Why is Spring's Transaction Management not working with this configuration?

Question

There are terribly many questions about this on SO, but I've tried some of them that sound correct, but I'm still getting

org.hibernate.HibernateException: No Session found for current thread

My Service layer classes are annotated as such:

   @Service
   public class MyService {
       @Autowired
       public SomeDao someDao;

       @Transactional
       public void performSomeTransaction() {/* ... */}
   }

My application context XML has the following relevant declarations:

    <context:component-scan base-package = "com.myapp.business.dao.impl" />
    <context:component-scan base-package = "com.myapp.business.services" />

    <context:annotation-config />

    <tx:annotation-driven transaction-manager = "transactionManager" />

    <!-- Hibernate -->
    <bean id="sessionFactory"
        class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
        <property name="hibernateProperties">
            <props>
                <prop key="connection.url">jdbc:mysql://localhost:3306/bidapp</prop>
                <prop key="connection.username">bidapp</prop>
                <prop key="connection.password">pennyfss</prop>
                <prop key="connection.driver_class">com.mysql.jdbc.Driver</prop>

                <prop key="hibernate.connection.pool_size">10</prop>
                <prop key="hibernate.connection.autocommit">false</prop>
                <prop key="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</prop>
                <prop key="hibernate.show_sql">true</prop>
                <prop key="hibernate.hbm2ddl.auto">update</prop>

                <prop key="c3p0.acquireIncrement">1</prop>
                <prop key="c3p0.max_size">50</prop>
                <prop key="c3p0.max_statement">0</prop>
                <prop key="c3p0.min_size">10</prop>
                <prop key="c3p0.timeout">0</prop>
            </props>
        </property>
        <property name="dataSource" ref="dataSource"></property>
        <property name="packagesToScan">
            <list>
                <value>com.bidapp.business.domain</value>
            </list>
        </property>
    </bean>

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

    <bean id="transactionManager"
        class="org.springframework.orm.hibernate4.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory" />
    </bean>

I also have my dispatcher-servlet.xml file with

    <mvc:annotation-driven />
<mvc:default-servlet-handler />

<context:component-scan base-package="com.myapp.presentation.controllers" />
<context:annotation-config />

<bean id="viewResolver" class="org.thymeleaf.spring3.view.ThymeleafViewResolver">
    <property name="templateEngine" ref="templateEngine" />
</bean>

Why doesn't spring wrap my services with transactions?

So it appears that the issue has to do with not getting instances correctly. I have the following Shiro Security config:

    <bean id = "hibernateRealm" class = "com.bidapp.presentation.shiro.HibernateRealm" >
        <property name = "credentialsMatcher" ref = "credentialsMatcher" />
    </bean> 

    <bean id = "credentialsMatcher" class = "com.bidapp.presentation.shiro.JasyptCredentialsMatcher" />

    <bean id = "securityManager" class = "org.apache.shiro.web.mgt.DefaultWebSecurityManager">
        <property name = "realm" ref = "hibernateRealm" />
    </bean>

HibernateRealm is the service class with the @Transactional annotation. Shouldn't Spring be wrapping it in a proxy since it is creating it here.

Answer 1

The most common causes of this problem are

1. Incorrectly obtaining a service instance: for instance, instantiating it yourself rather than getting an instance from Spring.
2. Incorrectly configuring the root and child application contexts in a Spring MVC application. I've answered quite a number of these questions here. Here are some of the more educational ones:

Spring XML file configuration hierarchy help/explanation

Declaring Spring Bean in Parent Context vs Child Context

Showing the code where you obtain and use the service instance will help define the problem.