部署到IIS 7.5后的空白自定义404页面 [英] Blank custom 404 page after deploying to IIS 7.5

问题描述

不正确的网址，如 http：// localhost：54321 / foo / bar 和错误，如 HttpNotFound（）在我的本地主机处理没有问题。部署到IIS 7.5之后，它返回上述两种情况下的空白页面。我已经看到别人有这个问题这里（这是Moulde的评论与几个upvote）。代码：

Web.Config

 <&的System.Web GT; 
< customErrors mode =OffredirectMode =ResponseRedirect> 
< error statusCode =404redirect =〜/ Error / NotFound/> 
< / customErrors> 
< /system.web> 
< httpErrors errorMode =自定义existingResponse =替换> 
< remove statusCode =404/> 
< error statusCode =404responseMode =ExecuteURLpath =/ Error / NotFound/> 
< remove statusCode =500/> 
< error statusCode =500responseMode =ExecuteURLpath =/ Error / Error/> 
< / httpErrors> 
  

ErrorController

  public class ErrorController：Controller 
 {
 public ActionResult NotFound（）{
 Response.StatusCode = 404; 
 Response.TrySkipIisCustomErrors = true; 
 return View（）; 
} 
} 
  

RouteConfig

  routes.MapRoute（
Error  -  404，
NotFound，
 new {controller =Error，action =NotFound} 
）; 
 
 routes.MapRoute（
Error  -  500，
Error，
 new {controller =Error，action =Error} 
）; 
 routes.MapRoute（
 name：Default，
 url：{controller} / {action} / {id}，
 defaults：new {controller =Home ，action =Index，id = UrlParameter.Optional} 
）; 
  

NotFound

 < h2> 404未找到< / h2> 
< div class =alert alert-info> 
< p>< strong> Whoops ...< / strong>< / p> 
< p>您要查找的资源不存在< / p> 
< / div> 
  

服务器运行Windows Server 2008 R2。当我去... / foo / bar或一个操作返回 HttpNotFound（），它返回一个空白页。任何想法？

首页/测试

  public class HomeController：Controller {
 // ... 
 public ActionResult Test（）{
 return HttpNotFound（）; 
} 
} 
  

更新：
当我去服务器上的 / Error / NotFound 时，它返回一个空白页以及404。与Fiddler的回应：

  HTTP / 1.1 404未找到
缓存控制：私人
内容类型：text / html; charset = utf-8 
服务器：Microsoft-IIS / 7.5 
 X-AspNetMvc版本：5.2 
 X-AspNet版本：4.0.30319 
 X-SourceFiles：=？ UTF-8？B' QzpccWhlXFByb2plY3RzXFZlbmRvclBvcnRhbFxWZW5kb3JQb3J0YWxcRXJyb3JcTm90Rm91bmQ =？= 
 X-Powered by：ASP.NET 
日期：星期四，2015年4月23日13:24:49 GMT 
内容长度：5434 
  

更新2：
如果我采取 existingResponse =Replace ，我可以在服务器上打开Error / NotFound。但是仍然在 MyServer / MyProject / foo / bar

解决方案

在我的情况下，原因是在IIS - 网页设置 - 请求过滤 - SQL注入过滤器...

如果url或查询字符串包含; ，响应以状态404.19结束 - 过滤规则被拒绝。然后显示空白页。 IIS重定向到这样的自定义错误 http://server.com/ Error404.aspx？404; http：//server.com/missingURL 和char ; 是为什么请求过滤器由于SQL注入而结束请求。 p>

Incorrect urls like http://localhost:54321/foo/bar and errors like HttpNotFound() are handled in my localhost without problems. After deploying to IIS 7.5, it return a blank page on both of the above scenarios. I've seen someone else had this problem Here(It was the comment from Moulde with several upvotes). The code:

Web.Config

<system.web>
  <customErrors mode="Off" redirectMode="ResponseRedirect">
    <error statusCode="404" redirect="~/Error/NotFound"/>
  </customErrors>
</system.web>
<httpErrors errorMode="Custom" existingResponse="Replace">
  <remove statusCode="404" />
  <error statusCode="404" responseMode="ExecuteURL" path="/Error/NotFound"/>
  <remove statusCode="500" />
  <error statusCode="500" responseMode="ExecuteURL" path="/Error/Error"/>
</httpErrors>

ErrorController

public class ErrorController : Controller
{
    public ActionResult NotFound() {
        Response.StatusCode = 404;
        Response.TrySkipIisCustomErrors = true;
        return View();
    }
}

RouteConfig

 routes.MapRoute(
            "Error - 404",
            "NotFound",
            new { controller = "Error", action = "NotFound" }
            );

        routes.MapRoute(
            "Error - 500",
            "Error",
            new { controller = "Error", action = "Error" }
            );
        routes.MapRoute(
            name: "Default",
            url: "{controller}/{action}/{id}",
            defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
        );

NotFound

<h2>404 Not Found</h2>
<div class="alert alert-info">
    <p><strong>Whoops...</strong></p>
    <p>The resource you were looking for doesn't exist</p>
</div>

The server runs Windows Server 2008 R2. When I go to .../foo/bar or an action returns HttpNotFound(), it returns a blank page. Any idea?

Home/Test

public class HomeController: Controller{
    // ...
    public ActionResult Test(){
        return HttpNotFound();
    }
}

Update: When I go to /Error/NotFound on server, it returns a blank page as well with 404. The response with Fiddler:

HTTP/1.1 404 Not Found
Cache-Control: private
Content-Type: text/html; charset=utf-8
Server: Microsoft-IIS/7.5 
X-AspNetMvc-Version: 5.2
X-AspNet-Version: 4.0.30319
X-SourceFiles: =?UTF-8?B?  QzpccWhlXFByb2plY3RzXFZlbmRvclBvcnRhbFxWZW5kb3JQb3J0YWxcRXJyb3JcTm90Rm91bmQ=?=
X-Powered-By: ASP.NET
Date: Thu, 23 Apr 2015 13:24:49 GMT
Content-Length: 5434

Update 2: If I take existingResponse="Replace" away, I can open Error/NotFound on the server. But still got blank page on MyServer/MyProject/foo/bar

解决方案

In my case the reason was in IIS - web settings - Request Filtering - SQL injection filter...

If url or query string contains ;, response ends with status 404.19 - Denied by filtering rule. Then blank page is displayed. IIS redirect to custom error like this http://server.com/Error404.aspx?404;http://server.com/missingURL and the char ; is why Request Filter end your request because of SQL injection.

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