数据库中间件druid更换c3p0以及druid数据源监控配置

<dependency>

<groupId>com.alibaba</groupId>

<artifactId>druid</artifactId>

<version>0.2.26</version>

</dependency>

<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">

 <!-- 基本属性 url、user、password 连接信息可以写着或写配置文件-->

<property name="url" value="${jdbc.url}" />

<property name="username" value="${jdbc.username}" />

<property name="password" value="${jdbc.password}" />

<!-- 配置监控统计拦截的filters 这个表示此数据源是否加入监控-->

<property name="filters" value="stat" />

<!-- 配置初始化大小、最小、最大 -->

<property name="maxActive" value="20" />

<property name="initialSize" value="1" />

<property name="maxWait" value="60000" />

<property name="minIdle" value="1" />

 <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->

<property name="timeBetweenEvictionRunsMillis" value="60000" />

<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" />

<property name="poolPreparedStatements" value="true" />

<property name="maxPoolPreparedStatementPerConnectionSize" value="50" />

</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>