c3p0在Spring中的配置(2)-优快云博客

本文链接：https://blog.youkuaiyun.com/iteye_10359/article/details/81762411

本文介绍如何使用Spring框架配置C3P0连接池数据源，通过PropertyPlaceholderConfigurer来加载外部properties文件中的数据库连接参数，并应用于ComboPooledDataSource实例。

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<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>

===================================

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