如何用jquery 将 datagrid中数据导出到excel?

Question

需要用到些什么插件？有例子更好 谢谢

Answer 1

一个插件，将jquery数据生成excel的xml内容的字符串。下面是插件代码

 <script>
        /**
        Jquery easyui datagrid js导出excel
        修改自extgrid导出excel
        * allows for downloading of grid data (store) directly into excel
        * Method: extracts data of gridPanel store, uses columnModel to construct XML excel document,
        * converts to Base64, then loads everything into a data URL link.
        *
        * @author Animal <extjs support team>
        *
        */
        $.extend($.fn.datagrid.methods, {
            getExcelXml: function (jq, param) {
                var worksheet = this.createWorksheet(jq, param);
                //alert($(jq).datagrid('getColumnFields'));
                var totalWidth = 0;
                var cfs = $(jq).datagrid('getColumnFields');
                for (var i = 1; i < cfs.length; i++) {
                    totalWidth += $(jq).datagrid('getColumnOption', cfs[i]).width;
                }
                //var totalWidth = this.getColumnModel().getTotalWidth(includeHidden);
                return '<?xml version="1.0" encoding="utf-8"?>' +//xml申明有问题，以修正，注意是utf-8编码，如果是gb2312，需要修改动态页文件的写入编码
            '<ss:Workbook xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns:o="urn:schemas-microsoft-com:office:office">' +
            '<o:DocumentProperties><o:Title>' + param.title + '</o:Title></o:DocumentProperties>' +
            '<ss:ExcelWorkbook>' +
            '<ss:WindowHeight>' + worksheet.height + '</ss:WindowHeight>' +
            '<ss:WindowWidth>' + worksheet.width + '</ss:WindowWidth>' +
            '<ss:ProtectStructure>False</ss:ProtectStructure>' +
            '<ss:ProtectWindows>False</ss:ProtectWindows>' +
            '</ss:ExcelWorkbook>' +
            '<ss:Styles>' +
            '<ss:Style ss:ID="Default">' +
            '<ss:Alignment ss:Vertical="Top"  />' +
            '<ss:Font ss:FontName="arial" ss:Size="10" />' +
            '<ss:Borders>' +
            '<ss:Border  ss:Weight="1" ss:LineStyle="Continuous" ss:Position="Top" />' +
            '<ss:Border  ss:Weight="1" ss:LineStyle="Continuous" ss:Position="Bottom" />' +
            '<ss:Border  ss:Weight="1" ss:LineStyle="Continuous" ss:Position="Left" />' +
            '<ss:Border ss:Weight="1" ss:LineStyle="Continuous" ss:Position="Right" />' +
            '</ss:Borders>' +
            '<ss:Interior />' +
            '<ss:NumberFormat />' +
            '<ss:Protection />' +
            '</ss:Style>' +
            '<ss:Style ss:ID="title">' +
            '<ss:Borders />' +
            '<ss:Font />' +
            '<ss:Alignment  ss:Vertical="Center" ss:Horizontal="Center" />' +
            '<ss:NumberFormat ss:Format="@" />' +
            '</ss:Style>' +
            '<ss:Style ss:ID="headercell">' +
            '<ss:Font ss:Bold="1" ss:Size="10" />' +
            '<ss:Alignment  ss:Horizontal="Center" />' +
            '<ss:Interior ss:Pattern="Solid"  />' +
            '</ss:Style>' +
            '<ss:Style ss:ID="even">' +
            '<ss:Interior ss:Pattern="Solid"  />' +
            '</ss:Style>' +
            '<ss:Style ss:Parent="even" ss:ID="evendate">' +
            '<ss:NumberFormat ss:Format="yyyy-mm-dd" />' +
            '</ss:Style>' +
            '<ss:Style ss:Parent="even" ss:ID="evenint">' +
            '<ss:NumberFormat ss:Format="0" />' +
            '</ss:Style>' +
            '<ss:Style ss:Parent="even" ss:ID="evenfloat">' +
            '<ss:NumberFormat ss:Format="0.00" />' +
            '</ss:Style>' +
            '<ss:Style ss:ID="odd">' +
            '<ss:Interior ss:Pattern="Solid"  />' +
            '</ss:Style>' +
            '<ss:Style ss:Parent="odd" ss:ID="odddate">' +
            '<ss:NumberFormat ss:Format="yyyy-mm-dd" />' +
            '</ss:Style>' +
            '<ss:Style ss:Parent="odd" ss:ID="oddint">' +
            '<ss:NumberFormat ss:Format="0" />' +
            '</ss:Style>' +
            '<ss:Style ss:Parent="odd" ss:ID="oddfloat">' +
            '<ss:NumberFormat ss:Format="0.00" />' +
            '</ss:Style>' +
            '</ss:Styles>' +
            worksheet.xml +
            '</ss:Workbook>';
            },
            createWorksheet: function (jq, param) {
                // Calculate cell data types and extra class names which affect formatting
                var cellType = [];
                var cellTypeClass = [];
                //var cm = this.getColumnModel();
                var totalWidthInPixels = 0;
                var colXml = '';
                var headerXml = '';
                var visibleColumnCountReduction = 0;
                var cfs = $(jq).datagrid('getColumnFields');
                var colCount = cfs.length;
                for (var i = 1; i < colCount; i++) {
                    if (cfs[i] != '') {
                        var w = $(jq).datagrid('getColumnOption', cfs[i]).width;
                        totalWidthInPixels += w;
                        if (cfs[i] === "") {
                            cellType.push("None");
                            cellTypeClass.push("");
                            ++visibleColumnCountReduction;
                        }
                        else {
                            colXml += '<ss:Column ss:AutoFitWidth="1" ss:Width="130" />';
                            headerXml += '<ss:Cell ss:StyleID="headercell">' +
                        '<ss:Data ss:Type="String">' + $(jq).datagrid('getColumnOption', cfs[i]).title + '</ss:Data>' +
                        '<ss:NamedCell ss:Name="Print_Titles" /></ss:Cell>';
                            cellType.push("String");
                            cellTypeClass.push("");
                        }
                    }
                }
                var visibleColumnCount = cellType.length - visibleColumnCountReduction;
                var result = {
                    height: 9000,
                    width: Math.floor(totalWidthInPixels * 30) + 50
                };
                var rows = $(jq).datagrid('getRows');
                // Generate worksheet header details.
                var t = '<ss:Worksheet ss:Name="' + param.title + '">' +
            '<ss:Names>' +
            '<ss:NamedRange ss:Name="Print_Titles" ss:RefersTo="=\'' + param.title + '\'!R1:R2" />' +
            '</ss:Names>' +
            '<ss:Table x:FullRows="1" x:FullColumns="1"' +
            ' ss:ExpandedColumnCount="' + (visibleColumnCount + 2) +
            '" ss:ExpandedRowCount="' + (rows.length + 2) + '">' +
            colXml +
            '<ss:Row ss:AutoFitHeight="1">' +
            headerXml +
            '</ss:Row>';
                // Generate the data rows from the data in the Store
                //for (var i = 0, it = this.store.data.items, l = it.length; i < l; i++) {
                for (var i = 0, it = rows, l = it.length; i < l; i++) {
                    t += '<ss:Row>';
                    var cellClass = (i & 1) ? 'odd' : 'even';
                    r = it[i];
                    var k = 0;
                    for (var j = 1; j < colCount; j++) {
                        //if ((cm.getDataIndex(j) != '')
                        if (cfs[j] != '') {
                            //var v = r[cm.getDataIndex(j)];
                            var v = r[cfs[j]];
                            if (cellType[k] !== "None") {
                                t += '<ss:Cell ss:StyleID="' + cellClass + cellTypeClass[k] + '"><ss:Data ss:Type="' + cellType[k] + '">';
                                if (cellType[k] == 'DateTime') {
                                    t += v.format('Y-m-d');
                                } else {
                                    t += v;
                                }
                                t += '</ss:Data></ss:Cell>';
                            }
                            k++;
                        }
                    }
                    t += '</ss:Row>';
                }
                result.xml = t + '</ss:Table>' +
            '<x:WorksheetOptions>' +
            '<x:PageSetup>' +
            '<x:Layout x:CenterHorizontal="1" x:Orientation="Landscape" />' +
            '<x:Footer x:Data="Page &amp;P of &amp;N" x:Margin="0.5" />' +
            '<x:PageMargins x:Top="0.5" x:Right="0.5" x:Left="0.5" x:Bottom="0.8" />' +
            '</x:PageSetup>' +
            '<x:FitToPage />' +
            '<x:Print>' +
            '<x:PrintErrors>Blank</x:PrintErrors>' +
            '<x:FitWidth>1</x:FitWidth>' +
            '<x:FitHeight>32767</x:FitHeight>' +
            '<x:ValidPrinterInfo />' +
            '<x:VerticalResolution>600</x:VerticalResolution>' +
            '</x:Print>' +
            '<x:Selected />' +
            '<x:DoNotDisplayGridlines />' +
            '<x:ProtectObjects>False</x:ProtectObjects>' +
            '<x:ProtectScenarios>False</x:ProtectScenarios>' +
            '</x:WorksheetOptions>' +
            '</ss:Worksheet>';
                return result;
            }
        });
    </script>

使用方法

  function Save_Excel() {//导出Excel文件
            //getExcelXML有一个JSON对象的配置，配置项看了下只有title配置，为excel文档的标题
            var data = $('#dg').datagrid('getExcelXml', { title: 'datagrid import to excel' }); //获取datagrid数据对应的excel需要的xml格式的内容
            //用ajax发动到动态页动态写入xls文件中
            var url = 'datagrid-to-excel.ashx'; //如果为asp注意修改后缀
            $.ajax({ url: url, data: { data: data }, type: 'POST', dataType: 'text',
                success: function (fn) {
                    alert('导出excel成功！');
                    window.location = fn; //执行下载操作
                },
                error: function (xhr) {
                    alert('动态页有问题\nstatus：' + xhr.status + '\nresponseText：' + xhr.responseText)
                }
            });
            return false;
        }