java获取注册ip

 1             String ip = request.getHeader("x-forwarded-for");
 2             if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
 3                 ip = request.getHeader("Proxy-Client-IP");
 4             }
 5             if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
 6                 ip = request.getHeader("WL-Proxy-Client-IP");
 7             }
 8             if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
 9                 ip = request.getRemoteAddr();
10             }
11             System.out.println("ip:"+ip);
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原文地址：https://www.cnblogs.com/houhaihu/p/6178188.html