Question

我有一个 SUPPOSED 的功能来检查网址是否存在。

Function URLExists(URL As String) As Boolean
Dim HttpWebRequest_ As HttpWebRequest = WebRequest.Create(URL)
HttpWebRequest_.Method="HEAD" 'It doesn't work even without this.
Dim HttpWebResponse_ As HttpWebResponse = HttpWebRequest_.GetResponse()
Return HttpWebResponse_.StatusCode = HttpStatusCode.OK
End Function

如果我尝试URLExists（“http://www.google.com/thisPageDoesNotExistAndIsRetarded.html”），则返回True，如果我尝试URLExists（“https://www.google.com/”）（显然存在），则返回True，（正确）。感谢。

Answer 1

我不熟悉VB，但我写了一些c＃：

string url = "http://www.google.com/thisPageDoesNotExistAndIsRetarded.html";
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.Method = "HEAD";
HttpWebResponse response = (HttpWebResponse)request.GetResponse();

在[System.Net.WebException]运行时抛出GetResponse()（错误：404）。这是工作。

也许您可以尝试在方法中添加try{ } catch{ return false}。

检查URL是否存在不起作用

1 个答案: