利用AbstractRoutingDataSource实现动态数据源切换（Spring+Ibatis）

Spring+Ibatis 与 Spring+Hibernate的区别在于Ibatis和Hibernate的配置不同，下面来看下Ibatis的配置

 

<jee:jndi-lookup id="ds0" jndi-name="jdbc/ds0"/>
	<jee:jndi-lookup id="ds1" jndi-name="jdbc/ds1"/>
	<jee:jndi-lookup id="ds2" jndi-name="jdbc/ds2"/>
	<bean id="dataSource" class="com.xxx.xxx.util.DynamicDataSource"> 
		<property name="targetDataSources"> 
			<map key-type="java.lang.String"> 
				<entry key="1" value-ref="ds1"/> 
				<entry key="2" value-ref="ds2"/> 
			</map> 
		</property> 
		<property name="defaultTargetDataSource" ref="ds0"/> 
	</bean> 
	<!-- SqlMap setup for iBATIS Database Layer --> 
	<bean id="sqlMapClient" class="org.springframework.orm.ibatis.SqlMapClientFactoryBean"> 
		<property name="dataSource" ref="dataSource"/> 
		<property name="configLocation" value="classpath:com/xxx/xxx/dao/sqlmap/sql-map-config.xml"/>
	</bean> 

 

sql-map-config.xml 如下：

<?xml version="1.0" encoding="UTF-8" standalone="no"?> 
<!DOCTYPE sqlMapConfig PUBLIC "-//iBATIS.com//DTD SQL Map Config 2.0//EN" 
   	"http://www.ibatis.com/dtd/sql-map-config-2.dtd">  
   	<sqlMapConfig>      
   		<sqlMap resource="com/xxx/xxx/dao/sqlmap/Object.xml"/>  
   	</sqlMapConfig> 

 

核心是DynamicDataSource 与 上下文DynamicDataSourceHolder为一线程安全的ThreadLocal，都和上一篇文章的中对应的类相同。