1-2. 서블릿 클래스 Post방식 전송 @WebServlet("/ch01/ex02/add") public class DoPost extends HttpServlet { private static final long serialVersionUID = 1L; protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { int num1 = 1; int num2 = 2; response.setContentType("text/html;charset=utf-8"); PrintWriter out = response.getWriter(); out.println("PO..