save zip file

[manuel.moroni]

hi,

i have the following code

ZipOutputStream zos=new ZipOutputStream(response.getOutputStream());

  byte[] buffer=new byte[1024];

  int len;

  int zipSize=0;

  for(Allegato a:allegati){

  ZipEntry ze=new ZipEntry(a.getNome());

  zos.putNextEntry(ze);

  while((len=a.getDocumento().read(buffer))>0){

  zos.write(buffer,0,len);

  zipSize+=len;

  }

  a.getDocumento().close();

  }

  zos.closeEntry();

  zos.close();

  response.setContentType("application/zip");

  response.setHeader("Pragma", "no-cache");

  response.setHeader("Content-Encoding", "zip");

  response.setHeader("Content-Disposition", "attachment;filename="+System.currentTimeMillis()+".zip");

// response.setHeader("Content-disposition", "attachment;filename=zip.zip");

// response.setHeader("Content-Length", ""+zipSize);

// response.setHeader("Expires",             "0");

  response.getOutputStream().flush();

  response.getOutputStream().close();

// IOUtils.copy(zos, response);

in order to allow the user to download a zip file.

if i save the zip on the server it works file.

if i try to send it as a reponse (Internet Explorer) to the user i get the following error:

the compress (zipped) folder ..... is invalid

what am i missing?

[bleathem]

Have you tried using the mediaOutput tag?

http://showcase.richfaces.org/richfaces/component-sample.jsf?demo=mediaOutput&skin=blueSky

[manuel.moroni]

i'm a complete noob....

i tried but it dues not work

<a4j:mediaOutput element="allegati" cacheable="false" createContent="#{sessionContainer.findSession.allegato.processDownloadAllegato}" uriAttribute="href" mimeType="application/zip"> 

  <h:graphicImage url="../........." title="download"/> 

  </a4j:mediaOutput>

public void processDownloadAllegato(OutputStream out, Object data) throws ParseException, SQLException

  {

  logStatistic("------------------------------ START METHOD processDownloadAllegato ------------------------------");

  FacesContext fc = FacesContext.getCurrentInstance();

  String listLegame="";

  List<Allegato> allegati=new ArrayList<Allegato>();

// HttpServletResponse response = (HttpServletResponse) FacesContext.getCurrentInstance().getExternalContext().getResponse();

  try

  {

  for(Allegato all:listMarca){

  //listLegame+=all.getIdDocumento()+";";

  if(all.getSelected()){

  listLegame+=all.getIdDocumento()+";";

  }

  }

  logInfo("lista legami: "+listLegame);

  logInfo("size listMarca: "+listMarca.size());

  allegati=allegatiDBMng.downloadAllegatiFromDB(listLegame);

  listLegame="";

  //FileOutputStream fos = new FileOutputStream("/rcg/resources/RCG/zip.zip");

  //ZipOutputStream zos=new ZipOutputStream(out);

  ZipOutputStream zos= (ZipOutputStream) data;

// ZipOutputStream zos=new ZipOutputStream(response.getOutputStream());

  byte[] buffer=new byte[1024];

  int len;

  int zipSize=0;

  for(Allegato a:allegati){

  ZipEntry ze=new ZipEntry(a.getNome());

  zos.putNextEntry(ze);

  while((len=a.getDocumento().read(buffer))>0){

  zos.write(buffer,0,len);

  zipSize+=len;

  }

  a.getDocumento().close();

  }

  zos.closeEntry();

  zos.close();

// response.setContentType("application/zip");

// response.setHeader("Pragma", "no-cache");

// response.setHeader("Content-Encoding", "zip");

// response.setHeader("Content-Disposition", "attachment;filename="+System.currentTimeMillis()+".zip");

// response.setHeader("Content-disposition", "attachment;filename=zip.zip");

// response.setHeader("Content-Length", ""+zipSize);

// response.setHeader("Expires",             "0");

// response.getOutputStream().flush();

// response.getOutputStream().close();

  fc.addMessage(null, new FacesMessage(FacesMessage.SEVERITY_INFO, "Download eseguito con successo.", ""));

// ret = "OK";

  } catch(Exception x)

  {

  logError("processDownloadAllegato", x);

  FacesMessage message = new FacesMessage(FacesMessage.SEVERITY_ERROR, x.getMessage(), x.getMessage());

  FacesContext.getCurrentInstance().addMessage(null, message);

  }

  logStatistic("------------------------------ END METHOD processDownloadAllegato ------------------------------");

// return ret;

  }

[bleathem]

Any errors in your browser console?  Anything in your server log?  Also, what version of RichFaces are you using?

[manuel.moroni]

no error and no logs at all.

setting properly the response i got it to work but i'm interesting on the use of the component itself.

the richfaces version is 3.3.3 (migrating to 4.3.3 meanwhile)