<?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:aop="http://www.springframework.org/schema/aop"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:jee="http://www.springframework.org/schema/jee"
    xmlns:lang="http://www.springframework.org/schema/lang"
    xmlns:p="http://www.springframework.org/schema/p"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:util="http://www.springframework.org/schema/util"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
        http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.0.xsd
        http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
        http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd">           
   
   <bean id="propertyConfigurer"
     class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"
     p:location="/WEB-INF/jdbc.properties" />
   
   <bean id="dataSource"
     class="org.apache.commons.dbcp2.BasicDataSource" destroy-method="close"
     p:driverClassName="${jdbc.driverClassName}"
     p:url="${jdbc.databaseurl}" p:username="${jdbc.username}"
     p:password="${jdbc.password}" />
     
  <bean id="sessionFactory"
     class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
     <property name="dataSource" ref="dataSource" />
     <property name="configLocation">
        <value>classpath:hibernate.cfg.xml</value>
    </property>
      <property name="hibernateProperties">
         <props>
          <prop key="hibernate.dialect">${jdbc.dialect}</prop>
            <prop key="hibernate.show_sql">true</prop>
         </props>
      </property>
      
      <property name="packagesToScan">
         <list>
            <value>demo.entity</value>
         </list>
      </property>
   </bean>
   
   <bean id="transactionManager"
      class="org.springframework.orm.hibernate4.HibernateTransactionManager">
      <property name="sessionFactory" ref="sessionFactory" />
   </bean>

   <tx:advice id="txAdvice" transaction-manager="transactionManager">
      <tx:attributes>
         <tx:method name="insert*" propagation="REQUIRED" />
         <tx:method name="update*" propagation="REQUIRED" />
         <tx:method name="edit*" propagation="REQUIRED" />
         <tx:method name="save*" propagation="REQUIRED" />
         <tx:method name="add*" propagation="REQUIRED" />
         <tx:method name="new*" propagation="REQUIRED" />
         <tx:method name="set*" propagation="REQUIRED" />
         <tx:method name="remove*" propagation="REQUIRED" />
         <tx:method name="delete*" propagation="REQUIRED" />
         <tx:method name="change*" propagation="REQUIRED" />
         <tx:method name="get*" propagation="REQUIRED" read-only="true" />
         <tx:method name="find*" propagation="REQUIRED" read-only="true" />
         <tx:method name="load*" propagation="REQUIRED" read-only="true" />
         <tx:method name="*" propagation="REQUIRED" read-only="true" />
      </tx:attributes>
    </tx:advice>
   <context:component-scan base-package="demo.action" />
</beans>

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
         "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
   <session-factory>
 
      <property name="dialect">org.hibernate.dialect.MySQLDialect</property>
    <property name="jdbc.batch_size">20</property>
    <property name="connection.autocommit">true</property>

    <property name="show_sql">true</property>
    <property name="connection.useUnicode">true</property>
    <property name="connection.characterEncoding">UTF-8</property>

   </session-factory>
</hibernate-configuration>

package Demo.dao;

import java.io.Serializable;
import java.util.List;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;

@Repository
public class DemoDao<T>{
   //Session factory injected by spring context
   private SessionFactory sessionFactory;
   
   public SessionFactory getSessionFactory() { 
      return sessionFactory; 
   }
   
    @Autowired 
   public void setSessionFactory(SessionFactory sessionFactory) { 
      this.sessionFactory = sessionFactory; 
   }
   
   private Session getCurrentSession() { 
      return sessionFactory.getCurrentSession(); //---37 line
   }
   
    public List<T> find(String hql, Object[] param) { 
     Query q = this.getCurrentSession().createQuery(hql);   //----61 line
     if (param != null && param.length > 0) { 
       for (int i = 0; i < param.length; i++) { 
         q.setParameter(i, param[i]); 
       } 
     } 
     return q.list(); 
  } 
}

Struts has detected an unhandled exception:
Messages: •Could not obtain transaction-synchronized Session for current thread
File: org/springframework/orm/hibernate4/SpringSessionContext.java
Line number: 134

Stacktraces
org.hibernate.HibernateException: Could not obtain transaction-synchronized Session for current thread
    org.springframework.orm.hibernate4.SpringSessionContext.currentSession(SpringSessionContext.java:134)
    org.hibernate.internal.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:1014)
    Demo.dao.DemoDao.getCurrentSession(DemoDao.java:37)
    Demo.dao.DemoDao.find(DemoDao.java:61)