spring以annotation的方式整合hibernate

整合步骤一、加入jar包，这个大家都会。一般加jar的规则

整合步骤二、在spring里面配置连接dbcp连接池，这一块要用到

commons-collections.jar

commons-logging-1.0.4.jar

commons-dbcp.jar

下面来看一下spring配置文件里面是怎么样来进行配置的：

<bean id="myDataSource" class="org.apache.commons.dbcp.BasicDataSource"
		destroy-method="close">
		<property name="driverClassName" value="com.microsoft.sqlserver.jdbc.SQLServerDriver" />
		<property name="url" value="jdbc:sqlserver://localhost:1433;databaseName=wangying" />
		<property name="username" value="sa" />
		<property name="password" value="bbshop" />
		<!-- 连接池启动时的初始值 -->
		<property name="initialSize" value="1" />
		<!-- 连接池的最大值 -->
		<property name="maxActive" value="500" />
		<!-- 最大空闲值.当经过一个高峰时间后，连接池可以慢慢将已经用不到的连接慢慢释放一部分，一直减少到maxIdle为止 -->
		<property name="maxIdle" value="2" />
		<!-- 最小空闲值.当空闲的连接数少于阀值时，连接池就会预申请去一些连接，以免洪峰来时来不及申请 -->
		<property name="minIdle" value="1" />
	</bean>

整合步骤三、配置hibernate的sessionFactory

<bean id="sessionFactory"
		class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
		<property name="dataSource" ref="myDataSource" />
		<property name="packagesToScan">
			<list>
				<value>com.lushuifa.po</value>
			</list>
		</property>
		<property name="hibernateProperties">
			<props>
				<prop key="hibernate.dialect">org.hibernate.dialect.SQLServerDialect</prop>
				<prop key="hibernate.hbm2ddl.auto">update</prop>
				<prop key="hibernate.show_sql">true</prop>
				<prop key="hibernate.format_sql">true</prop>
			</props>
		</property>
	</bean>

 利用packagesToScan来扫描实体bean的位置，这里用到的是AnnotationSessionFactoryBean是注解的方式。  annotatedClasses也可以，但是要精确到某一个特定的类。

整合步骤四、配置hibernate的事务

<!-- 配置事务管理器 -->
	<bean id="hibernateTransaction"
		class="org.springframework.orm.hibernate3.HibernateTransactionManager">
		<property name="sessionFactory" ref="sessionFactory"></property>
	</bean>
 
	<!-- 提供事务的annotation支持 -->
	<tx:annotation-driven transaction-manager="hibernateTransaction" />

 整合步骤五、提供测试po类

package com.lushuifa.po;

import java.io.Serializable;

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

@Entity
@Table(name="t_users_lushuifa")
public class Users implements Serializable
{
    private static final long serialVersionUID = 1L;
	private int id;
	private String userName;
	
	@Id
	@GeneratedValue(strategy=GenerationType.IDENTITY)
    public int getId()
    {
    	return id;
    }
	
    public void setId(int id)
    {
    	this.id = id;
    }
	
    public String getUserName()
    {
    	return userName;
    }
	
    public void setUserName(String userName)
    {
    	this.userName = userName;
    } 
}

 整合步骤六、提供测试dao

dao接口
package com.lushuifa.dao;

import java.util.List;

import com.lushuifa.po.Users;
public interface UserDao
{
	
	/**
	 * 添加用户
	 * @param user
	 */
	public void addUsers(Users user);
	
	public void delUsers(int id);
	
	public List<Users> getUserList();
	
	public Users findUserById(int id);
	
}
dao实现

package com.lushuifa.dao;

import java.util.List;

import javax.annotation.Resource;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.josql.Query;
import org.josql.QueryExecutionException;
import org.josql.QueryParseException;
import org.springframework.transaction.annotation.Transactional;

import com.lushuifa.po.Users;

@Transactional
public class UserDaoImpl implements UserDao
{
	@Resource
	private SessionFactory sessionFactory;
	
	
    public SessionFactory getSessionFactory()
    {
    	return sessionFactory;
    }
	
    
	public void setSessionFactory(SessionFactory sessionFactory)
    {
    	this.sessionFactory = sessionFactory;
    }

	/* (non-Javadoc)
     * @see com.lushuifa.dao.UserDao#addUsers(com.lushuifa.po.Users)
     */
	public void addUsers(Users user)
	{
		try
		{
			 this.sessionFactory.getCurrentSession().persist(user);
		}
		catch (Exception e)
		{
			e.printStackTrace();
		}
	}
	
	/* (non-Javadoc)
     * @see com.lushuifa.dao.UserDao#delUsers(int)
     */
	public void delUsers(int id)
	{
		try
		{
		   this.sessionFactory.getCurrentSession().delete(this.findUserById(id));
		}
		catch (Exception e)
		{
			e.printStackTrace();
		}
	}
	
	/* (non-Javadoc)
     * @see com.lushuifa.dao.UserDao#getUserList()
     */
	public List<Users> getUserList()
	{
	   List<Users>  userList =  this.sessionFactory.getCurrentSession().createQuery("from Users").list();
	   return userList;
	   
	}
	
	/* (non-Javadoc)
     * @see com.lushuifa.dao.UserDao#findUserById(int)
     */
	public Users findUserById(int id)
	{
		Users user = (Users)  this.sessionFactory.getCurrentSession().load(Users.class, 1);
		return user;
	}
	
	/* (non-Javadoc)
     * @see com.lushuifa.dao.UserDao#findUserForJosql(int)
     */
	public List findUserForJosql(int userid){
		Query q = new Query();
		List user = null;
		try
        {
	        q.parse("select * from Users");
	        q.setVariable("userid", userid);
	        user =q.execute(this.getUserList()).getResults();
        }
        catch (QueryParseException e)
        {
	        e.printStackTrace();
        }
        catch (QueryExecutionException e)
        {
            e.printStackTrace();
        }
		return user;
	}
	
	public static void main(String[] args)
    {
	    System.out.println(new UserDaoImpl());
    }
}

 整合步骤六、提供junit类

package com.lushuifa.dao;

import javax.annotation.Resource;

import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.lushuifa.po.Users;

public class UserDaoTest
{
	private UserDao userDao = getUserDao();

	private UserDao getUserDao()
    {
	    ApplicationContext ac = new ClassPathXmlApplicationContext("spring_lushuifa.xml");
	    userDao = (UserDao) ac.getBean("userDao");
	    return userDao;
    }

	@Test
	public void testAddUsers()
	{
		Users user = new Users();
		user.setUserName("标标网");
		userDao.addUsers(user);
		System.out.println("添加成功");
	}
	
	@Test
	public void testDelUsers()
	{
		userDao.delUsers(1);
		System.out.println("删除成功！");
	}
	
	@Test
	public void testJosql()
	{
		userDao.findUserForJosql(2);
	}
}

到此结束