我有返回PDF文件的MVC应用程序。
public FileStreamResult GetDocument(int id)
{
return File(stream, "application/octet-stream", documentsModel.Name);
}
我有两个测试服务器。一个是私人的，另一个是公共的。
从私人我可以下载文件，我得到：
GET /Documents/GetDocument/3576 HTTP/1.1
Accept: */*
Accept-Language: en-GB
User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; BRI/2)
Accept-Encoding: gzip, deflate
Host: appserver
Connection: Keep-Alive
Cookie: ASP.NET_SessionId=vgzn4qkelxdmic3nbaqftsxd; .FidesAuthCookie=BF08E0DCAAA54D7D78AB6BD30D5ECA523C045F9B401B10693B6CE57D7D4C677C0908E24D92511DC75A487D6CAE6DD780AA8B4419A5A5D9258A4985AF6870D3AD1A0B3C01B8A620A1E14FEDDE298CCE255AE4B4C2F76D2635B8C5DF332AF19AAB; dynatree-active=3576; dynatree-focus=; dynatree-expand=496%2C603%2Cfolder_622; dynatree-select=
HTTP/1.1 200 OK
**Cache-Control: private, s-maxage=0**
Content-Type: application/octet-stream
Server: Microsoft-IIS/7.5
Set-Cookie: .FidesAuthCookie=BF08E0DCAAA54D7D78AB6BD30D5ECA523C045F9B401B10693B6CE57D7D4C677C0908E24D92511DC75A487D6CAE6DD780AA8B4419A5A5D9258A4985AF6870D3AD1A0B3C01B8A620A1E14FEDDE298CCE255AE4B4C2F76D2635B8C5DF332AF19AAB; expires=Fri, 13-Apr-2012 13:31:05 GMT; path=/
X-AspNetMvc-Version: 3.0
Content-Disposition: attachment; filename=test.pdf
X-AspNet-Version: 4.0.30319
X-Powered-By: ASP.NET
Date: Fri, 13 Apr 2012 13:01:04 GMT
Content-Length: 49613
从我的公共服务器获取
GET /Documents/GetDocument/97 HTTP/1.1
Accept: */*
Accept-Language: en-GB
User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; BRI/2)
Accept-Encoding: gzip, deflate
Host: beta.qi-care.nl
Connection: Keep-Alive
Cookie: ASP.NET_SessionId=h3utp0bfu4zwhqysntame3we; dynatree-active=97; dynatree-focus=; dynatree-expand=4%2Cfolder_10; dynatree-select=; .FidesAuthCookie=F0DED3D98BF4115C910B0A29EC2C809902B49F15518952DFA78DDB4358B5F0C1A9EDAFB50DD0CA761B433ED68034C2539ABCCDA0C50FF5EEEE3573D3C77E550416CDB24B302C9EB831AC597040E6D255E9B582E8A29D5FC03454F2A0742ECC9DEC61070091F9A66D1C3FC7F9CA10C1B8BB9B5109CB613C98AEE32AFE5A0F8A28
HTTP/1.1 200 OK
**Cache-Control: private, no-cache="Set-Cookie", s-maxage=0**
Content-Type: application/octet-stream
Server: Microsoft-IIS/7.5
Set-Cookie: .FidesAuthCookie=F0DED3D98BF4115C910B0A29EC2C809902B49F15518952DFA78DDB4358B5F0C1A9EDAFB50DD0CA761B433ED68034C2539ABCCDA0C50FF5EEEE3573D3C77E550416CDB24B302C9EB831AC597040E6D255E9B582E8A29D5FC03454F2A0742ECC9DEC61070091F9A66D1C3FC7F9CA10C1B8BB9B5109CB613C98AEE32AFE5A0F8A28; expires=Fri, 13-Apr-2012 13:19:35 GMT; path=/
X-AspNetMvc-Version: 3.0
Content-Disposition: attachment; filename=test.pdf
X-AspNet-Version: 4.0.30319
X-Powered-By: ASP.NET
Date: Fri, 13 Apr 2012 12:49:35 GMT
Content-Length: 49613
我收到错误
http://support.microsoft.com/kb/323308
出于某种原因，我从这两个服务器获得了两个不同的响应。但我在Microsoft支持上发现客户端应该更改注册表
To resolve this issue in Internet Explorer 7 and in Internet Explorer 8, follow these steps:
Start Registry Editor.
For a per-user setting, locate the following registry key:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings
For a per-computer setting, locate the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings
On the Edit menu, click Add Value.
To override the directive for HTTPS connections, add the following registry value:
"BypassSSLNoCacheCheck"=Dword:00000001
To override the directive for HTTP connections, add the following registry value:
"BypassHTTPNoCacheCheck"=Dword:00000001
Quit Registry Editor.
答案 0 :(得分：0)
我们在工作中遇到了这个问题，结果证明是Internet Explorer中的一个错误（在我们的案例中是IE8-），在尝试使用SSL下载文件时出错（你是否在https中，对吧？）。问题是，如果服务器向浏览器发送禁用缓存的http标头，则Explorer会出错。在您的情况下，maxage=0相当于Cache-Control: no cache。
解决方案服务器端是您应该覆盖此标头以告知IE8缓存响应，例如Cache-Control: private。
请注意，设置cookie时，某些应用程序服务器（例如我们的Websphere Application Server）会自动附加no-cache="Set-Cookie"。
最后，还有另一个解决问题的解决方案（如果适用），但应该在浏览器的客户端应用：