Spring笔记④--spring整合hibernate链接数据库

整合hibernate

整合什么？

1. 有ioc容器来管理hibernate的SessionFactory
2. 让hibernate使用上spring的声明式事务

先加入hibernate 驱动包

新建hibernate.cfg.xml

配置hibernate的基本属性

1. 数据源需配置到IOC 容器中，所以在此处不再需要配置数据源
2. 关联的.hbm.xml也在IOC 容器配置SessionFactory实例时进行配置。
3. 配置hibernate的基本属性：方言，sql的显示及格式化，生成数据表的策略以及二级缓存等。

<property name="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</property>

<property name="hibernate.show_sql">true</property>

<property name="hibernate.format_sql">true</property>

<property name="hibernate.hbm2ddl.auto">update</propert

Ctrl+shift+T打开源码文件

在加入spring

Db.properties

jdbc.user=root

jdbc.password=root

jdbc.driverClass=com.mysql.jdbc.Driver

jdbc.jdbcUrl=jdbc:mysql://localhost:3306/spring

jdbc.initPoolSize=5

jdbc.maxPoolSize=10

配置数据源

需导入

    xmlns:context="http://www.springframework.org/schema/context"

<!-- 配置数据源 -->

    <context:property-placeholder location="classpath:db.properties"/>

    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">

        <property name="user" value="${jdbc.user}"></property>

        <property name="password" value="${jdbc.password}"></property>

        <property name="driverClass" value="${jdbc.driverClass}"></property>

        <property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>

        <property name="initialPoolSize" value="${jdbc.initPoolSize}"></property>

        <property name="maxPoolSize" value="${jdbc.maxPoolSize}"></property>

    </bean>

测试类测试能否拿到datasource

public class Go {

    private static ApplicationContext ctx=new ClassPathXmlApplicationContext("applicationContext.xml");

    public static void main(String[] args) throws SQLException {

        DataSource d= ctx.getBean(DataSource.class);

        System.out.println(d.getConnection());

    }

}

通过spring来操作hibernate且使用spring的事务

Spring的applicationContext.xml配置文件

<?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-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

           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">

 

   <bean id="dataSource"

      class="org.apache.commons.dbcp.BasicDataSource">

      <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>

      <property name="url"

         value="jdbc:mysql://localhost:3306/spring?userUnicode=true&amp;characterEnchoding=utf-8">

      </property>

      <property name="username" value="root"></property>

      <property name="password" value="root"></property>

   </bean>

  

   <bean id="sessionFactory"

      class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">

      <property name="dataSource">

         <ref bean="dataSource" />

      </property>

      <!-- 指向hibernate的配置文件 -->

      <property name="configLocation" value="classpath:hibernate.cfg.xml"></property>

      <property name="mappingLocations" value="classpath:com/ssh/spring_hibernate/entity/*.hbm.xml"></property>

   </bean>

  

  

   <bean id="transactionManager"

      class="org.springframework.orm.hibernate4.HibernateTransactionManager">

      <property name="sessionFactory" ref="sessionFactory" />

   </bean>

  

   <!-- 配置事务属性 -->

   <tx:advice id="txAdvice" transaction-manager="transactionManager">

      <tx:attributes>

         <tx:method name="get*" read-only="true"/>

         <tx:method name="*"/>

      </tx:attributes>

   </tx:advice>

  

   <!-- 配置事务的切点 -->

   <aop:config>

      <aop:pointcut expression="execution(* com.ssh.spring_hibernate.service.*.*(..))"

      id="txPointcut"/>

      <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointcut"/>

   </aop:config>

   <tx:annotation-driven transaction-manager="transactionManager" /></beans>

两个Javabean

Account

   private Integer id;

   private int balance;

   private String username;

  

Book

private Integer id;

   private String bookName;

   private String isbn;

   private int stock;

   private int price;

对应的hbm.xml

<?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 2015-8-28 12:55:21 by Hibernate Tools 3.4.0.CR1 -->

<hibernate-mapping>

    <class name="com.ssh.spring_hibernate.entity.Account" table="SH_ACCOUNT">

        <id name="id" type="java.lang.Integer">

            <column name="ID" />

            <generator class="native" />

        </id>

        <property name="username" type="java.lang.String">

            <column name="USER_NAME" />

        </property>

        <property name="balance" type="int">

            <column name="BALANCE" />

        </property>

    </class>

</hibernate-mapping>

<?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 2015-8-28 12:55:21 by Hibernate Tools 3.4.0.CR1 -->

<hibernate-mapping>

    <class name="com.ssh.spring_hibernate.entity.Book" table="SH_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>