获取客服端IP

[java]代码库

	// 获得客户端IP
	public static String getClientIP(HttpServletRequest request) {
		HttpSession session = request.getSession();
		// 判断是不是从代理过来的IP
		String ip = request.getHeader("x-forwarded-for");
		
		boolean blank = ip==null? true:false; 
		if (blank || "unknown".equalsIgnoreCase(ip)) {
			ip = request.getHeader("Proxy-Client-IP");
		}

		if (blank || "unknown".equalsIgnoreCase(ip)) {
			ip = request.getHeader("WL-Proxy-Client-IP");
		}

		if (blank || "unknown".equalsIgnoreCase(ip)) {
			ip = request.getRemoteAddr();
		}
		session.setAttribute("ip", ip);
		return ip;
	}