c3p0在Spring中的配置(2)

<beans>
<bean id="placeholderConfig"
   class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
   <property name="location">
    <value>classpath:init.properties</value>
   </property>
</bean>

<bean id="dataSource"
   class="com.mchange.v2.c3p0.ComboPooledDataSource"
   destroy-method="close" dependency-check="default">
   <property name="driverClass">
    <value>${dataSource.driverClassName}</value>
   </property>
   <property name="jdbcUrl">
    <value>${dataSource.url}</value>
   </property>
   <property name="user">
    <value>${dataSource.username}</value>
   </property>
   <property name="password">
    <value>${dataSource.password}</value>
   </property>
   <property name="acquireIncrement">
    <value>${c3p0.acquireIncrement}</value>
   </property>
   <property name="initialPoolSize">
    <value>${c3p0.initialPoolSize}</value>
   </property>
   <property name="minPoolSize">
    <value>${c3p0.minPoolSize}</value>
   </property>
   <property name="maxPoolSize">
    <value>${c3p0.maxPoolSize}</value>
   </property>
   <property name="maxStatements">
    <value>${c3p0.maxStatements}</value>
   </property>
   <property name="numHelperThreads">
    <value>${c3p0.numHelperThreads}</value>
   </property>
   <property name="maxIdleTime">
    <value>${c3p0.maxIdleTime}</value>
   </property>
</bean>

</beans>

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可以将具体的数据写到properties文件当中,这里写到一个叫init.properties的文件当中

dataSource.type=mysql
dataSource.driverClassName=com.mysql.jdbc.Driver
dataSource.url=jdbc:mysql://localhost:3306/computer
dataSource.username=root
dataSource.password=123456

c3p0.acquireIncrement=3
c3p0.idleConnectionTextPeriod=900
c3p0.minPoolSize=2
c3p0.maxPoolSize=50
c3p0.maxStatements=100
c3p0.numHelperThreads=10
c3p0.maxIdleTime=600
c3p0.initialPoolSize=3