配置 spring druid 连接池

1、配置数据源

<?xml version="1.0" encoding="utf-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="
        http://www.springframework.org/schema/beans 
        http://www.springframework.org/schema/beans/spring-beans.xsd
 
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd
 
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd">


	<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"
		init-method="init" destroy-method="close">
		<!-- 基本属性 url、user、password -->
		<property name="url" value="jdbc:mysql://192.168.1.1:3306/dpim" />
		<property name="username" value="root" />
		<property name="password" value="123456" />

		<!-- 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 'x'" />
		<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="false" />
		<property name="maxPoolPreparedStatementPerConnectionSize"
			value="20" />

		<property name="proxyFilters">
			<list>
                               <!-- 配置监控统计拦截的filters -->
				<ref bean="stat-filter" />
                               <!-- 配置日志的filters -->
				<ref bean="log-filter" />
			</list>
		</property>
	</bean>
	<bean id="stat-filter" class="com.alibaba.druid.filter.stat.StatFilter">
		<property name="slowSqlMillis" value="3000" />
		<property name="logSlowSql" value="true" />
	</bean>
	<bean id="log-filter" class="com.alibaba.druid.filter.logging.Slf4jLogFilter">
	   <property name="resultSetLogEnabled" value="false" />
	</bean>
</beans>

2、配置mybatis，使用该数据源

	<tx:annotation-driven transaction-manager="transactionManager" />
	<bean id="transactionManager"
		class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource" />
	</bean>
	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
		<property name="dataSource" ref="dataSource" />
	</bean>
	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<property name="basePackage" value="com.hangyu.dpim.mapper" />
	</bean>

3、打开web监控页面，配置web.xml

<servlet>
    <servlet-name>DruidStatView</servlet-name>
    <servlet-class>com.alibaba.druid.support.http.StatViewServlet</servlet-class>
</servlet>
<servlet-mapping>
    <servlet-name>DruidStatView</servlet-name>
    <!-- 访问入口 -->
    <url-pattern>/druid/*</url-pattern>
</servlet-mapping>
<filter>
    <filter-name>DruidWebStatFilter</filter-name>
    <filter-class>com.alibaba.druid.support.http.WebStatFilter</filter-class>
    <init-param>
        <!-- 文件监控过滤 -->
        <param-name>exclusions</param-name>
        <param-value>*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*</param-value>
    </init-param>
    <init-param>
        <!-- 可以从uri查看该uri执行的sql语句 -->
        <param-name>profileEnable</param-name>
        <param-value>true</param-value>
    </init-param>
</filter>
<filter-mapping>
    <!-- 查看哪些uri被访问 -->
    <filter-name>DruidWebStatFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>