No Session found for current thread (Spring 3.1.X and Hibernate 4)

It Grunt picture It Grunt · Jan 13, 2012 · Viewed 27.1k times · Source

I'm trying to set up my project using Spring 3.1 and Hibernate 4. I've been following some tutorials online. I'm getting a strange error that according to the spring forums should have been fixed with Spring 3.1. Spring Bug Tracker

When my service calls getCurrentSession(), it throws the following exception:

org.hibernate.HibernateException: **No Session found for current thread**] with root cause org.hibernate.HibernateException: No Session found for current thread
at org.springframework.orm.hibernate4.SpringSessionContext.currentSession(SpringSessionContext.java:97) at
org.hibernate.internal.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:881)

****EDIT: updated my spring-dao.xml according to the Spring Spring 3.1 Documentation for Transactions. I've tried swapping out my datasource with a org.apache.commons.dbcp.BasicDataSource. Are there any properties I am missing from my configuration that could be causing this? ****

Here's my spring-dao.xml:

 <!-- Enable annotation style of managing transactions -->
<tx:annotation-driven transaction-manager="transactionManager" />   

<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
    <property name="dataSource" ref="dataSource" />
    <property name="hibernateProperties">
        <value>hibernate.dialect=org.hibernate.dialect.MySQLInnoDBDialect</value>
    </property>
</bean>

<!-- Declare a datasource that has pooling capabilities-->   
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
            destroy-method="close"
            p:driverClass="${app.jdbc.driverClassName}"
            p:jdbcUrl="${app.jdbc.url}"
            p:user="${app.jdbc.username}"
            p:password="${app.jdbc.password}"
            p:acquireIncrement="5"
            p:idleConnectionTestPeriod="60"
            p:maxPoolSize="100"
            p:maxStatements="50"
            p:minPoolSize="10" />

<!-- Declare a transaction manager-->
<bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager" 
            p:sessionFactory-ref="sessionFactory" />

My User bean (User.java)

package com.foo.lystra.beans;

import java.io.Serializable;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;

@Entity
@Table(name="users")
public class User implements Serializable {
private static final long serialVersionUID = -5527566191402296042L;

@Id
@Column(name = "idusers")
private Integer user_id;

@Column(name="login_name")
private String loginName;

@Column(name="password")
private String password;

@Column(name="role")
private String role;

@Column(name="congregation_id")
private Integer congregation_id;

public Integer getUser_id() {
    return user_id;
}
public void setUser_id(Integer user_id) {
    this.user_id = user_id;
}
public String getLoginName() {
    return loginName;
}
public void setLoginName(String loginName) {
    this.loginName = loginName;
}
public String getPassword() {
    return password;
}
public void setPassword(String password) {
    this.password = password;
}
public String getRole() {
    return role;
}
public void setRole(String role) {
    this.role = role;
}
public Integer getCongregation_id() {
    return congregation_id;
}
public void setCongregation_id(Integer congregation_id) {
    this.congregation_id = congregation_id;
}

public String toString() {
    return "user_name: " + this.loginName + " congregation_id: " + this.congregation_id.toString();
}
}

And finally my service...

package com.foo.lystra.services;

import java.util.List;

import javax.annotation.Resource;

import org.apache.commons.logging.LogFactory;
import org.apache.commons.logging.Log;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.foo.lystra.beans.User;
import com.foo.lystra.beans.Congregation;

@Service("congregationUserService")
@Transactional
public class CongregationUserService {
protected static Log logger = LogFactory.getLog(CongregationUserService.class);

@Resource(name="sessionFactory")
private SessionFactory sessionFactory;

public List<User> getAllUsers() {
    logger.debug("getting all users");

            //Exception is thrown on this next line:
    Session session = sessionFactory.getCurrentSession();

    Query query = session.createQuery("FROM users");
    return query.list();
}
}

I realize that my datasource is probably not getting used. If I have forgotten to include any configurations I can update this post. Also if the Tomcat startup logs are needed I can provide them as well.

Answer

Vali picture Vali · Oct 8, 2012

I have the same problem in a web application. The problem is with which exist in both configuration files: application-context.xml and webmvc-context.xml. The webmvc-context.xml is loaded after application-context.xml. I think the DAO class is loaded first with transactional references when the application-context.xml is loaded, but it is replace with another object, without transactional references, when webmvc-context.xml is loaded. Any way, I resolve the problem with specific packages scanned:
<context:component-scan base-package="com.app.repository" />
for application-context.xml, and
<context:component-scan base-package="com.app.web" />
for webmvc-context.xml.