String requestURI = req.getRequestURI();
        String userId = extractUserId(requestURI);
        String userId2 = req.getPathInfo();
        String contextPath = req.getContextPath();
        String serverName = req.getServerName();
        String protocol = req.getProtocol();
        int serverPort = req.getServerPort();
        System.out.println("total_serverName = "+ protocol + serverName +":" + serverPort + contextPath + "/" + userId + userId2 );
        System.out.println("protocol = " + protocol);
        System.out.println("serverName = " + serverName);
        System.out.println("serverPort = " + serverPort);
        System.out.println("contextPath = " + contextPath);
        System.out.println("userId = " + userId);
        System.out.println("userId2 = " + userId2);
        System.out.println("doGet!!");

결과값: --------------------------------------------------------------
total_serverName = HTTP/1.1localhost:8080/bcd/list/8
protocol = HTTP/1.1
serverName = localhost
serverPort = 8080
contextPath = /bcd
userId = list
userId2 = /8
doGet!!