blocks|key|993975|text|是的，可以获得导致404错误的URL，您只需确保已正确配置了IIS。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|993976|有两种情况需要处理，一种是错误来自.NET处理的.aspx或其他页面，另一种是错误来自不是由.NET处理的错误文件夹(如http://example.com/testurl)或文件名(例如*.htm)。在IIS7中，您需要在web应用程序的"ASP.NET“部分的".NET+error+Pages”和"+IIS“部分的"Error+Pages”下配置自定义的404错误。web.config更改最终看起来如下所示：|offset|length|style|CODE|993977|<system.web>
++++
++++<customErrors+defaultRedirect="/Error404.aspx"+mode="On"+redirectMode="ResponseRewrite">
++++++++<error+redirect="/Error404.aspx"+statusCode="404"+/>
++++</customErrors>
</system.web>
<system.webServer>
++++
++++<httpErrors+errorMode="Custom">
++++++++<remove+statusCode="404"+subStatusCode="-1"+/>
++++++++<error+statusCode="404"+prefixLanguageFilePath=""+path="/Error404.aspx"+responseMode="ExecuteURL"+/>
++++</httpErrors>
</system.webServer>|code-block|syntax|javascript|993978|注意:如果你想让你的404页面实际返回404消息，上面列出的redirectMode="ResponseRewrite“是很重要的，我不认为它可以通过IIS来设置。|993979|在我的示例中，我创建了一个名为Error404.aspx的页面来处理所有404错误。当.NET页面(.aspx等)抛出404异常时，可以在aspxerrorpath+querystring变量中找到原始文件名。当常规的htm或其他页面导致404错误时，可以从Request.RawUrl属性中读取原始路径。我在Error404.aspx页面中使用了以下代码来处理这两种情况：|993980|public+partial+class+Error404+:+System.Web.UI.Page
{
++++protected+void+Page_Load(object+sender,+EventArgs+e)
++++{
++++++++OriginalUrl+=+Request.QueryString["aspxerrorpath"]+??+Request.RawUrl;
++++++++Server.ClearError();
++++++++Response.Status+=+"404+not+found";
++++++++Response.StatusCode+=+404;
++++}

++++public+string+OriginalUrl+{+get;+private+set;+}
}|993981|默认情况下，404错误页不会返回404状态码，因此需要手动设置。有关更多详细信息，请参阅this+post。|993982|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/4302566/asp-net-custom-error-page-for-404-returns-302-for-http-status^0|0|1O|Q|0|0|0|0|0|18|9|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|13|8|@$D|14|E|15|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|16|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|17|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|18|8|@]|9|@]|A|$]]|$1|Q|3|R|5|J|7|19|8|@]|9|@]|A|$K|L]]|$1|S|3|T|5|6|7|1A|8|@]|9|@$D|1B|E|1C|1|1D]]|A|$]]|$1|U|3|-4|5|6|7|1E|8|@]|9|@]|A|$]]]|V|$W|$5|X|Y|Z|A|$10|11]]]]

Yes, it is possible to get the URL that causes the 404 error, you just need to make sure you have IIS configured properly.

There are two cases you need to handle, one is where the error comes from an .aspx or other page that is handled by .NET, and the other is where the error comes from a bad folder (as in your question, <code>http://example.com/testurl</code>) or filename (for example, *.htm) that is not handled by .NET. In IIS 7, you'll need to configure a custom 404 error under ".NET Error Pages" in the "ASP.NET" section for your web app, and also under "Error Pages" in the "IIS" section. The web.config changes end up looking something like this:

<pre><code>&lt;system.web&gt;
 &lt;!-- other system.web stuff --&gt;
 &lt;customErrors defaultRedirect="/Error404.aspx" mode="On" redirectMode="ResponseRewrite"&gt;
 &lt;error redirect="/Error404.aspx" statusCode="404" /&gt;
 &lt;/customErrors&gt;
&lt;/system.web&gt;
&lt;system.webServer&gt;
 &lt;!-- other system.webServer stuff --&gt;
 &lt;httpErrors errorMode="Custom"&gt;
 &lt;remove statusCode="404" subStatusCode="-1" /&gt;
 &lt;error statusCode="404" prefixLanguageFilePath="" path="/Error404.aspx" responseMode="ExecuteURL" /&gt;
 &lt;/httpErrors&gt;
&lt;/system.webServer&gt;
</code></pre>

Note: the redirectMode="ResponseRewrite" listed above is important if you want your 404 pages to actually return 404 messages and I don't think it can be set through IIS.

In my example, I created a page called Error404.aspx to handle all of the 404 errors. When a .NET page (.aspx, etc) throws a 404 exception, the original filename can be found in the aspxerrorpath querystring variable. When a regular htm or other page causes a 404 error, the original path can be read from the Request.RawUrl property. I used the following code in my Error404.aspx page to handle either case:

<pre><code>public partial class Error404 : System.Web.UI.Page
{
 protected void Page_Load(object sender, EventArgs e)
 {
 OriginalUrl = Request.QueryString["aspxerrorpath"] ?? Request.RawUrl;
 Server.ClearError();
 Response.Status = "404 not found";
 Response.StatusCode = 404;
 }

 public string OriginalUrl { get; private set; }
}
</code></pre>

By default, the 404 error page will not return a 404 status code, so you need to set it manually. See <a href="https://stackoverflow.com/questions/4302566/asp-net-custom-error-page-for-404-returns-302-for-http-status">this post</a> for more detail.

I have an .aspx page as my custom 404 page on a site set up on IIS 7. I need to retrieve the original URL that the user was trying to access in order to do some processing on the 404 page. The trick is that I need to specifically handle 404's that do not contain a .aspx extension (e.g <code>http://example.com/testurl</code>), which do not get routed through ASP.NET's custom errors section. I can configure IIS to point to my custom 404, but at that point I do not know how to get my original URL? Does anyone know if this is possible?

Thanks,

Mike

Accessing original URL in IIS7 404 redirect page

路由

在IIS7上设置的站点上，我有一个.aspx页面作为我的自定义404页面。我需要检索用户试图访问的原始URL，以便在404页面上执行一些处理。诀窍是，我需要专门处理不包含.aspx扩展名(例如http://example.com/testurl)的404，它们不会通过ASP.Net的自定义错误部分进行路由。我可以将II...

问访问IIS7 404重定向页面中的原始URL
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