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

public class OSUtil {

 /**
  * 判断当前操作是否Windows.
  *
  * @return true---是Windows操作系统
  */
 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.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;
 }
 //如果不能满足要求，请留言并说明情况
 public static void main(String[] args) {
  String serverIP = OS.getLocalIP();
  System.out.println("serverIP:::" + serverIP);
 }
}