druid监控配置

druid相对于传统的c3p0和dbcp及其dbcp2等多个很多新特性

可以在线监控数据库及其表和sql以及Controller的requestMapping和对应的业务方面请求和session等

是个非常好的数据库连接池

一、添加如下依赖

<!-- druid -->
    <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.0.24</version>
        </dependency>

二、web.xml配置

注意：放在前端控制器之前，也就是dispatchServlet之前

    <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>
        <init-param>
            <!-- 用户名 -->
            <param-name>loginUsername</param-name>
            <param-value>druid</param-value>
        </init-param>
        <init-param>
            <!-- 密码 -->
            <param-name>loginPassword</param-name>
            <param-value>druid</param-value>
        </init-param>
    </servlet>
    <servlet-mapping>
        <servlet-name>DruidStatView</servlet-name>
        <url-pattern>/druid/*</url-pattern>
    </servlet-mapping>

三、spring-mybatis.xml配置

<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"> 
        <!-- 基本属性 url、user、password -->
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://192.168.126.128:3306/test" />
        <property name="username" value="root" />
        <property name="password" value="1234" />
        <property name="filters" value="stat,wall,config,log4j" />
        <!-- 配置初始化大小、最小、最大 -->
        <property name="initialSize" value="1" />
        <property name="maxActive" value="100"/>
        <property name="minIdle" value="10"/>
            <!-- 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="600000" />
      
        <!-- 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="3000000" />
       
        <property name="validationQuery" value="SELECT 'x' FROM DUAL" />
        <property name="testWhileIdle" value="true" />
        <property name="testOnBorrow" value="true" />
        <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" />
         
        <!-- 超过时间限制是否回收 -->
        <property name="removeAbandoned" value="true" /> 
        <!-- 超时时间；单位为秒。180秒=3分钟 -->
        <property name="removeAbandonedTimeout" value="18000" /> 
        <!-- 关闭abanded连接时输出错误日志 -->
        <property name="logAbandoned" value="true" />
        <property name="useUnfairLock" value="true"></property>
        <property name="proxyFilters">
            <list>
                <ref bean="stat-filter"/>
                <ref bean="log-filter"/>
            </list>
        </property>
       
      
    </bean>
     
     
      <!-- 慢SQL记录 -->
    <bean id="stat-filter" class="com.alibaba.druid.filter.stat.StatFilter">
        <!-- 慢sql时间设置,即执行时间大于200毫秒的都是慢sql -->
        <property name="slowSqlMillis" value="200"/>
        <property name="logSlowSql" value="true"/>
    </bean>
 
    <bean id="log-filter" class="com.alibaba.druid.filter.logging.Log4jFilter">
        <property name="dataSourceLogEnabled" value="true" />
        <property name="statementExecutableSqlLogEnable" value="true" />
    </bean><br><br>    <bean id="druid-stat-interceptor"<br>        class="com.alibaba.druid.support.spring.stat.DruidStatInterceptor"><br>    </bean><br><br>    <bean id="druid-stat-pointcut" class="org.springframework.aop.support.JdkRegexpMethodPointcut"<br>        scope="prototype"><br>        <property name="patterns"><br>            <list><br>                <value>cn.pms.service.*</value><br>                <value>cn.pms.controller.*</value><br>            </list><br>        </property><br>    </bean><br>    <aop:config><br>        <aop:advisor advice-ref="druid-stat-interceptor"<br>            pointcut-ref="druid-stat-pointcut" /><br>    </aop:config><br><br>
 
     
    