SSM+Druid第一次学习
1.在mybatis.xml中配置数据源
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"> <property name="driverClassName" value="${db.driver}" /> <property name="url" value="${db.url}" /> <property name="username" value="${db.username}" /> <property name="password" value="${db.password}" /> <!-- 初始化连接数量 --> <property name="initialSize" value="5" /> <!-- 最大连接数 --> <property name="maxActive" value="100" /> <!-- 最小连接数 --> <property name="minIdle" value="5" /> <!-- 配置获取连接等待超时的时间 --> <property name="maxWait" value="120000" /> <!-- 超过时间限制是否回收 --> <property name="removeAbandoned" value="true" /> <!-- 超过时间限制多长 --> <property name="removeAbandonedTimeout" value="1800" /> <!-- 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="120000" /> <!-- 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="300000" /> <!-- 用来检测连接是否有效的sql,要求是一个查询语句 --> <property name="validationQuery" value="SELECT 1" /> <!-- 申请连接的时候检测 --> <property name="testWhileIdle" value="true" /> <!-- 申请连接时执行validationQuery检测连接是否有效,配置为true会降低性能 --> <property name="testOnBorrow" value="false" /> <!-- 归还连接时执行validationQuery检测连接是否有效,配置为true会降低性能 --> <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" /> <property name="defaultAutoCommit" value="false" /> <!-- 配置监控统计拦截的filters --> <property name="filters" value="stat"/> </bean>
2.在web.xml中配置Druid拦截器(用于URL监控等功能)
<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>/public/*,*.js,*.css,/druid*,*.jsp,*.swf,*.json</param-value> </init-param> <init-param> <param-name>principalSessionName</param-name> <param-value>sessionInfo</param-value> </init-param> <init-param> <param-name>profileEnable</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>druidWebStatFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>
3.在web.xml中配置druid监控servlet
<servlet> <servlet-name>druidStatView</servlet-name> <servlet-class>com.alibaba.druid.support.http.StatViewServlet</servlet-class> <init-param> <!-- 允许清空统计数据 --> <param-name>resetEnable</param-name> <param-value>true</param-value> </init-param> <init-param> <param-name>loginUsername</param-name> <param-value><!--登陆时用户名--></param-value> </init-param> <init-param> <param-name>loginPassword</param-name> <param-value><!--登陆时密码--></param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>druidStatView</servlet-name> <url-pattern>/druid/*</url-pattern> </servlet-mapping>
4.配置完成后在浏览器打开http://ip:port/druid/login.html
使用配置的用户名密码登陆