Upload para "dentro" do servidor Glassfish, tem como?

<filter-name>PrimeFaces FileUpload Filter</filter-name>

<filter-class>

org.primefaces.webapp.filter.FileUploadFilter

</filter-class>

<init-param>

<param-name>uploadDirectory</param-name>

<param-value>/web/UPLOAD/</param-value>

</init-param>

<init-param>

<param-name>thresholdSize</param-name>

<param-value>10000</param-value>

</init-param>

</filter>

<filter-mapping>

<filter-name>PrimeFaces FileUpload Filter</filter-name>

<servlet-name>Faces Servlet</servlet-name>

</filter-mapping>
</web-app>

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package Utils;

import java.io.*;
import javax.faces.application.FacesMessage;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
import javax.faces.context.FacesContext;
import org.primefaces.event.FileUploadEvent;
import org.primefaces.model.DefaultStreamedContent;
import org.primefaces.model.StreamedContent;
import org.primefaces.model.UploadedFile;

/**
 *
 * @author felipehts
 */
@ManagedBean
@SessionScoped
public class FileUpload {

    private StreamedContent file;




    public void setFile(StreamedContent file) {
        this.file = file;
    }


    public void processFileUpload(FileUploadEvent event) throws IOException {
        try {
            // Topicos.setNomearquivo(event.getFile().getFileName());
            //Cria um arquivo UploadFile, para receber o arquivo do evento

            UploadedFile arq = event.getFile();
            InputStream in = new BufferedInputStream(arq.getInputstream());
            //copiar para pasta do projeto
     
            File file = new File("/web/UPLOAD" +  arq.getFileName());
            //O método file.getAbsolutePath() fornece o caminho do arquivo criado
            //Pode ser usado para ligar algum objeto do banco ao arquivo enviado
            String caminho = file.getAbsolutePath();
            FileOutputStream fout = new FileOutputStream(file);
            while (in.available() != 0) {
                fout.write(in.read());
            }

            fout.close();
                    FacesMessage msg = new FacesMessage("Sucesso ", event.getFile().getFileName() + " foi enviado para o SatServidor.");
		FacesContext.getCurrentInstance().addMessage(null, msg);
        } catch (Exception ex) {
            ex.printStackTrace();
        }

    }

  
}