Spring整合Hibernate--声明式事务管理

Spring指定datasource

 

1. 新建jdbc.properties文件:

jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/spring
jdbc.username=root
jdbc.password=linda0213

　　

2. 配置beans.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:aop="http://www.springframework.org/schema/aop"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
           http://www.springframework.org/schema/context
           http://www.springframework.org/schema/context/spring-context-2.5.xsd
           http://www.springframework.org/schema/aop
           http://www.springframework.org/schema/aop/spring-aop-2.5.xsd">
	<context:annotation-config />
	<context:component-scan base-package="com.bjsxt" />

	<!-- 
		<bean id="dataSource"
		class="org.apache.commons.dbcp.BasicDataSource"
		destroy-method="close">		
		<property name="driverClassName" value="com.mysql.jdbc.Driver" />
		<property name="url" value="jdbc:mysql://localhost:3306/spring" />
		<property name="username" value="root" />
		<property name="password" value="bjsxt" />
		</bean>
	-->

	<bean
		class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
		<property name="locations">
			<value>classpath:jdbc.properties</value>
		</property>
	</bean>

	<bean id="dataSource" destroy-method="close"
		class="org.apache.commons.dbcp.BasicDataSource">
		<property name="driverClassName"
			value="${jdbc.driverClassName}" />
		<property name="url" value="${jdbc.url}" />
		<property name="username" value="${jdbc.username}" />
		<property name="password" value="${jdbc.password}" />
	</bean>

	<bean id="sessionFactory"
		class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
		<property name="dataSource" ref="dataSource" />
		<property name="annotatedClasses">
			<list>
				<value>com.bjsxt.model.User</value>
			</list>
		</property>
		<property name="hibernateProperties">
			<props>
				<prop key="hibernate.dialect">
					org.hibernate.dialect.MySQLDialect
				</prop>
				<prop key="hibernate.show_sql">true</prop>
			</props>
		</property>
	</bean>
</beans>

3. UserServiceTest.java:

package com.bjsxt.service;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.bjsxt.model.User;

//Dependency Injection
//Inverse of Control
public class UserServiceTest {
	@Test 
	public void testAdd() throws Exception {
		ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml");		
		UserService service = (UserService)ctx.getBean("userService");
		System.out.println(service.getClass());

		User user=new User();
		user.setName("zhangsan");
		service.add(user);		
		ctx.destroy();		
	}
}

UserService.java:

package com.bjsxt.service;
import javax.annotation.Resource;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Component;

import com.bjsxt.dao.UserDAO;
import com.bjsxt.model.User;


@Component("userService")
public class UserService {
	
	private UserDAO userDAO;  
	
	public void init() {
		System.out.println("init");
	}	
	public void add(User user) {
		userDAO.save(user);
	}
	public UserDAO getUserDAO() {
		return userDAO;
	}	
	@Resource(name="u")
	public void setUserDAO( UserDAO userDAO) {
		this.userDAO = userDAO;
	}	
	public void destroy() {
		System.out.println("destroy");
	}
}

　　

UserDAOImpl.java:

package com.bjsxt.dao.impl;

import java.sql.SQLException;

import javax.annotation.Resource;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.stereotype.Component;

import com.bjsxt.dao.UserDAO;
import com.bjsxt.model.User;

@Component("u") 
public class UserDAOImpl implements UserDAO {

	private SessionFactory sessionFactory;

	public SessionFactory getSessionFactory() {
		return sessionFactory;
	}
	
	@Resource
	public void setSessionFactory(SessionFactory sessionFactory) {
		this.sessionFactory = sessionFactory;
	}

	public void save(User user) {		
		System.out.println("session factory class:" + sessionFactory.getClass());
		Session s = sessionFactory.openSession();
		s.beginTransaction();
		s.save(user);
		s.getTransaction().commit();
		System.out.println("user saved!");
		//throw new RuntimeException("exeption!");
	}
}

　　

UserDAO.java:

package com.bjsxt.dao;
import com.bjsxt.model.User;


public interface UserDAO {
	public void save(User user);
}

User.java:

package com.bjsxt.model;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
@Entity
public class User {
	private int id;
	private String name;	
	@Id
	@GeneratedValue
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}	
}