spring + hibernate+ C3P0+MYSQL怎么配置
我为这个问题专门写了一个测试用例：

看下面的几个文件：
可能贴的顺序上有点问题，楼主可以自己整理一下：



(1) applicationContext.xml

---------------------

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN" "http://www.springframework.org/dtd/spring-beans-2.0.dtd">

<beans>
<!-- 引入参数配置文件 -->
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
  <property name="locations">
   <list>
    <value>jdbc.properties</value>
   </list>
  </property>
</bean>

<!-- 配置数据源  -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
  <property name="driverClass"><value>${jdbc.driverClass}</value></property>
  <property name="jdbcUrl"><value>${jdbc.url}</value></property>
  <property name="user"><value>${jdbc.user}</value></property>
  <property name="password"><value>${jdbc.password}</value></property>
  <property name="initialPoolSize"><value>${jdbc.initialPoolSize}</value></property>
  <property name="minPoolSize"><value>${jdbc.minPoolSize}</value></property>
  <property name="maxPoolSize"><value>${jdbc.maxPoolSize}</value></property>
</bean>


<!-- spring Hibernate SessionFactory -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
  <property name="dataSource">
   <ref bean="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.format_sql">true</prop>
    <prop key="hibernate.jdbc.fetch_size">80</prop>
    <prop key="hibernate.jdbc.batch_size">35</prop>
   </props>
  </property>
  <property name="mappingResources">
   <list>       
    <value>com/spring/demo/bean/mapping/Book.hbm.xml</value>                                               
   </list>
  </property>
</bean>



<!-- 事务管理器 -->
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
  <property name="sessionFactory">
   <ref local="sessionFactory" />
  </property>
</bean>


<!-- 事务代理拦截器的配置 -->
<bean id="baseTransactionProxy" abstract="true" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
  <property name="transactionManager">
   <ref bean="transactionManager" />
  </property>
  <property name="transactionAttributes">
   <props>
    <prop key="insert*">PROPAGATION_REQUIRED</prop>
    <