前端准备：
//Download the template through "POST" request function getTargertContainer() { var $tagertContainer = $("#gridviewContainer"); if ($("#gridview_Import_dialog").size()) { $tagertContainer = $("#gridview_Import_dialog").parent(); } return $tagertContainer; } function downloadExcelTemplate() { var criteria = $("#gridview").data("kendoGrid").options.temp.criteria; criteria.GetIdCollectionOnlyAndIgnorePagination = true; criteria.withData = true; if ($("#iframeforDownload").size()) { $("#iframeforDownload").remove(); } $("<iframe frameborder='1' width='0' height='0' src='about:blank' scrolling='no' id='iframeforDownload'>").appendTo("body"); var iframe = $("#iframeforDownload"); var iframeDocument = iframe[0].contentDocument || iframe[0].contentWindow.document; var content = "<html><head><meta charset='utf-8' /></head><body><form action='/ExcelBulkEdit/DownloadTemplate' method='post'>"; for (var prop in criteria) { if (typeof criteria[prop] == "object") { for (var i = 0; i < criteria[prop].length; i++) { for (var childprop in criteria[prop][i]) { content += "<input name='" + prop + "[" + i + "]." + childprop + "' type='hidden' value='" + criteria[prop][i][childprop] + "'/>"; } } } else { content += "<input name='" + prop + "' type='hidden' value='" + criteria[prop] + "'/>"; } } content += "</form></body></html>"; if (iframe[0].contentWindow.contents) { iframe[0].contentWindow.contents = content; } else { iframe[0].contentWindow.document.open(); iframe[0].contentWindow.document.write(content); iframe[0].contentWindow.document.close(); } $(iframeDocument).find("form").submit(); var maxTimeout = 5 * 60 * 1000; //Waiting 5 minutes var ticks = 0; var checkTimer = setInterval(function () { var lowerCaseCookie = "fileDownload=true".toLowerCase(); if (document.cookie.toLowerCase().indexOf(lowerCaseCookie) > -1) { clearInterval(checkTimer); //execute specified callback getTargertContainer().stopProgressTimer(); //remove cookie var cookieData = "fileDownload=; path=/; expires=" + new Date(0).toUTCString() + ";"; document.cookie = cookieData; return; } if (ticks * 1000 > maxTimeout) { clearInterval(checkTimer); } ticks++; }, 1000); }
后端准备：
public partial class ExcelBulkEditController : Controller { [AcceptVerbs(HttpVerbs.Get | HttpVerbs.Post), FileDownload] public void DownloadTemplate(GridQueryCriteriaModel criteria, MetaType metaType, bool withData) ...........
[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, Inherited = true, AllowMultiple = false)] public class FileDownloadAttribute : ActionFilterAttribute { public FileDownloadAttribute(string cookieName = "fileDownload", string cookiePath = "/") { CookieName = cookieName; CookiePath = cookiePath; } public string CookieName { get; set; } public string CookiePath { get; set; } /// <summary> /// If the current response is a FileResult (an MVC base class for files) then write a /// cookie to inform jquery.fileDownload that a successful file download has occured /// </summary> /// <param name="filterContext"></param> private void CheckAndHandleFileResult(ActionExecutedContext filterContext) { var httpContext = filterContext.HttpContext; var response = httpContext.Response; if ( filterContext.Result is EmptyResult ) //jquery.fileDownload uses this cookie to determine that a file download has completed successfully response.AppendCookie(new HttpCookie(CookieName, "true") { Path = CookiePath }); else //ensure that the cookie is removed in case someone did a file download without using jquery.fileDownload if ( httpContext.Request.Cookies[CookieName] != null ) { response.AppendCookie(new HttpCookie(CookieName, "true") { Expires = DateTime.Now.AddYears(-1), Path = CookiePath }); } } public override void OnActionExecuted(ActionExecutedContext filterContext) { CheckAndHandleFileResult(filterContext); base.OnActionExecuted(filterContext); } }