spring+mybatis怎么配置一个数据源，多个数据库

pring配置文件

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:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">

class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">

classpath:init-config.properties









init-method="init" destroy-method="close">



























value="20" />

















class="org.springframework.jdbc.datasource.DataSourceTransactionManager">














init-method="init" destroy-method="close">



























value="20" />















class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

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多数据源分享：不修改配置文件、不重启服务、动态切换数据源