url=jdbc:postgresql://***.***.***.***:****/****
username=***
password=***

<!-- 阿里 druid 数据库连接池 --> 
 <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"> 
 <!-- 基本属性 url、user、password --> 
 <property name="url" value="${url}" /> 
 <property name="username" value="${username}" /> 
 <property name="password" value="${password}" /> 

 <!-- 配置初始化大孝最孝最大 --> 
 <property name="initialSize" value="1" /> 
 <property name="minIdle" value="1" /> 
 <property name="maxActive" value="20" /> 

 <!-- 配置获取连接等待超时的时间 --> 
 <property name="maxWait" value="60000" /> 

 <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 --> 
 <property name="timeBetweenEvictionRunsMillis" value="60000" /> 

 <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 --> 
 <property name="minEvictableIdleTimeMillis" value="300000" /> 

 <property name="validationQuery" value="SELECT 'x'" /> 
 <property name="testWhileIdle" value="true" /> 
 <property name="testOnBorrow" value="false" /> 
 <property name="testOnReturn" value="false" /> 

 <!-- 打开PSCache，并且指定每个连接上PSCache的大小 --> 
 <property name="poolPreparedStatements" value="true" /> 
 <property name="maxPoolPreparedStatementPerConnectionSize" value="20" /> 

 <!-- 配置监控统计拦截的filters，去掉后监控界面sql无法统计 --> 
 <property name="filters" value="stat" /> 
</bean> 

<filter>
  <filter-name>DruidWebStatFilter</filter-name>
  <filter-class>com.alibaba.druid.support.http.WebStatFilter</filter-class>
  <init-param>
   <param-name>exclusions</param-name>
   <param-value>*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*</param-value>
  </init-param>
 </filter>
 <filter-mapping>
  <filter-name>DruidWebStatFilter</filter-name>
  <url-pattern>/*</url-pattern>
 </filter-mapping>

 <servlet>
  <servlet-name>DruidStatView</servlet-name>
  <servlet-class>com.alibaba.druid.support.http.StatViewServlet</servlet-class>
 </servlet>
 <servlet-mapping>
  <servlet-name>DruidStatView</servlet-name>
  <url-pattern>/druid/*</url-pattern>
 </servlet-mapping>