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jsfjsf-2cdimanaged-beanglassfish-4.1

After switching @ManagedBean to @Named: javax.el.PropertyNotFoundException: Target Unreachable, identifier 'person' resolved to null

I am just testing out this JSF page, so I don't set the action attribute in the <h:commandButton/>. This is a very simple form with 3 input boxes for First Name, Last Name, and Email, and one button called Save. Every time I click that button, I receive this error 

javax.el.PropertyNotFoundException: /index.xhtml @19,106 value="#{person.firstName}": Target Unreachable, identifier 'person' resolved to null

but if I annotate my JavaBean @ManagedBean, then the form go through just fine, but every time I switch back to using @Named Bean, I receive that error again. I have tried some of the suggestions I found on this site such as restarting the server, checking the presence of the getters, but those did not help. 

<?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://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core">
    <h:head>
        <meta charset="UTF-8" />
        <title>Simple Form Created Using Facelets</title>
    </h:head>

    <h:body>
        <h:messages/>
        <h:form>
            <h:panelGrid columns="2" columnClasses="rightColumn, leftColumn">

                <h:outputLabel for="firstName" value="First Name:" />
                <h:inputText id="firstName" value="#{person.firstName}"
                             label="First Name"/>

                <h:outputLabel for="lastName" value="Last Name:" />
                <h:inputText id="lastName" value="#{person.lastName}" label="Last Name"/>

                <h:outputLabel for="email" value="Email:"/>
                <h:inputText id="email" value="#{person.email}" label="Email" />

                <h:panelGroup />
                <h:commandButton value="Submit"/>
            </h:panelGrid>
        </h:form>
    </h:body>
</html>

This is my JavaBean class

import javax.annotation.PostConstruct;
import javax.faces.bean.RequestScoped;
import javax.inject.Named;

@Named
@RequestScoped
public class Person {

    private String firstName = "empty";
    private String lastName = "empty";
    private String email = "empty";

    public void Person() {}

    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }
}

This is the web.xml file.

<?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>
Solution

  • This is the best answer to my problem LINK . Also, cdi-1.2 jar file is not available in GS 4.1 for some reason, that is why the package javax.enterprise.* was not present in my Netbeans, I had to manually download that jar from http://cdi-spec.org/. Now everything works fine including DI. And I did not have to create any configuration files to get it to work either.