工具类：获取客户端真实ip地址

末蓝、 2024-03-22 12:55 64阅读 0赞

import org.springframework.http.HttpHeaders;
    import org.springframework.http.server.reactive.ServerHttpRequest;
    
    import javax.servlet.http.HttpServletRequest;
    import java.net.InetAddress;
    import java.net.UnknownHostException;
    
    /**
     * 获取ip地址
     */
    public class IpUtil {
        
    
        public static String getIpAddress(HttpServletRequest request) {
        
            String ipAddress = null;
            try {
        
                ipAddress = request.getHeader("x-forwarded-for");
                if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
        
                    ipAddress = request.getHeader("Proxy-Client-IP");
                }
                if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
        
                    ipAddress = request.getHeader("WL-Proxy-Client-IP");
                }
                if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
        
                    ipAddress = request.getRemoteAddr();
                    if (ipAddress.equals("127.0.0.1")) {
        
                        // 根据网卡取本机配置的IP
                        InetAddress inet = null;
                        try {
        
                            inet = InetAddress.getLocalHost();
                        } catch (UnknownHostException e) {
        
                            e.printStackTrace();
                        }
                        ipAddress = inet.getHostAddress();
                    }
                }
                // 对于通过多个代理的情况，第一个IP为客户端真实IP,多个IP按照','分割
                if (ipAddress != null && ipAddress.length() > 15) {
         // "***.***.***.***".length()
                    // = 15
                    if (ipAddress.indexOf(",") > 0) {
        
                        ipAddress = ipAddress.substring(0, ipAddress.indexOf(","));
                    }
                }
            } catch (Exception e) {
        
                ipAddress="";
            }
            // ipAddress = this.getRequest().getRemoteAddr();
    
            return ipAddress;
        }
    
        public static String getGatwayIpAddress(ServerHttpRequest request) {
        
            HttpHeaders headers = request.getHeaders();
            String ip = headers.getFirst("x-forwarded-for");
            if (ip != null && ip.length() != 0 && !"unknown".equalsIgnoreCase(ip)) {
        
                // 多次反向代理后会有多个ip值，第一个ip才是真实ip
                if (ip.indexOf(",") != -1) {
        
                    ip = ip.split(",")[0];
                }
            }
            if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
        
                ip = headers.getFirst("Proxy-Client-IP");
            }
            if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
        
                ip = headers.getFirst("WL-Proxy-Client-IP");
            }
            if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
        
                ip = headers.getFirst("HTTP_CLIENT_IP");
            }
            if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
        
                ip = headers.getFirst("HTTP_X_FORWARDED_FOR");
            }
            if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
        
                ip = headers.getFirst("X-Real-IP");
            }
            if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
        
                ip = request.getRemoteAddress().getAddress().getHostAddress();
            }
            return ip;
        }
    }