如果用户的上传时间超过 15 分钟,我们有一个图片上传页面会超时。
我们正在捕获超时发生的 HttpException。但是我们怎么知道异常是因为超时而发生的,所以我们可以返回一个特定的消息呢?
我们的代码:
try
{
// do stuff here
}
catch (HttpException ex)
{
// What can we check to know if this is a timeout exception?
// if (ex == TimeOutError)
// {
// return "Took too long. Please upload a smaller image.";
// }
return "Error with image. Try again.";
}
catch (Exception ex)
{
return "Error with image. Try again.";
}
超时错误是什么样的:
System.Web.HttpException (0x80004005): Request timed out.
at System.Web.HttpRequest.GetEntireRawContent()
at System.Web.HttpRequest.GetMultipartContent()
at System.Web.HttpRequest.FillInFormCollection()
at System.Web.HttpRequest.EnsureForm()
at System.Web.HttpRequest.get_Form()
at MyStore.upload.ProcessRequest(HttpContext context)
ex.ErrorCode=-2147467259
ex.GetHttpCode=500
ex.WebEventCode=0
我不愿简单地做一个if
比较上面错误代码的语句。
HttpCode500
似乎是一个通用Internal Server Error
代码,它可能发生的不仅仅是超时异常。
ErrorCode-2147467259
是我不熟悉的东西。如果该数字对于超时错误将保持不变,并且永远不会发生非超时异常,那么我可以if
对这个数字进行比较。
我认为必须有一种简单的方法来知道是否HttpException
是超时异常,例如:
if (ex == TimeoutError) // what should this be?
更新:
我刚刚尝试捕捉TimeoutException
,如下所示,但它仍然只被HttpException
.
try
{
// do stuff here
}
catch (TimeoutException ex)
{
// Timeout doesn't get caught. Must be a different type of timeout.
// So far, timeout is only caught by HttpException.
return "Took too long. Please upload a smaller image.";
}
catch (HttpException ex)
{
// What can we check to know if this is a timeout exception?
// if (ex == TimeOutError)
// {
// return "Took too long. Please upload a smaller image.";
// }
return "Error with image. Try again.";
}
catch (Exception ex)
{
return "Error with image. Try again.";
}