導出excel方法：
exportResult:function(){
var fileName = this.title;
var vExportContent = this.getExcelXml();
//alert(vExportContent);
if (Ext.isIE6 || Ext.isIE7 || Ext.isIE8 || Ext.isSafari
|| Ext.isSafari2 || Ext.isSafari3) {
var fd = Ext.get('frmDummy');
if (!fd) {
fd = Ext.DomHelper.append(Ext.getBody(), {
tag : 'form',
method : 'post',
id : 'frmDummy',
action : '../exportexcel.jsp',
target : '_blank',
name : 'frmDummy',
cls : 'x-hidden',
cn : [{
tag : 'input',
name : 'fileName',
id : 'fileName',
type : 'hidden'
}, {
tag : 'input',
name : 'exportContent',
id : 'exportContent',
type : 'hidden'
}]
}, true);
}
fd.child('#fileName').set({
value : fileName
});
fd.child('#exportContent').set({
value : vExportContent
});
fd.dom.submit();
} else {
document.location = 'data:application/vnd.ms-excel;base64,'
+ Base64.encode(vExportContent);
}
},
getExcelXml : function(includeHidden) {
var worksheet = this.createWorksheet(includeHidden);
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>'
+ this.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:WrapText="1" />'
+ '<ss:Font ss:FontName="arial" ss:Size="10" />'
+ '<ss:Borders>'
+ '<ss:Border ss:Color="#e4e4e4" ss:Weight="1" ss:LineStyle="Continuous" ss:Position="Top" />'
+ '<ss:Border ss:Color="#e4e4e4" ss:Weight="1" ss:LineStyle="Continuous" ss:Position="Bottom" />'
+ '<ss:Border ss:Color="#e4e4e4" ss:Weight="1" ss:LineStyle="Continuous" ss:Position="Left" />'
+ '<ss:Border ss:Color="#e4e4e4" 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:WrapText="1" 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:WrapText="1" ss:Horizontal="Center" />'
+ '<ss:Interior ss:Pattern="Solid" ss:Color="#A3C9F1" />'
+ '</ss:Style>' + '<ss:Style ss:ID="even">'
+ '<ss:Interior ss:Pattern="Solid" ss:Color="#CCFFFF" />'
+ '</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:Color="#CCCCFF" />'
+ '</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(includeHidden) {
// 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 colCount = cm.getColumnCount();
for (var i = 0; i < colCount; i++) {
if ((cm.getDataIndex(i) != '')
&& (includeHidden || !cm.isHidden(i))) {
var w = cm.getColumnWidth(i)
totalWidthInPixels += w;
if (cm.getColumnHeader(i) === "") {
cellType.push("None");
cellTypeClass.push("");
++visibleColumnCountReduction;
} else {
colXml += '<ss:Column ss:AutoFitWidth="1" ss:Width="' + w
+ '" />';
headerXml += '<ss:Cell ss:StyleID="headercell">'
+ '<ss:Data ss:Type="String">'
+ cm.getColumnHeader(i)
+ '</ss:Data>'
+ '<ss:NamedCell ss:Name="Print_Titles" /></ss:Cell>';
var fld = this.store.recordType.prototype.fields.get(cm
.getDataIndex(i));
switch (fld.type) {
case "int" :
cellType.push("Number");
cellTypeClass.push("int");
break;
case "float" :
cellType.push("Number");
cellTypeClass.push("float");
break;
case "bool" :
case "boolean" :
cellType.push("String");
cellTypeClass.push("");
break;
case "date" :
cellType.push("DateTime");
cellTypeClass.push("date");
break;
default :
cellType.push("String");
cellTypeClass.push("");
break;
}
}
}
}
var visibleColumnCount = cellType.length - visibleColumnCountReduction;
var result = {
height : 9000,
width : Math.floor(totalWidthInPixels * 30) + 50
};
// Generate worksheet header details.
var t = '<ss:Worksheet ss:Name="' + this.title + '">' + '<ss:Names>'
+ '<ss:NamedRange ss:Name="Print_Titles" ss:RefersTo="=\''
+ this.title + '\'!R1:R2" />' + '</ss:Names>'
+ '<ss:Table x:FullRows="1" x:FullColumns="1"'
+ ' ss:ExpandedColumnCount="' + (visibleColumnCount + 2)
+ '" ss:ExpandedRowCount="' + (this.store.getCount() + 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++) {
t += '<ss:Row>';
var cellClass = (i & 1) ? 'odd' : 'even';
r = it[i].data;
var k = 0;
for (var j = 0; j < colCount; j++) {
if ((cm.getDataIndex(j) != '')
&& (includeHidden || !cm.isHidden(j))) {
var v = r[cm.getDataIndex(j)];
var rd = cm.getRenderer(j);
if (cellType[k] !== "None") {
t += '<ss:Cell ss:StyleID="' + cellClass
+ cellTypeClass[k] + '"><ss:Data ss:Type="'
+ cellType[k] + '">';
if(v==null){
t+='';
}
else if (cellType[k] == 'DateTime') {
t += v.format('Y-m-d');
} else {
t += rd(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;
}
跳轉的jsp頁面：
<%@page import="java.net.URLEncoder"%>
<%
response.reset();
//request.setCharacterEncoding("UTF-8");
String fileName = request.getParameter("fileName");
fileName = java.net.URLEncoder.encode(fileName, "UTF-8");
//System.out.println(fileName);
response.setHeader("Content-Type", "application/force-download");
response.setHeader("Content-Type",
"application/vnd.ms-excel;charset=UTF-8");
response.setHeader("Content-Disposition", "attachment;filename="
+ fileName + ".xls");
out.print(request.getParameter("exportContent"));
%>
錯誤信息：request.getParameter("fileName") 取到的為空值，getParameter("exportContent")也為空值，跳轉到jsp頁面之前是有值的
是不是內容大小超過你jsp最大限制了？或者服務器的最大上傳大小限制。如asp默認是200KB。tomcat默認好像是2M
tomcat傳輸大小受限制
