SimDeCS/src/hot/org/ufcspa/simdecs/session/crud/admin/DownloadArquivoRede.java

   1 package org.ufcspa.simdecs.session.crud.admin;
   2
   3 import javax.faces.context.ExternalContext;
   4 import javax.faces.context.FacesContext;
   5 import javax.persistence.EntityManager;
   6 import javax.servlet.ServletOutputStream;
   7 import javax.servlet.http.HttpServletResponse;
   8
   9 import org.jboss.seam.annotations.In;
  10 import org.jboss.seam.annotations.Logger;
  11 import org.jboss.seam.annotations.Name;
  12 import org.jboss.seam.annotations.web.RequestParameter;
  13 import org.jboss.seam.log.Log;
  14
  15 import org.ufcspa.simdecs.entities.ArquivoRede;
  16
  17 @Name("downloadArquivoRede")
  18 public class DownloadArquivoRede {
  19
  20         @Logger
  21         private Log log;
  22
  23         @In
  24         private EntityManager entityManager;
  25
  26         @In(value="#{facesContext.externalContext}")
  27         private ExternalContext extCtx;
  28
  29         @In(value="#{facesContext}")
  30         FacesContext facesContext;
  31
  32         @RequestParameter
  33         private Long arquivoRedeId;
  34
  35         public String download() {
  36                 ArquivoRede arquivoRede = entityManager.find(ArquivoRede.class, arquivoRedeId);
  37                 HttpServletResponse response = (HttpServletResponse)extCtx.getResponse();
  38                 response.setContentType(arquivoRede.getContentType());
  39                 response.addHeader("Content-disposition", "attachment; filename=\"" + arquivoRede.getNome() +"\"");
  40                 try {
  41                         ServletOutputStream os = response.getOutputStream();
  42                         os.write(arquivoRede.getData());
  43                         os.flush();
  44                         os.close();
  45                         facesContext.responseComplete();
  46                 } catch(Exception e) {
  47                         log.error("\nFailure : " + e.toString() + "\n");
  48                 }
  49
  50                 return null;
  51         }
  52 }