基于 Spring + Atomikos + Mybatis的多数据源配置demo

1.spring配置文件

<?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:p="http://www.springframework.org/schema/p"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
                        http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
                        http://www.springframework.org/schema/context
                        http://www.springframework.org/schema/context/spring-context-3.1.xsd
                        http://www.springframework.org/schema/tx
                        http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
                        http://www.springframework.org/schema/mvc
                        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
    <!-- 自动扫描 -->
    <context:component-scan base-package="com.cn" />
    <!-- 引入配置文件 -->
    <!--<bean id="propertyConfigurer"
          class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="location" value="classpath:jdbc.properties" />
    </bean>-->

    <bean id="dataSourceOracle" class="com.atomikos.jdbc.AtomikosDataSourceBean"
          init-method="init" destroy-method="close">
        <property name="uniqueResourceName" value="oracle_ds" />
        <property name="xaDataSourceClassName"
                  value="oracle.jdbc.xa.client.OracleXADataSource" />
        <property name="xaProperties">
            <props>
                <prop key="URL">jdbc:oracle:thin:@192.168.222.1:1521:orcl</prop>
                <prop key="user">scott</prop>
                <prop key="password">orcl</prop>
            </props>
        </property>
        <property name="minPoolSize" value="10" />
        <property name="maxPoolSize" value="100" />
        <property name="borrowConnectionTimeout" value="30" />
        <property name="maintenanceInterval" value="60" />
    </bean>

    <bean id="dataSourceMysql" class="com.atomikos.jdbc.AtomikosDataSourceBean"
          init-method="init" destroy-method="close">
        <property name="uniqueResourceName" value="mysql_ds" />
        <property name="xaDataSourceClassName"
                  value="com.mysql.jdbc.jdbc2.optional.MysqlXADataSource" />
        <property name="xaProperties">
            <props>
                <prop key="url">jdbc:mysql://localhost:3306/test</prop>
                <prop key="user">root</prop>
                <prop key="password"></prop>
            </props>
        </property>
        <property name="minPoolSize" value="10" />
        <property name="maxPoolSize" value="100" />
        <property name="borrowConnectionTimeout" value="30" />
        <property name="maintenanceInterval" value="60" />
    </bean>

    <bean id="sqlSessionFactoryOracle" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSourceOracle" />
        <!-- 自动扫描mapping.xml文件 -->
        <property name="mapperLocations">
            <array>
                <value>classpath:com/cn/dao/dept/DeptDaoMapper.xml</value>
            </array>
        </property>
    </bean>
    <bean id="sqlSessionFactoryMysql" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSourceMysql" />
        <!-- 自动扫描mapping.xml文件 -->
        <property name="mapperLocations">
            <array>
                <value>classpath:com/cn/dao/brand/BrandDaoMapper.xml</value>
            </array>
        </property>
    </bean>

    <!--去dao层扫描对应的接口，接口上边要添加MapperScan注解-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.cn.dao.dept" />
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactoryOracle"></property>
    </bean>
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.cn.dao.brand" />
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactoryMysql"></property>
    </bean>

    <!-- atomikos事务管理器 -->
    <bean id="atomikosTransactionManager" class="com.atomikos.icatch.jta.UserTransactionManager"
          init-method="init" destroy-method="close">
        <description>UserTransactionManager</description>
        <property name="forceShutdown">
            <value>true</value>
        </property>
    </bean>

    <bean id="atomikosUserTransaction" class="com.atomikos.icatch.jta.UserTransactionImp">
        <property name="transactionTimeout" value="300" />
    </bean>

    <!-- spring 事务管理器 -->
    <bean id="transactionManager"
          class="org.springframework.transaction.jta.JtaTransactionManager">
        <property name="transactionManager" ref="atomikosTransactionManager"/>
        <property name="userTransaction" ref="atomikosUserTransaction" />
        <property name="allowCustomIsolationLevels" value="true"/>
    </bean>

    <!-- 使用annotation定义事务，对于要加入事物的类，只需对该类加 @Transactional  -->
    <tx:annotation-driven transaction-manager="transactionManager" />

    <!--<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
          destroy-method="close">
        <property name="driverClassName" value="${driverClassName}" />
        <property name="url" value="${url}" />
        <property name="username" value="${username}" />
        <property name="password" value="${password}" />
        &lt;!&ndash; 初始化连接大小 &ndash;&gt;
        <property name="initialSize" value="${initialSize}"></property>
        &lt;!&ndash; 连接池最大数量 &ndash;&gt;
        <property name="maxActive" value="${maxActive}"></property>
        &lt;!&ndash; 连接池最大空闲 &ndash;&gt;
        <property name="maxIdle" value="${maxIdle}"></property>
        &lt;!&ndash; 连接池最小空闲 &ndash;&gt;
        <property name="minIdle" value="${minIdle}"></property>
        &lt;!&ndash; 获取连接最大等待时间 &ndash;&gt;
        <property name="maxWait" value="${maxWait}"></property>
    </bean>-->

    <!-- 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="dataSource" />
        &lt;!&ndash;<property name="configLocation"  value="classpath:mybatis-config.xml"/>&ndash;&gt;
        &lt;!&ndash; 自动扫描mapping.xml文件 &ndash;&gt;
        <property name="mapperLocations" value="classpath:com/cn/**/*.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.cn.dao" />
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
    </bean>-->

    <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->
    <!--<bean id="transactionManager"
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    </bean>
-->
</beans>

2.项目结构

3.mybatis映射文件