MVC HttpRequestValidationException 异常 [英] MVC HttpRequestValidationException exception
问题描述
我正在编写一个 MVC 5 互联网应用程序,并且有一个关于 HttpRequestValidationException
异常的问题.
I am coding a MVC 5 internet application and have a question in regards to the HttpRequestValidationException
exception.
我之前在控制器中的代码如下:
My previous code in my controller is as follows:
protected override void OnException(ExceptionContext filterContext)
{
// Make use of the exception later
this.Session["ErrorException"] = filterContext.Exception;
if (filterContext.Exception is HttpRequestValidationException)
{
TempData["UITitle"] = "Validation";
TempData["UIHeading"] = customErrorType;
TempData["UIMessage"] = filterContext.Exception.Message;
TempData["UIException"] = filterContext.Exception;
filterContext.ExceptionHandled = true;
}
else
{
TempData["UITitle"] = "Error";
TempData["UIHeading"] = customErrorType;
TempData["UIMessage"] = filterContext.Exception.Message;
TempData["UIException"] = filterContext.Exception;
}
filterContext.Result = this.RedirectToAction("Index", "Error");
base.OnException(filterContext);
}
如果发生异常,则错误控制器中的索引视图会显示此错误.我现在编写了以下全局过滤器:
If an exception occurred, then the Index view in the Error controller displayed this error. I have now written the following global filter:
public class ExceptionFilterDisplayErrorView : IExceptionFilter
{
public virtual void OnException(ExceptionContext filterContext)
{
filterContext.ExceptionHandled = true;
RouteValueDictionary routeValueDictionary = new RouteValueDictionary();
routeValueDictionary.Add("controller", "Error");
routeValueDictionary.Add("action", "Index");
filterContext.Controller.TempData.Clear();
filterContext.Controller.TempData.Add("UITitle", "Error");
filterContext.Controller.TempData.Add("UIHeading", "Error");
filterContext.Controller.TempData.Add("UIMessage", filterContext.Exception.Message);
filterContext.Controller.TempData.Add("UIException", filterContext.Exception);
RedirectToRouteResult redirectToRouteResult = new RedirectToRouteResult(routeValueDictionary);
filterContext.Result = redirectToRouteResult;
}
}
上面的过滤器和前面的 OnException
函数的工作原理一样,除了现在,如果发生 HttpRequestValidationException
异常,将显示默认的堆栈跟踪页面,而不是错误控制器视图.
The above filter works the same as the previous OnException
function, except now, if a HttpRequestValidationException
exception occurs, the default stack trace page is shown, rather than the Error controller view.
是否可以在异常过滤器中为 HttpRequestValidationException
异常显示自定义错误视图?
Is it possible to display a custom error view for HttpRequestValidationException
exceptions in an exception filter?
推荐答案
这样的事情对我有用.
public class CustomExceptionAttribute : FilterAttribute, IExceptionFilter
{
public void OnException(ExceptionContext filterContext)
{
if (!filterContext.ExceptionHandled)
{
int val = (int)(((Exception)filterContext.Exception).ActualValue);
filterContext.Result = new ViewResult
{
ViewName = "CustomError",
ViewData = new ViewDataDictionary<int>(val)
};
filterContext.ExceptionHandled = true;
}
}
}
** 编辑 ***
public class HttpRequestValidationExceptionAttribute : FilterAttribute, IExceptionFilter
{
public void OnException(ExceptionContext filterContext)
{
if (!filterContext.ExceptionHandled && filterContext.Exception is HttpRequestValidationException)
{
IDictionary val = filterContext.Exception.Data;
filterContext.Result = new ViewResult
{
ViewName = "RangeError",
ViewData = new ViewDataDictionary<IDictionary>(val)
};
filterContext.ExceptionHandled = true;
}
}
}
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