HttpServletRequest获取远程客户端IP(考虑代理)以及java获取本机IP地址(去除虚拟机、蓝牙等)

叁歲伎倆 2024-04-17 22:47 22阅读 0赞

protected String getRemoteIP() {
    		String ip = null;
    
    		// X-Forwarded-For：Squid 服务代理
    		String ipAddresses = request.getHeader("X-Forwarded-For");
    		if (ipAddresses == null || ipAddresses.length() == 0 || "unknown".equalsIgnoreCase(ipAddresses)) {
    			// Proxy-Client-IP：apache 服务代理
    			ipAddresses = request.getHeader("Proxy-Client-IP");
    		}
    		if (ipAddresses == null || ipAddresses.length() == 0 || "unknown".equalsIgnoreCase(ipAddresses)) {
    			// WL-Proxy-Client-IP：weblogic 服务代理
    			ipAddresses = request.getHeader("WL-Proxy-Client-IP");
    		}
    		if (ipAddresses == null || ipAddresses.length() == 0 || "unknown".equalsIgnoreCase(ipAddresses)) {
    			// HTTP_CLIENT_IP：有些代理服务器
    			ipAddresses = request.getHeader("HTTP_CLIENT_IP");
    		}
    		if (ipAddresses == null || ipAddresses.length() == 0 || "unknown".equalsIgnoreCase(ipAddresses)) {
    			// X-Real-IP：nginx服务代理
    			ipAddresses = request.getHeader("X-Real-IP");
    		}
    
    		// 有些网络通过多层代理，那么获取到的ip就会有多个，一般都是通过逗号（,）分割开来，并且第一个ip为客户端的真实IP
    		if (ipAddresses != null && ipAddresses.length() != 0) {
    			ip = ipAddresses.split(",")[0];
    		}
    
    		// 还是不能获取到，最后再通过request.getRemoteAddr();获取
    		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ipAddresses)) {
    			ip = request.getRemoteAddr();
    		}
    		
    		//如果获取到的是127.0.0.1或0:0:0:0:0:0:0:1，就获取本地ip
    		try {
    			ip = getHostIP();
    		} catch (SocketException e) {
    			LogUtil.error("获取本机IP异常！", e);
    		}
    		
    		return ip;
    	}
    	
    	private String getHostIP() throws SocketException{
    		Enumeration<NetworkInterface> allNetInterfaces = NetworkInterface.getNetworkInterfaces();
    		 
    		while (allNetInterfaces.hasMoreElements()) {
    			NetworkInterface netInterface = (NetworkInterface) allNetInterfaces.nextElement();
    			
    			// 去除回环接口，子接口，未运行接口
    			if (netInterface.isLoopback() || netInterface.isVirtual() || !netInterface.isUp()) {
    				continue;
    			}
    			if (!netInterface.getDisplayName().contains("Intel") && !netInterface.getDisplayName().contains("Realtek")) {
    				continue;
    			}
    			
    			Enumeration<InetAddress> addresses = netInterface.getInetAddresses();
    			while (addresses.hasMoreElements()) {
    				InetAddress ip = (InetAddress) addresses.nextElement();
    				if (ip != null && ip instanceof Inet4Address) {
    					return ip.getHostAddress();
    				}
    			}
    		}
    		return null;
    	}