ASP.NET MVC 4 - 异常处理不工作 [英] ASP.NET MVC 4 - Exception Handling Not Working
问题描述
当我在ASP.NET MVC应用4时发生错误，我想自定义视图根据错误的类型用户。例如，找不到网页或发生异常（有有关异常的一些人性化的细节）。我已经检查了如何做到这一点的计算器和其他在线资源的其他例子，但是没有答案都为我工作。
When an error occurs in my ASP.NET MVC 4 application, I would like to customize a view for the user depending on the type of error. For example, page not found or an exception has occurred (with some user-friendly details about the exception). I've checked other examples of how to do this on StackOverflow and other online sources, but none of the answers are working for me.
基本[的HandleError]属性似乎没有在VS2012是工作与MVC 4应用程序针对.NET 4.5。这里是code我在我家的控制器：
The basic [HandleError] attribute does not seem to be working in VS2012 with an MVC 4 application targeting .NET 4.5. Here is the code I have in my home controller:
[HandleError]
public ActionResult Index()
{
Response.TrySkipIisCustomErrors = true; //doesn't work with or without this
throw new NullReferenceException("Uh oh, something broke.");
}
这仅仅是抛出一个异常，而我期望默认的〜/共享/ Error.cshtml视图，因为[的HandleError]属性被退回，但我得到的是一个HTTP表明页面500内部服务器错误不能显示。我检查了我的web.config，和不同的配置似乎表现怪异。在节中，目前包含：
It is just throwing an exception, and I would expect the default ~/Shared/Error.cshtml view to be returned because of the [HandleError] attribute, but all I get is an HTTP 500 Internal Server Error indicating that the page could not be displayed. I checked my web.config, and different configurations seem to be behaving weird. In the section, it currently contains:
<customErrors mode="On" />
（我尝试添加的defaultRedirect和模式的customErrors =关，以及，但没有任何效果......无论是共享的错误观点或CustomError认为我有被渲染。如果我改变的customErrors模式关闭，然后我可以看到异常的详细信息如预期，因此它被扔嗯哦，爆出的东西异常正确。
(I've tried adding defaultRedirect and with customErrors mode="Off" as well but that didn't have any effect... neither the shared Error view or the CustomError view I have is being rendered. If I change customErrors mode to off, then I can see the exception details as expected, so it is throwing the "Uh oh, something broke" exception properly.
我也尝试添加onException的处理程序HomeController的，虽然我可以通过调试和看到onException的事件被提出，它没有任何区别：
I've also tried adding an OnException handler to the HomeController, and although I can debug through and see that the OnException event is being raised, it doesn't make any difference:
protected override void OnException(ExceptionContext filterContext)
{
base.OnException(filterContext);
filterContext.ExceptionHandled = true;
if (filterContext == null)
{
filterContext.Result = View("CustomError");
return;
}
Exception e = filterContext.Exception;
// TODO: Log the exception here
ViewData["Exception"] = e; // pass the exception to the view
filterContext.Result = View("CustomError");
}
我也试图改变[的HandleError]指定一个观点，但似乎并不要么做什么：
I have also tried changing [HandleError] to specify a view, but that doesn't seem to do anything either:
[HandleError(View="CustomError")]
任何帮助将是非常美联社preciated。请让我知道如果你需要任何更多的细节。
Any help would be much appreciated. Please let me know if you need any more details.
推荐答案
我似乎记得，你必须从一个非本地主机的IP地址（通常在另一台计算机）调用的页面。而且它必须是一个基于IIS服务器，而不是内置的开发服务器（所以IIS或IIS防爆preSS，但你必须配置IIS防爆preSS外部访问，这是一种痛苦）。
I seem to recall that you had to call the page from a non-localhost IP address (typically another computer). And it has to be an IIS based server, not the built-in development server (so IIS or IIS Express, but then you have to configure IIS Express for external access, which is a pain).
您其实可以调试它，你必须要调试的计算机上配置本地服务器接受外部请求，然后从远程服务器调用本地服务器。
You can in fact debug it, you have to configure your local server on your debug computer to accept external requests, then call your local server from the remote server.
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