sh_Spring整合Hibernate

分别介绍了Sping和Hibernate,以下是将它们整合到一块去了。

  一、Hibernate内容

1.创建PO类。

package cn.tgb.domain;

//User实体
public class User {
	private Integer id;
	private String username;
	private String password;	

	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	public String getUsername() {
		return username;
	}
	public void setUsername(String username) {
		this.username = username;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
}

2.编写User.hbm.xml

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

<hibernate-mapping>
	<class name="cn.tgb.domain.User" table="t_user">
		<id name="id">
			<generator class="native"></generator>
		</id>
		<property name="username"></property>
		<property name="password"></property>
	</class>
</hibernate-mapping>

3.编写Hibernate.cfg.xml

<?

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>
		<!-- #1核心四项 -->
		<property name="hibernate.connection.driver_class">com.microsoft.sqlserver.jdbc.SQLServerDriver</property>
		<property name="hibernate.connection.url">jdbc:sqlserver://localhost:1433; DatabaseName=hibernate02</property>
		<property name="hibernate.connection.username">sa</property>
		<property name="hibernate.connection.password">123456</property>

		<!-- #2设置方言 -->
		<property name="hibernate.dialect">org.hibernate.dialect.SQLServerDialect</property>

		<!-- #3 sql -->
		<!-- * 输出sql-->
		<property name="hibernate.show_sql">true</property>
		<!-- * 格式化sql -->
		<property name="hibernate.format_sql">true</property>
		<!-- * 是否创建表 -->
		<property name="hibernate.hbm2ddl.auto">update</property>

		<!-- #4整合c3p0 -->
		<property name="hibernate.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property>

		<!-- #5 web项目6.0 取消bean校验 -->
		<property name="javax.persistence.validation.mode">none</property>			

		<!-- #6加入映射文件 -->
		<mapping resource="cn/tgb/domain/User.hbm.xml"/>
	</session-factory>
</hibernate-configuration> 

    二、Spring内容

1.Dao实现类：使用HibernateTemplate对PO类进行操作。

package cn.tgb.dao.impl;

import java.util.List;

import org.springframework.orm.hibernate3.HibernateTemplate;

import cn.tgb.dao.UserDao;
import cn.tgb.domain.User;

public class UserDaoImpl implements UserDao{

	//使用hibernateTemplate对PO类进行操作
	private HibernateTemplate hibernateTemplate;
	//提供set方法
	public void setHibernateTemplate(HibernateTemplate hibernateTemplate) {
		this.hibernateTemplate = hibernateTemplate;
	}

	@Override
	public void save(User user) {
		this.hibernateTemplate.save(user);
	}

	@Override
	public void update(User user) {
		this.hibernateTemplate.update(user);
	}

	@Override
	public void delete(User user) {
		this.hibernateTemplate.delete(user);
	}

	@Override
	public User findById(Integer uid) {
		return this.hibernateTemplate.get(User.class, uid);
	}

	@Override
	public List<User> findAllUser() {
		return this.hibernateTemplate.find("from User");
	}

}

2.Service实现类：直接使用dao层，通过spring tx管理事务

package cn.tgb.service.impl;

import java.util.List;

import cn.tgb.dao.UserDao;
import cn.tgb.domain.User;
import cn.tgb.service.UserService;

public class UserServiceImpl implements UserService{
	//引入UserDao
	private UserDao userDao;
	//提供set方法
	public void setUserDao(UserDao userDao) {
		this.userDao = userDao;
	}

	@Override
	public void addUser(User user) {
		this.userDao.save(user);
	}

	@Override
	public void updateUser(User user) {
		this.userDao.update(user);
	}

	@Override
	public void deleteUser(User user) {
		this.userDao.delete(user);
	}

	@Override
	public User findUserById(Integer uid) {
		return this.userDao.findById(uid);
	}

	@Override
	public List<User> findAllUser() {
		return this.userDao.findAllUser();
	}

}

3.配置applicationContext.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"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd
       http://www.springframework.org/schema/aop
       http://www.springframework.org/schema/aop/spring-aop.xsd
       http://www.springframework.org/schema/tx
       http://www.springframework.org/schema/tx/spring-tx.xsd">

     <!-- #1配置sessionFactory,
     	通过LocalSessionFactoryBean载入配置获得SessionFactory
     -->  

     <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
     	<!-- #1.1确定配置文件的位置 -->
     	<property name="configLocation" value="classpath:hibernate.cfg.xml"></property>
     </bean>
     <!-- #2 hibernateTemplate -->
     <bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate">
     	<!-- 须要使用sessionFactory获得session,操作PO对象 -->
     	<property name="sessionFactory" ref="sessionFactory"></property>
     </bean>
     <!-- #3 dao -->
     <bean id="userDao" class="cn.tgb.dao.impl.UserDaoImpl">
     	<property name="hibernateTemplate" ref="hibernateTemplate"></property>
     </bean>
     <!-- #4 service -->
     <bean id="userService" class="cn.tgb.service.impl.UserServiceImpl">
     	<property name="userDao" ref="userDao"></property>
     </bean>

     <!-- #5 事务管理 -->
     <!-- #5.1事务管理器 -->
     <bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
     	<!-- 必须确定sessionFactory。

从而获得session，再获得事务 -->
     	<property name="sessionFactory" ref="sessionFactory"></property>
	 </bean>

	 <!-- #5.2事务通知(增强)，对指定目标方法进行增强 -->
	 <tx:advice id="txAdvice" transaction-manager="txManager">
	 	<tx:attributes>
	 		<tx:method name="add*"/>
	 		<tx:method name="update*"/>
	 		<tx:method name="delete*"/>
	 		<tx:method name="find*" read-only="true"/>
	 	</tx:attributes>
	 </tx:advice>	

	 <!-- #5.3使用aop生成代理，进行增强 -->
	 <aop:config>
	 	<!-- 确定切入点 -->
	 	<aop:pointcut expression="execution(* cn.tgb.service..*.*(..))" id="txPointCut"/>
	 	<!-- 声明切面 -->
	 	<aop:advisor advice-ref="txAdvice" pointcut-ref="txPointCut"/>
	 </aop:config>
</beans>

至此，Spring和Hibernate就算整合好了。以下编写一个測试类測试下。

package cn.tgb.test;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import cn.tgb.domain.User;
import cn.tgb.service.UserService;

public class TestApp {
	public static void main(String[] args) {

		//1.创建建用户
		User user = new User();
		user.setUsername("jiangxiao");
		user.setPassword("123");

		//2.获取Sping配置文件
		String xmlPathString="applicationContext.xml";
		ApplicationContext applicationContext= new ClassPathXmlApplicationContext(xmlPathString);

		//3.通过Ioc获得UserService
		UserService userService = (UserService) applicationContext.getBean("userService");

		//4.运行加入用户操作
		userService.addUser(user);
	}
}

分析总结：

这张思维导图大概介绍了一下配置文件的配置内容和载入过程，当中蓝色的云朵部分是Spring整合Hibernate的内容。

程序执行时。通过载入配置文件，便将程序中全部的配置信息都载入了。假设有个扩展改动什么的也方便。

日后会继续介绍它们两个与Struts的整合。