Hello 서블릿만들어보자.@WebServlet(name = "requestHeaderServlet", urlPatterns = "/hello")public class HelloServlet extends HttpServlet { @Override protected void service(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException { System.out.println("req = " + req); System.out.println("res = " + res); String username = req.getParameter("username"); ..
