连接池

java.lang.NoClassDefFoundError: com/mchange/v2/c3p0/DataSources
没有c3p0包。
java.lang.NoClassDefFoundError: com/mchange/v2/c3p0/DataSources
还是没有包啊，再看看哦，没有啊

装上log4j.properties发现、
org.hibernate.connection.C3P0ConnectionProvider.configure(81) | C3P0 using driver: com.mysql.jdbc.Driver at URL: jdbc:mysql://localhost:3306/zhangwei
INFO [http-8080-1] org.hibernate.connection.C3P0ConnectionProvider.configure(82) | Connection properties: {user=root, password=****}
INFO [http-8080-1] org.hibernate.connection.C3P0ConnectionProvider.configure(85) | autocommit mode: false

只配如下就自动加载连接池：
<property name="hibernate.c3p0.min_size">20</property>
<property name="hibernate.c3p0.max_size">50</property>
-----------------------------------------------------
<property name="hibernate.c3p0.max_size">100</property><!-- 最大连接数 -->
   <property name="hibernate.c3p0.min_size">5</property><!-- 最小连接数 -->
   <property name="hibernate.c3p0.timeout">50000</property><!-- 连接的最大空闲时间 -->
   <property name="hibernate.c3p0.max_statements">100</property><!--被缓存的预备编译语句最大数 -->
   <property name="hibernate.c3p0.idle_test_period">3000</property><!-- 连接自动生效前的空闲时间 -->
   <property name="dialect"><!-- 数据库方言 -->
    org.hibernate.dialect.SQLServerDialect
   </property>
--------------------------------------------------------------

<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">   <property name="driverClass" value="com.mysql.jdbc.Driver"/>
  <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/zhangwei"/>
  <property name="user" value="root"/>
  <property name="password" value="path"/>
  </bean>
-----------------
<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>
</props>
</property>
<property name="mappingResources"> <list>
<value>com/User.hbm.xml</value>
<value>./Image.hbm.xml</value>
<value>com/Image.hbm.xml</value></list>
</property></bean>