Java得到请求的IP地址

/**
	 * 得到请求的IP地址
	 * 
	 * @param request
	 * @return
	 */
	public static String getIp(HttpServletRequest request) {
		String ip = request.getHeader("X-Real-IP");
		if (StringUtils.isBlank(ip)) {
			ip = request.getHeader("Host");
		}
		if (StringUtils.isBlank(ip)) {
			ip = request.getHeader("X-Forwarded-For");
		}
		if (StringUtils.isBlank(ip)) {
			ip = "0.0.0.0";
		}
		return ip;
	}