http://www.zuidaima.com/share/1909940378979328.htm

package com.ccssoft.omc.log4j;

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

public class HostData {

// 主机名称
public String hostName;
// 主机ip
public String ip;

public String getHostName() {
    return hostName;
}

public void setHostName(String hostName) {
    this.hostName = hostName;
}

public String getIp() {
    return ip;
}

public void setIp(String ip) {
    this.ip = ip;
}

public HostData() {
    try {
        this.hostName = java.net.InetAddress.getLocalHost().getHostName();
        // this.ip = java.net.Inet4Address.getLocalHost().getHostAddress();
        this.ip = getLocalIP();
    } catch (UnknownHostException e) {
        setHostName("unknown-host");
    }
}

/**
 * 获得主机IP
 * 
 * @return String
 */
public static boolean isWindowsOS() {
    boolean isWindowsOS = false;
    String osName = System.getProperty("os.name");
    if (osName.toLowerCase().indexOf("windows") > -1) {
        isWindowsOS = true;
    }
    return isWindowsOS;
}

/**
 * 获取本机ip地址，并自动区分Windows还是linux操作系统
 * 
 * @return String
 */
public static String getLocalIP() {
    String sIP = "";
    InetAddress ip = null;
    try {
        // 如果是Windows操作系统
        if (isWindowsOS()) {
            ip = InetAddress.getLocalHost();
        }
        // 如果是Linux操作系统
        else {
            boolean bFindIP = false;
            Enumeration<NetworkInterface> netInterfaces = (Enumeration<NetworkInterface>) NetworkInterface
                    .getNetworkInterfaces();
            while (netInterfaces.hasMoreElements()) {
                if (bFindIP) {
                    break;
                }
                NetworkInterface ni = (NetworkInterface) netInterfaces
                        .nextElement();
                // ----------特定情况，可以考虑用ni.getName判断
                // 遍历所有ip
                Enumeration<InetAddress> ips = ni.getInetAddresses();
                while (ips.hasMoreElements()) {
                    ip = (InetAddress) ips.nextElement();
                    if((ip.getHostAddress().endsWith(".0")) || (ip.getHostAddress().endsWith(".1"))){
                        continue;
                    }
                    if (ip.isSiteLocalAddress() && !ip.isLoopbackAddress() // 127.开头的都是lookback地址
                            && ip.getHostAddress().indexOf(":") == -1) {
                        bFindIP = true;
                        break;
                    }
                }

            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }

    if (null != ip) {
        sIP = ip.getHostAddress();
    }
    return sIP;
}

}