目录
代码：
x-forwarded-for
参考：
代码：
public static String getIpAddress(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.getHeader("HTTP_CLIENT_IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("HTTP_X_FORWARDED_FOR");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getRemoteAddr();
}
if (ip.equals("0:0:0:0:0:0:0:1")) {
ip = "localhost";
}
return ip;
}
从request里获取客户端的ip，常规上的写法是上面那样，可以根据实际情况来调整。
x-forwarded-for
获取这个的值，是因为可能有配置了反向代理服务器，比如nginx。
可以参考
参考：
HTTP 请求头中的 X-Forwarded-For，X-Real-IP - weelin_area - 博客园 (cnblogs.com)
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