Here is the simple example for spring and hibernate integration
spring_hibernate.zip
The sessionFactory is injected into the DAO with all definitions in the beans.xml with datasource wired.
beans.xml
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd"> <bean name="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="org.hsqldb.jdbc.JDBCDriver" /> <property name="url" value="jdbc:hsqldb:hsql://localhost/section1" /> <property name="username" value="sa" /> <property name="password" value="" /> </bean> <bean name="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"> <property name="dataSource" ref="dataSource"></property> <property name="packagesToScan" value="org.entity"/> </bean> <bean name="EmployeeDAO" class="org.dao.EmployeeDAO"> <property name="sessionFactory" ref="sessionFactory"/> </bean> </beans>
org.entity.Employee
package org.entity; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; @Entity public class Employee { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Integer employeeId; private String firstName; private String lastName; private String jobTitle; private Double salary;
..............
..............
}
DAO
package org.dao; import org.entity.Employee; import org.hibernate.SessionFactory; public class EmployeeDAO { private SessionFactory sessionFactory; public void setSessionFactory(SessionFactory sessionFactory) { this.sessionFactory = sessionFactory; } public void getEmployee() throws Exception { try { Employee emp = (Employee) sessionFactory.openSession().get(Employee.class, 1); System.out.println("--sessionFactory.get(Employee.class, 1) ---> " + emp); } catch (Exception e) { e.printStackTrace(); throw e; } } }
Test Code
package org; import org.dao.EmployeeDAO; import org.junit.Test; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class EmployeeDAOTest { ApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml"); @Test public void testGetEmployeeWithHibernate() throws Exception{ EmployeeDAO dao = (EmployeeDAO) ctx.getBean("EmployeeDAO"); dao.getEmployee(); } }
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