导出grid panel 数据到Excel
前段时间有个项目需要做导出Excel的功能，后来在网上找到一些文章，但都是1.0版本的，自己改成了2.0版本
前台脚本:
/*
||fomrat: 导出格式(excel, csv, xml)
||grid:要导出的Grid Panel
*/
function doExportData(format, grid) {
var vExportContent = getGridXml(grid, false);
if (!Ext.fly('frmDummy')) {
var frm = document.createElement('form');
frm.id = 'frmDummy';
frm.name = 'frmDummy';
frm.className = 'x-hidden';
document.body.appendChild(frm);
}
Ext.Ajax.useDefaultHeader = false;
Ext.Ajax.request({
url: '/Handlers/ExportData.ashx',
method: 'POST',
form: Ext.fly('frmDummy'),
callback: function (o, s, r) {
alert(r.responseText);
},
isUpload: true,
params: { exportXml: Ext.util.Format.htmlEncode(vExportContent), exportFormat: format }
});
}
/*
||includeHidden: 包含隐藏列
||grid:要导出的Grid Panel
*/
function getGridXml(grid, includeHidden) {
var cellType = [];
var cellTypeClass = [];
var columns = grid.columns;
var totalWidthInPixels = 0;
var headerXml = '';
var dataXml = '';
var visibleColumnCountReduction = 0;
var colCount = columns.length;
headerXml = "";
for (var i = 0; i < colCount; i++) {
var col = columns[i];
if ((col.dataIndex != '')
&& (includeHidden || !col.isHidden())) {
var w = col.getWidth();
totalWidthInPixels += w;
if (col.text === "") {
cellType.push("None");
cellTypeClass.push("");
++visibleColumnCountReduction;
}
else {
var dataType = '';
var fld = null;
var fields = grid.store.model.getFields();
for (var k = 0, len = fields.length; k < len; k++) {
if (col.dataIndex == fields[k].name) {
fld = fields[k];
break;
}
}
if (fld != null) {
switch (fld.type.type) {
case "int":
dataType = "Integer";
cellType.push("Number");
cellTypeClass.push("int");
break;
case "float":
dataType = "Float";
cellType.push("Number");
cellTypeClass.push("float");
break;
case "bool":
case "boolean":
dataType = "String";
cellType.push("String");
cellTypeClass.push("");
break;
case "date":
dataType = "DateTime";
cellType.push("DateTime");
cellTypeClass.push("date");
break;
default:
dataType = "String";
cellType.push("String");
cellTypeClass.push("");
break;
}
}
else {
dataType = "String";
cellType.push("String");
cellTypeClass.push("");
}
headerXml += ' ";
var visibleColumnCount = cellType.length - visibleColumnCountReduction;
dataXml = '';
// Generate the data rows from the data in the Store
for (var i = 0, it = grid.store.data.items, l = it.length; i < l; i++) {
dataXml += '';
var cellClass = (i & 1) ? 'odd' : 'even';
r = it[i].data;
var k = 0;
for (var j = 0; j < colCount; j++) {
var col = columns[j];
if ((col.dataIndex != '')
&& (includeHidden || !col.isHidden())) {
var v = r[col.dataIndex];
if (v == null)
v = "";
if (cellType[k] !== "None") {
dataXml += '<' + escapeXmlName(col.dataIndex) + '>';
if (cellType[k] == 'DateTime') {
dataXml += v.format('Y-m-d H:i:s');
} else {
dataXml += escapeXml(v);
}
dataXml += '';
}
k++;
}
}
dataXml += ' ';
}
dataXml += ' ';
var resultXml = '' + headerXml + dataXml + ' ';
return resultXml;
}后台ashx:
///
/// Summary description for ExportExcel
///
public class ExportData : IHttpHandler
{
public void ProcessRequest(HttpContext context)
{
context.Response.AddHeader("Expires", "0");
context.Response.AddHeader("Cache-Control", "must-revalidate, post-check=0, pre-check=0");
context.Response.ContentType = "application/force-download";
context.Response.Charset="UTF-8";
string exportXml = context.Request["exportXml"];
string exportFormat = context.Request["exportFormat"];
string exportData = getExcelData(HttpUtility.HtmlDecode(exportXml));
switch (exportFormat.ToUpper())
{
case "EXCEL":
exportData = getExcelData(HttpUtility.HtmlDecode(exportXml));
context.Response.AddHeader("Content-type", "application/vnd.ms-excel");
context.Response.AddHeader("Content-Disposition", "attachment;filename=\"export.xls\"");
break;
case "CSV":
exportData = getCsvData(HttpUtility.HtmlDecode(exportXml));
context.Response.AddHeader("Content-type", "text/csv");
context.Response.AddHeader("Content-Disposition", "attachment;filename=\"export.csv\"");
break;
case "XML":
exportData = getXmlData(HttpUtility.HtmlDecode(exportXml));
context.Response.AddHeader("Content-type", "text/xml");
context.Response.AddHeader("Content-Disposition", "attachment;filename=\"export.xml\"");
break;
}
context.Response.Write(exportData);
}
public string getExcelData(string exportXml)
{
StringBuilder sbExportData = new StringBuilder();
XElement xeExport = XElement.Parse(exportXml);
var qryExportDefinition = from row in xeExport.Descendants("Column")
select new
{
Name = row.Attribute("Name").Value,
Header = row.Attribute("Header").Value,
DataType = row.Attribute("DataType").Value
};
sbExportData.Append("");
sbExportData.Append("");
sbExportData.Append("");
string[] css = new string[qryExportDefinition.Count()];
int i = 0;
sbExportData.Append("");
foreach (var exportDefinition in qryExportDefinition)
{
switch (exportDefinition.DataType)
{
case "String":
css[i] = "exp_textdata";
break;
case "DateTime":
css[i] = "exp_datedata";
break;
default:
css[i] = "exp_textdata";
break;
}
sbExportData.AppendFormat("\t{0} ", exportDefinition.Header);
i++;
}
sbExportData.Append("\t ");
var qryDataRows = from row in xeExport.Descendants("Record")
select row;
foreach (var dataRow in qryDataRows)
{
sbExportData.Append("");
i = 0;
foreach (var exportDefinition in qryExportDefinition)
{
string val = dataRow.Element(exportDefinition.Name).Value;
switch (exportDefinition.DataType)
{
case "String":
css[i] = "exp_textdata";
break;
case "DateTime":
css[i] = "exp_datedata";
break;
default:
css[i] = String.Empty;
break;
}
sbExportData.AppendFormat("\t{1} ", css[i], val);
i++;
}
sbExportData.Append(" ");
}
sbExportData.Append("
");
return sbExportData.ToString();
}
public string getCsvData(string exportXml)
{
StringBuilder sbExportData = new StringBuilder();
XElement xeExport = XElement.Parse(exportXml);
var qryExportDefinition = from row in xeExport.Descendants("Column")
select new
{
Name = row.Attribute("Name").Value,
Header = row.Attribute("Header").Value,
DataType = row.Attribute("DataType").Value
};
string[] css = new string[qryExportDefinition.Count()];
//string[] header = new string[qryExportDefinition.Count()];
int i = 0;
foreach (var exportDefinition in qryExportDefinition)
{
sbExportData.Append(CsvFomratter(exportDefinition.Header));
i++;
if (i < qryExportDefinition.Count())
sbExportData.Append(",");
}
sbExportData.Append("\n");
var qryDataRows = from row in xeExport.Descendants("Record")
select row;
foreach (var dataRow in qryDataRows)
{
i = 0;
foreach (var exportDefinition in qryExportDefinition)
{
string val = dataRow.Element(exportDefinition.Name).Value;
sbExportData.AppendFormat(CsvFomratter(val));
i++;
if (i < qryExportDefinition.Count())
sbExportData.Append(",");
}
sbExportData.Append("\n");
}
return sbExportData.ToString();
}
public string getXmlData(string exportXml)
{
StringBuilder sbExportData = new StringBuilder();
XElement xeExport = XElement.Parse(exportXml);
var qryExportDefinition = from row in xeExport.Descendants("Column")
select new
{
Name = row.Attribute("Name").Value,
Header = row.Attribute("Header").Value,
DataType = row.Attribute("DataType").Value
};
sbExportData.Append("\n");
sbExportData.Append("\n");
var qryDataRows = from row in xeExport.Descendants("Record")
select row;
foreach (var dataRow in qryDataRows)
{
sbExportData.Append("\t\n");
foreach (var exportDefinition in qryExportDefinition)
{
string val = dataRow.Element(exportDefinition.Name).Value;
sbExportData.AppendFormat("\t\t<{0}>{1}\n", XmlFomratter(exportDefinition.Header), XmlFomratter(val));
}
sbExportData.Append("\t \n");
}
sbExportData.Append(" \n");
return sbExportData.ToString();
}
private string XmlFomratter(string source)
{
XmlDocument doc = new XmlDocument();
var node = doc.CreateElement("root");
node.InnerText = source;
return node.InnerXml;
}
private string CsvFomratter(string source)
{
if (source.IndexOf(',') > -1)
return "\"" + source + "\"";
else
return source;
}
public bool IsReusable
{
get
{
return false;
}
}
}