Java获取网络主机信息

Java获取网络主机信息

 

 

java.net.InetAddress类表示互联网协议 (IP) 地址。

有两个子类： Inet4Address, Inet6Address

 

通过 InetAddress可以方便获取一个域名下的IP，也可以获取一个IP的主机名。

下面是例子，通过程序查看51cto主机的IP信息，51cto是不让ping的。

 

代码:

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 {
                 //获取本机的IP地址
                InetAddress address1 = InetAddress.getLocalHost();
                System.out.println(address1.getHostAddress());
                System.out.println(address1.toString());

                System.out.println( "---------------");
                 //获取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( "---------------");
                 //获取我博客的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地址构建
                System.out.println(InetAddress.getByName( "211.103.156.224"));

                System.out.println( "---------------");
                 //获取[url]www.google.com[/url]域名下所有的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));
        }
}

 

运行输出结果：

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

本文出自 “熔 岩” 博客，转载请与作者联系！