web.config/Global.asax中的自定义错误处理不处理不存在的目录

Question

问题是:为什么自定义错误处理不适用于不存在的路径/目录？

更新了固定代码(感谢大家为您输入):

*更新了web.config和global.asax *的代码

<httpErrors errorMode="Custom">
        <remove statusCode="500" subStatusCode="-1" />
        <remove statusCode="404" subStatusCode="-1" />
        <error statusCode="404" subStatusCode="-1" prefixLanguageFilePath="" path="/*****.aspx" responseMode="ExecuteURL" />
        <error statusCode="500" subStatusCode="-1"  prefixLanguageFilePath="" path="/*****.aspx"  responseMode="ExecuteURL"/>
    </httpErrors>

    added this to the global.asax to stop IIS from handling my 500 errors
    after @Kev's suggestions IIS handled my 500's these lines fixed that
    HttpApplication myApplication = new HttpApplication();
    myApplication.Response.TrySkipIisCustomErrors = true;

我们有一个站点设置自定义错误处理web.config和global.asax(设置如下图所示).我们能够毫无问题地处理所有404和500.错误被记录Application_Error在global.asax,记录到数据库然后使用HttpContext我们设置状态代码并用于Server.Transfer()将用户移动到相应的错误页面(重定向导致302,并伤害搜索引擎优化).

问题是当用户键入http://www.example.com/whatever空白页面时显示在Firefox中,而在IE中显示IE 404页面.Firebug没有显示被激活的状态代码,当我调试解决方案时,我没有设置任何断点global.asax.奇怪的是,用户可以输入http://www.example.com/whatever/hmm.aspx并且会遇到错误.它似乎只适用于不存在的页面而不是不存在的路径/目录.

下面是我web.config的错误global.asax代码和我的应用程序错误代码.

我添加了**来隐藏信息,它们中包含有效.aspx页面:

网络配置:

<customErrors defaultRedirect="~/******.aspx" mode="On" 
              redirectMode="ResponseRewrite">
    <error statusCode="500" redirect="~/*****.aspx" />
    <error statusCode="404" redirect="~/*****.aspx" />
</customErrors>

    <httpErrors errorMode="Custom">
        <remove statusCode="500" subStatusCode="-1" />
        <remove statusCode="404" subStatusCode="-1" />
        <error statusCode="404" subStatusCode="-1" prefixLanguageFilePath="" path="/*****.aspx" responseMode="ExecuteURL" />
        <error statusCode="500" subStatusCode="-1"  prefixLanguageFilePath="" path="/*****.aspx"  responseMode="ExecuteURL"/>
    </httpErrors>

码:

protected void Application_Error(Object sender, EventArgs e)
{
    // At this point we have information about the error
    HttpContext ctx = HttpContext.Current;

    // set the exception to the Context 
    Exception exception = ctx.Server.GetLastError();

    // get the status code of the Error
    int httpCode = ((HttpException)exception).GetHttpCode();

    // get the IP Address
    String strHostName = string.Empty;
    String ipAddress_s = string.Empty;
    strHostName = System.Net.Dns.GetHostName();

    System.Net.IPHostEntry ipEntry = System.Net.Dns.GetHostByName(strHostName);
    System.Net.IPAddress[] addr = ipEntry.AddressList;

    for (int i = 0; i < addr.Length; i++)
    {
        ipAddress_s += "IP Address {" + (i + 1) + "} " + 
                            addr[i].ToString() + Environment.NewLine;
    }

    // setup the error info one for user display and one for the DB Insert
    string errorInfo =
       "<br /><b>Error Location:</b> " + ctx.Request.Url.ToString() +
       "<br /><br /><b>Error Source:</b> " + exception.Source +
       "<br /><br /><b>Error Try/Catch:</b> " + exception.InnerException +
       "<br /><br /><b>Error Info:</b> " + exception.Message +
       "<br /><br /><b>Status Code:</b> " + httpCode +
       "<br /><br /><b>Stack trace:</b> " + exception.StackTrace;
    string errorInfoDB =
       "||Error Location: " + ctx.Request.Url.ToString() +
       "||Error Source: " + exception.Source +
       "||Error Try/Catch: " + exception.InnerException +
       "||Error Info: " + exception.Message +
       "||HttpErrorCode: " + httpCode +
       "||Stack trace: " + exception.StackTrace +
       "||IP Address: " + ipAddress_s;

    // clean the input befor you put it in the DB
    char quote = (char)34;
    char filler = (char)124;
    char tick = (char)39;
    char greaterThan = (char)60;
    char lessThan = (char)62;
    errorInfo = errorInfo.Replace(quote, filler);
    errorInfo = errorInfo.Replace(tick, filler);
    errorInfo = errorInfo.Replace(greaterThan, filler);
    errorInfo = errorInfo.Replace(lessThan, filler);

    errorInfoDB = errorInfoDB.Replace(quote, filler);
    errorInfoDB = errorInfoDB.Replace(tick, filler);
    errorInfoDB = errorInfoDB.Replace(greaterThan, filler);
    errorInfoDB = errorInfoDB.Replace(lessThan, filler);

    string pattern = string.Empty;
    string replacement = "sQueEl";
    pattern = "/cookie|SELECT|UPDATE|INSERT|INTO|DELETE|FROM|NOT IN|WHERE|TABLE|DROP|script*/ig";
    errorInfoDB = Regex.Replace(errorInfoDB, pattern, replacement);

    pattern = "/cookie|select|update|insert|into|delete|from|not in|where|table|drop|script*/ig";
    errorInfoDB = Regex.Replace(errorInfoDB, pattern, replacement);


    if (httpCode == 404)
    {
        InSert_To_DB_Class(*****, *****, *****, *****, *****, errorInfoDB);
    }
    else
    {
        InSert_To_DB_Class(*****, *****, *****, *****, *****, errorInfoDB);
    }

    // set the error info to the session variable to display to the allowed users
    Application["AppError"] = errorInfo;

    // clear the error now that is has been stored to a session
    ctx.Server.ClearError();
    ctx.Response.ClearHeaders();
    // set the status code so we can return it for SEO
    ctx.Response.StatusCode = httpCode;
    ctx.Response.TrySkipIisCustomErrors = true;
    HttpApplication myApplication = new HttpApplication();
    myApplication.Response.TrySkipIisCustomErrors = true;
    try
    {
        if (ctx.Request.RawUrl.Contains("/*****"))
        {
            // redirect to the error page
            ctx.Server.Transfer("~/*****.aspx", false);
        }
        else if(ctx.Request.RawUrl.Contains("/*****"))
        {
            ctx.Server.Transfer("~/*****/*****.aspx", false);
        }
        else
        {
            // check the httpCode
            if (httpCode == 404)
            {
                // set the page name they were trying to find to a session variable
                // this will be cleared in the ****** page
                Application["404_page"] = exception.Message; 
                // redirect to the 404 page
                ctx.Server.Transfer("~/*****", false);
            }
            else
            {
                // redirect to the error page
                ctx.Server.Transfer("~/*****", false);
            }
        }
    }
}

Answer 1

从评论到失望先生:

谢谢,我正在使用IIS 7本地和IIS 7.5.当你找到这些材料时,请告诉我.

如果您的应用程序在配置为以经典管道模式运行的应用程序池中运行,则不适用于ASP.NET的内容将不会访问ASP.NET运行时.即不存在的文件夹.这些将由IIS直接处理.

你有几个选择:

1. 将应用程序池设置为Integrated Pipeline模式.如果IIS的错误处理从ASP.NET""占用"ASP.NET 404和500状态代码,则可能还需要配置以下设置:

   <configuration>
     <system.webServer>
       <httpErrors existingResponse="PassThrough" />
     </system.webServer>
   </configuration>
   

2. 如果应用程序在"集成管道"模式下表现不佳,但您只关心为404响应显示页面,请配置以下内容:

   <system.webServer>
     <httpErrors>
       <remove statusCode="404" subStatusCode="-1" />
       <error statusCode="404" prefixLanguageFilePath="" 
              path="/404.aspx" responseMode="ExecuteURL" />
     </httpErrors>
   </system.webServer>
   

   您需要404在页面中设置状态代码,否则它只会返回一个200.

   如果您使用静态页面,例如:

   <error statusCode="404" prefixLanguageFilePath="" 
          path="404.html" responseMode="File" />
   

   这将返回一个404.

3. 如果应用程序在"集成管道"模式下表现不佳并且您绝对必须通过错误处理程序传递404错误,那么您可能必须手动将通配符内容映射到ASP.NET HttpHandler,以便此类请求确实可以访问管道.这将是次优解决方案.