这个是客户端表格导出伪Excel文档. 不知道为啥,超过200条,不能导出,显示网络错误
$.extend($.fn.datagrid.methods, { //超过200条,不能导出,显示网络错误?? toExcel: function(jq, filename){ return jq.each(function(){ var uri = 'data:application/vnd.ms-excel;base64,' , template = '<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns="http://www.w3.org/TR/REC-html40"><head><!--[if gte mso 9]><xml><x:ExcelWorkbook><x:ExcelWorksheets><x:ExcelWorksheet><x:Name>{worksheet}</x:Name><x:WorksheetOptions><x:DisplayGridlines/></x:WorksheetOptions></x:ExcelWorksheet></x:ExcelWorksheets></x:ExcelWorkbook></xml><![endif]--></head><body><table>{table}</table></body></html>' , base64 = function (s) { return window.btoa(unescape(encodeURIComponent(s))) } , format = function (s, c) { return s.replace(/{(w+)}/g, function (m, p) { return c[p]; }) } var alink = $('<a style="display:none"></a>').appendTo('body'); var view = $(this).datagrid('getPanel').find('div.datagrid-view'); var ignoreColumnIndex = 2;//前3列不导出 //冻结的表格 var table = view.find('div.datagrid-view2 table.datagrid-btable').clone(); var tbody = table.find('>tbody'); view.find('div.datagrid-view1 table.datagrid-btable>tbody>tr').each(function (index) { $(this).clone().children().prependTo(tbody.children('tr:eq(' + index + ')')); }); //非冻结表格 var head = view.find('div.datagrid-view2 table.datagrid-htable').clone(); var hbody = head.find('>tbody'); view.find('div.datagrid-view1 table.datagrid-htable>tbody>tr').each(function (index) { $(this).clone().children().prependTo(hbody.children('tr:eq(' + index + ')')); }); hbody.prependTo(table); var ctx = { worksheet: name || 'Worksheet', table: table.html() || '' }; alink[0].href = uri + base64(format(template, ctx)); alink[0].download = filename; alink[0].click(); alink.remove(); }) }, toExcelUnfreeze: function (jq, filename) { return jq.each(function () { var uri = 'data:application/vnd.ms-excel;base64,' , template = '<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns="http://www.w3.org/TR/REC-html40"><head><meta charset="utf-8"/><!--[if gte mso 9]><xml><x:ExcelWorkbook><x:ExcelWorksheets><x:ExcelWorksheet><x:Name>{worksheet}</x:Name><x:WorksheetOptions><x:DisplayGridlines/></x:WorksheetOptions></x:ExcelWorksheet></x:ExcelWorksheets></x:ExcelWorkbook></xml><![endif]--></head><body><table>{table}</table></body></html>' , base64 = function (s) { return window.btoa(unescape(encodeURIComponent(s))) } , format = function (s, c) { return s.replace(/{(w+)}/g, function (m, p) { return c[p]; }) } var alink = $('<a style="display:none"></a>').appendTo('body'); var view = $(this).datagrid('getPanel').find('div.datagrid-view'); //非冻结列的table body var table = view.find('div.datagrid-view2 table.datagrid-btable').clone(); //非冻结列的table header var head = view.find('div.datagrid-view2 table.datagrid-htable').clone(); var hbody = head.find('>tbody'); hbody.prependTo(table); var ctx = { worksheet: filename || 'Worksheet', table: table.html() || '' }; alink[0].href = uri + base64(format(template, ctx)); alink[0].download = filename; alink[0].click(); alink.remove(); }) }, })
改成服务器端导出
var qry = GetData(keys, values); //如果 path2 不包括根（例如，如果 path2 没有以分隔符或驱动器规格起始），则结果是两个路径的串联，具有介于其间的分隔符。如果 path2 包括根，则返回 path2。 string wwwroot = Path.Combine(_host.ContentRootPath, "wwwroot"); //改在wwwroot目录下,方便在新窗口打开 string Template = "template.xlsx"; string templateFilePath = Path.Combine(wwwroot, Template); string pureFileName = DateTime.Now.ToString("yyyyMMddHHmmssfff_") + "Achievement"; //每天一个文件夹 string destFilePath = wwwroot + "\Achievement\" + pureFileName + ".xlsx"; try { using (ExcelPackage ep = new ExcelPackage(new FileInfo(templateFilePath))) { ExcelWorksheet ws = ep.Workbook.Worksheets[0]; //第1张Sheet int colStart = ws.Dimension.Start.Column; //工作区开始列,start=1 int colEnd = ws.Dimension.End.Column; //工作区结束列 int rowStart = ws.Dimension.Start.Row; //工作区开始行号,start=1 int rowEnd = ws.Dimension.End.Row; //工作区结束行号 var lst = qry.ToList(); for (int i = 0; i < lst.Count; i++) { int j = 1; ws.Cells[i + 2, j++].Value = lst[i].BelongDate; ws.Cells[i + 2, j++].Value = lst[i].Region; ws.Cells[i + 2, j++].Value = lst[i].DepName; ws.Cells[i + 2, j++].Value = lst[i].ProjectName; ws.Cells[i + 2, j++].Value = lst[i].Remark; } ws.Calculate(); //重算公式 ep.SaveAs(new FileInfo(destFilePath)); return Download(destFilePath); } } catch (Exception ex) { return Json(new { isSuccess = false, message = "失败:" + ex.Message }, "text/html"); } }
之前导出时,还用了一个错误方法,这个方法在数据量少时,还能正常导出,数据量超过几M就显示网络错误.
FileInfo DownloadFile = new FileInfo(FullFileName); if (DownloadFile.Exists) { Response.Clear(); Response.Headers.Clear(); Response.ContentType = "application/octet-stream"; Response.Headers.Add("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(DownloadFile.Name, System.Text.Encoding.UTF8)); Response.Headers.Add("Content-Length", DownloadFile.Length.ToString()); Response.SendFileAsync(DownloadFile.FullName); } return Content("")
改成这样就正常了
FileInfo DownloadFile = new FileInfo(FullFileName);
return File(file2byte(FullFileName), "application/octet-stream", HttpUtility.UrlEncode(DownloadFile.Name, System.Text.Encoding.UTF8));
//从文件读取 byte
public byte[] file2byte(string fileName)
{
// 打开文件
FileStream fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.Read);
// 读取文件的 byte[]
byte[] bytes = new byte[fileStream.Length];
fileStream.Read(bytes, 0, bytes.Length);
fileStream.Close();
return bytes;
}