Java request获取客户端ip，各种apach,nginx等代理后依然正确

/**
* TODO //获得客户端的ip地址
* @param request
* @return
* @author yqwang
* @date 2017年2月22日 下午3:55:40
*/
public static String getRemortIP(HttpServletRequest request) {
if (request.getHeader("x-forwarded-for") == null) {
return request.getRemoteAddr();
}
return request.getHeader("x-forwarded-for");
}

/**
* TODO //获得客户端的主机名
* @param request
* @return
* @author yqwang
* @date 2017年2月22日 下午3:55:27
*/
public static String getRemoteHost(javax.servlet.http.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.getRemoteAddr();
}
return ip.equals("0:0:0:0:0:0:0:1") ? "127.0.0.1" : ip;
}