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>