ServletOperation

package Web;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.*;
import Metier.*;

@WebServlet("/ServletOperation")
public class ServletOperation extends HttpServlet {
	private static final long serialVersionUID = 1L;
    public ServletOperation() {
        super();
    }
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		request.getSession().setAttribute("user", null);
		getServletContext().getRequestDispatcher("/login.jsp").forward(request,  response);
	}
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
	    HttpSession session= request.getSession();

	    String page= (String) session.getAttribute("page");
	    User user;

	    if (page.equals("inscription")) {
	    	String email=request.getParameter("email");
	    	if (User.getUser(email)==null) {
		    	user= new User();
		    	user.setEmail(email);
		    	user.setNomPr(request.getParameter("nomPr"));
		    	user.setPassWord(request.getParameter("passWord"));
		    	user.setStatut(request.getParameter("statut"));
		    	doGet(request,response);
	    	}
	    	else {
	    		request.setAttribute("erreur", "email deja existant");
	    		getServletContext().getRequestDispatcher("/inscription.jsp").forward(request,  response);
	    	}
	    }
	    else
	    if (page.equals("login")) {

	    	String email=request.getParameter("email");
	    	String passWord=request.getParameter("passWord");
	    	user=User.getUser(email, passWord);
	    	if (user!=null) {
	    		session.setAttribute("user",user );
	    		getServletContext().getRequestDispatcher("/AjoutMessage.jsp").forward(request,  response);
	    	}
	    	else {
	    		request.setAttribute("erreur", "email ou mot de passe incorrect");
	    		doGet(request,response);
	    	}

	    }
	    else
		    if (page.equals("AjoutMessage")) {

		    	String action=request.getParameter("action");
		    	user=(User)session.getAttribute("user");

		    	if (action.equals("envoi")) {

		    		Message message=new Message();
		    		message.setUser(user);
		    		message.setMessage(request.getParameter("message"));
		    		getServletContext().getRequestDispatcher("/AjoutMessage.jsp").forward(request,  response);

		    	}
		    	else
		    		if (action.equals("visualiser")){
		    		    session.setAttribute("messages",Message.getMessagesByUser(user));
		    			getServletContext().getRequestDispatcher
		    			("/visualiserMessages.jsp").forward(request,  response);

		    		}

		    }


	}

}