c# – 客户端没有从ApiController接收自定义HttpResponseException

2023年9月5日 230次阅读

我为我的Web API控制器操作创建了一个异常过滤器,但它似乎没有做任何事情(即使它被调用).

属性

public class ExceptionHandlerAttribute : ExceptionFilterAttribute
{
    public override void OnException(HttpActionExecutedContext context)
    {
        context.Response = new HttpResponseMessage(HttpStatusCode.BadRequest);
        context.Response.Content = new StringContent("My content");
        context.Response.ReasonPhrase = "My reason";
    }
}

我也尝试过：

public override void OnException(HttpActionExecutedContext context)
{
    throw new HttpResponseException(
        new HttpResponseMessage(HttpStatusCode.BadRequest)
        {
            Content = new StringContent("The content"),
            ReasonPhrase = "The reason"
        });
}

调节器

[ExceptionHandler]
public class MyController : ApiController
{
    [Route("MyRoute"), HttpGet]
    public MyModel Index() {
        // code causing exception
    }
}

WebApiConfig

public static class WebApiConfig
{
    public static void Register(HttpConfiguration config)
    {
        config.Filters.Add(new ExceptionHandlerAttribute());
    }
}

但是,当发生异常时,客户端会收到以下信息：

最佳答案 您需要使用异常过滤器的响应抛出HttpResponseException：

public override void OnException(HttpActionExecutedContext context)
{
    throw new HttpResponseException(
        new HttpResponseMessage(HttpStatusCode.BadRequest)
        {
            Content = new StringContent("The content"),
            ReasonPhrase = "The reason"
        });
}

这里有关于how to handle exceptions in Web API的更多细节.

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