ssm 配置多个数据源

 <?xml version="1.0" encoding="UTF-8"?>
 <beans  xmlns="http://www.springframework.org/schema/beans"
     xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
     xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:aop="http://www.springframework.org/schema/aop"
     xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://www.springframework.org/schema/beans
     http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
     http://www.springframework.org/schema/context
     http://www.springframework.org/schema/context/spring-context.xsd
     http://www.springframework.org/schema/mvc
     http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
     http://www.springframework.org/schema/aop
     http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
     http://www.springframework.org/schema/tx
     http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">

     <!-- 加载jdbc.properties文件   -->
     <bean id="propertyConfigurer"
         class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
         <property name="locations">
             <list>
                 <value>classpath*:config/datasource.properties</value>
             </list>
         </property>
     </bean>

     <!-- 配置DataSource数据源 -->
 <!--      <bean id="dataSource"  -->
 <!--          class="org.springframework.jdbc.datasource.DriverManagerDataSource">  -->
 <!--          <property name="driverClassName" value="${driver}" />  -->
 <!--          <property name="url" value="${url}" />  -->
 <!--          <property name="username" value="${username}" />  -->
 <!--          <property name="password" value="${password}" />  -->
 <!--      </bean>  -->

     <!-- JNDI连接池配置(jboss:java:/socket  tomcat : java:comp/env/jdbc/socket)-->
     <bean id="dataSource" class="org.springframework.jndi.JndiObjectFactoryBean">
         <property name="jndiName">
             <value>java:comp/env/jdbc/socket</value>
         </property>
     </bean>

     <!-- 配置Mybatis SqlSessionFactoryBean -->
     <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
         <property name="dataSource" ref="dataSource" />
         <property name="configLocation" value="classpath:config/mybatis.xml" />
         <!-- mapper和resultmap配置路径 -->
         <property name="mapperLocations">
             <list>
                 <!-- 表示在com/smart/包或以下所有目录中，以_sql.xml结尾所有文件 -->
                 <value>classpath*:com/bd/**/*_sql.xml</value>
             </list>
         </property>
     </bean>

     <!-- 框架 -->
     <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
         <constructor-arg index="0" ref="sqlSessionFactory" />
     </bean>

     <bean id="dataSourceHr" class="org.springframework.jndi.JndiObjectFactoryBean">
         <property name="jndiName">
             <value>java:comp/env/jdbc/hr</value>
         </property>
     </bean>

     <!-- 配置Mybatis SqlSessionFactoryBean -->
     <bean id="sqlSessionFactoryHr" class="org.mybatis.spring.SqlSessionFactoryBean">
         <property name="dataSource" ref="dataSourceHr" />
         <property name="configLocation" value="classpath:config/mybatis.xml" />
         <!-- mapper和resultmap配置路径 -->
         <property name="mapperLocations">
             <list>
                 <!-- 表示在com/smart/包或以下所有目录中，以_sql.xml结尾所有文件 -->
                 <value>classpath*:com/bd/**/*_sql.xml</value>
             </list>
         </property>
     </bean>

     <!-- 框架 -->
     <bean id="sqlSessionHr" class="org.mybatis.spring.SqlSessionTemplate">
         <constructor-arg index="0" ref="sqlSessionFactoryHr" />
     </bean>

     <bean id="batisDao" class="com.bd.core.base.dao.mybatis.BatisDaoImpl">
         <property name="sqlSession">
             <ref bean="sqlSession" />
         </property>
         <property name="sqlSessionHr">
             <ref bean="sqlSessionHr" />
         </property>
     </bean>

     <!--事务相关控制-->
     <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
           <property name="dataSource" ref="dataSource"></property>
     </bean>  

     <tx:advice id="txAdvice" transaction-manager="transactionManager">
         <tx:attributes>
             <tx:method name="get*" propagation="REQUIRED"
                 rollback-for="Exception,BusinessException" />
             <tx:method name="find*" propagation="REQUIRED"
                 rollback-for="Exception,BusinessException" />
             <tx:method name="query*" propagation="REQUIRED"
                 rollback-for="Exception,BusinessException" />
             <tx:method name="add*" propagation="REQUIRED" rollback-for="Exception,BusinessException" />
             <tx:method name="save*" propagation="REQUIRED"
                 rollback-for="Exception,BusinessException" />
             <tx:method name="update*" propagation="REQUIRED"
                 rollback-for="Exception,BusinessException" />
             <tx:method name="edit*" propagation="REQUIRED"
                 rollback-for="Exception,BusinessException" />
             <tx:method name="delete*" propagation="REQUIRED"
                 rollback-for="Exception,BusinessException" />
             <tx:method name="remove*" propagation="REQUIRED"
                 rollback-for="Exception,BusinessException" />
             <tx:method name="audit*" propagation="REQUIRED"
                 rollback-for="Exception,BusinessException" />
             <tx:method name="modify*" propagation="REQUIRED"
                 rollback-for="Exception,BusinessException" />
         </tx:attributes>
     </tx:advice>
     <aop:config>
         <aop:pointcut id="interceptorPointCuts"
             expression="execution(* com.bd.smart.*.*.service..*.*(..)) || execution(* com.bd.smart.*.service..*.*(..))" />
         <aop:advisor advice-ref="txAdvice" pointcut-ref="interceptorPointCuts" />
     </aop:config>

 </beans>

配置两个数据源和session工厂类和session对象，只需在dao的bean 中注入这些session对象，当调用的是哪个session 就会获取哪个数据库的连接。