FilePathResult抛出带有大文件的OutOfMemoryException [英] FilePathResult thrown an OutOfMemoryException with large file

问题描述

我的控制器中有此操作，该操作会将文件返回给用户.

I have this Action in my controller which returns a file to the user.

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，但是问题在于，当文件很大(略大于220 Mb)时，它会抛出OutOfMemoryException.

It is working fine, but the problem is that when the file is large (a little more than 220 Mb) it is throwing an 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?

推荐答案

这是因为您的请求正在使用PageInspector，如堆栈跟踪的这一行所示:

It is because your request is using PageInspector as indicated by this line of your stack trace:

Microsoft.VisualStudio.Web.PageInspector.Runtime.Tracing.ArteryFilter.Write(Byte []缓冲区，Int32偏移量，Int32计数)+106

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:

To fix this, uncheck the browser checkbox in Visual Studio as in the following screen shot:

这篇关于FilePathResult抛出带有大文件的OutOfMemoryException的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！