Problem with managed beans

[rodosa]

Hi!

I'm trying to use managed beans to request parameters from my forms. But It doesn't work! This is the error:

javax.servlet.ServletException: /120/SolicitarAlta.xhtml @25,60 value="#{UserBean.dni}": Target Unreachable, identifier 'UserBean' resolved to null
 javax.faces.webapp.FacesServlet.service(FacesServlet.java:256)
 org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

root cause

javax.el.PropertyNotFoundException: /120/SolicitarAlta.xhtml @25,60 value="#{UserBean.dni}": Target Unreachable, identifier 'UserBean' resolved to null
 com.sun.facelets.el.TagValueExpression.getType(TagValueExpression.java:62)
 com.sun.faces.renderkit.html_basic.HtmlBasicInputRenderer.getConvertedValue(HtmlBasicInputRenderer.java:81)
 javax.faces.component.UIInput.getConvertedValue(UIInput.java:936)
 javax.faces.component.UIInput.validate(UIInput.java:861)
 javax.faces.component.UIInput.executeValidate(UIInput.java:1071)
 javax.faces.component.UIInput.processValidators(UIInput.java:663)
 javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1021)
 javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1021)
 javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1021)
 javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1021)
 javax.faces.component.UIForm.processValidators(UIForm.java:229)
 javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1021)
 javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1021)
 javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1021)
 javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:662)
 com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:100)
 com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:248)
 com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
 javax.faces.webapp.FacesServlet.service(FacesServlet.java:244)
 org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

I have created the class UserBean where you can find the atribute dni with the get & set method:

package com.miApp;


import java.io.Serializable;


public class UserBean implements Serializable
{
 private String dni;
 private String nombre;
 private String apellidos;
 private String password;
 private String ocupacion;
 private String mail;
 private String telf;

 public UserBean()
 {
 }

 public UserBean(String dni, String nombre, String apellidos, String ocupacion,
 String mail, String telf, String password)
 {
 this.dni = dni;
 this.nombre = nombre;
 this.apellidos = apellidos;
 this.password = password;
 this.ocupacion = ocupacion;
 this.mail = mail;
 this.telf = telf;
 this.password = password;
 }

 public void setDni(String dni)
 {
 this.dni = dni;
 }

 public String getDni()
 {
 return dni;
 }

....

Also I've added in the faces-config.xml file the managed bean:

<managed-bean>
 <managed-bean-name>userBean</managed-bean-name>
 <managed-bean-class>com.miApp.UserBean</managed-bean-class>
 <managed-bean-scope>request</managed-bean-scope>
 </managed-bean>

Does anyone know where is the error?

Thanks

[kukeltje]

wrong casing... user userBean in stead of UserBean

[rodosa]

I doesn't work with :

managed-bean>
 <managed-bean-name>userBean</managed-bean-name>
 <managed-bean-class>com.miApp.UserBean</managed-bean-class>
 <managed-bean-scope>request</managed-bean-scope>
 </managed-bean>

and it doesn't work with:

managed-bean>
 <managed-bean-name>UserBean</managed-bean-name>
 <managed-bean-class>com.miApp.UserBean</managed-bean-class>
 <managed-bean-scope>request</managed-bean-scope>
 </managed-bean>

It could be a problem of directories??? In which directory I have to put my UserBean.java file???

[kukeltje]

anything where the normal classloaders can find it (so not the processclassloader).

[rodosa]

Yes, It isn't a problem of directory ...

This problem occurs the first time when the form is displayed.... any ideas?

[kukeltje]

Yes, I have an idea.... Turn on JSF debugging and see what is going on. Correct configuration file loaded etc...

Oh... and btw... you should put a UserBean.class file somewhere not the .java file ;-)

btw2 ... is it in any way jBPM related? up to now I only see/read jsf stuff. Are they jbpm forms?

[rodosa]

When the server starts ... occurs this error:

2008-01-22 19:42:02,484 ERROR [STDERR] 22-ene-2008 19:42:02 com.sun.faces.config.ConfigureListener contextInitialized
INFO: Initializing Sun's JavaServer Faces implementation (1.2_03-b09-FCS) for context 'null'
2008-01-22 19:42:02,718 ERROR [STDERR] 22-ene-2008 19:42:02 com.sun.faces.spi.InjectionProviderFactory createInstance
ADVERTENCIA: JSF1033: Resource injection is DISABLED.

btw2 ... is it in any way jBPM related? up to now I only see/read jsf stuff. Are they jbpm forms?

Yes, I've created forms with the jbpm's editor. This creates automatically the .xhtml files & I have changed it a bit to validate and request data. The code of one form is the following:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >

<!-- the DOCTYPE means we are required to use html for a root element -->
<html xmlns="http://www.w3.org/1999/xhtml"
 xmlns:ui="http://java.sun.com/jsf/facelets"
 xmlns:c="http://java.sun.com/jstl/core"
 xmlns:h="http://java.sun.com/jsf/html"
 xmlns:f="http://java.sun.com/jsf/core"
 xmlns:tf="http://jbpm.org/jsf/tf"
 xmlns:jbpm="http://jbpm.org/jsf">

 <ui:component>

 <jbpm:dataform>

 <f:facet name="header">
 <h:outputText value="#{taskName}"/>
 </f:facet>

 <!-- TASKFORM ROWS -->
 <jbpm:datacell>
 <f:facet name="header">
 <h:outputText value="DNI"/>
 </f:facet>
 <h:inputText value="#{userBean.dni}">
 <f:validateLength minimum="8" maximum="8"/>
 <f:validateLongRange minimum="0" maximum="99999999"/>
 </h:inputText>
 </jbpm:datacell>

...

With

<h:inputText value="#{userBean.dni}">

should call the method setDni() of the UserBean. When I enter in the web console the form appears well and I can fill the data. But when I press the buttom Save of the form the error appears:

Target Unreachable, identifier 'userBean' resolved to null

[rodosa]

I forgot tell you that when I enter in the web console the following messagings appear in the console:

20:11:12,812 ERROR [STDERR] 22-ene-2008 20:11:12 com.sun.faces.lifecycle.ELResolverInitPhaseListener populateFacesELResolverForJsp
INFO: JSF1027: [null] The ELResolvers for JSF were not registered with the JSP container.

20:11:13,046 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57949jbpm-console-exp.war/WEB-INF/lib/gravel-14.jar!/META-INF/gravel-action.taglib.xml

20:11:13,062 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57945jbpm4jsf-14.jar!/META-INF/tf.taglib.xml

20:11:13,078 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57945jbpm4jsf-14.jar!/META-INF/identity.taglib.xml

20:11:13,109 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57949jbpm-console-exp.war/WEB-INF/lib/gravel-14.jar!/META-INF/gravel-compat.taglib.xml

20:11:13,125 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57947jsf-facelets.jar!/META-INF/jsf-core.taglib.xml

20:11:13,140 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57949jbpm-console-exp.war/WEB-INF/lib/jsf-facelets.jar!/META-INF/jstl-core.taglib.xml

20:11:13,140 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57947jsf-facelets.jar!/META-INF/jstl-core.taglib.xml

20:11:13,140 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57940gravel-14.jar!/META-INF/gravel-compat.taglib.xml

20:11:13,156 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57949jbpm-console-exp.war/WEB-INF/lib/jbpm4jsf-14.jar!/META-INF/tf-compat.taglib.xml

20:11:13,156 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57940gravel-14.jar!/META-INF/gravel-action.taglib.xml

20:11:13,156 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57949jbpm-console-exp.war/WEB-INF/lib/jsf-facelets.jar!/META-INF/jsf-core.taglib.xml

20:11:13,171 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57949jbpm-console-exp.war/WEB-INF/lib/jsf-facelets.jar!/META-INF/jstl-fn.taglib.xml

20:11:13,187 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57945jbpm4jsf-14.jar!/META-INF/tfl.taglib.xml

20:11:13,187 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57949jbpm-console-exp.war/WEB-INF/lib/jsf-facelets.jar!/META-INF/jsf-ui.taglib.xml

20:11:13,203 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57940gravel-14.jar!/META-INF/gravel-nav.taglib.xml

20:11:13,218 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57940gravel-14.jar!/META-INF/gravel-simple.taglib.xml

20:11:13,250 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57945jbpm4jsf-14.jar!/META-INF/core.taglib.xml

20:11:13,250 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57949jbpm-console-exp.war/WEB-INF/lib/jsf-facelets.jar!/META-INF/jsf-html.taglib.xml

20:11:13,281 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57940gravel-14.jar!/META-INF/gravel-data.taglib.xml

20:11:13,281 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57949jbpm-console-exp.war/WEB-INF/lib/gravel-14.jar!/META-INF/gravel-data.taglib.xml

20:11:13,281 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57949jbpm-console-exp.war/WEB-INF/lib/jbpm4jsf-14.jar!/META-INF/tfl-compat.taglib.xml

20:11:13,296 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57949jbpm-console-exp.war/WEB-INF/lib/jbpm4jsf-14.jar!/META-INF/tf.taglib.xml

20:11:13,296 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57947jsf-facelets.jar!/META-INF/jstl-fn.taglib.xml

20:11:13,296 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57949jbpm-console-exp.war/WEB-INF/lib/jbpm4jsf-14.jar!/META-INF/core.taglib.xml

20:11:13,296 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57947jsf-facelets.jar!/META-INF/jsf-html.taglib.xml

20:11:13,296 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57949jbpm-console-exp.war/WEB-INF/lib/gravel-14.jar!/META-INF/gravel-nav.taglib.xml

20:11:13,312 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57945jbpm4jsf-14.jar!/META-INF/tf-compat.taglib.xml

20:11:13,312 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57949jbpm-console-exp.war/WEB-INF/lib/jbpm4jsf-14.jar!/META-INF/tfl.taglib.xml

20:11:13,312 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57947jsf-facelets.jar!/META-INF/jsf-ui.taglib.xml

20:11:13,312 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57945jbpm4jsf-14.jar!/META-INF/tfl-compat.taglib.xml

20:11:13,312 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57949jbpm-console-exp.war/WEB-INF/lib/jbpm4jsf-14.jar!/META-INF/identity.taglib.xml

20:11:13,328 ERROR [STDERR] 22-ene-2008 20:11:13 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/C:/jbpm/jbpm-jpdl-3.2.2/server/server/jbpm/tmp/deploy/tmp57949jbpm-console-exp.war/WEB-INF/lib/gravel-14.jar!/META-INF/gravel-simple.taglib.xml

[kukeltje]

STFF

[rodosa]

I fixed the some of problems that I had and now it works! Thanks for your help kukeltje

[kukeltje]

Would be nice if you posted what the 'some problems' were. Others might learn from it.

[rodosa]

What I did was the following:

- My configuration listener in web.xml was wrong.
- I had an error in faces-config.xml. I didn't realized that I had the declaration of my managed-bean inside of the label. It must be outside of this label.
- I think that I had a problem with the librarys because I had repeated librarys, so I remove them.

[kukeltje]

tnx..... all not jbpm related ;-)