blocks|key|930421|text|正如你所说，这可能是你的母版页所引用的丢失的文件或图像。要捕获错误，请将以下错误处理程序添加到Global.asax中|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|930422|protected+void+Application_Error(object+sender,+EventArgs+e)
{
++++Exception+ex+=+Server.GetLastError();

++++if+(ex.Message+==+"File+does+not+exist.")
++++{
++++++++throw+new+Exception(string.Format("{0}+{1}",+ex.Message,+HttpContext.Current.Request.Url.ToString()),+ex);
++++}
}|code-block|syntax|javascript|930423|这应该会告诉您页面正在请求的资源是什么|930424|entityMap^0|1B|B|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

As you say, its probably a missing file or image referenced by your master page. To capture the error, add the following error handler to your <code>Global.asax</code> 

<pre><code>protected void Application_Error(object sender, EventArgs e)
{
 Exception ex = Server.GetLastError();

 if (ex.Message == "File does not exist.")
 {
 throw new Exception(string.Format("{0} {1}", ex.Message, HttpContext.Current.Request.Url.ToString()), ex);
 }
}
</code></pre>

This should then tell you what resource the page is requesting

blocks|key|1144957|text|或者，如果是调试，只需在“即时”窗口中放入以下行即可进行检查：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1144958|？HttpContext.Current.Request.Url.ToString()|1144959|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Or if debugging you can just put the following line in the Immediate Window to check:

? HttpContext.Current.Request.Url.ToString()

blocks|key|1144998|text|检查CSS文件中不存在"+resource_path“的url(+Resource_path)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1144999|我得到了同样的异常。在CSS文件中发现问题，其中项目中缺少图像文件，而文件系统中没有图像文件。例如，像这样的行：|1145000|background-image:+url(+/images/foo.png+);|code-block|syntax|javascript|1145001|其中"foo.png“文件不在图像文件夹中。|1145002|您可以将最后一个异常转换为HttpException以获取HTML状态代码：|1145003|HttpException+httpEx+=+Server.GetLastError()+as+HttpException;
if(+httpEx+!=+null+)
++++httpEx.GetHttpCode();+++++++++//+Will+be+HTML+status+code,+404+in+this+case.+|1145004|但它不包含任何缺少哪个文件的信息。我通过检查页面上的每个CSS类声明是否发生了这个错误，找到了丢失的文件。|1145005|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|V|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|W|8|@]|9|@]|A|$]]|$1|M|3|N|5|F|7|X|8|@]|9|@]|A|$G|H]]|$1|O|3|P|5|6|7|Y|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

Check your CSS files for url( resource_path ) where "resource_path" doesn't exist.

I was getting the same exception. Found problem was in CSS file where an image file was missing from the project and not on the file system. For example a line like:

<pre><code>background-image: url( /images/foo.png );
</code></pre>

Where "foo.png" file isn't in in the images folder.

You can cast the last exception as an HttpException to get the HTML status code:

<pre><code>HttpException httpEx = Server.GetLastError() as HttpException;
if( httpEx != null )
 httpEx.GetHttpCode(); // Will be HTML status code, 404 in this case. 
</code></pre>

But it doesn't contain any information what file is missing. I found the missing file by checking every CSS class declaration on the page were this error was occurring.

blocks|key|1145014|text|在我的例子中，我得到了相同的错误，尽管我没有在浏览器控制台中发现任何"404错误“。我甚至检查了主文件，没有发现任何文件丢失。事实证明，浏览器希望favicon.ico位于站点的根目录。我在我的站点的根目录创建了一个favicon.ico，这个问题已经解决了。这是一个很好的生成图标的网站：http://www.favicon.cc/|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1145015|entityMap|0|LINK|mutability|MUTABLE|url|http://www.favicon.cc/^0|41|M|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

In my case I was getting the same error, although I did not find any "404 errors" in the browser console. I even checked the Master file and could not find any file missing. 
It turned out that the browser expects favicon.ico to be at the root of the site. 
I created a favicon.ico at the root of my site and the issue is gone. 
This was a good website to generate the icon: <a href="http://www.favicon.cc/" rel="nofollow">http://www.favicon.cc/</a>

blocks|key|930549|text|在Global.asax文件中添加以下方法|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|930550|protected+void+Application_Error(object+sender,+EventArgs+e)
{
++++Exception+ex+=+Server.GetLastError();
++++Log.Error("An+error+occurred",+ex);
++++Log.Error("Requested+url:+",+Request.RawUrl);
}|code-block|syntax|javascript|930551|Request.RawUrl给出了给出错误的确切url。|930552|现在，在您的日志文件中，您应该看到：|930553|Requested+url:+/favicon.ico|930554|entityMap^0|1|B|0|0|0|E|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|M|3|N|5|6|7|Z|8|@]|D|@]|E|$]]|$1|O|3|P|5|H|7|10|8|@]|D|@]|E|$I|J]]|$1|Q|3|-4|5|6|7|11|8|@]|D|@]|E|$]]]|R|$]]

Add following method in <code>Global.asax</code> file

<pre><code>protected void Application_Error(object sender, EventArgs e)
{
 Exception ex = Server.GetLastError();
 Log.Error("An error occurred", ex);
 Log.Error("Requested url: ", Request.RawUrl);
}
</code></pre>

<code>Request.RawUrl</code> Give exact url which give an Error.

Now in your log file you should see:

<pre><code>Requested url: /favicon.ico
</code></pre>

blocks|key|1145096|text|在我的例子中，一个缺省的主页，即default.aspx，是罪魁祸首。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1145097|所以添加default.aspx文件就解决了这个问题。|1145098|但是，此项目不需要默认页面，因为它不是面向用户的项目。|1145099|它更像是一个通过web连接遗留系统的中间件应用程序。|1145100|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

in my case it was a missing default home page i.e default.aspx that was the culprit.

So adding the default.aspx file solved the problem.

However, this project does not require a default page as it's not a user facing project.

It's was more of a middleware app to interface legacy systems over the web.

I have a basic ASP.NET MVC2 site which logs a single "File does not exist" error every time a view (not partial views) is loaded. I am pretty sure this is because I am referencing a file, from the master page, that does not exist, but I cannot figure out which one it is.

The stack trace is not useful (see below). Does anyone have any tips on how to best debug this?

<pre><code>File does not exist. : at System.Web.StaticFileHandler.GetFileInfo(String virtualPathWithPathInfo, String physicalPath, HttpResponse response)
 at System.Web.StaticFileHandler.ProcessRequestInternal(HttpContext context)
 at System.Web.DefaultHttpHandler.BeginProcessRequest(HttpContext context, AsyncCallback callback, Object state)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean&amp; completedSynchronously)
</code></pre>

How to solve exception "File does not exist"?

我有一个基本的ASP.NET MVC2站点，每次加载一个视图(不是局部视图)时，它都会记录一个“文件不存在”的错误。我很确定这是因为我从母版页引用了一个不存在的文件，但我不知道是哪个文件。堆栈跟踪没有用(见下文)。有没有人有任何关于如何最好地调试它的提示？File does not exist. :    at Sys...

问如何解决异常“文件不存在”？
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