我在我的控制器中有这个Action,它将一个文件返回给用户。
public virtual ActionResult ReturnFile(string fileName, string filePath, string contentType)
{
var cd = new System.Net.Mime.ContentDisposition
{
FileName = fileName,
// always prompt the user for downloading, set to true if you want
// the browser to try to show the file inline
Inline = false,
};
// set token for close the modal-window
CookiesHelper.SetValueDownloadTokenInCookie();
Response.AppendHeader("Content-Disposition", cd.ToString());
return File(filePath, contentType);
}
它工作正常,但问题是当文件很大(略大于220 Mb)时,它会抛出OutOfMemoryException
。
这是堆栈跟踪
[OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.]
System.IO.MemoryStream.set_Capacity(Int32 value) +93
System.IO.MemoryStream.EnsureCapacity(Int32 value) +64
System.IO.MemoryStream.Write(Byte[] buffer, Int32 offset, Int32 count) +330
Microsoft.VisualStudio.Web.PageInspector.Runtime.Tracing.ArteryFilter.Write(Byte[] buffer, Int32 offset, Int32 count) +106
System.Web.HttpWriter.FilterIntegrated(Boolean finalFiltering, IIS7WorkerRequest wr) +9509748
System.Web.HttpResponse.FilterOutput() +104
System.Web.CallFilterExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +49
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +69
有什么想法吗?
答案 0 :(得分:9)
这是因为您的请求正在使用PageInspector
,如堆栈跟踪的这一行所示:
Microsoft.VisualStudio.Web.PageInspector.Runtime.Tracing.ArteryFilter.Write(Byte [] buffer,Int32 offset,Int32 count)+106
要解决此问题,请取消选中Visual Studio
中的浏览器复选框,如以下屏幕截图所示:
答案 1 :(得分:0)
我认为您可以通过在Web.config文件中设置maxQueryString来解决问题。如果您尚未进行设置,请查看以下代码:
<system.webServer>
<security>
<requestFiltering>
<requestLimits maxUrl="10999" maxQueryString="9999" />
</requestFiltering>
</security>
</system.webServer>
您可以根据需要设置最大值。