数据库连接池配置文件 spring-datasource-druid.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns xmlns:xsi xmlns:contextt xmlns:jdbc
xmlns:util xsi:schemaLocation= <context:property-placeholder location="classpath:/configs/jdbc.properties" /> <!-- 通常来说,只需要修改initialSize、minIdle、maxActive。 如果用Oracle,则把poolPreparedStatements配置为true,mysql可以配置为false。 分库分表较多的数据库,建议配置为false --> <bean id="log-filter" class="com.alibaba.druid.filter.logging.Log4jFilter"> <property name="resultSetLogEnabled" value="false" /> </bean> <bean id="druidPool" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"> <!-- 基本属性 url、user、password --> <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="1" /> <property name="minIdle" value="1" /> <property name="maxActive" value="20" /> <!-- 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="60000" /> <!-- 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" /> <property name="validationQuery" value="SELECT sysdate FROM dual" /> <property name="testWhileIdle" value="true" /> <property name="testOnBorrow" value="false" /> <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" /> <!-- 配置监控统计拦截的filters --> <property name="filters" value="stat" /> <!-- 配置输出日志 --> <property name="proxyFilters"> <list> <ref bean="log-filter" /> </list> </property> </bean> </beans>
如果需要监视数据库性能,则还需要在web.xml中添加如下配置:
<!-- 监控数据库访问性能的配置 --> <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> </servlet>
启动服务后,访问:ip:端口号/项目名/druid/index.html,即可到达数据库性能监控页面。
另:
spring下mybatis的配置文件,需要注意的是 druidPool与spring-datasource-druid.xml中的druidPool是相对应的,不可缺少,所以此处把mybatis的配置文件也专门贴出来。
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns <!-- spring和MyBatis完美整合,不需要mybatis的配置映射文件 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="druidPool" /> <!-- 自动扫描mapping.xml文件 --> <property name="mapperLocations" value="classpath:/com/hnepsoft/framework/dao/mybatis/mapping/*.xml"></property> </bean> <!-- DAO接口所在包名,Spring会自动查找其下的类 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.hnepsoft.framework.dao.mybatis.dao" /> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" /> </bean> <bean id="sqlDao" class="com.hnepsoft.framework.dao.SqlDao"> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" /> </bean> <!-- 配置事务管理器 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="druidPool" /> </bean> <!-- 注解方式配置事物 --> <!-- <tx:annotation-driven transaction-manager="transactionManager" /> --> <!-- 拦截器方式配置事物 --> <tx:advice id="transactionAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="insert*" propagation="REQUIRED" /> <tx:method name="update*" propagation="REQUIRED" /> <tx:method name="delete*" propagation="REQUIRED" /> <tx:method name="get*" propagation="SUPPORTS" read-only="true" /> <tx:method name="find*" propagation="SUPPORTS" read-only="true" /> <tx:method name="select*" propagation="SUPPORTS" read-only="true" /> </tx:attributes> </tx:advice> <!-- Spring aop事务管理 --> <aop:config> <aop:pointcut id="transactionPointcut" expression="execution(* com.hnepsoft.framework.service..*Impl.*(..))" /> <aop:advisor pointcut-ref="transactionPointcut" advice-ref="transactionAdvice" /> </aop:config> </beans>