我正在开发 Web 应用程序,这是我处理异常的方式:
void Application_Error(object sender, EventArgs e)
{
Exception ex = Server.GetLastError();
LogManager.GetCurrentClassLogger().Error(ex);
Response.Clear();
Server.ClearError();
HttpException httpEx = ex as HttpException;
if (httpEx == null)
httpEx = new HttpException(400, ex.Message, ex);
RouteData routeData = new RouteData();
routeData.Values.Add("controller", "Error");
routeData.Values.Add("action", "Handler");
routeData.Values.Add("exception", httpEx);
Response.TrySkipIisCustomErrors = true;
var rc = new RequestContext(new HttpContextWrapper(Context), routeData);
var c = ControllerBuilder.Current.GetControllerFactory().CreateController(rc, "Error");
c.Execute(rc);
}
当发生异常时(例如:),throw new ArgumentException("Generator with given Id does not exist.");
用户会收到错误视图,其中包含有关发生情况的详细信息。
问题是,错误消息不会在 HttpResponseMessage 中发送给用户(作为 ReasonPhrase 或其他任何东西)。
private async void DeleteGenerator(Guid id)
{
var response = await dataService.RemoveGenerator(id);
if ((int)response.StatusCode >= 300)
MessageBox.Show( /* Error message from response */ );
}
在这里我应该收到盒子"Generator with given [...]"
,但我不知道如何实现。我已经尝试过了,但是缺少“HttpError”,但是我真的不知道如何将它实现到我的代码中(如何通过 Application_Error 发送实际的 HttpResponseMessage),但是我再次不知道应该如何更改它.
编辑
这是我的常规错误处理程序控制器:
public ActionResult Handler(HttpException exception)
{
Response.ContentType = "text/html";
if (exception != null)
{
Response.StatusCode = exception.GetHttpCode();
ViewBag.StatusString = (HttpStatusCode)exception.GetHttpCode();
return View("Handler", exception);
}
return View("Internal");
}
而且我已经出于测试目的尝试过此操作,但它也无法正常工作(客户端收到HttpResponseMessage
“错误请求”为ReasonPhrase
.
public HttpResponseMessage Handler(HttpException exception)
{
Response.ContentType = "text/html";
if (exception != null)
{
return new HttpResponseMessage
{
Content = new StringContent("[]", new UTF8Encoding(), "application/json"),
StatusCode = HttpStatusCode.NotFound,
ReasonPhrase = "TEST"
};
}
return null;
}