Spring 3.1.2.RELEASE + Hibernate 4.1.7.Final in Struts2

[pirzada]

Hi,

First time here. Learning and Struggling. I have Struts2 web app with Spring for DI & Hibernate. It was working fine with Hibernate3 now want to make it work with Spring 3.1.2.RELEASE + Hibernate 4.1.7.

I have tried alot with different Maven dependencies for SPRING but no success. Below is error and my application configuration. Someone please help

SEVERE: Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.aop.config.internalAutoProxyCreator': Instantiation of bean failed; nested exception is java.lang.NoClassDefFoundError: org/springframework/core/convert/support/PropertyTypeDescriptor
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:965)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:911)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
	at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:710)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:410)
	at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:276)
	at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:197)
	at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:47)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4791)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5285)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.NoClassDefFoundError: org/springframework/core/convert/support/PropertyTypeDescriptor
	at

MAVEN pom.xml

    <properties>
        <java.version>1.6</java.version>
        <slf4j.version>1.6.6</slf4j.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <hibernate.core.version>4.1.7.Final</hibernate.core.version>
        <spring.version>3.1.2.RELEASE</spring.version>
    </properties>

  <dependencies>
  	
	<!-- jUnit -->
      <dependency>
          <groupId>junit</groupId>
          <artifactId>junit</artifactId>
          <version>4.10</version>
      </dependency>

      <!-- javaee-api 6 dependencies -->
      <dependency>
          <groupId>javax</groupId>
          <artifactId>javaee-api</artifactId>
          <version>6.0</version>
          <scope>provided</scope>
      </dependency>

      <!-- struts2 dependencies -->
      <dependency>
          <groupId>org.apache.struts</groupId>
          <artifactId>struts2-core</artifactId>
          <version>2.3.4.1</version>
      </dependency>
      <!-- Struts 2 + Spring plugins -->
      <dependency>
          <groupId>org.apache.struts</groupId>
          <artifactId>struts2-spring-plugin</artifactId>
          <version>2.3.4.1</version>
      </dependency>

      <!-- JDBC dependencies -->
      <dependency>
          <groupId>mysql</groupId>
          <artifactId>mysql-connector-java</artifactId>
          <version>5.1.21</version>
      </dependency>

      <!-- Spring dependencies -->
     <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-core</artifactId>
          <version>${spring.version}</version>
      </dependency>


      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-orm</artifactId>
          <version>${spring.version}</version>
      </dependency>


      <!-- Hibernate dependencies -->
      <dependency>
          <groupId>org.hibernate</groupId>
          <artifactId>hibernate-core</artifactId>
          <version>${hibernate.core.version}</version>
      </dependency>
      <dependency>
          <groupId>org.hibernate</groupId>
          <artifactId>hibernate-entitymanager</artifactId>
          <version>${hibernate.core.version}</version>
      </dependency>
      <dependency>
          <groupId>org.hibernate</groupId>
          <artifactId>hibernate-c3p0</artifactId>
          <version>${hibernate.core.version}</version>
      </dependency>

      <!-- Spring AOP dependency -->
      <dependency>
          <groupId>cglib</groupId>
          <artifactId>cglib</artifactId>
          <version>2.2.2</version>
          <scope>runtime</scope>
      </dependency>

  </dependencies>

accplicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="
       http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
       http://www.springframework.org/schema/tx
       http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">

    <!--its core purpose is to bootstrap a SessionFactory from annotation scanning = LocalSessionFactoryBean.-->
    <!-- The singleton hibernate session factory -->
    <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
        <property name="configLocation" value="classpath:hibernate.cfg.xml" />
    </bean>

    <!-- defining transaction manager bean using Hibernate -->
    <bean id="txManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory"/>
    </bean>

    <!-- enable the configuration of transactional behavior based on annotations -->
    <tx:annotation-driven transaction-manager="txManager"/>

    <!-- Translates Hibernate exceptions to Spring Data Access Exceptions -->
    <bean class="org.springframework.orm.hibernate4.HibernateExceptionTranslator"/>

    <bean id="customerAction" class="com.mkyong.customer.action.CustomerAction">
        <property name="customerBo" ref="customerBo" />
    </bean>

    <bean id="customerBo" class="com.mkyong.customer.bo.impl.CustomerBoImpl" >
        <property name="customerDAO" ref="customerDAO" />
    </bean>

    <!-- The singleton business services class, to be given to the actions -->
    <bean id="customerDAO" class="com.mkyong.customer.dao.impl.CustomerDAOImpl"  >
        <property name="sessionFactory" ref="sessionFactory" />
    </bean>
</beans>

Web.xml

<!-- Spring -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>

    <listener> <!-- Required for the struts2 spring plugin to work -->
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <filter> <!-- Get spring to keep the session open for the whole request, so hibernate's lazy loads work -->
        <filter-name>openSessionInViewFilter</filter-name>
        <filter-class>org.springframework.orm.hibernate4.support.OpenSessionInViewFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>openSessionInViewFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

CustomerDAIImpl.java

package com.mkyong.customer.dao.impl;

import com.mkyong.customer.dao.CustomerDAO;
import com.mkyong.customer.model.Customer;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

@Transactional
public class CustomerDAOImpl implements CustomerDAO{

    protected SessionFactory sessionFactory;
    public void setSessionFactory(SessionFactory sessionFactory) {
        this.sessionFactory = sessionFactory;
    }

    // Shortcut for sessionFactory.getCurrentSession()
    protected Session session() {
        return sessionFactory.getCurrentSession();
    }

    //add the customer
    public void addCustomer(Customer customer){

        session().saveOrUpdate(customer);

    }

    //return all the customers in list
    @Transactional(readOnly = true)
    public List<Customer> listCustomer(){
        return session().createQuery("from Customer").list();
    }

}

[Marten Deinum]

Your stacktrace leads me to think you are either missing a dependency or are mixing spring versions. Try to list your dependencies (I suspect a different spring version coming with the struts2-spring-plugin).

[pirzada]

Thanks alot. Problem is with the Jars and fixed it. 4 small basic questions. Sorry for the trouble.

1 - Where we use packagesToScan. Should I use it in my situation. Without it code is working?
2 - Should I use scope="singleton" on sessionfactory. What it really does?

 <!-- The singleton hibernate session factory -->
    <bean id="sessionFactory" scope="singleton"
          class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
        <property name="configLocation" value="classpath:hibernate.cfg.xml"/>
    </bean>

3 - Should I use connection pooling with hibernate (c3p0)?
4 - I want @autowire with Spring in Struts2 web application. Any link to explore that?

[Marten Deinum]

Where we use packagesToScan. Should I use it in my situation. Without it code is working?

It depends if you use @Entity and want your entities to be picked up instead of listing all of them you have to use packagesToScan.

Should I use scope="singleton" on sessionfactory. What it really does?

No as that is already the default . For what it does I suggest a read of the reference guide which explains bean scopes..

Should I use connection pooling with hibernate (c3p0)?

Not sure what you mean with this, if you want to know if you need a connection pool yes unless you want an application that doesn't perform don't use a connectionpool. If you also want to know if you need/want to use the internal connection pooling for hibernate I would advice against it and simply configure a datasource which supports connection pooling and inject that into your sessionfactorybean. That way you can also use it for the cases you need access to plain JDBC.

I want @autowire with Spring in Struts2 web application. Any link to explore that?

That is what the struts-spring integration is for and for that you really have to check the struts2 website and documentation.

[pirzada]

If you also want to know if you need/want to use the internal connection pooling for hibernate I would advice against it and simply configure a datasource which supports connection pooling and inject that into your sessionfactorybean. That way you can also use it for the cases you need access to plain JDBC.
.

Thanks, very useful information.

Internal connection pooling for hibernate thats what I wanted to ask. I understand.

Configure a datasource which is JNDI right?
I have one confusion. JNDI is configured in the container. Different for different containers. Do you think we have accesses to container in production environment where we configure it for JNDI. I am new and don't know it?

[Marten Deinum]

Configure a datasource which is JNDI right?

Whatever you want.. JNDI or just in the applicaitoncontext.

I have one confusion. JNDI is configured in the container. Different for different containers. Do you think we have accesses to container in production environment where we configure it for JNDI. I am new and don't know it?

JNDI is just JNDI... Which container doesn't matter (from the perspective of doing a lookup, configuration is different but the way to use is the same).