登錄之后頁面右上角顯示用戶名

<ul class="lf">
        <%
      Object object = session.getAttribute("user");
      if(object!=null){
       User user = (User)object;
     %>
          <li><a href=" "><%=user.getName() %></a><b>|</b></li>
         <%
      }
         %>
            <li><a href="favorites.html" title="我的收藏"><img class="care" src="/TeduStore/images/header/care.png" alt=""/></a><b>|</b></li>
            <li><a href="orders.html" title="我的訂單"><img class="order" src="/TeduStore/images/header/order.png" alt=""/></a><b>|</b></li>
            <li><a href="cart.html" title="我的購物車"><img class="shopcar" src="/TeduStore/images/header/shop_car.png" alt=""/></a><b>|</b></li>
            <li><a href="help.html">幫助</a><b>|</b></li>
            
        <%if(object!=null){ %>
            <li><a href="ExitServlet">退出</a></li>
            <%}else{ %>
             <li><a href="login.jsp">登錄</a></li>
            <% } %>
        </ul>