的
        }
        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) {
                debugger;
                if (!table.nodeType) table = document.getElementById(table);
                var ctx = { worksheet: name || 'Worksheet', table: table.innerHTML };
                window.location.href = uri + base64(format(template, ctx))
            }
        })();
    </script>