src/main/java/facafesta/controller/VerItem.java

   1 package facafesta.controller;
   2
   3 import java.io.IOException;
   4
   5 import javax.persistence.EntityManager;
   6 import javax.servlet.ServletException;
   7 import javax.servlet.annotation.WebServlet;
   8 import javax.servlet.http.HttpServletRequest;
   9 import javax.servlet.http.HttpServletResponse;
  10
  11 import facafesta.Servlet;
  12 import facafesta.Util;
  13 import facafesta.model.Item;
  14
  15 @WebServlet("/item/*")
  16 public class VerItem extends Servlet {
  17
  18         private static final long serialVersionUID = 1L;
  19
  20         @Override
  21         protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
  22                 setRequest(req);
  23                 String[] parts = req.getRequestURI().substring(1).split("/");
  24                 if (parts.length != 2 || !parts[1].matches("\\d+")) {
  25                         naoEncontrado(resp);
  26                 } else {
  27                         EntityManager manager = Util.getEntityManager();
  28                         Long idItem = new Long(parts[1]);
  29                         Item item = (Item) manager.createQuery("from Item where id = :id").setParameter("id", idItem).getSingleResult();
  30                         if (item == null) {
  31                                 naoEncontrado(resp);
  32                         } else {
  33                                 req.setAttribute("item", item);
  34                                 getServletContext().getRequestDispatcher("/WEB-INF/item-show.jsp").forward(req, resp);
  35                         }
  36                         manager.close();
  37                 }
  38         }
  39
  40         private void naoEncontrado(HttpServletResponse resp) throws IOException {
  41                 addErro("Item não encontrado.");
  42                 resp.sendRedirect("/itens");
  43         }
  44
  45 }