Spring与Hibernate整合

Spring与Hibernate整合关键点：

         1） Hibernate的SessionFactory对象交给Spring创建；

         2） hibernate事务交给spring的声明式事务管理。

SSH整合：

         Spring与Struts；

         Spring与hibernate整合；

SH整合步骤：

         1）引入jar包

                   连接池/数据库驱动包

                   Hibernate相关jar

                   Spring 核心包(5个)

                   Spring aop 包(4个)

                   spring-orm-3.2.5.RELEASE.jar                 【spring对hibernate的支持】

spring-tx-3.2.5.RELEASE.jar                     【事务相关】

         2）配置

                   hibernate.cfg.xml

                   bean.xml

         3）搭建环境、单独测试

---

package loaderman.dao;

import loaderman.entity.Dept;
import org.hibernate.SessionFactory;


// 数据访问层
public class DeptDao {

    // Spring与Hibernate整合： IOC容器注入
    private SessionFactory sessionFactory;
    public void setSessionFactory(SessionFactory sessionFactory) {
        this.sessionFactory = sessionFactory;
    }

    // 保存一个记录
    // Spring与Hibernate整合：事务管理交给Spring
    public void save(Dept dept) {
        sessionFactory.getCurrentSession().save(dept);
    }
}

package loaderman.dao;

import loaderman.entity.Dept;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import org.hibernate.classic.Session;



// 数据访问层
public class DeptDao_bak {

    private static SessionFactory sessionFactory;
    static {
        sessionFactory = new Configuration().configure().buildSessionFactory();
    }

    // 保存一个记录
    public void save(Dept dept) {
        // 创建配置管理类对象、创建SessionFactory、创建Session,  执行操作， 关闭
        Session session = sessionFactory.openSession();
        session.beginTransaction();
        // 保存
        session.save(dept);
        session.getTransaction().commit();
        session.close();
    }
}

package loaderman.entity;

public class Dept {

    private int id;
    private String name;
    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;
    }
}

<?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 package="loaderman.entity">

    <class name="Dept" table="t_dept">
        <id name="id" column="deptId">
            <generator class="native"></generator>
        </id>
        <property name="name" column="deptName"></property>
    </class>

</hibernate-mapping>

package loaderman.service;


import loaderman.dao.DeptDao;
import loaderman.entity.Dept;
// 业务逻辑层
public class DeptService {
    

    private DeptDao deptDao;
    public void setDeptDao(DeptDao deptDao) {
        this.deptDao = deptDao;
    }
    
    public void save(Dept dept){
        deptDao.save(dept);
    }
}

package loaderman;

import loaderman.entity.Dept;
import loaderman.service.DeptService;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;



public class App {
    // 容器
    private ApplicationContext ac = new ClassPathXmlApplicationContext("bean.xml");

    @Test
    public void testApp() throws Exception {
        DeptService deptServie = (DeptService) ac.getBean("deptService");
        System.out.println(deptServie.getClass());
        
        deptServie.save(new Dept());
    }
}