VB.NET URL(域名)转IP地址
作者:admin 日期:2022-05-13
什么是“URL”?
我在脑中快速回忆着,对了!URL即 Uniform Resource Locator的缩写,翻译成中文便是“统一资源定位符”。因为互联网世界存在着不计其数的资源,每一处资源都需要有一个标记来定位它,正如人类城市中的门牌号。
什么是IP?
IP即Internet Protocol的缩写,中文译为“互联网协议”,一个如雷贯耳的名字,互联网的基石之一,一切依赖互联网通信的软件都得遵循这个协议。
好了!既然了解了它们是什么.那么我们就直接上代码吧!
方法一,代码思路(可以指定dns服务器):
通过CMD -> nslookup vbee.xyz 8.8.8.8 -> 获取到IP地址然后解析文本即可!思路非常简单!
方法一,参考代码:
Public Class Cls_cmd Private addr As String Private dnss As String ''初始化类传递地址,dns Public Sub New(ByVal address As String, ByVal dns As String) addr = address.ToUpper.Replace("HTTP://", "").Replace("HTTPS://", "").Split("/")(0) dnss = dns End Sub ''获取cmd输出字符串 Private Function Get_cmd() As String Try Dim p As New Process() p.StartInfo.FileName = "cmd.exe" p.StartInfo.UseShellExecute = False p.StartInfo.RedirectStandardInput = True p.StartInfo.RedirectStandardOutput = True p.StartInfo.RedirectStandardError = True p.StartInfo.CreateNoWindow = True p.StartInfo.WindowStyle = ProcessWindowStyle.Normal p.Start() p.StandardInput.WriteLine($"nslookup {addr.ToLower} {dnss}") p.StandardInput.WriteLine("exit") p.StandardInput.AutoFlush = True Dim strOuput As String = p.StandardOutput.ReadToEnd() p.WaitForExit() p.Close() Return strOuput Catch Return String.Empty End Try End Function ''分析取出IP地址,只取出第一条IP地址 Public Function Get_ip() As String Try Dim temp As String = Get_cmd() Dim arr As Array = temp.Split(vbCrLf) Dim tmp As String = String.Empty For Each xl In arr If xl Like "*Addresses:*" Then tmp = xl.ToString.Replace(" ", "").Split(":")(1) ElseIf xl Like "*Address:*" And Not xl Like "*" & dnss & "*" Then tmp = xl.ToString.Replace(" ", "").Split(":")(1) End If Next Return tmp Catch Return String.Empty End Try End Function End Class
方法2:直接通过 .NET类实现(不能指定dns)
Public Function Get_ip(ByVal address As String) As String Try Dim host As String = address.ToUpper.Replace("HTTP://", "").Replace("HTTPS://", "").Split("/")(0) Dim hostInfo As Net.IPAddress() = Net.Dns.GetHostAddresses(host) Return hostInfo.ToArray(0).ToString Catch Return String.Empty End Try End Function
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