JSF managed bean in Maven project: Target Unreachable, identifier 'bean' resolved to null

Question

Target unreachable error is coming, somehow my bean is not initializing and the value of the bean is coming null. My helloBean reference is coming null.

POM.xml

<project xmlns="http://maven.apache.org/POM/4.0.0"           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0    http://maven.apache.org/maven-v4_0_0.xsd">
 <modelVersion>4.0.0</modelVersion>
 <groupId>com.rout.sagar</groupId>
 <artifactId>DemoMavenJAVAEE</artifactId>
 <packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>DemoMavenJAVAEE Maven Webapp</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
  <groupId>junit</groupId>
  <artifactId>junit</artifactId>
  <version>3.8.1</version>
  <scope>test</scope>
</dependency>
<dependency>
    <groupId>com.sun.faces</groupId>
    <artifactId>jsf-api</artifactId>
    <version>2.1.7</version>
</dependency>
<dependency>
    <groupId>com.sun.faces</groupId>
    <artifactId>jsf-impl</artifactId>
    <version>2.1.7</version>
</dependency>

<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>jstl</artifactId>
    <version>1.2</version>
</dependency>


    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>
        <version>2.5</version>
    </dependency>

    <dependency>
        <groupId>javax.servlet.jsp</groupId>
        <artifactId>jsp-api</artifactId>
        <version>2.1</version>
    </dependency>
            <!-- Tomcat 6 need this -->
    <dependency>
        <groupId>com.sun.el</groupId>
        <artifactId>el-ri</artifactId>
        <version>1.0</version>
    </dependency>

 </dependencies>
 <build>
<finalName>DemoMavenJAVAEE</finalName>

    </build>
</project>

HelloBean.java

package com.rout.sagar;

   import javax.faces.bean.ManagedBean;
   import javax.faces.bean.SessionScoped;
   import java.io.Serializable;

   @ManagedBean
   @SessionScoped
   public class HelloBean implements Serializable{
private static final long serialVersionUID = 1L ; 
private HelloBean hello ;

private String name ; 
public String getName() {
    return name ;
}

public void setName(String name) {
    this.name = name ;
}}

Web.XML

<?xml version="1.0" encoding="UTF-8"?>
 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee" 
    xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">

<display-name>DemoMavenJAVAEE</display-name>

<!-- Change to "Production" when you are ready to deploy -->



<context-param>
<param-name>org.apache.myfaces.annotation.SCAN_PACKAGES</param-name>
 <param-value>com.rout.sagar.HelloBean</param-value>
</context-param>
<!-- Welcome page -->
<welcome-file-list>
    <welcome-file>faces/hello.xhtml</welcome-file>
</welcome-file-list>

<!-- JSF mapping -->
<servlet>
    <servlet-name>Faces Servlet</servlet-name>
    <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>

<!-- Map these files with JSF -->
<servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>/faces/*</url-pattern>
</servlet-mapping>
<servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.jsf</url-pattern>
</servlet-mapping>
<servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.faces</url-pattern>
</servlet-mapping>
<servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.xhtml</url-pattern>
</servlet-mapping>
</web-app>

faces-config.xml

<?xml version="1.0"?>
    <faces-config xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
    http://java.sun.com/xml/ns/javaee/web-facesconfig_2_0.xsd"
    version="2.0">

    <navigation-rule>
<from-view-id>/hello.xhtml</from-view-id>
<navigation-case>
    <from-outcome>success</from-outcome>
    <to-view-id>/welcome.xhtml</to-view-id>
</navigation-case>
</navigation-rule>

</faces-config>

hello.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:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html">

 <h:head>
<title>JSF 2.0 Hello World</title>
</h:head>
<h:body>
<h3>JSF 2.0 Hello World Example - hello.xhtml</h3>
<h:form>
    <h:inputText value="#{helloBean.name}"></h:inputText>
    <h:commandButton value="Welcome Me" action="welcome"></h:commandButton>
</h:form>
</h:body>
 </html>

Welcome.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://java.sun.com/jsf/html">


<h:head>
  <title>JSF2.0 hello World    </title>
</h:head>     
  <h:body bgcolor = "red">
  <h2>JSF 2.0 Hello World Example welcome.xhtml</h2>
  <h2>Welcome #{helloBean.name}</h2>
  </h:body>
  </html>

Folder Structure in Eclipse

score 1 · Accepted Answer · edited Jun 20 '20 at 09:12

You placed the Java source file of the backing bean in src/main/resources instead of in src/main/java. So the Java source file won't be compiled into a .class file in /WEB-INF/lib during the build of the WAR file.

Fix your wrong Maven project structure. I think the red cross on the project icon is also hinting to the problem in the project structure.

JSF managed bean in Maven project: Target Unreachable, identifier 'bean' resolved to null

1 Answers1

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