[JSF] Ho registrato un managed bean ma a runtime non esiste

[robyonrails]

Consideriamo che la directory root è la directory della mia applicazione che risiede in tomcat/webapps.

/WEB-INF/faces-config.xml

...
		<managed-bean>
				<managed-bean-name>UserBean</managed-bean-name>
				<managed-bean-class>com.jsftest.UserBean</managed-bean-class>
				<managed-bean-scope>session</managed-bean-scope>
		</managed-bean>
...

Il sorgente Java del bean è in /WEB-INF/src/com/jsftest/UserBean.java.
Il file compilato è /WEB-INF/classes/com/jsftest/UserBean.class.

Cerco di usare il managed bean attraverso:

	<f:view>
	
		<h:form>
		
			<h:inputText value="#{UserBean.username}" />


			<h:commandButton value="click here" />
		
		</h:form>
	
	</f:view>

Ma quando clicco sul bottone, PAM! Errore:

exception

javax.servlet.ServletException: /prova.jsp(23,3) '#{UserBean.username}' Target Unreachable, identifier 'UserBean' resolved to null
	javax.faces.webapp.FacesServlet.service(FacesServlet.java:256)

root cause

org.apache.jasper.el.JspPropertyNotFoundException: /prova.jsp(23,3) '#{UserBean.username}' Target Unreachable, identifier 'UserBean' resolved to null
	org.apache.jasper.el.JspValueExpression.getType(JspValueExpression.java:61)
	com.sun.faces.renderkit.html_basic.HtmlBasicInputRenderer.getConvertedValue(HtmlBasicInputRenderer.java:129)
	javax.faces.component.UIInput.getConvertedValue(UIInput.java:943)
	javax.faces.component.UIInput.validate(UIInput.java:868)
	javax.faces.component.UIInput.executeValidate(UIInput.java:1078)
	javax.faces.component.UIInput.processValidators(UIInput.java:670)
	javax.faces.component.UIForm.processValidators(UIForm.java:229)
	javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1039)
	javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:672)
	com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:100)
	com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:266)
	com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:132)
	javax.faces.webapp.FacesServlet.service(FacesServlet.java:244)

Dov'è che sbaglio?

Ciao!

[robyonrails]

Ora, senza alcuna modifica (probabilmente per il riavvio del server), mi dà un errore diverso e non mi visualizza neanche il form:

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: com.jsftest.UserBean
	javax.faces.webapp.FacesServlet.service(FacesServlet.java:256)

root cause

java.lang.ClassNotFoundException: com.jsftest.UserBean
	org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1358)
	org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)
	java.beans.Beans.instantiate(Unknown Source)
	java.beans.Beans.instantiate(Unknown Source)
	com.sun.faces.config.ManagedBeanFactoryImpl.newInstance(ManagedBeanFactoryImpl.java:310)
	com.sun.faces.application.ApplicationAssociate.createAndMaybeStoreManagedBeans(ApplicationAssociate.java:521)
	com.sun.faces.el.ManagedBeanELResolver.getValue(ManagedBeanELResolver.java:83)
	javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53)
	com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:58)
	org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:45)
	org.apache.el.parser.AstValue.getValue(AstValue.java:86)
	org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
	org.apache.jasper.el.JspValueExpression.getValue(JspValueExpression.java:101)
	javax.faces.component.UIOutput.getValue(UIOutput.java:176)
	com.sun.faces.renderkit.html_basic.HtmlBasicInputRenderer.getValue(HtmlBasicInputRenderer.java:100)
	com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.getCurrentValue(HtmlBasicRenderer.java:282)
	com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeEnd(HtmlBasicRenderer.java:208)
	javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:847)
	javax.faces.component.UIComponent.encodeAll(UIComponent.java:893)
	javax.faces.render.Renderer.encodeChildren(Renderer.java:137)
	javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:827)
	javax.faces.component.UIComponent.encodeAll(UIComponent.java:883)
	javax.faces.component.UIComponent.encodeAll(UIComponent.java:889)
	com.sun.faces.application.ViewHandlerImpl.doRenderView(ViewHandlerImpl.java:258)
	com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:176)
	com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:108)
	com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:266)
	com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:159)
	javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)

[R@ve M@ster]

Posta il codice di UserBean

[robyonrails]

package com.testjsf;

public class UserBean{

	private String username;
	private String password;

	public UserBean(){ }

	public String getUsername(){
		return username;
	}
	
	public String getPassword(){
		return password;
	}
	
	public void setUsername(String username){
		this.username = username;
	}
	
	public void setPassword(String password){
		this.password = password;
	}
	
}

Le versioni che uso sono JSF 1.2 e Tomcat 6.0.

[R@ve M@ster]

<managed-bean-class>com.jsftest.UserBean</managed-bean-class>

package com.testjsf;

public class UserBean{

[robyonrails]

Ahaahahaha.

Incredibile...

Grazie! (e dire che ci guardavo apposta a quei particolari )