ASP.NET API中Http状态代码的自定义异常 [英] Custom exceptions to Http status codes in ASP.NET API
问题描述
我在业务层中有几个自定义异常,这些异常会在我的ASP.NET应用程序中冒充到我的API方法。
I have a couple of custom exceptions in my business layer that bubble up to my API methods in my ASP.NET application.
当前,它们都转换为Http状态500。如何映射这些自定义异常,以便可以返回不同的Http状态代码?
Currently, they all translate to Http status 500. How do I map these custom exceptions so that I could return different Http status codes?
推荐答案
使用< a href = https://msdn.microsoft.com/zh-cn/library/system.web.httpresponse.statuscode.aspx rel = noreferrer> Response.StatusCode 设置和获取方法。
本地异常处理:对于本地操作异常处理,请将以下内容放入调用代码中。
Local Exception handling: For local action exception handling, put the following inside the calling code.
var responseCode = Response.StatusCode;
try
{
// Exception was called
}
catch (BusinessLayerException1)
{
responseCode = 201
}
catch (BusinessLayerException2)
{
responseCode = 202
}
Response.StatusCode = responseCode;
关于跨控制器行为:您应遵循以下步骤。
- 创建抽象BaseController
- 使您当前的Controller继承自BaseController。
- 在BaseController中添加以下逻辑。
BaseController.cs
public abstract class BaseController : Controller
{
protected override void OnException(ExceptionContext filterContext)
{
var responseCode = Response.StatusCode;
var exception = filterContext.Exception;
switch (exception.GetType().ToString())
{
case "ArgumentNullException":
responseCode = 601;
break;
case "InvalidCastException":
responseCode = 602;
break;
}
Response.StatusCode = responseCode;
base.OnException(filterContext);
}
}
注意:
您还可以添加已处理的异常并将其重定向到其他 Controller / Action
filterContext.ExceptionHandled = true;
filterContext.Result = this.RedirectToAction("Index", "Error");
有关ASP.NET MVC的更多信息,可以找到此处
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