Probleme avec <rich:fileUpload>

**hibao** · 15/10/2008, 15h27

Bonjour,

J'ai un problème lorsque j'essai de charger des fichiers, une exception java.lang.NullPointerException se déclenche au moment du chargement du fichier.

Ma première question est la suivante, est ce que la valeur de l'attribut fileUploadListener doit correspondre à un attribut d'un bean ou à une méthode ?

voici la partie de code que j'ai utiliser pour faire l'upload :

Code :

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<rich:fileUpload acceptedTypes="jpg, gif, png, bmp"
            fileUploadListener="{fileUploadBean.listener}"
             maxFilesQuantity="#{fileUploadBean.uploadsAvailable}"	 
             immediateUpload="#{fileUploadBean.autoUpload}"
	  uploadData="#{fileUploadBean.files}"
             id="upload" listHeight="60px" listWidth="250px"
             clearControlLabel="Annuler" uploadControlLabel="Charger"
             clearAllControlLabel="Effacer tous" doneLabel="Succés" 
             stopControlLabel="Arreter" addControlLabel="Ajouter...">
               <a4j:support event="onuploadcomplete" /> 
</rich:fileUpload>

Le fichier FileUploadBean :

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package file;
 
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
 
import org.richfaces.event.UploadEvent;
import org.richfaces.model.UploadItem;
 
 
public class FileUploadBean{
 
	private ArrayList<File> files = new ArrayList<File>();
	private int uploadsAvailable = 1;
	private boolean autoUpload = false;
	private boolean useFlash = false;
 
 
	public int getSize() {
		if (getFiles().size()>0){
			return getFiles().size();
		}else 
		{
			return 0;
		}
	}
 
	public FileUploadBean() {
	}
 
	public synchronized void paint(OutputStream stream, Object object) throws IOException {
		stream.write(getFiles().get((Integer)object).getData());
	}
	public synchronized 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;
	}
 
}

Le fichier File :

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package file;
 
public class File {
 
	private String Name;
	private String mime;
	private long length;
	private byte[] data;
 
 
 
	public byte[] getData() {
		return data;
	}
	public void setData(byte[] data) {
		this.data = data;
	}
 
	public String getName() {
		return Name;
	}
	public void setName(String name) {
		Name = name;
		int extDot = name.lastIndexOf('.');
		if(extDot > 0){
			String extension = name.substring(extDot +1);
			if("bmp".equals(extension)){
				mime="image/bmp";
			} else if("jpg".equals(extension)){
				mime="image/jpeg";
			} else if("gif".equals(extension)){
				mime="image/gif";
			} else if("png".equals(extension)){
				mime="image/png";
			} else {
				mime = "image/unknown";
			}
		}
	}
 
	public long getLength() {
		return length;
	}
	public void setLength(long length) {
		this.length = length;
	}
 
	public String getMime(){
		return mime;
	}
}

Finalement j'ai rajouté deux paramètres dans le filter au niveau du fichier web.xml :

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<filter>
  <display-name>RichFaces Filter</display-name>
  <filter-name>richfaces</filter-name>
  <filter-class>org.ajax4jsf.Filter</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>20000000</param-value>
  </init-param>
 </filter>

**hibao** · 15/10/2008, 16h03

Dosolé, j'ai oublié de mettre le descriptif de l'exception :

Code :

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[lifecycle] org.apache.jasper.el.JspELException: /index.jsp(121,9) '#{fileUploadBean.listener}' java.lang.NullPointerException
javax.faces.el.EvaluationException: org.apache.jasper.el.JspELException: /index.jsp(121,9) '#{fileUploadBean.listener}' java.lang.NullPointerException
	at org.richfaces.webapp.taglib.MethodBindingMethodExpressionAdaptor.invoke(MethodBindingMethodExpressionAdaptor.java:56)
	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)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:177)
	at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:267)
	at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:340)
	at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:507)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:189)
	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:91)
	at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:92)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:325)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:828)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:601)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
	at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.jasper.el.JspELException: /index.jsp(121,9) '#{fileUploadBean.listener}' java.lang.NullPointerException
	at org.apache.jasper.el.JspMethodExpression.invoke(JspMethodExpression.java:77)
	at org.richfaces.webapp.taglib.MethodBindingMethodExpressionAdaptor.invoke(MethodBindingMethodExpressionAdaptor.java:52)
	... 34 more
Caused by: java.lang.NullPointerException
	at file.FileUploadBean.listener(FileUploadBean.java:37)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.apache.el.parser.AstValue.invoke(AstValue.java:170)
	at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276)
	at org.apache.jasper.el.JspMethodExpression.invoke(JspMethodExpression.java:68)
	... 35 more
14:46:41,809 ERROR [lifecycle] JSF1054: (Phase ID: APPLY_REQUEST_VALUES 2, View ID: /index.jsp) Exception thrown during phase execution: javax.faces.event.PhaseEvent[source=com.sun.faces.lifecycle.LifecycleImpl@3a2471]
14:46:41,809 ERROR [BaseXMLFilter] Exception in the filter chain
javax.servlet.ServletException: org.apache.jasper.el.JspELException: /index.jsp(121,9) '#{fileUploadBean.listener}' java.lang.NullPointerException
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:277)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:177)
	at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:267)
	at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:340)
	at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:507)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:189)
	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:91)
	at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:92)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:325)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:828)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:601)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
	at java.lang.Thread.run(Unknown Source)
Caused by: javax.faces.el.EvaluationException: org.apache.jasper.el.JspELException: /index.jsp(121,9) '#{fileUploadBean.listener}' java.lang.NullPointerException
	at org.richfaces.webapp.taglib.MethodBindingMethodExpressionAdaptor.invoke(MethodBindingMethodExpressionAdaptor.java:56)
	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)
	... 25 more
Caused by: org.apache.jasper.el.JspELException: /index.jsp(121,9) '#{fileUploadBean.listener}' java.lang.NullPointerException
	at org.apache.jasper.el.JspMethodExpression.invoke(JspMethodExpression.java:77)
	at org.richfaces.webapp.taglib.MethodBindingMethodExpressionAdaptor.invoke(MethodBindingMethodExpressionAdaptor.java:52)
	... 34 more
Caused by: java.lang.NullPointerException
	at file.FileUploadBean.listener(FileUploadBean.java:37)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.apache.el.parser.AstValue.invoke(AstValue.java:170)
	at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276)
	at org.apache.jasper.el.JspMethodExpression.invoke(JspMethodExpression.java:68)
	... 35 more
14:46:41,887 ERROR [[Faces Servlet]] "Servlet.service()" pour la servlet Faces Servlet a gï¿½nï¿½rï¿½ une exception
java.lang.NullPointerException
	at file.FileUploadBean.listener(FileUploadBean.java:37)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.apache.el.parser.AstValue.invoke(AstValue.java:170)
	at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276)
	at org.apache.jasper.el.JspMethodExpression.invoke(JspMethodExpression.java:68)
	at org.richfaces.webapp.taglib.MethodBindingMethodExpressionAdaptor.invoke(MethodBindingMethodExpressionAdaptor.java:52)
	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)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:177)
	at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:267)
	at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:340)
	at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:507)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:189)
	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:91)
	at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:92)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:325)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:828)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:601)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
	at java.lang.Thread.run(Unknown Source)

J'utilise la librairie 3.2.2GA

**iviath** · 15/10/2008, 16h13

Ceci doit pointer vers une méthode, un listener plus précisément.
Voici la méthode qui doit remplir se rôle.

Code :

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public void listener(UploadEvent event)
{
    // event contient toutes les informations sur l 'événement et 
}

PS: pour que ca marche correctement il faut avoir correctement implémenter les listener de richfaces et de JSF.

**solarien** · 15/10/2008, 17h20

tiens voila un exemple qui fonctionne

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public class FileBean implements FileUploadListener, Serializable{
 
	private static Logger logger = Logger.getLogger(FileBean.class);
	private File file = new File();
	private String fileDownloadedAudio;
	public FileBean(){}
 
	public String getFileDownloadedAudio(){
		return fileDownloadedAudio;
	}
	public void setFileDownloadedAudio(String fileDownloadedAudio){
		this.fileDownloadedAudio = fileDownloadedAudio;
	}
 
	public void listener(UploadEvent event)throws IOException{
		logger.debug("Listener de FILEBEAN");
		String path;
		SimpleTreeBean simpleTreeBean= (SimpleTreeBean) FacesContext.getCurrentInstance().getApplication().getELResolver().getValue(FacesContext.getCurrentInstance().getELContext(), null, "simpleTreeBean");
		file.setLength(event.getUploadItem().getData().length);
		file.setName(event.getUploadItem().getFileName());
		file.setData(event.getUploadItem().getData());
		try
		{
			path = ManagerDirectories.createPath(simpleTreeBean.getIdService(), simpleTreeBean.getVersionCourant().getName(), file.getName());
			fileDownloadedAudio = path;
			java.io.File f = new java.io.File(path);
			if(f.exists())
			{
				logger.debug("le fichier existe déja");
			}
			else
			{
				java.io.FileOutputStream myfile = new java.io.FileOutputStream(path);
				java.io.DataOutputStream sortie = new java.io.DataOutputStream(myfile);
				sortie.write(file.getData());
			}
			logger.debug("Le chemin du fichier telechargé est " + path);
		}
		catch(IOException e)
		{
			e.printStackTrace();
		}
	}

**hibao** · 15/10/2008, 18h42

le problème c'est que la fonction "item.getData()" retourne la valeur null.
Donc ma fonction listener est bien appelée. c'est au niveau de l'appel cité plus haut que l'exception se déclenche. est ce que quelqu'un a une idée sur ce problème ?
Merci.

**solarien** · 16/10/2008, 09h31

dsl

Probleme avec <rich:fileUpload>

JSF Java

Vue hybride

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