关于spring配置文件配置

<!-- 使用annotation 自动注册bean,并保证@Required,@Autowired的属性被注入 -->
<context:component-scan base-package="com.huawei" />


<!-- 数据源配置,主要用于开发测试环境 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close">
<property name="driverClass" value="${jdbc.driverClassName}" />
<property name="jdbcUrl" value="${jdbc.url}" />
<property name="user" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
<property name="initialPoolSize">
<value>10</value>
</property>
<property name="minPoolSize">
<value>5</value>
</property>
<property name="maxPoolSize">
<value>30</value>
</property>
<property name="acquireIncrement">
<value>5</value>
</property>
<property name="maxIdleTime">
<value>10</value>
</property>
<property name="maxStatements">
<value>0</value>
</property>
</bean>

<!-- Hibernate 配置 -->
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="namingStrategy">
<bean class="org.hibernate.cfg.ImprovedNamingStrategy" />
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">${hibernate.dialect}</prop>
<prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
<prop key="hibernate.jdbc.fetch_size ">30</prop>
<prop key="hibernate.jdbc.batch_size ">25</prop>
<prop key="hibernate.format_sql">${hibernate.format_sql}</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
<!-- hibernate 二级缓存配置 -->
<prop key="hibernate.cache.use_second_level_cache">true</prop>
<prop key="hibernate.cache.use_query_cache">true</prop>
<prop key="hibernate.cache.provider_class">org.hibernate.cache.EhCacheProvider</prop>
</props>
</property>