Error creating bean with name 'empresasDAO': Injection of autowired dependencies failed

Question

I am having a problem with spring , I am a newbie using this framework with Hibernate , SQL and Maven , I am following a tutorial but when launching the app in the server I have this error message.

Spring Console

Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'empresasDAO': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: public org.hibernate.SessionFactory com.altobri.conta.dao.EmpresasDAOImpl.sessionFactory; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in class path resource [applicationContext.xml]: Cannot resolve reference to bean 'dataSource' while setting bean property 'dataSource'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [applicationContext.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'root' of bean class [org.apache.commons.dbcp.BasicDataSource]: Bean property 'root' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:288)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1116)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:626)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
at com.altobri.conta.App.main(App.java:13)

EmpresasDAO

package com.altobri.conta.dao;
import com.altobri.conta.model.Empresas;

public interface EmpresasDAO{

    void persistEmpresas(Empresas empresas);

    Empresas findEmpresasById(int clave);

    void updateEmpresas(Empresas empresas);

    void deleteEmpresas(Empresas empresas);

}

EmpresasDAOImpl

package com.altobri.conta.dao;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;

import com.altobri.conta.model.Empresas;

@Repository("empresasDAO")
public class EmpresasDAOImpl implements EmpresasDAO {

    @Autowired
    public SessionFactory sessionFactory;

    @Override
    public void persistEmpresas(Empresas empresas) {
        sessionFactory.getCurrentSession().persist(empresas);
    }

    @Override
    public Empresas findEmpresasById(int clave) {
        return (Empresas) sessionFactory.getCurrentSession().get(
                Empresas.class, clave);
    }

    @Override
    public void updateEmpresas(Empresas empresas) {
        sessionFactory.getCurrentSession().update(empresas);
    }

    @Override
    public void deleteEmpresas(Empresas empresas) {
        sessionFactory.getCurrentSession().delete(empresas);
    }
}

App.java

package com.altobri.conta;

import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.altobri.conta.model.Empresas;
import com.altobri.conta.service.EmpresasService;

public class App {

    public static void main(String[] args) {
        System.out.println("load context");
        ConfigurableApplicationContext context = new ClassPathXmlApplicationContext(
                "applicationContext.xml");
        Empresas em = new Empresas();
        em.setClave(123);
        em.setNombre("John");

        EmpresasService emService = (EmpresasService) context
                .getBean("empresasService");
        emService.persistEmpresas(em);
        System.out.println("Updated age :"
                + emService.findEmpresasById(123).getNombre());

        emService.updateEmpresas(em);
        System.out.println("Updated age :"
                + emService.findEmpresasById(123).getClave());
        emService.deleteEmpresas(em);
        context.close();
    }

}

EmpresasService

package com.altobri.conta.service;
import com.altobri.conta.model.Empresas;

public interface EmpresasService {

    void persistEmpresas(Empresas empresas);

    Empresas findEmpresasById(int clave);

    void updateEmpresas(Empresas empresas);

    void deleteEmpresas(Empresas empresas);
}

EmpresasServiceImpl

package com.altobri.conta.service;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.altobri.conta.dao.EmpresasDAO;
import com.altobri.conta.model.Empresas;

@Service("empresasService")
public class EmpresasServiceImpl implements EmpresasService{

    @Autowired
    EmpresasDAO empresasDAO;

    @Override
    @Transactional
    public void persistEmpresas(Empresas empresas) {
        empresasDAO.persistEmpresas(empresas);
    }

    @Override
    @Transactional
    public void updateEmpresas(Empresas empresas) {
        empresasDAO.updateEmpresas(empresas);
    }

    @Override
    @Transactional
    public Empresas findEmpresasById(int clave) {
        return empresasDAO.findEmpresasById(clave);
    }

    @Override
    @Transactional
    public void deleteEmpresas(Empresas empresas) {
        empresasDAO.deleteEmpresas(empresas);
    }

}

applicationContext.xml

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
xmlns:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:task="http://www.springframework.org/schema/task"
xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd 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/jee http://www.springframework.org/schema/jee/spring-jee-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.2.xsd">

   <context:component-scan base-package="com.altobri.conta.*" />
   <context:component-scan base-package="com.springHibernate" />
   <context:annotation-config />

   <tx:annotation-driven/>

   <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"destroymethod="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/empresas" />
<property name="root" value="root" />
<property name="password" value="" />
</bean>

    <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
    <property name="dataSource" ref="dataSource"></property>
     <property name="annotatedClasses">
            <list>
                <value>com.altobri.conta.model.Empresas</value>
            </list>
        </property>
    <property name="hibernateProperties">
      <props>
        <prop 
         key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>
        <prop key="hibernate.show_sql">true</prop>
      </props>
    </property>
</bean>

<bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager" 
p:Factory-ref="sessionFactory">
</bean>
</beans>

Answer 1

It seems you have a problem with your dataSource

...Error creating bean with name 'dataSource' defined in class path resource [applicationContext.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'root' of bean class [org.apache.commons.dbcp.BasicDataSource]: Bean property 'root' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?

Try something like this for your datasource:

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
    <property name="driverClassName" value="com.mysql.jdbc.Driver" />
    <property name="url" value="jdbc:mysql://[HostAndPort]/[DatabaseName]" />
    <property name="username" value="[yourUsernameGoesHere]" />
    <property name="password" value="[yourPasswordGoesHere]" />
    <property name="initialSize" value="[initialSize]" />
    <property name="maxActive" value="[maxActiveConnectionsGoesHere]" />
</bean>

If you don't use MySQL as DBS, you have to change the driverClassName and the url of course.

EDIT

It's like expected. You configured your datasource wrong: Write

<property name="username" value="root" />

instead of

<property name="root" value="root" />