106

如何在asp.net MVC Preview 5中使用 [HandleError] 过滤器？
我在我的Web.config文件中设置了customErrors

<customErrors mode="On" defaultRedirect="Error.aspx">
  <error statusCode="403" redirect="NoAccess.htm"/>
  <error statusCode="404" redirect="FileNotFound.htm"/>
</customErrors>

并将[HandleError]放在我的Controller类上面，如下所示：

[HandleError]
public class DSWebsiteController: Controller
{
    [snip]
    public ActionResult CrashTest()
    {
        throw new Exception("Oh Noes!");
    }
}

然后我让我的控制器从这个类继承并在它们上调用CrashTest（） . 视觉工作室在错误时停止并按下f5继续后，我被重新路由到Error.aspx？aspxerrorpath = / sxi.mvc / CrashTest（其中sxi是所用控制器的名称 . 当然道路无法找到，我得到“'''应用程序中的服务器错误 . ”404 .

这个站点从预览3移植到5.除了错误处理之外，所有东西都运行（没有太多工作要移植） . 当我创建一个完整的新项目时，错误处理似乎有效 .

想法？

--Note--
由于这个问题现在有超过3K的视图，我认为放入我目前使用的（ASP.NET MVC 1.0）是有益的 . 在mvc contrib project中有一个名为"RescueAttribute"的辉煌属性你也应该检查一下;）

6 回答

14
```
[HandleError]
```
当你只为你的类提供HandleError属性时（或者你的动作方法），当发生未处理的异常时，MVC将首先在Controller的View文件夹中查找名为“Error”的相应视图 . 如果它找不到它，那么它将继续查看共享视图文件夹（默认情况下应该包含Error.aspx文件）
```
[HandleError(ExceptionType = typeof(SqlException), View = "DatabaseError")]
[HandleError(ExceptionType = typeof(NullReferenceException), View = "LameErrorHandling")]
```
您还可以使用有关所查找的异常类型的特定信息来堆叠其他属性 . 此时，您可以将错误定向到默认“错误”视图以外的特定视图 .

有关更多信息，请查看Scott Guthrie's blog post .
回复于 2024-05-20T13:24:14+08:00
23

还应注意，未将http错误代码设置为500的错误

（例如UnauthorizedAccessException）

HandleError过滤器不会处理 .

回复于 2024-05-20T13:24:14+08:00

-1

MVC中的属性在 get and post 方法的错误处理中非常有用，它也跟踪 ajax call .

在应用程序中创建一个基本控制器，并在主控制器（EmployeeController）中继承它 .

public class EmployeeController : BaseController

在基本控制器中添加以下代码 .

/// <summary>
/// Base Controller
/// </summary>
public class BaseController : Controller
{       
    protected override void OnException(ExceptionContext filterContext)
    {
        Exception ex = filterContext.Exception;

        //Save error log in file
        if (ConfigurationManager.AppSettings["SaveErrorLog"].ToString().Trim().ToUpper() == "TRUE")
        {
            SaveErrorLog(ex, filterContext);
        }

        // if the request is AJAX return JSON else view.
        if (IsAjax(filterContext))
        {
            //Because its a exception raised after ajax invocation
            //Lets return Json
            filterContext.Result = new JsonResult()
            {
                Data = Convert.ToString(filterContext.Exception),
                JsonRequestBehavior = JsonRequestBehavior.AllowGet
            };
        }
        else
        {
            filterContext.ExceptionHandled = true;
            filterContext.HttpContext.Response.Clear();

            filterContext.Result = new ViewResult()
            {
                //Error page to load
                ViewName = "Error",
                ViewData = new ViewDataDictionary()
            };

            base.OnException(filterContext);
        }
    }

    /// <summary>
    /// Determines whether the specified filter context is ajax.
    /// </summary>
    /// <param name="filterContext">The filter context.</param>
    private bool IsAjax(ExceptionContext filterContext)
    {
        return filterContext.HttpContext.Request.Headers["X-Requested-With"] == "XMLHttpRequest";
    }

    /// <summary>
    /// Saves the error log.
    /// </summary>
    /// <param name="ex">The ex.</param>
    /// <param name="filterContext">The filter context.</param>
    void SaveErrorLog(Exception ex, ExceptionContext filterContext)
    {
        string logMessage = ex.ToString();

        string logDirectory = Server.MapPath(Url.Content("~/ErrorLog/"));

        DateTime currentDateTime = DateTime.Now;
        string currentDateTimeString = currentDateTime.ToString();
        CheckCreateLogDirectory(logDirectory);
        string logLine = BuildLogLine(currentDateTime, logMessage, filterContext);
        logDirectory = (logDirectory + "\\Log_" + LogFileName(DateTime.Now) + ".txt");

        StreamWriter streamWriter = null;
        try
        {
            streamWriter = new StreamWriter(logDirectory, true);
            streamWriter.WriteLine(logLine);
        }
        catch
        {
        }
        finally
        {
            if (streamWriter != null)
            {
                streamWriter.Close();
            }
        }
    }

    /// <summary>
    /// Checks the create log directory.
    /// </summary>
    /// <param name="logPath">The log path.</param>
    bool CheckCreateLogDirectory(string logPath)
    {
        bool loggingDirectoryExists = false;
        DirectoryInfo directoryInfo = new DirectoryInfo(logPath);
        if (directoryInfo.Exists)
        {
            loggingDirectoryExists = true;
        }
        else
        {
            try
            {
                Directory.CreateDirectory(logPath);
                loggingDirectoryExists = true;
            }
            catch
            {
            }
        }

        return loggingDirectoryExists;
    }

    /// <summary>
    /// Builds the log line.
    /// </summary>
    /// <param name="currentDateTime">The current date time.</param>
    /// <param name="logMessage">The log message.</param>
    /// <param name="filterContext">The filter context.</param>       
    string BuildLogLine(DateTime currentDateTime, string logMessage, ExceptionContext filterContext)
    {
        string controllerName = filterContext.RouteData.Values["Controller"].ToString();
        string actionName = filterContext.RouteData.Values["Action"].ToString();

        RouteValueDictionary paramList = ((System.Web.Routing.Route)(filterContext.RouteData.Route)).Defaults;
        if (paramList != null)
        {
            paramList.Remove("Controller");
            paramList.Remove("Action");
        }

        StringBuilder loglineStringBuilder = new StringBuilder();

        loglineStringBuilder.Append("Log Time : ");
        loglineStringBuilder.Append(LogFileEntryDateTime(currentDateTime));
        loglineStringBuilder.Append(System.Environment.NewLine);

        loglineStringBuilder.Append("Username : ");
        loglineStringBuilder.Append(Session["LogedInUserName"]);
        loglineStringBuilder.Append(System.Environment.NewLine);

        loglineStringBuilder.Append("ControllerName : ");
        loglineStringBuilder.Append(controllerName);
        loglineStringBuilder.Append(System.Environment.NewLine);

        loglineStringBuilder.Append("ActionName : ");
        loglineStringBuilder.Append(actionName);
        loglineStringBuilder.Append(System.Environment.NewLine);

        loglineStringBuilder.Append("----------------------------------------------------------------------------------------------------------");
        loglineStringBuilder.Append(System.Environment.NewLine);

        loglineStringBuilder.Append(logMessage);
        loglineStringBuilder.Append(System.Environment.NewLine);
        loglineStringBuilder.Append("==========================================================================================================");

        return loglineStringBuilder.ToString();
    }

    /// <summary>
    /// Logs the file entry date time.
    /// </summary>
    /// <param name="currentDateTime">The current date time.</param>
    string LogFileEntryDateTime(DateTime currentDateTime)
    {
        return currentDateTime.ToString("dd-MMM-yyyy HH:mm:ss");
    }

    /// <summary>
    /// Logs the name of the file.
    /// </summary>
    /// <param name="currentDateTime">The current date time.</param>
    string LogFileName(DateTime currentDateTime)
    {
        return currentDateTime.ToString("dd_MMM_yyyy");
    }

}

================================================

Finds the Directory : Root/App_Start/FilterConfig.cs

添加以下代码：

/// <summary>
/// Filter Config
/// </summary>
public class FilterConfig
{
    /// <summary>
    /// Registers the global filters.
    /// </summary>
    /// <param name="filters">The filters.</param>
    public static void RegisterGlobalFilters(GlobalFilterCollection filters)
    {
        filters.Add(new HandleErrorAttribute());
    }
}

Track AJAX Error:

在布局页面加载中调用CheckAJAXError函数 .

function CheckAJAXError() {
    $(document).ajaxError(function (event, jqXHR, ajaxSettings, thrownError) {

        var ex;
        if (String(thrownError).toUpperCase() == "LOGIN") {
            var url = '@Url.Action("Login", "Login")';
            window.location = url;
        }
        else if (String(jqXHR.responseText).toUpperCase().indexOf("THE DELETE STATEMENT CONFLICTED WITH THE REFERENCE CONSTRAINT") >= 0) {

            toastr.error('ReferanceExistMessage');
        }
        else if (String(thrownError).toUpperCase() == "INTERNAL SERVER ERROR") {
            ex = ajaxSettings.url;
            //var url = '@Url.Action("ErrorLog", "Home")?exurl=' + ex;
            var url = '@Url.Action("ErrorLog", "Home")';
            window.location = url;
        }
    });
};

回复于 2024-05-20T13:24:14+08:00

155

将http错误代码解为500这是一个名为[ERROR]的属性，将其置于一个动作上

public class Error: System.Web.Mvc.HandleErrorAttribute
{
    public override void OnException(System.Web.Mvc.ExceptionContext filterContext)
    {

            if (filterContext.HttpContext.IsCustomErrorEnabled)
            {
                filterContext.ExceptionHandled = true;

            }
            base.OnException(filterContext);
            //OVERRIDE THE 500 ERROR  
           filterContext.HttpContext.Response.StatusCode = 200;
    }

    private static void RaiseErrorSignal(Exception e)
    {
        var context = HttpContext.Current;
      // using.Elmah.ErrorSignal.FromContext(context).Raise(e, context);
    } 

}

//例：

[Error]
[HandleError]
[PopulateSiteMap(SiteMapName="Mifel1", ViewDataKey="Mifel1")]
public class ApplicationController : Controller
{
}

回复于 2024-05-20T13:24:14+08:00

4

您缺少Error.aspx :)在预览5中，它位于您的Views / Shared文件夹中 . 只需从新的预览5项目中复制它 .

回复于 2024-05-20T13:24:14+08:00

[HandleError]
    public class ErrorController : Controller
    {        
        [AcceptVerbs(HttpVerbs.Get)]
        public ViewResult NotAuthorized()
        {
            //401
            Response.StatusCode = (int)HttpStatusCode.Unauthorized;

        return View();
    }

    [AcceptVerbs(HttpVerbs.Get)]
    public ViewResult Forbidden()
    {
        //403
        Response.StatusCode = (int)HttpStatusCode.Forbidden;

        return View();
    }

    [AcceptVerbs(HttpVerbs.Get)]
    public ViewResult NotFound()
    {
        //404
        Response.StatusCode = (int)HttpStatusCode.NotFound;
        return View();
    }

    public ViewResult ServerError()
    {
        //500
        Response.StatusCode = (int)HttpStatusCode.NotFound;
        return View();
    }

}

回复于 2024-05-20T13:24:14+08:00

ASP.NET MVC HandleError

6 回答

在基本控制器中添加以下代码 .

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