1.application.properties配置
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:p="http://www.springframework.org/schema/p"
xmlns:util="http://www.springframework.org/schema/util" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:cache="http://www.springframework.org/schema/cache"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/util
http://www.springframework.org/schema/util/spring-util.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<!-- 自动扫描spring注解，排除springmvc已扫描的Controller注解 -->
<context:component-scan base-package="com.ln.web">
<context:exclude-filter type="annotation"
expression="org.springframework.stereotype.Controller" />
</context:component-scan>
<!-- mybatis与spring整合 -->
<!-- 引入配置文件 -->
<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath*:application.properties</value>
</list>
</property>
</bean>
<!-- dataSource 配置 -->
<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="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
<!-- 配置初始化大小、最小、最大 -->
<property name="initialSize" value="${ds.initialSize}" />
<property name="minIdle" value="${ds.minIdle}" />
<property name="maxActive" value="${ds.maxActive}" />
<!-- 配置获取连接等待超时的时间 -->
<property name="maxWait" value="${ds.maxWait}" />
<!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->
<property name="timeBetweenEvictionRunsMillis" value="${ds.timeBetweenEvictionRunsMillis}" />
<!-- 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="${ds.minEvictableIdleTimeMillis}" />
</bean>
<!-- 配置sqlSessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="configLocation" value="classpath:mybatis-config.xml" />
<property name="dataSource" ref="dataSource" />
<property name="mapperLocations" value="classpath:com/ln/web/dao/*.xml"></property>
</bean>
<!-- 对dataSource 数据源进行事务管理 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- 扫描mapper接口 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.ln.web.dao"></property>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
</bean>
<!-- 事务管理 通知 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<!-- 对insert,update,delete 开头的方法进行事务管理,只要有异常就回滚 -->
<tx:method name="insert*" propagation="REQUIRED" rollback-for="java.lang.Throwable"/>
<tx:method name="update*" propagation="REQUIRED" rollback-for="java.lang.Throwable"/>
<tx:method name="delete*" propagation="REQUIRED" rollback-for="java.lang.Throwable"/>
<!-- select,count开头的方法,开启只读,提高数据库访问性能 -->
<tx:method name="select*" read-only="true"/>
<tx:method name="count*" read-only="true"/>
<!-- 对其他方法 使用默认的事务管理 -->
<tx:method name="*"/>
</tx:attributes>
</tx:advice>
<!-- 启用对事务注解的支持 -->
<tx:annotation-driven transaction-manager="transactionManager" />
<!-- 配置多个数据源 -->
<bean id="dataSource2" class="com.alibaba.druid.pool.DruidDataSource"
init-method="init" destroy-method="close">
<!-- 基本属性 url、user、password -->
<property name="url" value="${jdbc.url_2}" />
<property name="username" value="${jdbc.username_2}" />
<property name="password" value="${jdbc.password_2}" />
<!-- 配置初始化大小、最小、最大 -->
<property name="initialSize" value="${ds.initialSize}" />
<property name="minIdle" value="${ds.minIdle}" />
<property name="maxActive" value="${ds.maxActive}" />
<!-- 配置获取连接等待超时的时间 -->
<property name="maxWait" value="${ds.maxWait}" />
<!-- 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="${ds.timeBetweenEvictionRunsMillis}" />
<!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->
<property name="minEvictableIdleTimeMillis" value="${ds.minEvictableIdleTimeMillis}" />
</bean>
<!-- 配置sqlSessionFactory -->
<bean id="sqlSessionFactory2" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="configLocation" value="classpath:mybatis-config-2.xml" />
<property name="dataSource" ref="dataSource2" />
<property name="mapperLocations" value="classpath:com/ln/web/db2/dao/*.xml"></property>
</bean>
<!-- 对dataSource 数据源进行事务管理 -->
<bean id="transactionManager2"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource2"></property>
</bean>
<!-- 事务管理 通知 -->
<tx:advice id="txAdvice2" transaction-manager="transactionManager2">
<tx:attributes>
<!-- 对insert,update,delete 开头的方法进行事务管理,只要有异常就回滚 -->
<tx:method name="insert*" propagation="REQUIRED" rollback-for="java.lang.Throwable"/>
<tx:method name="update*" propagation="REQUIRED" rollback-for="java.lang.Throwable"/>
<tx:method name="delete*" propagation="REQUIRED" rollback-for="java.lang.Throwable"/>
<!-- select,count开头的方法,开启只读,提高数据库访问性能 -->
<tx:method name="select*" read-only="true"/>
<tx:method name="count*" read-only="true"/>
<!-- 对其他方法 使用默认的事务管理 -->
<tx:method name="*"/>
</tx:attributes>
</tx:advice>
<!-- 事务 aop 配置 -->
<aop:config>
<aop:pointcut id="serviceMethods" expression="execution(* com.simple.web.service..*(..))"/>
<aop:advisor advice-ref="txAdvice" pointcut-ref="serviceMethods"/>
<aop:advisor advice-ref="txAdvice2" pointcut-ref="serviceMethods"/>
</aop:config>
<!-- 启用对事务注解的支持 -->
<tx:annotation-driven transaction-manager="transactionManager2" />
<!-- 扫描mapper接口 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.ln.web.db2.dao"></property>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory2"></property>
</bean>
</beans>
2.mybatis配置文件：
mybatis-config.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"classpath:schema/mybatis-3-config.dtd">
<configuration>
<typeAliases>
<package name="com.ln.web.model"/>
</typeAliases>
</configuration>
mybatis-config-2.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"classpath:schema/mybatis-3-config.dtd">
<configuration>
<typeAliases>
<package name="com.ln.web.db2.model"/>
</typeAliases>
</configuration>
3.目录结构
