转自:http://www.cnblogs.com/xjh5201314/p/6591174.html
1 public static String getIpAddress(HttpServletRequest request){
2
3 String ipAddress = request.getHeader("x-forwarded-for");
4
5 if(ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
6 ipAddress = request.getHeader("Proxy-Client-IP");
7 }
8 if (ipAddress == null || ipAddress.length() == 0 || "unknow".equalsIgnoreCase(ipAddress)) {
9 ipAddress = request.getHeader("WL-Proxy-Client-IP");
10 }
11 if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
12 ipAddress = request.getRemoteAddr();
13
14 if(ipAddress.equals("127.0.0.1") || ipAddress.equals("0:0:0:0:0:0:0:1")){
15 //根据网卡获取本机配置的IP地址
16 InetAddress inetAddress = null;
17 try {
18 inetAddress = InetAddress.getLocalHost();
19 } catch (UnknownHostException e) {
20 e.printStackTrace();
21 }
22 ipAddress = inetAddress.getHostAddress();
23 }
24 }
25
26 //对于通过多个代理的情况,第一个IP为客户端真实的IP地址,多个IP按照','分割
27 if(null != ipAddress && ipAddress.length() > 15){
28 //"***.***.***.***".length() = 15
29 if(ipAddress.indexOf(",") > 0){
30 ipAddress = ipAddress.substring(0, ipAddress.indexOf(","));
31 }
32 }
33
34 return ipAddress;
35 }
方法最下方的if()语句,是为了防止使用tomcat服务器,在本地测试的时候,得出的ip地址是127.0.0.1的问题。
引用自:多级反向代理下,Java获取请求客户端的真实IP地址多中方法整合
在JAVA中,服务端获取客户端真正的IP地址
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转载自lysj102289.iteye.com/blog/2396276
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