我正在将文档存储在数据库中,并具有用于下载文档的API.
docx和xlsx的下载在IE9,Chrome和FF中运行良好但在真正的IE8中失败.(IE8模式下的IE 9也可以)
我得到的错误消息如下：
Unable to download 393 from idler2.
Unable to open this Internet site. The requested site is either@H_502_10@ unavailable or cannot be found. Please try again later.
使用以下响应标头：@H_502_10@HTTP / 1.1 200好的@H_502_10@缓存控制：无缓存@H_502_10@Pragma：没有缓存
Content-Length: 10255 Content-Type: application/octet-stream Expires: -1 Server: Microsoft-IIS/7.5 Content-Disposition: attachment; filename=document.docx X-AspNet-Version: 4.0.30319 X-Powered-By: ASP.NET Date: Sat,23 Mar 2013 11:30:41 GMT
这是我的api方法：
public HttpResponseMessage GetDocumentContent(int id)
{
Document document = Repository.StorageFor<Client>().GetDocument(id);
HttpResponseMessage response = Request.CreateResponse(System.Net.HttpStatusCode.OK);
response.Content = new ByteArrayContent(document.GetBuffer());
response.Content.Headers.ContentLength = document.GetBuffer().Length;
response.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment")
{
//FileName = document.GetFileName(),FileName = "document.docx",DispositionType = "attachment"
};
response.Content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");
return response;
}
解决方法
我假设您在SSL下遇到此问题.如果是,那么这是一个
known issue.本文讨论Office文档,但此问题适用于所有文件类型.
该文的解决方案是删除无缓存标头,但还有更多内容.当IE8通过SSL与网站通信时,IE8会强制执行任何无缓存请求.如果存在标头或标头,则IE8不会缓存该文件.因此无法打开文件.所有这些都是IE5到IE8特有的.
在MVC Web API中,它实际上又迈出了一步.由于您要创建新的HttpResponseMessage,因此还必须在消息的标题上创建CacheControlHeaderValue.您不必设置任何标头属性,只需实例化一个新属性.标题将默认为所需内容,因此您不必更改属性.
public HttpResponseMessage GetDocumentContent(int id)
{
Document document = Repository.StorageFor<Client>().GetDocument(id);
HttpResponseMessage response = Request.CreateResponse(System.Net.HttpStatusCode.OK);
response.Headers.CacheControl = new CacheControlHeaderValue(); // required
response.Content = new ByteArrayContent(document.GetBuffer());
response.Content.Headers.ContentLength = document.GetBuffer().Length;
response.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment")
{
FileName = "document.docx"
};
response.Content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");
return response;
}
我有确切的问题,但这解决了它.
