Ich habe einen Kalender, einen Editor, fileUpload und ein dataTable-Primefaces-Steuerelement auf einem jsf-Facelet.

Code lautet wie folgt:

<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<ui:composition xmlns:ui="http://java.sun.com/jsf/facelets"
                template="./../templates/masterlayout.xhtml"
                xmlns:h="http://java.sun.com/jsf/html"
                xmlns:p="http://primefaces.prime.com.tr/ui"
                xmlns:f="http://java.sun.com/jsf/core">

    <ui:define name="title">#{lbl.SSTitle}</ui:define>

    <ui:define name="content">
        <h:form>
            <p:panel header="Upload Script">
                <h:outputText value="Welcome #{loginActionBean.login.emp.empName}"/>
                <br />
                <p:calendar value="#{searchScriptActionBean.scheduleDate}" />
                <br />
                <p:fileUpload fileUploadListener="#{searchScriptActionBean.handleFileUpload}"
                              multiple="true" update="filsList" allowTypes="*.txt;*.init" description="Script Files">
                </p:fileUpload>
                <br />
                <p:editor value="#{searchScriptActionBean.htmlText}" />
            </p:panel>
            <p:dataTable id="filsList" value="#{searchScriptActionBean.scriptFiles}" var="file">

                <p:column>
                    <f:facet name="header">
                        <h:outputText value="File Name" />
                    </f:facet>
                    <h:outputText value="#{file.fileName}" />
                </p:column>

                <p:column>
                    <f:facet name="header">
                        <h:outputText value="Size" />
                    </f:facet>
                    <h:outputText value="#{file.size}" />
                </p:column>

                <p:column>
                    <f:facet name="header">
                        <h:outputText value="Operation" />
                    </f:facet>
                    <h:commandLink value="Remove">
                        <p:collector value="#{file}" removeFrom="#{searchScriptActionBean.scriptFiles}" />
                    </h:commandLink>
                </p:column>

            </p:dataTable>
        </h:form>
    </ui:define>
</ui:composition>

und @ViewScoped Bean wie folgt,

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package com.ugam.crawler.web.script;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import javax.faces.bean.ViewScoped;
import javax.inject.Named;
import org.primefaces.event.FileUploadEvent;
import org.primefaces.model.UploadedFile;

/**
 *
 * @author devendra.mahajan
 */
@Named(value = "searchScriptActionBean")
@ViewScoped
public class SearchScriptActionBean implements Serializable{

    protected String htmlText;
    private Date scheduleDate;
    private List<UploadedFile> scriptFiles = new ArrayList<UploadedFile>();;
    /**
     * Get the value of scheduleDate
     *
     * @return the value of scheduleDate
     */
    public Date getScheduleDate() {
        return scheduleDate;
    }

    /**
     * Set the value of scheduleDate
     *
     * @param scheduleDate new value of scheduleDate
     */
    public void setScheduleDate(Date scheduleDate) {
        this.scheduleDate = scheduleDate;
    }

    /**
     * @return the scriptFiles
     */
    public List<UploadedFile> getScriptFiles() {
        return scriptFiles;
    }

    /**
     * @param scriptFiles the scriptFiles to set
     */
    public void setScriptFiles(List<UploadedFile> scriptFiles) {
        this.scriptFiles = scriptFiles;
    }

    /** Creates a new instance of SearchScriptActionBean */
    public SearchScriptActionBean() {
        System.out.println("In SearchScriptActionBean Constructor");

    }

    public void handleFileUpload(FileUploadEvent event) {
        //add facesmessage to display with growl
        //application code
        UploadedFile file = event.getFile();
        scriptFiles.add(file);


    }


    /**
     * Get the value of htmlText
     *
     * @return the value of htmlText
     */
    public String getHtmlText() {
        return htmlText;
    }

    /**
     * Set the value of htmlText
     *
     * @param htmlText new value of htmlText
     */
    public void setHtmlText(String htmlText) {
        this.htmlText = htmlText;
    }
}

Mein Problem ist, dass SearchScriptActionBean beim Laden des Formulars und beim Hochladen einer Datei häufig geladen wird. Ich möchte alte Werte der Bohne behalten. Ex. scriptFiles (Liste), in die hochgeladene Dateien eingefügt werden. und filsList (dataTable) wird nicht aktualisiert.