2. FrontControllerServlet ex2

public void handleRequest(request.getParameter("command");
		if(command.equals("FindCar")) {
			findCar(request, response);
		}else if(command.equals("RegisterCar")){
			RegisterCar(request, response);
		}
	}	
	//차 정보 검색 메서드
	public void findCar(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{
		String carNo = request.getParameter("carNo");
		 String carInfo = MockDAO.getInstance().findCarInfo(carNo);
		 String view = null;	
		 if(carInfo==null) {
		 		view= "findcar-fail.jsp";
		 	}else {
		 		view="findcar-ok.jsp";
		 		request.setAttribute("carInfo", carInfo);
		 	}
			request.getRequestDispatcher(view).forward(request, response);
	
	}
    //차 등록 메서드
	public void RegisterCar(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{
		String carInfo = request.getParameter("carInfo");
		MockDAO.getInstance().registerCar(carInfo);
		response.sendRedirect("registercar-result.jsp");
		
	}

//handleRequest 메서드로 hidden값(command)를 받아와서 해당하는 경우에 알맞는 메서드로 command값을 보내준다.
//command가 FindCar과 같다면, findCar메서드에 command값(carNo)를 보내주고,
//command가 RegisterCar와 같다면 registerCar메서드에 command값(carInfo)를 보내준다.