在java中获取客户端真实的IP地址

原创于 2011-12-20 13:55:26 发布 · 92 阅读

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public static String getRemoteAddress(HttpServletRequest request){
    String ip = request.getHeader("x-forwarded-for");
    if(ip == null || ip.length() == 0 || ip.equalsIgnoreCase("unknown")) ip = request.getHeader("Proxy-Client-IP");
    if(ip == null || ip.length() == 0 || ip.equalsIgnoreCase("unknown")) ip = request.getHeader("WL-Proxy-Client-IP");
    if(ip == null || ip.length() == 0 || ip.equalsIgnoreCase("unknown")) ip = request.getRemoteAddr();
    return ip;
}