一、概述

  • 二、整合步骤
  • 一、概述

      Spring整合Hibernate有什么好处?

      1、由IOC容器来管理Hibernate的SessionFactory

      2、让Hibernate使用上Spring的声明式事务

    二、整合步骤

      整合前准备:

      持久化类:

    复制代码
    @Entity
    public class Book
    {
        private Integer id;
        private String bookName;
        private String isbn;
        private int price;
        private int stock;
        public Integer getId()
        {
            return id;
        }
        public void setId(Integer id)
        {
            this.id = id;
        }
        public String getBookName()
        {
            return bookName;
        }
        public void setBookName(String bookName)
        {
            this.bookName = bookName;
        }
        public String getIsbn()
        {
            return isbn;
        }
        public void setIsbn(String isbn)
        {
            this.isbn = isbn;
        }
        public int getPrice()
        {
            return price;
        }
        public void setPrice(int price)
        {
            this.price = price;
        }
        public int getStock()
        {
            return stock;
        }
        public void setStock(int stock)
        {
            this.stock = stock;
        }
        public Book(Integer id, String bookName, String isbn, int price, int stock)
        {
            super();
            this.id = id;
            this.bookName = bookName;
            this.isbn = isbn;
            this.price = price;
            this.stock = stock;
        }
    }
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      Dao层:

    复制代码
    public interface BookDao
    {
        public String findBookById(int id);
        
        public void saveBook(Book book);
    }
    复制代码

      DaoImpl:

    复制代码
    @Repository
    public class BookDaoImpl implements BookDao
    {
        @Autowired
        private SessionFactory sessionFactory;
        
        //获取和当前线程绑定的Seesion
        private Session getSession()
        {
            return sessionFactory.getCurrentSession();
        }
        public String findBookById(int id)
        {
            String hql="SELECT bookName from Book where id=?";
            Query query=getSession().createQuery(hql).setInteger(0, id);
            String str= query.uniqueResult().toString();
            return str;
        }
        public void saveBook(Book book)
        {
            getSession().save(book);
        }
    }
    复制代码

      Service层:

    public interface BookService
    {
        public String findBookById(int id);
        public void saveBook(Book book);
    }

      ServiceImpl:

    复制代码
    @Service
    public class BookServiceImpl implements BookService
    {
        @Autowired
        private BookDao bookDao;
        public String findBookById(int id)
        {
            return bookDao.findBookById(id);
        }
        public void saveBook(Book book)
        {
            bookDao.saveBook(book);
            
        }
    }
    复制代码

      1、加入Hibernate

    • 加入hibernate jar包
    • 添加Hibernate的配置文件:hibernate.cfg.xml
    复制代码
    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE hibernate-configuration PUBLIC
            "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
            "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
    <hibernate-configuration>
        <session-factory>
            <!-- 配置Hibernate的基本属性 -->
            <!-- 1.数据源配置到IOC容器中 -->
            <!-- 2.关联的.hbm.xml也在IOC容器配置SessionFactory实例 -->
            <!-- 3.配置Hibernate的基本属性:方言,SQL显示及格式化,生成数据表的策略以及二级缓存 -->
            <property name="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</property>
            <property name="hibernate.show_sql">true</property>
            <property name="hbm2ddl.auto">update</property>
        </session-factory>
    </hibernate-configuration>
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    • 编写持久化类对应的.hbm.xml文件
    复制代码
    <?xml version="1.0"?>
    <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
    <!-- Generated 2016-3-15 16:30:05 by Hibernate Tools 3.4.0.CR1 -->
    <hibernate-mapping>
        <class name="com.demo.ssm.po.Book" table="BOOK">
            <id name="id" type="java.lang.Integer">
                <column name="ID" />
                <generator class="native" />
            </id>
            <property name="bookName" type="java.lang.String">
                <column name="BOOK_NAME" />
            </property>
            <property name="isbn" type="java.lang.String">
                <column name="ISBN" />
            </property>
            <property name="price" type="int">
                <column name="PRICE" />
            </property>
            <property name="stock" type="int">
                <column name="STOCK" />
            </property>
        </class>
    </hibernate-mapping>
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      2、加入Spring

    • 加入spring jar包
    • 加入Spring配置文件
    复制代码
    <?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:tx="http://www.springframework.org/schema/tx"
        xmlns:aop="http://www.springframework.org/schema/aop"
        xmlns:context="http://www.springframework.org/schema/context"
        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-4.1.xsd
            http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.1.xsd
            http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.1.xsd">
        <context:component-scan base-package="com.demo.ssm"></context:component-scan>
        <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/test" />
            <property name="username" value="root"></property>
            <property name="password" value="281889"></property>
        </bean>  
        <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean" lazy-init="false">
            <!-- 注入datasource,给sessionfactoryBean内setdatasource提供数据源 -->
            <property name="dataSource" ref="dataSource" />
            <property name="configLocation" value="classpath:hibernate.cfg.xml"></property>
            <!-- //加载实体类的映射文件位置及名称 -->
            <property name="mappingLocations" value="classpath:com/demo/ssm/po/*.hbm.xml"></property>
        </bean>  
        
        <!-- 配置Spring声明式事务 -->
        <bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
            <property name="sessionFactory" ref="sessionFactory"></property>
        </bean> 
        <!-- 配置事务事务属性 -->
         <tx:advice id="txAdvice" transaction-manager="transactionManager">
            <tx:attributes>
                <tx:method name="get*" read-only="true"/>
                <tx:method name="*"/>
            </tx:attributes>
        </tx:advice>
        <!-- 配置事务切点,并把切点和事务属性关联起来 -->
        <aop:config>
            <aop:pointcut expression="execution(* com.demo.ssm.daoImpl.*.*(..))" id="txPointcut"/>
            <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointcut"/>
        </aop:config>
    </beans>
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      3、编写测试类

    复制代码
    public class BookDaoImplTest
    {
        private ApplicationContext context=null;
        private BookService bookService=null;
        
        {
             context= new ClassPathXmlApplicationContext("applicationContext.xml");  
             bookService=context.getBean(BookService.class);
        }
        @Test
        public void test()
        {
            DataSource dataSource=(DataSource) context.getBean(DataSource.class);
            System.out.println(dataSource);
        }
        @Test
        public void test2()
        {
            String bookName=bookService.findBookById(1);
            System.out.println(bookName);
        }
        
        @Test
        public void test3()
        {
            bookService.saveBook(new Book(2, "android源码分析", "1002", 45, 10));
        }
    }
    复制代码

     

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