我有我打電話用這個很基本的js代碼的通用處理器:重定向響應下載文件
var formData = new FormData();
formData.append("fileId", this.model.get("id"));
xhr = new XMLHttpRequest();
xhr.open('POST', '/genericHandlers/DownloadFile.ashx');
xhr.onload = function() {
if (xhr.status === 200) {
// Do something here?
}
}
xhr.send(formData);
我一般的處理程序代碼似乎看行給我。基本上我試圖構建響應頭,我認爲當這個處理程序返回它將開始下載文件。
處理程序代碼:
var fileId = context.Request.Form["fileId"];
// File stored in the db as a byte array
var file = (from f in dataContext.OneEVA_Docs_File_Storages
where Equals(f.ID, fileId)
select f).FirstOrDefault();
context.Response.Clear();
context.Response.AddHeader("Content-Type", file.ContentType);
context.Response.AddHeader("Content-Length", file.ContentLength.ToString());
context.Response.AddHeader("Content-Disposition", string.Format("attachment; filename={0}; size={1}", file.Name, file.ContentLength));
context.Response.BinaryWrite(file.File_Image.ToArray());
context.Response.Flush();
context.Response.End();
的XHR
請求完成確定。以下是我回復的回覆標題:
Cache-Control:private
Connection:Close
Content-Disposition:attachment; filename=Mikes File; size=1860113
Content-Length:1860113
Content-Type:image/jpeg
Date:Wed, 16 May 2012 14:08:01 GMT
Server:ASP.NET Development Server/10.0.0.0
X-AspNet-Version:4.0.30319
我錯過了什麼?我究竟做錯了什麼?
什麼問題?文件沒有被放入響應中嗎? – sinni800
@ sinni800它只是回來,沒有下載。 –