web开发中添加数据源实现思路

<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">   <property name="driverClassName">      <value>org.logicalcobwebs.proxool.ProxoolDriver</value>   </property>   <property name="url">      <value>proxool.db</value>   </property> </bean>

<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">    <property name="dataSource">      <ref local="dataSource"></ref>   </property>   <property name="hibernateProperties">     <props>       <prop key="hibernate.connection.provider_class"> org.hibernate.connection.C3P0ConnectionProvider</prop>       <!-- 是否将运行期生成的SQL输出到日志以供调试 -->       <prop key="hibernate.show_sql">true</prop>       <!--指定连接的语言-->       <prop key="dialect"> org.hibernate.dialect.MySQLDialect </prop>       <!--是否收集有助于性能调节的统计数据-->       <prop key="hibernate.generate_statistics">true</prop>       <!--是否自动重新连接-->       <prop key="hibernate.autoReconnect">true</prop>       <!--是否自动释放连接-->       <prop key="hibernate.connection.release_mode">auto</prop>       <!--缓存配置-->       <prop key="hibernate.cache.provider_class">org.hibernate.cache.EhCacheProvider </prop>       <prop key="hibernate.cache.use_second_level_cache"> false  </prop>       <prop key="hibernate.cache.use_query_cache">false</prop>    </props> </property> <property name="mappingResources">    <list>      <value>映射表</value>    </list> </property> </bean>

 <bean id="jdbcTemplatelr" class="org.springframework.jdbc.core.JdbcTemplate">   <property name="dataSource">      <ref bean="dataSourceLrsql"/>   </property> </bean> <bean id="basePageDao" class="com.BasePageDaoHibernateImpl">   <property name="jdbcTemplate">      <ref bean="jdbcTemplatelr"/>   </property> </bean>