使用java語言獲取主機IP地址的工具類

package com.yoyo.util;

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

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.lang.StringUtils;

public class GetIPUtils {
	/**
	 * 獲取本計算機的真實的IP地址
	 * @return
	 */
    public  static String getHostIp(){  
        try{  
            Enumeration<NetworkInterface> allNetInterfaces = NetworkInterface.getNetworkInterfaces();  
            while (allNetInterfaces.hasMoreElements()){  
                NetworkInterface netInterface = (NetworkInterface) allNetInterfaces.nextElement();  
                Enumeration<InetAddress> addresses = netInterface.getInetAddresses();  
                while (addresses.hasMoreElements()){  
                    InetAddress ip = (InetAddress) addresses.nextElement();  
                    if (ip != null   
                            && ip instanceof Inet4Address  
                            && !ip.isLoopbackAddress() //loopback地址即本機地址，IPv4的loopback範圍是127.0.0.0 ~ 127.255.255.255  
                            && ip.getHostAddress().indexOf(":")==-1){  
                        System.out.println("本機的IP = " + ip.getHostAddress());  
                        return ip.getHostAddress();  
                    }   
                }  
            }  
        }catch(Exception e){  
            e.printStackTrace();  
        }  
        return null;  
    }  
//--------------------------------------------------------------------------------------
    /**
     * 獲取localhost127.0.0.1IP地址
     * @param request
     * @return
     */
    public static String getIpAdrress(HttpServletRequest request) {
        String Xip = request.getHeader("X-Real-IP");
        String XFor = request.getHeader("X-Forwarded-For");
        if(StringUtils.isNotEmpty(XFor) && !"unKnown".equalsIgnoreCase(XFor)){
            //多次反向代理後會有多個ip值，第一個ip纔是真實ip
            int index = XFor.indexOf(",");
            if(index != -1){
                return XFor.substring(0,index);
            }else{
                return XFor;
            }
        }
        XFor = Xip;
        if(StringUtils.isNotEmpty(XFor) && !"unKnown".equalsIgnoreCase(XFor)){
            return XFor;
        }
        if (StringUtils.isBlank(XFor) || "unknown".equalsIgnoreCase(XFor)) {
            XFor = request.getHeader("Proxy-Client-IP");
        }
        if (StringUtils.isBlank(XFor) || "unknown".equalsIgnoreCase(XFor)) {
            XFor = request.getHeader("WL-Proxy-Client-IP");
        }
        if (StringUtils.isBlank(XFor) || "unknown".equalsIgnoreCase(XFor)) {
            XFor = request.getHeader("HTTP_CLIENT_IP");
        }
        if (StringUtils.isBlank(XFor) || "unknown".equalsIgnoreCase(XFor)) {
            XFor = request.getHeader("HTTP_X_FORWARDED_FOR");
        }
        if (StringUtils.isBlank(XFor) || "unknown".equalsIgnoreCase(XFor)) {
            XFor = request.getRemoteAddr();
        }
        return XFor;
    }
}