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ASP.Net MVC 3 - HandleError 属性中的顺序似乎向后工作？

发布于 2024-11-27 11:35:36 字数 1462 浏览 1 评论 0原文

问题：当我使用 HandleError 属性的 Order 属性时，首先应用最高订单号，如下所示反对最低的优先。

详细信息

我想设置我的控制器以这种方式处理异常：

如果异常的类型是 CustomException，请使用“CustomError”视图。
否则，使用默认的“错误”视图。

使用默认的 MVC 项目模板，我完成了以下操作：

从全局过滤器中删除了 HandleErrorAttribute。
在 web.config 中启用了自定义错误。

然后，我将这些属性添加到 HomeController 类中：

[HandleError(ExceptionType = typeof(Exception), View = "Error")]
[HandleError(ExceptionType = typeof(CustomException), View = "CustomError")]

这工作正常 - 如果抛出 CustomException，则会显示“CustomError”视图；如果抛出Exception，则会显示“Error”视图。

但是，我认为 HandleError 属性上的 Order 属性会让事情变得更加明确。来自 MSDN 页面< /a>：

整数值越大，过滤器的优先级越低是。

由此，我本以为以下代码会导致在所有情况下都显示“Error”视图：

[HandleError(Order = 1, ExceptionType = typeof(Exception), View = "Error")]
[HandleError(Order = 2, ExceptionType = typeof(CustomException), View = "CustomError")]

但事实并非如此；这会导致与未指定 Order 属性时相同的行为。如果我交换订单，this 会导致显示“错误”视图，即使抛出 CustomException 也是如此。

基本上，实际的顺序优先级似乎与文档完全相反。我做错了什么还是这是一个错误？

原文

Problem: When I use the Order property of the HandleError attribute, the highest order number gets applied first, as opposed to the lowest first.

Details

I want to set up my controller to handle exceptions in this way:

if the type of the exception is CustomException, use the "CustomError" view.
otherwise, use the default "Error" view.

Using the default MVC project template, I've done the following:

Removed the HandleErrorAttribute from the global filters.
Turned Custom Errors on in the web.config.

Then I add these attributes to the HomeController class:

[HandleError(ExceptionType = typeof(Exception), View = "Error")]
[HandleError(ExceptionType = typeof(CustomException), View = "CustomError")]

And this works fine - if a CustomException is thrown, the "CustomError" view is shown; if an Exception is thrown, the "Error" view is shown.

However, I thought the Order property on the HandleError attribute would make things more explicit. From the MSDN page:

The greater the integer value is, the lower the priority of the filter
is.

From this, I would have thought that the following code would cause the "Error" view to be shown in all circumstances:

[HandleError(Order = 1, ExceptionType = typeof(Exception), View = "Error")]
[HandleError(Order = 2, ExceptionType = typeof(CustomException), View = "CustomError")]

But this is not the case; this causes the same behaviour as when the Order property was not specified. If I swap the Orders around, this causes the "Error" view to be shown, even if a CustomException was thrown.

Basically, the actual order priority seems to be exactly the opposite of the documentation. Am I doing something wrong or is this a bug?

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