1.配置Druid的内置监控
首先在Maven项目的pom.xml中引入包
<dependency> ???<groupId>com.alibaba</groupId> ???<artifactId>druid</artifactId> ???<version>${druid-version}</version></dependency>2.引入包后配置spring的配置文件
<!--读取配置文件--><bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> ???<property name="locations"> ????????<list> ????????????<value>classpath:jdbc.properties</value> ????????</list> ????</property></bean><!-- Druid JNDI DataSource for J2EE environments --><bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"> ???<property name="url" value="${jdbc.url}" /> ???<property name="username" value="${jdbc.username}" /> ???<property name="password" value="${jdbc.password}" /> ???<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>然后在web.xml中打开监控服务
<!-- 添加druid监控--> ??<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><!-- 添加Web应用等监控--> ?<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>profileEnable</param-name> ???????<param-value>true</param-value> ???</init-param> ???<init-param> ???????<param-name>principalCookieName</param-name> ???????<param-value>USER_COOKIE</param-value> ???</init-param> ???<init-param> ???????<param-name>principalSessionName</param-name> ???????<param-value>USER_SESSION</param-value> ???</init-param></filter><filter-mapping> ???<filter-name>DruidWebStatFilter</filter-name> ???<url-pattern>/*</url-pattern></filter-mapping>
好了，经过上边三个步骤，就可以进行监控了。访问页面http://127.0.0.1:8080/{projectName}/druid/index.html就可以访问监控页面了，druid已经将数据友好的显示到页面上了，包括每条sql执行的次数，执行的时间，最慢时间等等很多详细信息，供我们参考，找到哪些执行效率低的耗时长的语句进行优化。同时提供数据源、sql防火墙，web应用，URI监控、Session监控，spring监控等，里面有详细的各种数据信息，大家可以参考查阅。projectName是项目名称
下边是监控结果页面截图
Druid 配置及内置监控，Web页面查看监控内容
原文地址：https://www.cnblogs.com/lr393993507/p/9580589.html