学步园

原文：java获取客户端IP的方法

源代码下载地址：http://www.zuidaima.com/share/1550463687150592.htm

最近项目中有一处要实现获取客户端IP的功能，写了一个获取的方法，可以得到客户端的IP，但是获得服务器端的IP地址是127.0.0.1，最后改了下方法可以获得真实的客户端地址了，传上来大家有需要的可以看下

package com.zuidaima.util;
/**
 * @Title: getIpAddr 
 * @author kaka  www.zuidaima.com
 * @Description: 获取客户端IP地址  
 * @param @return    
 * @return String   
 * @throws
 */
public static String getIpAddr(HttpServletRequest request) { 
       String ip = request.getHeader("x-forwarded-for"); 
       if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { 
           ip = request.getHeader("Proxy-Client-IP"); 
       } 
       if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { 
           ip = request.getHeader("WL-Proxy-Client-IP"); 
       } 
       if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { 
           ip = request.getRemoteAddr(); 
           if(ip.equals("127.0.0.1")){   
        	   //根据网卡取本机配置的IP   
        	   InetAddress inet=null;   
	           try {   
	        	   inet = InetAddress.getLocalHost();   
	           } catch (UnknownHostException e) {   
	        	   e.printStackTrace();   
	           }   
	           ip= inet.getHostAddress();   
           }
       } 
       // 对于通过多个代理的情况，第一个IP为客户端真实IP,多个IP按照','分割
       if(ip != null && ip.length() > 15){  
           if(ip.indexOf(",")>0){   
               ip = ip.substring(0,ip.indexOf(","));   
           }   
       }   
       return ip; 
}