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I just started using JSF, and i encountered this problem when submitting the index.xhtml:

/index.xhtml @11,65 value="#{user.name}": Target Unreachable, identifier 'User' resolved to null

Here are my 3 files: index.xhtml

 <?xml version='1.0' encoding='UTF-8' ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://xmlns.jcp.org/jsf/html"> <h:head> <title>Facelet Title</title> </h:head> <h:body> Hello from Facelets <h:form> <h:inputText id="inputText" value="#{user.name}" /> <h:commandButton id="submit" value="Submit" action="home"/> </h:form> </h:body> </html>

home.xhtml

<?xml version='1.0' encoding='UTF-8' ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://xmlns.jcp.org/jsf/html"> <h:head> <title>Home</title> </h:head> <h:body> Welcome. <h:form> <h4>#{user.name}</h4> </h:form> </h:body> </html>

User.java

package com.jsf; import javax.faces.bean.ManagedBean; import javax.faces.bean.SessionScoped; @ManagedBean(name = "user") @SessionScoped public class User { private String name = ""; public String getName() { return name; } public void setName(String name) { this.name = name; } }

and faces-config.xml

<?xml version='1.0' encoding='UTF-8'?> <faces-config version="2.2" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-facesconfig_2_2.xsd"> <managed-bean> <managed-bean-name>User</managed-bean-name> <managed-bean-class>com.jsf.User</managed-bean-class> <managed-bean-scope>request</managed-bean-scope> </managed-bean>. </faces-config>

web.xml

<?xml version="1.0" encoding="UTF-8"?> <web-app version="3.1" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"> <context-param> <param-name>javax.faces.PROJECT_STAGE</param-name> <param-value>Development</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>/faces/*</url-pattern> </servlet-mapping> <session-config> <session-timeout> 30 </session-timeout> </session-config> <welcome-file-list> <welcome-file>faces/index.xhtml</welcome-file> </welcome-file-list> </web-app>

Im using Netbeans 8, and JSF 2.2 I know there are many other questions with the same title, but none of them worked.

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  • 1
    Why are you using both annotations and a faces-config.xml to specify your bean class? And why are the scopes are different. Commented Jul 3, 2014 at 14:54
  • i added the faces-config.xml after searching on google, but that didn't seem to work either :/ Commented Jul 3, 2014 at 14:54
  • 1
    When do you get this error, at opening index.xhtml or home.xhtml? Besides that, you should only configure the managed bean using annotations or XML in faces-config, not both. Commented Jul 3, 2014 at 14:55
  • 2
    Ok, everything looks fine except for the double configuration of the managed bean. Please remove it, clean your project, re build it, generate a new war file, redeploy it and test again. Commented Jul 3, 2014 at 15:00
  • 1
    awh .. it worked .. dont know what i did there, but i had the same error before i add the faces-config .. i removed it and rebuild, it works now, thank you. Commented Jul 3, 2014 at 15:01

2 Answers 2

Reset to default
7

I want to share my experience with this Exception. My JSF 2.2 application worked fine with WildFly 8.0, but one time, when I started server, i got this "Target Unreacheable" exception. Actually, there was no problem with JSF annotations or tags.

Only thing I had to do was cleaning the project. After this operation, my app is working fine again.

I hope this will help someone!

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1 Comment

One day I was debugging and my working project started throwing this error, out of the blue. Restarting the Glassfish server fixed it.
2

The problem seems related to the double configuration of your managed bean with the same name:

  • Annotation configuration by using @ManagedBean and @SessionScoped annotations on the class called user.
  • XML configuration in faces-config.xml file through the <managed-bean> node called User.

You should have a single configuration per managed bean i.e. the name. In this case, since you basically have the same managed bean configured twice, just remove one of the configurations. I recommend removing the XML configuration since the annotation configuration is more readable and understandable.

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