correction bug de login null

WEB-INF/src/controleurs/Feed.java

@@ -20,10 +20,12 @@ public class Feed extends HttpServlet {
     public void service(HttpServletRequest req, HttpServletResponse res)
             throws IOException {
         if (req.getSession().getAttribute("user") != null) {
+            System.out.println("Utilisateur connecté :" + req.getSession().getAttribute("user"));
             UserDAO userDao = new UserDAO();
             ThreadDAO threadDao = new ThreadDAO();
             PrintWriter out = res.getWriter();
-            String login = req.getParameter("login");
+            String login = (String) req.getSession().getAttribute("login");
+            System.out.println(login);
 
             User user = userDao.getUserByLogs(login, req.getParameter("password"));
             if (user != null) {

WEB-INF/src/controleurs/LogIn.java

@@ -18,13 +18,19 @@ public class LogIn extends HttpServlet {
         PrintWriter out = res.getWriter();
         UserDAO userdao = new UserDAO();
         User user = userdao.getUserByLogs(req.getParameter("login"), req.getParameter("pwd"));
+        req.getSession().setAttribute("login", user.getUserName());
+        if (user == null) System.out.println("user null");
  
         if (userdao.isDatabased(user)){
             out.println("<h1>Bienvenue " + user.getUserName() + " !</h1>");
+            if (req.getSession() != null) {
                 req.getSession().setAttribute("user", user);
+            }
+            else System.out.println("session nulle");
             res.sendRedirect("http://localhost:8080/s4a021-web-backend/Welcome");
         }else{
             out.println("<h1>Partez de chez moi ?!</h1>");
+            System.out.println("erreur");
         }
     }
 }

WEB-INF/src/dao/BDConnection.java

@@ -9,7 +9,7 @@ public class BDConnection {
     public BDConnection(){
         try{
             Class.forName("org.postgresql.Driver");
-            this.connection = DriverManager.getConnection("jdbc:postgresql://psqlserv/but2", "yannis.devos.etu", "moi");
+            this.connection = DriverManager.getConnection("jdbc:postgresql://psqlserv/but2", "yannisdevosetu", "moi");
         } catch (Exception e) {
             e.getStackTrace();
         }

WEB-INF/src/dao/UserDAO.java

@@ -14,6 +14,7 @@ public class UserDAO {
 
     public UserDAO(){
         this.con = new BDConnection().getConnection();
+        if (this.con == null) System.out.println("Connection nulle");
     }
 
     public void createUser(String username, String password){