easyui中前臺利用js匯出顯示的datagrid
阿新 • • 發佈:2019-01-02
注意:本方法是通過js獲取頁面的datagird的資料xml轉換後提交到後臺,暫只能匯出頁面datagrid顯示的資料,有資料分頁的暫不支援全部匯出(可以改進,有時間研究)
第一步:新增datagrid 的擴充套件屬性(可以寫在通用js檔案中)
/** Jquery easyui datagrid js匯出excel 修改自extgrid匯出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申明有問題,以修正,注意是utf-8編碼,如果是gb2312,需要修改動態頁檔案的寫入編碼 '<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 &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>'; return result; } });
第二步:在頁面js中生成datagrid的xml資料,並通過ajax提交到後臺處理(下面例項的後臺是mvc的,回撥成功後生成下載連結)
//getExcelXML有一個JSON物件的配置,配置項看了下只有title配置,為excel文件的標題 var data = $('#grid').datagrid('getExcelXml', { title: 'datagrid import to excel' }); //獲取datagrid資料對應的excel需要的xml格式的內容 //用ajax發動到動態頁動態寫入xls檔案中 var url = virpath + '/Article/datagrid_to_excel'; //如果為asp注意修改後綴 $.ajax({ url: url, data: { Data:data }, type: 'POST', dataType: 'text', success: function (fn) { $("#Dlg-Export_xiazai").html("<a class='easyui-linkbutton' iconCls='icon-ok' href='" + fn + "' target='_blank' style='border:1px solid black;padding:10px 10px 10px 10px ' >點選下載</a>"); }, error: function (xhr) { $("#Dlg-Export_xiazai").html('動態頁有問題\nstatus:' + xhr.status + '\nresponseText:' + xhr.responseText) } });
第三步:後臺程式,這個非常簡單。
//獲取前臺post提交的資料 string data = Request["Data"]; //定義生成檔案的目錄,獲取絕對地址 string pathToFiles = Server.MapPath("/UploadFiles"); //定義生成檔案的名稱 string fn = DateTime.Now.ToString("yyyyMMddHHmmssfff") + ".xls"; //組合成檔案的路徑 string path = @"" + pathToFiles+ "\\"+fn; //判斷是否已經存在檔案 if (!System.IO.File.Exists(path)) { //新建檔案,並寫入資料 System.IO.File.WriteAllText(path, data, Encoding.UTF8); } else { //檔案已存在,新增寫入資料 System.IO.File.AppendAllText(path, data, Encoding.UTF8);//如果是gb2312的xml申明,第三個編碼引數修改為Encoding.GetEncoding(936) } return Content("/UploadFiles/" + fn);//返回檔名提供下載