Modifier le nom de fichier PDF (fileupload primefaces)

Bonjour , je suis entrain de faire un formulaire de saisie, en fait l'utilisateur va uploder son CV (fichier pdf) , pour faire la distinction entre les fichiers, je dois modifier le nom du cv par ID.pdf, le problème c'est que après avoir utiliser le composant <p:fileupload> de primefaces , le fichier se stocke imédiatement dans le disque sans pour autant , cliquer sur submit, donc je peux pas le modifier par getID !!

Voici le JSFManagedBean :

Code:

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@ManagedBean(name="candsBean")
@ViewScoped
public class Candsean implements Serializable {
 
    private Recs recs;
    private List<Recs> recss;
    private List<String> emails = new ArrayList<String>();
    private List<String> cins = new ArrayList<String>();
    private String destination="C:\\temp\\candidaturespontannee\\";
    private String pdfPath;
    private boolean displayed = false;
    private String nomPDF;
    @ManagedProperty("#{fileUploadController}")
    FileUploadController fileUploadController;
 
    public Candsean() {
        recs = new Recs();
    }
 
     @PostConstruct
    public void init(){
        Session session = HibernateUtil.getSessionFactory().openSession();
        Query q = session.createQuery("FROM Recs");
        List<Recs> list = q.list();
        for (Recs recs:list){
            emails.add(recs.getEmail());
            cins.add(recs.getCin());
        }
 
    }
 
      public void preparerInsertion() {
        recs = new Recs();
 
    }
 
        public String insertion() {
        CandsDao candidatspontanneeDao = new CandsDaoImpl();
        if(emails.contains(recs.getEmail()) ){
            FacesContext ctx = FacesContext.getCurrentInstance();
            ctx.addMessage(null, new FacesMessage("Vous etes déjà inscrit"));
            return null;
 
        }
 
        if (cins.contains(recs.getCin())){
            FacesContext ctx = FacesContext.getCurrentInstance();
            ctx.addMessage(null, new FacesMessage("Vous etes déjà inscrit"));
            return null;   
        }   
        nomPDF=""+recs.getCin()+".pdf";
        candidatspontanneeDao.inserer(recs);
        return "bienvenue";
    }
 
    public Recs getRecs() {
        return recs;
    }
 
    public void setRecs(Recs recs) {
        this.recs = recs;
    }
 
    public List<Recs> getRecss() {
        return recss;
    }
 
    public void setRecss(List<Recs> recss) {
        this.recss = recss;
    }
 
    public List<String> getEmails() {
        return emails;
    }
 
    public void setEmails(List<String> emails) {
        this.emails = emails;
    }
 
    public List<String> getCins() {
        return cins;
    }
 
    public void setCins(List<String> cins) {
        this.cins = cins;
    }
 
          public List<Recs> getCandidatspontannees() {
        CandsDao candidatspontanneeDao = new CandsDaoImpl();
        recss = candidatspontanneeDao.chercherTous();
        return recss;
    }
 
    public FileUploadController getFileUploadController() {
        return fileUploadController;
    }
 
    public void setFileUploadController(FileUploadController fileUploadController) {
        this.fileUploadController = fileUploadController;
    }
 
 
 public void upload(FileUploadEvent event) { 
 
       // Do what you want with the file 
       try {
           String fileName = event.getFile().getFileName();
           //fileName + ".pdf"
           copyFile(fileName, event.getFile().getInputstream());
 
           FacesMessage msg = new FacesMessage("Succesful", event.getFile().getFileName() + " is uploaded.");  
           FacesContext.getCurrentInstance().addMessage(null, msg);
           displayed=!displayed;
 
       }catch (IOException e) {
           e.printStackTrace();
       }
 
   }
 
    public void copyFile(String fileName, InputStream in) throws FileNotFoundException {
        try {
            // write the inputStream to a FileOutputStream
            OutputStream out = new FileOutputStream(new File(destination + fileName));
            int read = 0;
            byte[] bytes = new byte[1024];
            while ((read = in.read(bytes)) != -1) {
                out.write(bytes, 0, read);
            }
            in.close();
            out.flush();
            out.close();
            System.out.println("New file created!");
        }catch (IOException e) {
            System.out.println(e.getMessage());
        }
    }
 
    public String getDestination() {
        return destination;
    }
 
    public void setDestination(String destination) {
        this.destination = destination;
    }
 
    public String getPdfPath() {
        return pdfPath;
    }
 
    public void setPdfPath(String pdfPath) {
        this.pdfPath = pdfPath;
    }
 
    public boolean isDisplayed() {
        return displayed;
    }
 
    public void setDisplayed(boolean displayed) {
        this.displayed = displayed;
    }
 
    public String getNomPDF() {
        return nomPDF;
    }
 
    public void setNomPDF(String nomPDF) {
        this.nomPDF = nomPDF;
    }

et dans le JSF Page :

Code:

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        <h:outputLabel for="cv" value="Ajouter CV : *" />
         <p:outputPanel id="file"   >
             <p:fileUpload   rendered="#{!candsBean.displayed}"  style="font-size: 100% !important;"  fileUploadListener="#{candsBean.upload}"    update="file,messages" sizeLimit="10000000" allowTypes="/(\.|\/)(pdf)$/" auto="true"  showButtons="false" label="Choisissez un fichier" /> 
         <p:growl  id="messages" showDetail="true"/> 
         </p:outputPanel>