Spring Boot - java.lang.ClassNotFoundException: org.hibernate.engine.transaction.spi.TransactionContext

Question

I am new on Spring Boot. I am trying make a web app using Hibernate but I am experiencing these errors. I looked similar questions but I couldn't find a solution. How can I solve it?

2016-12-19 18:56:39.328 INFO 143744 --- [ main] org.hibernate.Version : HHH000412: Hibernate Core {5.0.11.Final}

java.lang.ClassNotFoundException: org.hibernate.engine.transaction.spi.TransactionContext at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[na:1.8.0_91] at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_91] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) ~[na:1.8.0_91] at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_91] at org.springframework.orm.hibernate4.HibernateTransactionManager.isSameConnectionForEntireSession(HibernateTransactionManager.java:711) ~[spring-orm-4.3.4.RELEASE.jar:4.3.4.RELEASE] at org.springframework.orm.hibernate4.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:445) ~[spring-orm-4.3.4.RELEASE.jar:4.3.4.RELEASE] at org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:373) ~[spring-tx-4.3.4.RELEASE.jar:4.3.4.RELEASE] at org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:447) ~[spring-tx-4.3.4.RELEASE.jar:4.3.4.RELEASE] at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:277) ~[spring-tx-4.3.4.RELEASE.jar:4.3.4.RELEASE] at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) ~[spring-tx-4.3.4.RELEASE.jar:4.3.4.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.4.RELEASE.jar:4.3.4.RELEASE] at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213) ~[spring-aop-4.3.4.RELEASE.jar:4.3.4.RELEASE] at com.sun.proxy.$Proxy77.listPosts(Unknown Source) ~[na:na] at com.monat.service.PostServiceImpl.listPosts(PostServiceImpl.java:24) ~[classes/:na] at com.monat.controller.PostController.list(PostController.java:20) ~[classes/:na]

My pom.xml dependencies

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>

        <dependency>
            <groupId>commons-dbcp</groupId>
            <artifactId>commons-dbcp</artifactId>
            <version>1.4</version>
        </dependency>

    </dependencies>

My Controller class

@Controller
@RequestMapping("/posts")
public class PostController 
{

    @Autowired
    PostService postService;

    @RequestMapping(value="", method=RequestMethod.GET)
    public String list(Model model){
        model.addAttribute("listData",postService.listPosts());

        return "list";
    }

}

My Service Class

@Service
public class PostServiceImpl implements PostService{

    @Autowired
    PostDao postDao;

    @Override
    public List<Post> listPosts() {
        return postDao.listPosts();
    }

}

My Repository Class

@Repository
public class PostDaoImpl implements PostDao{

    @Autowired
    private SessionFactory sessionFactory;

    public PostDaoImpl(){}

    public PostDaoImpl(SessionFactory sessionFactory){
        this.sessionFactory=sessionFactory;
    }

    @Override
    @Transactional
    public List<Post> listPosts() {

        @SuppressWarnings("unchecked")
        List<Post> listPost2 = (List<Post>) sessionFactory.getCurrentSession().createQuery("from Post");

        return listPost2;
    }

}

Answer 1

Usually with spring boot and hibernate you build the sessionFactory. So, you do not need the transactionManager bean.

Therefore remove this part from your DBConfiguration:

@Bean
public HibernateTransactionManager transactionManager() {
    HibernateTransactionManager transactionManager = new HibernateTransactionManager();
    transactionManager.setSessionFactory(sessionFactory().getObject());
    return transactionManager;
}

Answer 2

I have solved it. I have removed this part my config class and it's solved.

  @Bean
  public HibernateTransactionManager transactionManager() {
    HibernateTransactionManager transactionManager = 
        new HibernateTransactionManager();
    transactionManager.setSessionFactory(sessionFactory().getObject());
    return transactionManager; 

Answer 3

Try adding these dependencies to the dependencies section of your pom and rebuilding your project:

    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
    </dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-entitymanager</artifactId>
    </dependency>