Created
October 24, 2013 15:14
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複数のネットワークインターフェイスを持つホストのすべてのIPアドレスを取得する。
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// 複数のネットワークインターフェイスを持つホストもあるので、すべてのIPアドレスを取得する。 | |
import java.net.*; | |
public class GetIPAddress2 { | |
public static void main(String[] args) { | |
String server_name = "localhost"; | |
if (args.length > 0) { | |
server_name = args[0]; | |
} | |
try { | |
InetAddress[] ia = InetAddress.getAllByName(server_name); //重要 | |
for (int i=0; i<ia.length; i++) { | |
System.out.println("host name: " + ia[i].getHostName()); | |
System.out.println("IP address: " + ia[i].getHostAddress()); | |
} | |
} catch (java.io.IOException e) { | |
e.printStackTrace(); | |
return; | |
} | |
} | |
} | |
// 実行: | |
// % java GetIPAddress2 www.google.com | |
// host name: www.google.com | |
// IP address: 173.194.38.112 | |
// host name: www.google.com | |
// IP address: 173.194.38.113 | |
// host name: www.google.com | |
// IP address: 173.194.38.115 | |
// host name: www.google.com | |
// IP address: 173.194.38.114 | |
// host name: www.google.com | |
// IP address: 173.194.38.116 |
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