Hibernate-Spring Web container error - spring

Question

Hello I'm new to Hibernate.
I have generated with Hibernate Tools a database access module. The generator generates the code of the DAOS and Hibernate Beans.
When I test this module in a simple Java application all works fine, but when I test it in a Spring Web application I get a very strange error. Since my module is an independent jar it should access the database without regarding the circumstance of being executed in a simple Java application or a Web application. The code of my web application is:
#Controller
#RequestMapping("/")
public class Controller implements ApplicationContextAware
{
private ApplicationContext applicationContext;
#RequestMapping(value = "/purchased/songs", method = RequestMethod.GET)
public String home(Model model)
{
SessionManager.startOperation();
ChargeTryDAOBase ctdb=new ChargeTryDAOBase();
List <ChargeTry> data=ctdb.findByRemoteId("dsfsdfsdf8");
SessionManager.endOperation();
model.addAttribute("result", "data" );
return "home";
}
#Override
public void setApplicationContext(ApplicationContext arg0) throws BeansException
{
this.applicationContext = arg0;
}
}
When running this code on Tomcat I get following error:
org.springframework.web.util.NestedServletException: Handler processing
nested exception is java.lang.NoSuchMethodError:
org.hibernate.SessionFactory.getCurrentSession()Lorg/hibernate/Session;
.....
java.lang.NoSuchMethodError:
org.hibernate.SessionFactory.getCurrentSession()Lorg/hibernate/Session;
When I change some Hibernate dependencies I get following error:
java.lang.IllegalStateException: Could not locate SessionFactory in JNDI
When I test the above code in a simple Java application all works fine.
Is this a spring-hibernate configuration problem?
Thank you for your help.

Answer 1

Please study
1: http://www.javatpoint.com/hibernate-and-spring-integration
and
2 http://viralpatel.net/blogs/spring3-mvc-hibernate-maven-tutorial-eclipse-example/
to get insight of Spring MVC and Hibernate Integration.
You can work with Hibernate Configuration file - here is the link -
Spring and hibernate.cfg.xml
But as your application is within a spring managed container, We will highly recommend to use applicationcontext.xml for better maintenance and management of codebase and performance.

Answer 2

thank you for your help finally I got all working. I followed your link and googled a little bit. The problem was that I didn't enable in my hibernate.cfg.xml file the datasource parameter, I also have configured C3P0 jdbc connection provider.
My final hibernate.cfg.xml file is:
<hibernate-configuration>
<session-factory>
<property name="hibernate.bytecode.use_reflection_optimizer">true</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</property>
<property name="current_session_context_class">thread</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/mydb</property>
<property name="hibernate.connection.username">userdb</property>
<property name="hibernate.connection.password">12345</property>
<property name="hibernate.connection.datasource">java:comp/env/jdbc/mydb</property>
<property name="hibernate.format_sql">true</property>
<property name="hibernate.use_sql_comments">true</property>
<property name="hibernate.connection.provider_class">org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider</property>
<property name="hibernate.c3p0.min_size">2</property>
<property name="hibernate.c3p0.numHelperThreads">4</property>
<property name="hibernate.c3p0.max_size">10</property>
<property name="hibernate.c3p0.timeout">300</property>
<property name="hibernate.c3p0.max_statements">100</property>
<property name="hibernate.c3p0.idle_test_period">1800</property>
<property name="hibernate.c3p0.acquire_increment">2</property>
<hibernate-configuration>
<session-factory>
In my web.xml I have added following lines:
<resource-ref>
<description>This is a MySQL database connection</description>
<res-ref-name>jdbc/mydb</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
In the Spring context file I have added following lines:
<beans:bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<beans:property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<beans:property name="url" value="jdbc:mysql://localhost:3306/mydb"/>
<beans:property name="username" value="userdb"/>
<beans:property name="password" value="12345"/>
</beans:bean>
<beans:bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<beans:property name="dataSource" ref="dataSource" />
<beans:property name="configLocation">
<beans:value>classpath:hibernate.cfg.xml</beans:value>
</beans:property>
</beans:bean>
The strange thing is, that with the default Hibernate connection provider, the above solution didn't work but when I configured C3P0 all started to work.
Thank you for your help.