ssh项目搭建时，Spring的bean的基本配置

主要配置了： 数据库实例、 Spring管理SessionFactory 、 事务的相关配置 、 aop配置

<?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:p="http://www.springframework.org/schema/p"    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. 连接池实例 -->    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">        <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/hib_demo"></property>        <property name="driverClass" value="com.mysql.jdbc.Driver"></property>        <property name="user" value="root"></property>        <property name="password" value="root"></property>        <property name="initialPoolSize" value="3"></property>        <property name="maxPoolSize" value="6"></property>    </bean>    <!-- 2. Spring管理SessionFactory 【全部配置都写到spring中】 -->    <!-- # 注入DataSource、 注入常用配置属性、映射配置属性 -->    <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">        <property name="dataSource" ref="dataSource"></property>        <property name="hibernateProperties">            <props>                 <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>                 <prop key="hibernate.show_sql">true</prop>                 <prop key="hibernate.hbm2ddl.auto">update</prop>            </props>        </property>        <property name="mappingLocations">            <list>                <value>classpath:cn/itcast/entity/*.hbm.xml</value>            </list>        </property>    </bean>    <!-- 3. 事务相关配置 -->    <!-- 3.1 事务管理器类 -->    <bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">        <property name="sessionFactory" ref="sessionFactory"></property>    </bean>    <!-- 3.2 事务增强(如何管理事务)-->    <tx:advice id="txAdvice" transaction-manager="txManager">        <tx:attributes>            <tx:method name="get*" read-only="true"/>            <tx:method name="find*" read-only="true"/>            <tx:method name="*" read-only="false"/>        </tx:attributes>    </tx:advice>    <!-- 3.3 Aop配置 = 切入点表达式(拦截目标对象，生成代理)  + 事务增强应用-->    <aop:config>        <aop:pointcut expression="execution(* cn.itcast.service.impl.*.*(..))" id="pt"/>        <aop:advisor advice-ref="txAdvice" pointcut-ref="pt"/>    </aop:config></beans>