該項(xiàng)目開發(fā)框架采用的druid數(shù)據(jù)源，該數(shù)據(jù)源的配置還是非常豐富的，可以監(jiān)控所有執(zhí)行的sql及service操作。常用配置如下所示：

web.xml增加數(shù)據(jù)源監(jiān)控配置

 <!--設(shè)置Druid 數(shù)據(jù)源監(jiān)控 -->
    <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>
        <init-param>
            <param-name>principalSessionName</param-name>
            <param-value>userSession</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>
            <param-name>resetEnable</param-name>
            <param-value>false</param-value>
        </init-param>
    </servlet>
    <servlet-mapping>
        <servlet-name>DruidStatView</servlet-name>
        <url-pattern>/druid/*</url-pattern>
    </servlet-mapping>

這地方定義監(jiān)控哪些請(qǐng)求，druid也是通過(guò)servlet來(lái)處理的。

applicationContext.xml配置數(shù)據(jù)源

<bean id="logFilter" class="com.alibaba.druid.filter.logging.Slf4jLogFilter">
        <property name="statementExecutableSqlLogEnable" value="true"/>
    </bean>
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"
          destroy-method="close">
        <property name="driverClassName" value="${jdbc.driverClassName}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
        <!-- 配置初始化大小、最小、最大 -->
        <property name="initialSize" value="${jdbc.initialSize}"/>
        <property name="minIdle" value="1"/>
        <property name="maxActive" value="${jdbc.maxActive}"/>
        <!-- 配置獲取連接等待超時(shí)的時(shí)間 -->
        <property name="maxWait" value="60000"/>
        <!-- 配置間隔多久才進(jìn)行一次檢測(cè)，檢測(cè)需要關(guān)閉的空閑連接，單位是毫秒 -->
        <property name="timeBetweenEvictionRunsMillis" value="60000"/>
        <!-- 配置一個(gè)連接在池中最小生存的時(shí)間，單位是毫秒 -->
        <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"/>
        <!-- 配置監(jiān)控統(tǒng)計(jì)攔截的filters -->
        <property name="filters" value="stat"/>
        <property name="proxyFilters">
            <list>
                <ref bean="logFilter"/>
            </list>
        </property>
    </bean>

 <!-- druid監(jiān)控-->
    <bean id="druid-stat-interceptor"
          class="com.alibaba.druid.support.spring.stat.DruidStatInterceptor">
    </bean>

    <bean id="druid-stat-pointcut" class="org.springframework.aop.support.JdkRegexpMethodPointcut" scope="prototype">
        <property name="patterns">
            <list>
                <value>com.critc.*.*.service.*</value>
            </list>
        </property>
    </bean>

    <aop:config>
        <aop:advisor advice-ref="druid-stat-interceptor" pointcut-ref="druid-stat-pointcut"/>
    </aop:config>

這地方定義druid對(duì)應(yīng)的log，可以攔截filter等，這樣系統(tǒng)運(yùn)行后輸入：http://localhost:8080/druid可以查看當(dāng)前的監(jiān)控情況：

數(shù)據(jù)源基本信息：

數(shù)據(jù)源基本信息.png

Sql執(zhí)行情況：

sql執(zhí)行情況.png

Service執(zhí)行情況

service執(zhí)行情況.png

當(dāng)然如果開發(fā)水平很高的話，完全可以自己開發(fā)一套這樣的監(jiān)控在程序里面。