Vb.net 如何从失败的webclient.downloadstring获取结果?
如果我们在服务器上使用webclient.downloadstring时出错,我们将一无所获Vb.net 如何从失败的webclient.downloadstring获取结果?,vb.net,Vb.net,如果我们在服务器上使用webclient.downloadstring时出错,我们将一无所获 Try result = webClient.DownloadString("https://api.bodis.com/domainclassification?domain=" + CurrentBlog.Domain) Catch ex As Exception System.Windows.Forms.Applica
Try
result = webClient.DownloadString("https://api.bodis.com/domainclassification?domain=" + CurrentBlog.Domain)
Catch ex As Exception
System.Windows.Forms.Application.DoEvents()
End Try
通常结果包含响应。但在出现错误的情况下,结果为空
我想知道一些事情。例如,即使结果不好,通常也会有一条自定义的404消息,等等
这个api.bodis.com是有问题的,因为它混合了安全和非安全的东西。但是,它在InternetExplorer中仍然提供输出。我想使用webclient,我想知道输出
获得ex.response不会产生任何结果
Dim adult = webClient.DownloadString("http://googleads.g.doubleclick.net/apps/domainpark/domainpark.cgi?callback=_google_json_callback&output=js&client=ca-dp-godaddy2_xml&domain_name=" + CurrentBlog.Domain)
'ias.NavigateTillComplete("https://api.bodis.com/domainclassification?domain=" + CurrentBlog.Domain)
Dim result = ""
Dim url = "http://api.bodis.com/domainclassification?domain=" + CurrentBlog.Domain
Dim webRequest = DirectCast(System.Net.HttpWebRequest.Create(url), System.Net.HttpWebRequest)
Dim response As HttpWebResponse
Try
response = DirectCast(webRequest.GetResponse(), HttpWebResponse)
Catch ex As System.Net.WebException
System.Windows.Forms.Application.DoEvents()
response = DirectCast(ex.Response, HttpWebResponse) 'is nothing there
End Try
Dim responseStream = response.GetResponseStream
试试,怎么试试?我应该如何修改该代码?>将Exception更改为WebException,并查看new
ex
是否包含帮助您识别案例中错误的属性。我不需要知道错误。我想知道你要找的服务器响应?