JSF 2.2 Target Unreachable, identifier [whatever] resolved to null - spring

Question

I am trying to integrate JSF 2.2 with Spring 4 and with Spring Data JPA (Hibernate). I am getting the following exception when I press the save button:
javax.el.PropertyNotFoundException: /index.xhtml #14,66 value="#{registerEmployee.employee.employeeName}": Target Unreachable, identifier [registerEmployee] resolved to null
Eclipse: Oxygen.3a Release (4.7.3a)
Java: 1.8.0_171
Server: apache-tomee-plume-7.0.4
I have tried to search a solution here in Stackoverflow but I could not resolve my problem with those unfortunately. I've been trying to figure out for 5 days now what could be wrong.
This only happens when I use LocalContainerEntityManagerFactoryBean because of the Spring Data JPA. All the mentioned classes (except applicationContext.xml) is the same in a different projects where its working. The difference between those project that (the working one) is using:
org.springframework.orm.hibernate5.LocalSessionFactoryBean
with a mappingResources property:
<property name="mappingResources">
<list>
<value>domain-classes.hbm.xml</value>
</list>
</property>
Where #Autowired is used the import is: org.springframework.beans.factory.annotation.Autowired;
Where #Component is used the import is: org.springframework.stereotype.Component;
Where #Transactional is used the import is: org.springframework.transaction.annotation.Transactional;
Where #ManagedBean is used the import is:
javax.faces.bean.ManagedBean;
Where #ManagedProperty is used the import is:
javax.faces.bean.ManagedProperty;
Where #SessionScoped is used the import is:
javax.faces.bean.SessionScoped;
I have also tried to not use #Autowired only #ManagedProperty but I get the same exception.
Here is my Employee entity class:
import java.util.Date;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
import org.springframework.stereotype.Component;
#Entity
#Table(name = "employee")
#Component
public class Employee{
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "EMP_ID")
private long employeeId;
#Column(name = "EMP_NAME")
private String employeeName;
#Column(name = "EMP_HIRE_DATE")
private Date employeeHireDate;
#Column(name = "EMP_SALARY")
private double employeeSalary;
public long getEmployeeId() {
return employeeId;
}
public void setEmployeeId(long employeeId) {
this.employeeId = employeeId;
}
public String getEmployeeName() {
return employeeName;
}
public void setEmployeeName(String employeeName) {
this.employeeName = employeeName;
}
public Date getEmployeeHireDate() {
return employeeHireDate;
}
public void setEmployeeHireDate(Date employeeHireDate) {
this.employeeHireDate = employeeHireDate;
}
public double getEmployeeSalary() {
return employeeSalary;
}
public void setEmployeeSalary(double employeeSalary) {
this.employeeSalary = employeeSalary;
}
}
The managedbean, RegisterEmployee:
#ManagedBean(name = "registerEmployee")
#SessionScoped
public class RegisterEmployee implements Serializable {
#ManagedProperty("#{employeeService}")
private EmployeeService employeeService;
#Autowired
private Employee employee;
public EmployeeService getEmployeeService() {
return employeeService;
}
public void setEmployeeService(EmployeeService employeeService) {
this.employeeService = employeeService;
}
public Employee getEmployee() {
return employee;
}
public void setEmployee(Employee employee) {
this.employee = employee;
}
public String register() {
// Calling Business Service
employeeService.register(employee);
// Add message
FacesContext.getCurrentInstance().addMessage(null,
new FacesMessage("The Employee "+this.employee.getEmployeeName()+" Is Registered Successfully"));
return "";
}
}
The EmployeeRepository:
public interface EmployeeRepository extends JpaRepository<Employee, Integer>{
}
The EmployeeService:
#Component
public class EmployeeService implements Serializable {
#Autowired
private EmployeeRepository employeeRepository;
public EmployeeRepository getEmployeeRepository() {
return employeeRepository;
}
public void setEmployeeRepository(EmployeeRepository employeeRepository) {
this.employeeRepository = employeeRepository;
}
#Transactional
public void register(Employee employee) {
employeeRepository.save(employee);
}
}
The POM.xml
<repositories>
<repository>
<id>prime-repo</id>
<name>PrimeFaces Maven Repository</name>
<url>http://repository.primefaces.org</url>
<layout>default</layout>
</repository>
</repositories>
<dependencies>
<!-- Expression Language -->
<dependency>
<groupId>javax.el</groupId>
<artifactId>javax.el-api</artifactId>
<version>3.0.0</version>
</dependency>
<!-- JSTL Library -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.1.2</version>
</dependency>
<!-- Servlet -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<!-- Java Server Faces Implementation -->
<dependency>
<groupId>com.sun.faces</groupId>
<artifactId>jsf-impl</artifactId>
<version>2.2.4</version>
</dependency>
<!-- Java Server Faces API -->
<dependency>
<groupId>com.sun.faces</groupId>
<artifactId>jsf-api</artifactId>
<version>2.2.4</version>
</dependency>
<!-- Primefaces Version 5 -->
<dependency>
<groupId>org.primefaces</groupId>
<artifactId>primefaces</artifactId>
<version>5.0</version>
</dependency>
<!-- Primefaces Theme Library -->
<dependency>
<groupId>org.primefaces.themes</groupId>
<artifactId>blitzer</artifactId>
<version>1.0.10</version>
</dependency>
<!-- Hibernate Core -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.2.10.Final</version>
</dependency>
<!-- Hibernate Entity Manager -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.2.10.Final</version>
</dependency>
<!-- MySQL Connector Java -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.44</version>
</dependency>
<!-- Spring Context -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.16.RELEASE</version>
</dependency>
<!-- Spring ORM -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>4.3.16.RELEASE</version>
</dependency>
<!-- Spring Web -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.3.16.RELEASE</version>
</dependency>
<!-- Spring Data JPA -->
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>2.0.5.RELEASE</version>
</dependency>
<!-- LOG4J -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<!-- JUnit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<finalName>Nova</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
The applicationContext.xml:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:jpa="http://www.springframework.org/schema/data/jpa"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/data/jpa
http://www.springframework.org/schema/data/jpa/spring-jpa.xsd
">
<!-- Enable Spring annotations -->
<context:annotation-config />
<!-- Scans for repositories that will be auto-registered -->
<jpa:repositories base-package="where.repositories.are.located" />
<!-- Scans for components (beans) which are managed by Spring -->
<context:component-scan base-package="where.services.are.located, where.models.are.located" />
<!-- MySQL Datasource-->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/nova" />
<property name="username" value="username" />
<property name="password" value="supersecretpassword" />
</bean>
<!-- EntityManagerFactory and JPAVendorAdapter -->
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"
p:packagesToScan="where.models.are.located"
p:dataSource-ref="dataSource"
>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="showSql" value="true"/>
<property name="generateDdl" value="false"/>
<property name="databasePlatform" value="org.hibernate.dialect.MySQL5Dialect"/>
</bean>
</property>
</bean>
<!-- Transaction Manager -->
<tx:annotation-driven transaction-manager="transactionManager" />
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
The faces-config.xml:
<?xml version="1.0" encoding="UTF-8"?>
<faces-config 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"
version="2.2">
<application>
<el-resolver>org.springframework.web.jsf.el.SpringBeanFacesELResolver</el-resolver>
</application>
</faces-config>
The web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app 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"
version="3.1">
<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>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.xhtml</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.xhtml</welcome-file>
</welcome-file-list>
<context-param>
<param-name>javax.faces.CONFIG_FILES</param-name>
<param-value>WEB-INF/faces-config.xml</param-value>
</context-param>
<context-param>
<param-name>javax.faces.PROJECT_STAGE</param-name>
<param-value>Development</param-value>
</context-param>
<context-param>
<description>State saving method: 'client' or 'server' (=default). See JSF Specification 2.5.2</description>
<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
<param-value>client</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<listener>
<listener-class>com.sun.faces.config.ConfigureListener</listener-class>
</listener>
The index.xhtml:
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:p="http://primefaces.org/ui">
<h:head>
<script name="jquery/jquery.js" library="primefaces"></script>
<title>Register Employee</title>
</h:head>
<h:form>
<p:growl id="messages"></p:growl>
<p:panelGrid columns="2">
<p:outputLabel value="Enter Employee Name:"></p:outputLabel>
<p:inputText value="#{registerEmployee.employee.employeeName}">
</p:inputText>
<p:outputLabel value="Enter Employee Hire Date:"></p:outputLabel>
<p:calendar value="#{registerEmployee.employee.employeeHireDate}">
</p:calendar>
<p:outputLabel value="Enter Employee Salary:"></p:outputLabel>
<p:inputText value="#{registerEmployee.employee.employeeSalary}">
</p:inputText>
</p:panelGrid>
<p:commandButton value="Register" action="#{registerEmployee.register}"
update="messages"></p:commandButton>
</h:form>
</html>

Answer 1

It is a bad pattern to #Autowired or #Inject classes which are annotated with #Entity.