<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">       <property name="url" value="http://www.mamicode.com/${jdbc_url}" />      <property name="username" value="http://www.mamicode.com/${jdbc_user}" />      <property name="password" value="http://www.mamicode.com/${jdbc_password}" />             <property name="filters" value="http://www.mamicode.com/stat" />         <property name="maxActive" value="http://www.mamicode.com/20" />      <property name="initialSize" value="http://www.mamicode.com/1" />      <property name="maxWait" value="http://www.mamicode.com/60000" />      <property name="minIdle" value="http://www.mamicode.com/1" />         <property name="timeBetweenEvictionRunsMillis" value="http://www.mamicode.com/60000" />      <property name="minEvictableIdleTimeMillis" value="http://www.mamicode.com/300000" />         <property name="validationQuery" value="http://www.mamicode.com/SELECT ‘x‘" />      <property name="testWhileIdle" value="http://www.mamicode.com/true" />      <property name="testOnBorrow" value="http://www.mamicode.com/false" />      <property name="testOnReturn" value="http://www.mamicode.com/false" />             <property name="poolPreparedStatements" value="http://www.mamicode.com/true" />      <property name="maxPoolPreparedStatementPerConnectionSize" value="http://www.mamicode.com/50" />  </bean>