src/java/org/ufcspa/simdecs/comunicacao/MetodoSelecionaCaso.java

   1 /*\r
   2  * To change this template, choose Tools | Templates\r
   3  * and open the template in the editor.\r
   4  */\r
   5 package org.ufcspa.simdecs.comunicacao;\r
   6 \r
   7 import java.io.BufferedInputStream;\r
   8 import java.io.IOException;\r
   9 import java.io.PrintWriter;\r
  10 import java.net.MalformedURLException;\r
  11 import java.net.URL;\r
  12 import java.net.URLConnection;\r
  13 import javax.persistence.EntityManager;\r
  14 import javax.persistence.EntityManagerFactory;\r
  15 import javax.persistence.Persistence;\r
  16 import javax.servlet.ServletException;\r
  17 import javax.servlet.http.HttpServlet;\r
  18 import javax.servlet.http.HttpServletRequest;\r
  19 import javax.servlet.http.HttpServletResponse;\r
  20 import org.ufcspa.simdecs.entidade.ArquivoCaso;\r
  21 \r
  22 /**\r
  23  *\r
  24  * @author pbarros\r
  25  */\r
  26 public class MetodoSelecionaCaso extends HttpServlet {\r
  27 \r
  28     /**\r
  29      * Processes requests for both HTTP\r
  30      * <code>GET</code> and\r
  31      * <code>POST</code> methods.\r
  32      *\r
  33      * @param request servlet request\r
  34      * @param response servlet response\r
  35      * @throws ServletException if a servlet-specific error occurs\r
  36      * @throws IOException if an I/O error occurs\r
  37      */\r
  38     protected void processRequest(HttpServletRequest request, HttpServletResponse response)\r
  39             throws ServletException, IOException {\r
  40         response.setContentType("text/html;charset=UTF-8");\r
  41         PrintWriter out = response.getWriter();\r
  42         //String file ;\r
  43 \r
  44         EntityManagerFactory emf = Persistence.createEntityManagerFactory("simdecsPU");\r
  45         EntityManager em = emf.createEntityManager();\r
  46         \r
  47         URL url = null;\r
  48         URLConnection urlConn = null;\r
  49         BufferedInputStream buf = null;\r
  50         ArquivoCaso arquivo;\r
  51         Integer idCaso = Integer.valueOf(request.getParameter("idArquivoCaso"));\r
  52         \r
  53 //        out.print(request.getParameter("idArquivoCaso"));\r
  54         try {\r
  55             \r
  56             arquivo =  (ArquivoCaso) em.createQuery("select arq from ArquivoCaso as arq where arq.id ="+idCaso)\r
  57                                                                             //.setParameter("idC",idCaso)\r
  58                                                                             .getSingleResult();\r
  59 //            out.println(arquivo.getEndArquivo());\r
  60             url = getServletContext().getResource(arquivo.getEndArquivo());\r
  61             //set response header\r
  62             response.setContentType("text/xml");\r
  63             urlConn = url.openConnection();\r
  64             //establish connection with URL presenting web.xml\r
  65             urlConn.connect();\r
  66             buf = new BufferedInputStream(urlConn.getInputStream());\r
  67             int readBytes = 0;\r
  68             while ((readBytes = buf.read()) != -1)\r
  69                 out.write(readBytes);\r
  70             } catch (MalformedURLException mue) {\r
  71             throw new ServletException(mue.getMessage());\r
  72             } catch (IOException ioe) {\r
  73             throw new ServletException(ioe.getMessage());\r
  74         } finally {            \r
  75             out.close();\r
  76             buf.close();\r
  77         }\r
  78     }\r
  79 \r
  80     // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">\r
  81     /**\r
  82      * Handles the HTTP\r
  83      * <code>GET</code> method.\r
  84      *\r
  85      * @param request servlet request\r
  86      * @param response servlet response\r
  87      * @throws ServletException if a servlet-specific error occurs\r
  88      * @throws IOException if an I/O error occurs\r
  89      */\r
  90     @Override\r
  91     protected void doGet(HttpServletRequest request, HttpServletResponse response)\r
  92             throws ServletException, IOException {\r
  93         processRequest(request, response);\r
  94     }\r
  95 \r
  96     /**\r
  97      * Handles the HTTP\r
  98      * <code>POST</code> method.\r
  99      *\r
 100      * @param request servlet request\r
 101      * @param response servlet response\r
 102      * @throws ServletException if a servlet-specific error occurs\r
 103      * @throws IOException if an I/O error occurs\r
 104      */\r
 105     @Override\r
 106     protected void doPost(HttpServletRequest request, HttpServletResponse response)\r
 107             throws ServletException, IOException {\r
 108         processRequest(request, response);\r
 109     }\r
 110 \r
 111     /**\r
 112      * Returns a short description of the servlet.\r
 113      *\r
 114      * @return a String containing servlet description\r
 115      */\r
 116     @Override\r
 117     public String getServletInfo() {\r
 118         return "Short description";\r
 119     }// </editor-fold>\r
 120 }\r