为什么ASP.NET MVC 3的例外是'处理'两次？ [英] Why are ASP.NET MVC 3 exceptions being 'handled' twice?
问题描述
我已经用下面code。我不知道为什么它在调用视图两次实施异常处理。
I have implemented exception handling using below code. I do not know why it is calling view twice.
Basecontroller
Basecontroller
public class BaseController : Controller
{
protected override void OnException(ExceptionContext filterContext)
{
if (filterContext.HttpContext.IsCustomErrorEnabled)
{
filterContext.ExceptionHandled = true;
if (filterContext.Exception.GetType() == typeof(ArgumentOutOfRangeException))
{
this.View("OutOfRange").ExecuteResult(this.ControllerContext);
}
else
{
this.View("Error").ExecuteResult(this.ControllerContext);
}
}
base.OnException(filterContext);
}
}
HomeController的
HomeController
public class HomeController : BaseController
{
public ActionResult Exception2()
{
throw (new ArgumentOutOfRangeException());
}
public ActionResult Exception3()
{
throw (new Exception());
}
}
错误查看（只共享文件夹）
Error View (Shared folder only)
@model System.Web.Mvc.HandleErrorInfo
@{
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<title>Error</title>
</head>
<body>
<h2>
Sorry, an error occurred while processing your request.
</h2>
<h3>
@if (Model != null)
{
<p>@Model.Exception.GetType().Name<br />
thrown in @Model.ControllerName @Model.ActionName</p>
<br />
@Model.Exception
}
</h3>
</body>
</html>
OutOfRange视图（仅适用于共享文件夹）
OutOfRange view (Shared folder only)
@{
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<title>OutOfRange Exception</title>
</head>
<body>
<div>
<h3>
@if (Model != null)
{
<p>@Model.Exception.GetType().Name<br />
thrown in @Model.ControllerName @Model.ActionName</p>
<br />
@Model.Exception
}
</h3>
</div>
</body>
</html>
执行网址：的http：// [域名] /主页/ Exception2
这是工作的罚款。
执行网址：的http：// [域名] /主页/ Exception3
这是不工作的罚款。你可以看到对不起，发生了错误处理您的请求。来了两次。当我调试使用上面的网址，被称为Error视图申请两次（第一次型号为NULL和第二次模型包含了一定的价值）。我想知道什么是错我的执行？
Here it is not working fine. You can see that "Sorry, an error occurred while processing your request." is coming twice. When I debugged the application using above URL, Error view called twice ( First time Model is null and second time Model contains some value). May I know what is wrong with my implementation?
推荐答案
您可以尝试：
- 删除默认
的HandleError全球行动过滤器从的Global.asax如果是present属性。当你创建一个新的ASP.NET MVC 3应用程序的默认模板注册到RegisterGlobalFilters方法内。所以注释掉注册这个属性就行了。 -
在你的web.config启用自定义错误：
- Remove the default
HandleErrorglobal action filter attribute from yourGlobal.asaxif it is present. When you create a new ASP.NET MVC 3 application the default template registers it inside theRegisterGlobalFiltersmethod. So comment out the line which registers this attribute. Enable custom errors in your web.config:
<customErrors mode="On" />
更新：
如果你想传递一个模式向 Error.cshtml 视图（因为它是强类型为 HandleErrorInfo ），你可以做到以下几点：
If you want to pass a model to the Error.cshtml view (as it is strongly typed to HandleErrorInfo) you could do the following:
else
{
string controllerName = filterContext.RouteData.GetRequiredString("controller");
string actionName = filterContext.RouteData.GetRequiredString("action");
var model = new HandleErrorInfo(filterContext.Exception, controllerName, actionName);
var result = new ViewResult
{
ViewName = "Error",
ViewData = new ViewDataDictionary<HandleErrorInfo>(model)
};
filterContext.Result = result;
}
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