### jar ``` 先引入C3P0的jar包 com.springsource.com.mchange.v2.c3p0-0.9.1.2.jar ``` ``` 编写配置文件 <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="driverClass" value="com.mysql.jdbc.Driver"/> <property name="jdbcUrl" value="jdbc:mysql:///spring"/> <property name="user" value="root"/> <property name="password" value="root"/> </bean> ```