EasyUI----DataGrid 导出 Excel
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最近做的安防项目有个功能，需要把DataGrid中的数据导出，下面通过代码一步一步的介绍;
首先在js中写一个扩展类，主要的功能是把DataGrid中的数据转换成Excel的XML格式
'''将datagrid中的数据转换成Excel的XML格式'''$.extend($.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 = 0; 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">' + '<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>'; }, '''创建worksheet，将dataGrid的标题放到里面''' 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 = 0; 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>'; //将DataGrid的数据循环加入到Excel中 //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 = 0; 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 &P of &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>'; //alert(result.xml); return result; }});然后再新建一个一般处理程序
public void ProcessRequest(HttpContext context) { '''给要下载的Excel赋一个初始的文件名''' string fn = DateTime.Now.ToString("yyyyMMddHHmmssfff") + ".xls"; '''获取前台传回来的值，应该是一个XML文件的内容'''' string data = context.Request.Form["data"]; '''将相对路径转换为绝对路径，数据，编码方式''' File.WriteAllText(context.Server.MapPath(fn), data, Encoding.UTF8);'''如果是gb2312的xml申明，第三个编码参数修改为Encoding.GetEncoding(936)''' context.Response.Write(fn);'''返回文件名提供下载''' }其中File.WriteAllText的主要作用
最后在写js事件
'''状态数据导出Excel'''function StateExporterExcel() {'''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 = $('#dgState').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 = 'DataGridToExcel.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！');''' '''执行下载操作''' window.location = fn; }, error: function (xhr) { alert('动态页有问题\nstatus：' + xhr.status + '\nresponseText：' + xhr.responseText) } }); return false;}导出的弹出窗口，看着还可以
导出来的数据是这样的
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