在java中获取服务器多网卡的ip地址

public static String getIP() {
Enumeration<?> netInterfaces;
List<NetworkInterface> netlist=new ArrayList<NetworkInterface>();
try {
netInterfaces = NetworkInterface.getNetworkInterfaces();//获取当前环境下的所有网卡
while (netInterfaces.hasMoreElements()) {
NetworkInterface ni=(NetworkInterface)netInterfaces.nextElement();
if(ni.isLoopback())
continue;//过滤 lo网卡
netlist.add(0,ni);//倒置网卡顺序
}  /*
用上述方法获取所有网卡时，得到的顺序与服务器中用ifconfig命令看到的网卡顺序相反，
因此，想要从第一块网卡开始遍历时，需要将Enumeration<?>中的元素倒序 */

for(NetworkInterface list:netlist) { //遍历每个网卡

Enumeration<?> cardipaddress = list.getInetAddresses();//获取网卡下所有ip

while(cardipaddress.hasMoreElements()){//将网卡下所有ip地址取出
InetAddress ip = (InetAddress) cardipaddress.nextElement();
if(!ip.isLoopbackAddress()){
if(ip.getHostAddress().equalsIgnoreCase("127.0.0.1")){//guo
//return ip.getHostAddress();
continue;
}
if(ip instanceof Inet6Address)  {   //过滤ipv6地址  add by liming 2013-9-3
//return ip.getHostAddress();
continue;
}
if(ip instanceof Inet4Address)  {    //返回ipv4地址
return ip.getHostAddress();
}
}
return ip.getLocalHost().getHostAddress();//默认返回
}

}

} catch (SocketException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
return "";
}