DruidDataSource学习

DruidDataSource 这个数据源集成后有监控界面，对于SQL与项目的一些情况。

 

1 jar包 

  

		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>druid</artifactId>
			<version>1.0.7</version>
		</dependency>

 2  spring配置 

  

<!-- JNDI DataSource for J2EE environments -->  
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">  
        <property name="url" value="jdbc:mysql://127.0.0.1:3306/XXX" />  
        <property name="username" value="root" />  
        <property name="password" value="root" />  
  
        <property name="maxActive" value="20" />  
        <property name="initialSize" value="1" />  
        <property name="maxWait" value="60000" />  
        <property name="minIdle" value="1" />  
  
        <property name="timeBetweenEvictionRunsMillis" value="3000" />  
        <property name="minEvictableIdleTimeMillis" value="300000" />  
  
        <property name="validationQuery" value="SELECT 'x' FROM DUAL" />  
        <property name="testWhileIdle" value="true" />  
        <property name="testOnBorrow" value="false" />  
        <property name="testOnReturn" value="false" />  
        <!-- mysql 不支持 poolPreparedStatements-->  
        <!--<property name="poolPreparedStatements" value="true" />-->  
        <!--<property name="maxPoolPreparedStatementPerConnectionSize" value="20" />-->  
  
        <!-- 开启Druid的监控统计功能 -->  
        <property name="filters" value="stat" />  
  
    </bean>  

 

3 配置监控的servlet 

  

<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>  

 

4 通过访问druid/index.html 可以查看项目的运行情况，也可以分析SQL语句的执行情况，便于调优