public static String getIpFromRequest(HttpServletRequest request) {
//取代理ip地址
String ip = request.getHeader("x-forwarded-for");
//取nginx代理设置的ip地址
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("x-real-ip");
}
//从网上取的
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("Proxy-Client-IP");
}
//取JAVA获得的ip地址
if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getRemoteAddr();
}
//去除unkonwn
if (ip.startsWith("unknown")) {
ip = ip.substring(ip.indexOf("unknown") + "unknown".length());
}
//去除多多余的信息
ip = ip.trim();
if (ip.startsWith(",")) {
ip = ip.substring(1);
}
if (ip.indexOf(",") > 0) {
ip = ip.substring(0, ip.indexOf(","));
}
return ip;
}
通过HttpServletRequest获取real ip
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