spring的多数据源配置(spring+ibatis + oracle环境下)

电信的业务逻辑是复杂的，数据库的相互调用是不可避免。同一个应用项目中，可以调用DBLink来调用多个数据库，但一般只是配了一个数据源。

我的业务逻辑是这样的，有两个数据库，服务器端提供这两个数据库的webservice接口，前提是只做在一个java project。

OK! 那就是配置多个数据源了。搜索了一下，发现spring可以支持多个数据源。

有好几种方法，结合到我只需配置两个数据源，我选择了我认为最简单、最容易实现的方式。

下面就简单的介绍一下，我的那种方法。

即在spring的配置文件上，配置两个数据源、两个事务、两个事务拦截、两个ibatis的工厂数据源配置、两个ibatis的抽象Dao。代码如下：

<?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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd"> <!-- 数据源1 --> <bean id="dataSource1" class="org.apache.commons.dbcp.BasicDataSource"> <property name="driverClassName"> <value>oracle.jdbc.driver.OracleDriver</value> </property> <property name="url"> <value>jdbc:oracle:thin:@192.168.1.2:1522:test01</value> </property> <property name="username"> <value>user01</value> </property> <property name="password"> <value>psw01</value> </property> <property name="maxActive"> <value>100</value> </property> <property name="maxIdle"> <value>8</value> </property> <property name="minIdle"> <value>1</value> </property> </bean> <!-- 数据源2 --> <bean id="dataSource2" class="org.apache.commons.dbcp.BasicDataSource"> <property name="driverClassName"> <value>oracle.jdbc.driver.OracleDriver</value> </property> <property name="url"> <value>jdbc:oracle:thin:@192.169.1.3:1552:test02</value> </property> <property name="username"> <value>user02</value> </property> <property name="password"> <value>psw02</value> </property> <property name="maxActive"> <value>100</value> </property> <property name="maxIdle"> <value>8</value> </property> <property name="minIdle"> <value>1</value> </property> </bean> <!-- 事务1 --> <bean id="transactionManager1" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource2" /> </bean> <!-- 事务2 --> <bean id="transactionManager2" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource1" /> </bean> <!-- 事务拦截1 --> <bean id="transactionInterceptor1" class="org.springframework.transaction.interceptor.TransactionInterceptor"> <property name="transactionManager" ref="transactionManager1" /> <property name="transactionAttributes"> <props> <prop key="insert*">PROPAGATION_REQUIRED</prop> <prop key="delete*">PROPAGATION_REQUIRED</prop> <prop key="update*">PROPAGATION_REQUIRED</prop> <prop key="do*">PROPAGATION_REQUIRED</prop> </props> </property> </bean> <!-- 事务拦截2 --> <bean id="transactionInterceptor2" class="org.springframework.transaction.interceptor.TransactionInterceptor"> <property name="transactionManager" ref="transactionManager2" /> <property name="transactionAttributes"> <props> <prop key="insert*">PROPAGATION_REQUIRED</prop> <prop key="delete*">PROPAGATION_REQUIRED</prop> <prop key="update*">PROPAGATION_REQUIRED</prop> <prop key="do*">PROPAGATION_REQUIRED</prop> </props> </property> </bean> <!-- 管理你连接的地方--> <bean id="autoProxyCreator" class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator"> <property name="beanNames"> <value>*Service</value> </property> <property name="interceptorNames"> <list> <value>transactionInterceptor1</value> <value>transactionInterceptor2</value> </list> </property> </bean> <!-- ibatis的工厂数据源配置1 --> <bean id="sqlMapClient1" class="org.springframework.orm.ibatis.SqlMapClientFactoryBean"> <property name="configLocation" value="classpath:config/sql-map-config.xml" /><!--这里是ibatis的sqlMap文件集合 --> <property name="dataSource" ref="dataSource1" /> </bean> <!-- ibatis的工厂数据源配置2 --> <bean id="sqlMapClient2" class="org.springframework.orm.ibatis.SqlMapClientFactoryBean"> <property name="configLocation" value="classpath:config/sql-map-config.xml" /><!--这里是ibatis的sqlMap文件集合 --> <property name="dataSource" ref="dataSource2" /> </bean> <!-- ibatis抽象的Dao1 --> <bean id="baseIbatisDAO1" abstract="true"> <property name="sqlMapClient"> <ref local="sqlMapClient1" /> </property> </bean> <!-- ibatis抽象的Dao2 --> <bean id="baseIbatisDAO2" abstract="true"> <property name="sqlMapClient"> <ref local="sqlMapClient2" /> </property> </bean> </beans>

剩下的就是spring的DAO和 service层的调用和配置了。举个例子吧：

DAO层:

<pre class="html" name="code"> <bean id="userDAO" class="org.xxx.dao.impl.UserDAOImpl" parent="baseIbatisDAO1"> </bean> <bean id="deptDAO" class="org.xxx.dao.impl.DeptDAOImpl" parent="baseIbatisDAO2"> </bean></pre>

service层（业务层）:

<bean id="userService" class="org.xxx.service.impl.UserServiceImpl" parent="userDAO"> </bean> <bean id="deptService" class="org.xxx.service.impl.DeptServiceImpl" parent="deptDAO"> </bean> <pre class="html" name="code">呵呵。。。简单吧！愿能帮助到遇到类似问题的你。。。</pre>