一个取得本地IP信息的类

一个取得本地IP信息的类

代码如下：

import  java.net.Inet4Address;
import  java.net.InetAddress;
import  java.net.NetworkInterface;
import  java.util.Enumeration;

/**
 * 此类用于取出本机的IP地址
 * 
 *  @author  何杨
 * @date 2009-11-5
 * @time 上午10:41:13
  */
public   class  IPAddrFetcher{
     public  String getIPInfo(){
        StringBuilder sb = new  StringBuilder();
        
         try {
            Enumeration < NetworkInterface >  interfaces = NetworkInterface.getNetworkInterfaces();
            
             while (interfaces.hasMoreElements()){
                NetworkInterface ni = interfaces.nextElement();
                
                sb.append( " Interface  " + ni.getName() + " :\r\n " );
                
                
                Enumeration < InetAddress >  inetAddresses = ni.getInetAddresses();
                
                 while (inetAddresses.hasMoreElements()){
                    InetAddress address = inetAddresses.nextElement();
                    
                    sb.append( " Address " );
                    
                     if (address  instanceof  Inet4Address){
                        sb.append( " (v4) " );
                    }
                     else {
                        sb.append( " (v6) " );
                    }
                    
                    sb.append( " :address= " + address.getHostAddress() + "  name= " + address.getHostName() + " \r\n " );
                }
            }
        } catch (Exception ex){
            ex.printStackTrace();
        }
                
         return  sb.toString();
    }
    
     public   static   void  main(String[] args){
        IPAddrFetcher iPAddrFetcher = new  IPAddrFetcher();
        System.out.println(iPAddrFetcher.getIPInfo());
    }
}