Java獲取網絡主機信息

Java獲取網絡主機信息

 

 

java.net.InetAddress類表示互聯網協議 (IP) 地址。

有兩個子類： Inet4Address, Inet6Address

 

經過 InetAddress能夠方便獲取一個域名下的IP，也能夠獲取一個IP的主機名。

下面是例子，經過程序查看51cto主機的IP信息，51cto是不讓ping的。

 

代碼:

import java.io.IOException;
import java.net.InetAddress;

public class TestInetAddress {
         public static void main(String[] args) throws IOException {
                test();
        }

         public static void test() throws IOException {
                 //獲取本機的IP地址
                InetAddress address1 = InetAddress.getLocalHost();
                System.out.println(address1.getHostAddress());
                System.out.println(address1.toString());

                System.out.println( "---------------");
                 //獲取51cot的IP地址
                InetAddress address2 = InetAddress.getByName( "www.51cto.com");
                System.out.println( "getHostAddress:\t" + address2.getHostAddress());
                System.out.println( "getHostName:\t" + address2.getHostName());
                System.out.println( "---------------");
                 //獲取我博客的IP地址
                InetAddress address3 = InetAddress.getByName( "lavasoft.blog.51cto.com");
                System.out.println( "getHostAddress:\t" + address3.getHostAddress());
                System.out.println( "getHostName:\t" + address3.getHostName());
                 //直接用ip地址構建
                System.out.println(InetAddress.getByName( "211.103.156.224"));

                System.out.println( "---------------");
                 //獲取[url]www.google.com[/url]域名下全部的IP地址
//                InetAddress[] address4 = InetAddress.getAllByName("www.microsoft.com");
                InetAddress[] address4 = InetAddress.getAllByName( "www.google.com");
                 for (InetAddress address : address4) {
//                                System.out.println(address.getHostAddress());
                        System.out.println(address);
                }

                InetAddress address5 = InetAddress.getByName( "211.103.156.229");
                System.out.println(address5.isReachable(10));
        }
}

 

運行輸出結果：

192.168.1.2
lavasoft/192.168.1.2
---------------
getHostAddress:  211.103.156.229
getHostName:  [url]www.51cto.com[/url]
---------------
getHostAddress:  211.103.156.224
getHostName:  lavasoft.blog.51cto.com
/211.103.156.224
---------------
[url]www.google.com/64.233.189.99[/url]
[url]www.google.com/64.233.189.104[/url]
[url]www.google.com/64.233.189.147[/url]
false Process finished with exit code 0