在控制器外部将httpResponseMessage转换为httpActionResult的最简单方法

“msdn”页面将帮助您: https://docs.microsoft.com/en-us/aspnet/web-api/overview/error-handling/web-api-global-error-handling

您需要一个全局错误处理程序。这是核心代码,您可以在msdn页面中找到详细信息。

class OopsExceptionHandler : ExceptionHandler
{
    public override void HandleCore(ExceptionHandlerContext context)
    {
        context.Result = new TextPlainErrorResult
        {
            Request = context.ExceptionContext.Request,
            Content = "Oops! Sorry! Something went wrong." +
                      "Please contact support@contoso.com so we can try to fix it."
        };
    }

    private class TextPlainErrorResult : IHttpActionResult
    {
        public HttpRequestMessage Request { get; set; }

        public string Content { get; set; }

        public Task<HttpResponseMessage> ExecuteAsync(CancellationToken cancellationToken)
        {
            HttpResponseMessage response = 
                             new HttpResponseMessage(HttpStatusCode.InternalServerError);
            response.Content = new StringContent(Content);
            response.RequestMessage = Request;
            return Task.FromResult(response);
        }
    }
}

顺便说一句,您应该提到MVC版本:

1. 在ASP.NET核心2中,IHttpactionResult替换为IActionResult:
2. exceptionhandlerContext位于system.web.http中,不再存在。 以下是详细信息: https://docs.microsoft.com/en-us/aspnet/core/migration/webapi?view=aspnetcore-2.1#migrate-models-and-controllers