fileUploadListener="#{fileUploadBean.listener}": java.lang.N

[giannisapi]

Hi all,

I am using the example from exadel live demo in order to upload some images.

The code compiles fine now but when i click the upload button in order to upload the selected image i get the following exception:

java.lang.NullPointerException
javax.faces.el.EvaluationException: /CarAddTemp.xhtml @32,47 fileUploadListener="#{fileUploadBean.listener}": java.lang.NullPointerException
at com.sun.facelets.el.LegacyMethodBinding.invoke(LegacyMethodBinding.java:73)
at org.richfaces.component.UIFileUpload.broadcast(UIFileUpload.java:158)
at org.ajax4jsf.component.AjaxViewRoot.processEvents(AjaxViewRoot.java:321)
at org.ajax4jsf.component.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:294)
at org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:253)
at org.ajax4jsf.component.AjaxViewRoot.processDecodes(AjaxViewRoot.java:409)
at com.sun.faces.lifecycle.ApplyRequestValuesPhase.execute(ApplyRequestValuesPhase.java:78)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)


Would anyone have any idea regarding this issue?

regards,
Ioannis

[adubovsky]

Hello,

Set inside a4j filter declaration in your web.xml:

<init-param>
 <param-name>createTempFiles</param-name>
 <param-value>false</param-value>
</init-param>

[giannisapi]

hi,

i have already tried that but i had no luck. same problem again.

any other ideas please?

thanks in advance.

regards,
ioannis

[ilya_shaikovsky]

show please page and bean code.

[giannisapi]

Hi,

I paste below the sources as you asked me to.

package com.advert.sbeans;


import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;

import org.jboss.seam.annotations.Name;
import org.richfaces.event.UploadEvent;
import org.richfaces.model.UploadItem;

/**
 * @author Ilya Shaikovsky
 *
 */
@Name("fileUploadBean")
public class FileUploadBean{

 private ArrayList<File> files = new ArrayList<File>();
 private int uploadsAvailable = 5;
 private boolean autoUpload = false;
 private boolean useFlash = false;
 public int getSize() {
 if (getFiles().size()>0){
 return getFiles().size();
 }else
 {
 return 0;
 }
 }

 public FileUploadBean() {
 }

 public void paint(OutputStream stream, Object object) throws IOException {
 stream.write(getFiles().get((Integer)object).getData());
 }
 public void listener(UploadEvent event) throws Exception{
 UploadItem item = event.getUploadItem();
 File file = new File();
 file.setLength(item.getData().length);
 file.setName(item.getFileName());
 file.setData(item.getData());
 files.add(file);
 uploadsAvailable--;
 }

 public String clearUploadData() {
 files.clear();
 setUploadsAvailable(5);
 return null;
 }

 public long getTimeStamp(){
 return System.currentTimeMillis();
 }

 public ArrayList<File> getFiles() {
 return files;
 }

 public void setFiles(ArrayList<File> files) {
 this.files = files;
 }

 public int getUploadsAvailable() {
 return uploadsAvailable;
 }

 public void setUploadsAvailable(int uploadsAvailable) {
 this.uploadsAvailable = uploadsAvailable;
 }

 public boolean isAutoUpload() {
 return autoUpload;
 }

 public void setAutoUpload(boolean autoUpload) {
 this.autoUpload = autoUpload;
 }

 public boolean isUseFlash() {
 return useFlash;
 }

 public void setUseFlash(boolean useFlash) {
 this.useFlash = useFlash;
 }

}

and the xhtml page is as follows:

<!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:s="http://jboss.com/products/seam/taglib"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:rich="http://richfaces.org/rich"
xmlns:a4j="https://ajax4jsf.dev.java.net/ajax"
xmlns:a="http://richfaces.org/a4j" template="layout/template.xhtml">



<ui:define name="body">

<style>
.top {
vertical-align: top;
}
.info {
height: 202px;
overflow: auto;
}
</style>

<h:form>
<h:panelGrid columns="2" columnClasses="top,top">
<rich:fileUpload fileUploadListener="#{fileUploadBean.listener}"
maxFilesQuantity="#{fileUploadBean.uploadsAvailable}" id="upload"
immediateUpload="#{fileUploadBean.autoUpload}"
acceptedTypes="jpg, gif, png, bmp"
allowFlash="#{fileUploadBean.useFlash}">
<a4j:support event="onuploadcomplete" reRender="info" />
</rich:fileUpload>
<h:panelGroup id="info">
<rich:panel bodyClass="info">
<f:facet name="header">
<h:outputText value="Uploaded Files Info" />
</f:facet>
<h:outputText value="No files currently uploaded"
rendered="#{fileUploadBean.size==0}" />
<rich:dataGrid columns="1" value="#{fileUploadBean.files}"
var="file" rowKeyVar="row">
<rich:panel bodyClass="rich-laguna-panel-no-header">
<h:panelGrid columns="2">
<a4j:mediaOutput element="img" mimeType="#{file.mime}"
createContent="#{fileUploadBean.paint}" value="#{row}"
style="width:100px; height:100px;" cacheable="false">
<f:param value="#{fileUploadBean.timeStamp}" name="time" />
</a4j:mediaOutput>
<h:panelGrid columns="2">
<h:outputText value="File Name:" />
<h:outputText value="#{file.name}" />
<h:outputText value="File Length(bytes):" />
<h:outputText value="#{file.length}" />
</h:panelGrid>
</h:panelGrid>
</rich:panel>
</rich:dataGrid>
</rich:panel>
<rich:spacer height="3" />
<br />
<a4j:commandButton action="#{fileUploadBean.clearUploadData}"
reRender="info, upload" value="Clear Uploaded Data"
rendered="#{fileUploadBean.size>0}" />
</h:panelGroup>
</h:panelGrid>
</h:form>
</ui:define>
</ui:composition>

my web.xml is as follows:

<?xml version="1.0" ?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
version="2.5">


<init-param>
<param-name>createTempFiles</param-name>
<param-value>false</param-value>
</init-param>


<!-- RichFaces -->

<context-param>
<param-name>org.richfaces.SKIN</param-name>
<param-value>blueSky</param-value>
</context-param>

<!-- Suppress spurious stylesheets -->

<context-param>
<param-name>org.richfaces.CONTROL_SKINNING</param-name>
<param-value>disable</param-value>
</context-param>

<context-param>
<param-name>org.richfaces.CONTROL_SKINNING_CLASSES</param-name>
<param-value>disable</param-value>
</context-param>

<!-- Change load strategy to DEFAULT to disable sending scripts/styles as packs
-->

<context-param>
<param-name>org.richfaces.LoadStyleStrategy</param-name>
<param-value>ALL</param-value>
</context-param>

<context-param>
<param-name>org.richfaces.LoadScriptStrategy</param-name>
<param-value>ALL</param-value>
</context-param>

<!-- Seam -->

<listener>
<listener-class>org.jboss.seam.servlet.SeamListener</listener-class>
</listener>
<filter>
<filter-name>Seam Filter</filter-name>
<filter-class>org.jboss.seam.servlet.SeamFilter</filter-class>
<init-param>
<param-name>createTempFiles</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>maxRequestSize</param-name>
<param-value>200000</param-value>
</init-param>
</filter>


<filter>
<filter-name>Seam Filter</filter-name>
<filter-class>org.jboss.seam.web.SeamFilter</filter-class>
</filter>

<filter-mapping>
<filter-name>Seam Filter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

<filter>
<filter-name>Seam Filter</filter-name>
<filter-class>org.jboss.seam.servlet.SeamFilter</filter-class>
</filter>

<filter-mapping>
<filter-name>Seam Filter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

<servlet>
<servlet-name>Seam Resource Servlet</servlet-name>
<servlet-class>org.jboss.seam.servlet.SeamResourceServlet</servlet-class>
</servlet>

<servlet-mapping>
<servlet-name>Seam Resource Servlet</servlet-name>
<url-pattern>/seam/resource/*</url-pattern>
</servlet-mapping>

<!-- Facelets development mode (disable in production) -->

<context-param>
<param-name>facelets.DEVELOPMENT</param-name>
<param-value>true</param-value>
</context-param>

<!-- JSF -->

<context-param>
<param-name>javax.faces.DEFAULT_SUFFIX</param-name>
<param-value>.xhtml</param-value>
</context-param>

<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.seam</url-pattern>
</servlet-mapping>

<security-constraint>
<display-name>Restrict raw XHTML Documents</display-name>
<web-resource-collection>
<web-resource-name>XHTML</web-resource-name>
<url-pattern>*.xhtml</url-pattern>
</web-resource-collection>
<auth-constraint/>
</security-constraint>

</web-app>

Thanks for your help and your time.



regards,
ioannis

[giannisapi]

Hi again,

after some searching in the internet,

I deleted this :

<init-param>
<param-name>createTempFiles</param-name>
<param-value>false</param-value>
</init-param>

and added this :

<filter>
<filter-name>Seam Filter</filter-name>
<filter-class>org.jboss.seam.servlet.SeamFilter</filter-class>
<init-param>
<param-name>createTempFiles</param-name>
<param-value>false</param-value>
</init-param>
<init-param>
<param-name>maxRequestSize</param-name>
<param-value>102400</param-value>
</init-param>
</filter>

so now my web.xml is like:

<?xml version="1.0" ?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
version="2.5">

<!-- RichFaces -->

<context-param>
<param-name>org.richfaces.SKIN</param-name>
<param-value>blueSky</param-value>
</context-param>

<!-- Suppress spurious stylesheets -->

<context-param>
<param-name>org.richfaces.CONTROL_SKINNING</param-name>
<param-value>disable</param-value>
</context-param>

<context-param>
<param-name>org.richfaces.CONTROL_SKINNING_CLASSES</param-name>
<param-value>disable</param-value>
</context-param>

<!-- Change load strategy to DEFAULT to disable sending scripts/styles as packs
-->

<context-param>
<param-name>org.richfaces.LoadStyleStrategy</param-name>
<param-value>ALL</param-value>
</context-param>

<context-param>
<param-name>org.richfaces.LoadScriptStrategy</param-name>
<param-value>ALL</param-value>
</context-param>

<!-- Seam -->


<listener-class>org.jboss.seam.servlet.SeamListener</listener-class>

<!--
<filter-name>Seam Filter</filter-name>
<filter-class>org.jboss.seam.servlet.SeamFilter</filter-class>
<init-param>
<param-name>createTempFiles</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>maxRequestSize</param-name>
<param-value>200000</param-value>
</init-param> -->

<filter>
<filter-name>Seam Filter</filter-name>
<filter-class>org.jboss.seam.servlet.SeamFilter</filter-class>
<init-param>
<param-name>createTempFiles</param-name>
<param-value>false</param-value>
</init-param>
<init-param>
<param-name>maxRequestSize</param-name>
<param-value>102400</param-value>
</init-param>
</filter>




<filter-name>Seam Filter</filter-name>
<filter-class>org.jboss.seam.web.SeamFilter</filter-class>


<filter-mapping>
<filter-name>Seam Filter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>


<filter-name>Seam Filter</filter-name>
<filter-class>org.jboss.seam.servlet.SeamFilter</filter-class>


<filter-mapping>
<filter-name>Seam Filter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>


<servlet-name>Seam Resource Servlet</servlet-name>
<servlet-class>org.jboss.seam.servlet.SeamResourceServlet</servlet-class>


<servlet-mapping>
<servlet-name>Seam Resource Servlet</servlet-name>
<url-pattern>/seam/resource/*</url-pattern>
</servlet-mapping>

<!-- Facelets development mode (disable in production) -->

<context-param>
<param-name>facelets.DEVELOPMENT</param-name>
<param-value>true</param-value>
</context-param>

<!-- JSF -->

<context-param>
<param-name>javax.faces.DEFAULT_SUFFIX</param-name>
<param-value>.xhtml</param-value>
</context-param>


<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>


<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.seam</url-pattern>
</servlet-mapping>

<security-constraint>
<display-name>Restrict raw XHTML Documents</display-name>
<web-resource-collection>
<web-resource-name>XHTML</web-resource-name>
<url-pattern>*.xhtml</url-pattern>
</web-resource-collection>
<auth-constraint/>
</security-constraint>

</web-app>

what happens now is that:
once i click the upload button for a image that i have selected. The image gets uploaded straight away. The image now is nto shown in the right panel of the file upload component and i still have the null pointer exception mentioned in the first place.

Thanks a alot for your time.

Regards,
Ioannis

[ilya_shaikovsky]

I'm curious about a few filter duplicate declarations present in your web.xml.