Spring Hibernate - Could not obtain transaction-synchronized Session for current thread - spring

Question

I created an application with spring + hibernate, but I always get this error. This is my first application with hibernate, I read some guides but I can not solve this problem. Where am I doing wrong?
This is the code of my application
ott 05, 2014 4:03:06 PM org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh
Informazioni: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext#1eab16b: startup date [Sun Oct 05 16:03:06 CEST 2014]; root of context hierarchy
ott 05, 2014 4:03:06 PM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
Informazioni: Loading XML bean definitions from class path resource [springConfig.xml]
ott 05, 2014 4:03:08 PM org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {4.0.5.Final}
ott 05, 2014 4:03:08 PM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {4.3.6.Final}
ott 05, 2014 4:03:08 PM org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
ott 05, 2014 4:03:08 PM org.hibernate.cfg.Environment buildBytecodeProvider
INFO: HHH000021: Bytecode provider name : javassist
ott 05, 2014 4:03:09 PM org.hibernate.dialect.Dialect <init>
INFO: HHH000400: Using dialect: org.hibernate.dialect.MySQL5Dialect
ott 05, 2014 4:03:09 PM org.hibernate.engine.transaction.internal.TransactionFactoryInitiator initiateService
INFO: HHH000399: Using default transaction strategy (direct JDBC transactions)
ott 05, 2014 4:03:09 PM org.hibernate.hql.internal.ast.ASTQueryTranslatorFactory <init>
INFO: HHH000397: Using ASTQueryTranslatorFactory
Exception in thread "main" org.hibernate.HibernateException: Could not obtain transaction-synchronized Session for current thread
at org.springframework.orm.hibernate4.SpringSessionContext.currentSession(SpringSessionContext.java:134)
at org.hibernate.internal.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:1014)
at coreservlets.StudentDAOImpl.create(StudentDAOImpl.java:19)
at coreservlets.MainApp.main(MainApp.java:14)
student.java
package coreservlets;
public class Student {
private Integer id;
private String name;
private Integer age;
public Integer getId(){return id;}//getId
public void setId(Integer id){this.id=id;}//setId
public String getName(){return name;}//getName
public void setName(String name){this.name=name;}//setName
public Integer getAge(){return age;}//getAge
public void setAge(Integer age){this.age=age;}//setAge
}//Student
studentDAO.java
package coreservlets;
import org.hibernate.SessionFactory;
public interface StudentDAO {
public void setSessionFactory(SessionFactory sessionFactory);
public void create(String name,Integer age);
}//StudentDAO
StudentDAOImpl.java
package coreservlets;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
#Repository
public class StudentDAOImpl implements StudentDAO {
private SessionFactory sessionFactory;
#Autowired
public void setSessionFactory(SessionFactory sessionFactory){
this.sessionFactory=sessionFactory;
}//setSessionFactory
public void create(String name,Integer age){
Session session=sessionFactory.getCurrentSession();
Student student=new Student();
student.setName(name);
student.setAge(age);
session.save(student);
}//create
}//StudentDAOImpl
MainApp.java
package coreservlets;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class MainApp {
public static void main(String[] args) {
ApplicationContext context=new ClassPathXmlApplicationContext("springConfig.xml");
StudentDAOImpl student=(StudentDAOImpl) context.getBean("studentDAOImpl");
student.create("Alessandro", new Integer(33));
}//main
}//MainApp
springConfig.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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.1.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd">
<context:annotation-config/>
<context:component-scan base-package="coreservlets"/>
<bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/spring_hibernate"/>
<property name="username" value="root"/>
<property name="password" value="password"/>
<property name="initialSize" value="5"/>
<property name="maxTotal" value="10"/>
</bean>
<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="hibernateProperties">
<value>
hibernate.dialect=org.hibernate.dialect.MySQLDialect
</value>
</property>
</bean>
</beans>
sql
create table student
(
id integer not null auto_increment,
name varchar(20) not null,
age integer not null,
primary key(id)
);

Answer 1

You must enable the transaction support (<tx:annotation-driven> or #EnableTransactionManagement) and declare the transactionManager and it should work through the SessionFactory.
You must add #Transactional into your #Repository
With #Transactional in your #Repository Spring is able to apply transactional support into your repository.
Your Student class has no the #javax.persistence.* annotations how #Entity, I am assuming the Mapping Configuration for that class has been defined through XML.

Answer 2

I have had the same issue, but in a class that was not a part of the service layer. In my case, the transaction manager was simply obtained from the context by the getBean() method, and the class belonged to the view layer - my project utilizes OpenSessionInView technique.
The sessionFactory.getCurrentSession() method, has been causing the same exception as the author's. The solution for me was rather simple.
Session session;
try {
session = sessionFactory.getCurrentSession();
} catch (HibernateException e) {
session = sessionFactory.openSession();
}
If the getCurrentSession() method fails, the openSession() should do the trick.

Answer 3

Add the annotation #Transactional of spring in the class service

Answer 4

I had this error too because in the file where I used #Transactional annotation, I was importing the wrong class
import javax.transaction.Transactional;
Instead of javax, use
import org.springframework.transaction.annotation.Transactional;

Answer 5

In your xyz.DAOImpl.java
Do the following steps:
//Step-1: Set session factory
#Resource(name="sessionFactory")
private SessionFactory sessionFactory;
public void setSessionFactory(SessionFactory sf)
{
this.sessionFactory = sf;
}
//Step-2: Try to get the current session, and catch the HibernateException exception.
//Step-3: If there are any HibernateException exception, then true to get openSession.
try
{
//Step-2: Implementation
session = sessionFactory.getCurrentSession();
}
catch (HibernateException e)
{
//Step-3: Implementation
session = sessionFactory.openSession();
}

Answer 6

You need to allow transaction to your DAO method.
Add,
#Transactional(readOnly = true, propagation=Propagation.NOT_SUPPORTED)
over your dao methods.
And #Transactional should be from the package:
org.springframework.transaction.annotation.Transactional

Answer 7

I added these configuration in web.xml and it works well for me!
<filter>
<filter-name>OpenSessionInViewFilter</filter-name>
<filter-class>org.springframework.orm.hibernate5.support.OpenSessionInViewFilter</filter-class>
<init-param>
<param-name>sessionFactoryBeanName</param-name>
<param-value>sessionFactory</param-value>
</init-param>
<init-param>
<param-name>flushMode</param-name>
<param-value>AUTO</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>OpenSessionInViewFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
Additionally, the most ranked answer give me clues to prevent application from panic at the first run.

Answer 8

My configuration was like this. I had a QuartzJob , a Service Bean , and Dao . as usual it was configured with LocalSessionFactoryBean (for hibernate) , and SchedulerFactoryBean for Quartz framework. while writing the Quartz job , I by mistake annotated it with #Service , I should not have done that because I was using another strategy to wire the QuartzBean using AutowiringSpringBeanJobFactory extending SpringBeanJobFactory.
So what actually was happening is that due to Quartz Autowire , TX was getting injected to the Job Bean and at the same time Tx Context was set by virtue of #Service annotation and hence the TX was falling out of sync !!
I hope it help to those for whom above solutions really didn't solved the issue. I was using Spring 4.2.5 and Hibernate 4.0.1 ,
I see that in this thread there is a unnecessary suggestion to add #Transactional annotation to the DAO(#Repository) , that is a useless suggestion cause #Repository has all what it needs to have don't have to specially set that #transactional on DAOs , as the DAOs are called from the services which have already being injected by #Trasancational . I hope this might be helpful people who are using Quartz , Spring and Hibernate together.

Answer 9

My solution was (using Spring) putting the method that fails inside another method that creates and commits the transaction.
To do that I first injected the following:
#Autowired
private PlatformTransactionManager transactionManager;
And finally did this:
public void newMethod() {
DefaultTransactionDefinition definition = new DefaultTransactionDefinition();
TransactionStatus transaction = transactionManager.getTransaction(definition);
oldMethod();
transactionManager.commit(transaction);
}

Answer 10

#Transactional =javax.transaction.Transactional. Put it just beside #Repository.

Answer 11

Add transaction-manager to your <annotation-driven/> in spring-servlet.xml:
<tx:annotation-driven transaction-manager="yourTransactionBeanID"/>

Answer 12

Check your dao class. It must be like this:
Session session = getCurrentSession();
Query query = session.createQuery(GET_ALL);
And annotations:
#Transactional
#Repository

Answer 13

I encountered the same problem and finally found out that the <tx:annotaion-driven /> was not defined within the [dispatcher]-servlet.xml where component-scan element enabled #service annotated class.
Simply put <tx:annotaion-driven /> with component-scan element together, the problem disappeared.

Answer 14

My similar issue got fixed with below 2 approaches.
1) Through manually handling transactions:
Session session = sessionFactory.getCurrentSession();
Transaction tx = session.beginTransaction();
UserInfo user = (UserInfo) session.get(UserInfo.class, 1);
tx.commit();
2) Tell Spring to open and manage transactions for you in your web.xml filters and Ensure to use #Repository #Transactional:
<filter>
<filter-name>hibernateFilter</filter-name>
<filter-class>org.springframework.orm.hibernate5.support.OpenSessionInViewFilter</filter-class>
<init-param>
<param-name>sessionFactory</param-name>
<param-value>session.factory</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>hibernateFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

Answer 15

In this class above #Repository just placed one more annotation #Transactional it will work. If it works reply back(Y/N):
#Repository
#Transactional
public class StudentDAOImpl implements StudentDAO

Answer 16

Thanks for comment of mannedear. I use springmvc and in my case I have to use as
#Repository
#Transactional
#EnableTransactionManagement
public class UserDao {
...
}
and I also add spring-context to pom.xml and it works

Answer 17

I had the same issue. I resolved it doing the following:
Add the this line to the dispatcher-servlet file:
<tx:annotation-driven/>
Check above <beans> section in the same file. These two lines must be present:
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation= "http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"
Also make sure you added #Repository and #Transactional where you are using sessionFactory.
#Repository
#Transactional
public class ItemDaoImpl implements ItemDao {
#Autowired
private SessionFactory sessionFactory;

Answer 18

My Database table has mismatch column name with the Java Object (#Entity) which leads to throw the above exception.
By updating the table with appropriate column name resolves this issue.

Answer 19

In my case the problem was a Controller trying to access directly to a DAO with #Repository.
Adding an #Service layer on top of the #Repository fixed the problem