spring+mybatis多数据源的配置

解决方案：

多套sqlSessionFactory，针对不同的数据源

数据源

<something-else-entirely>
<proxool>
<alias>peccancy</alias>
<driver-url>jdbc:oracle:thin:@172.16.60.46:1521:orcl</driver-url>
<driver-class>oracle.jdbc.driver.OracleDriver</driver-class>
<driver-properties>
<property name="user" value="oses"/>
<property name="password" value="oses"/>
</driver-properties>
...
</proxool>
<proxool>
<alias>yhtepap</alias>
<driver-url>jdbc:oracle:thin:@172.16.60.46:1521:orcl</driver-url>
<driver-class>oracle.jdbc.driver.OracleDriver</driver-class>
<driver-properties>
<property name="user" value="pap"/>
<property name="password" value="pap"/>
</driver-properties>
...
</proxool>
</something-else-entirely>

 1.方法一

<bean id="dataSource_peccancy" class="org.springframework.jdbc.datasource.DriverManagerDataSource" >
<property name="driverClassName">
<value>org.logicalcobwebs.proxool.ProxoolDriver</value>
</property>
<property name="url">
<value>proxool.peccancy</value>
</property>
</bean>
<bean id="dataSource_pap" class="org.springframework.jdbc.datasource.DriverManagerDataSource" >
<property name="driverClassName">
<value>org.logicalcobwebs.proxool.ProxoolDriver</value>
</property>
<property name="url">
<value>proxool.pap</value>
</property>
</bean>

<bean id="sqlSessionFactory_peccancy" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource_peccancy" />
<property name="mapperLocations">
<list>
<value>classpath:net/yhte/common/query/mapper/PageData_Mapper.xml</value>
<value>classpath*:net/yhte/web/peccancy/**/mapper/*Mapper.xml</value>
</list>
</property>
</bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="net.yhte.web.peccancy.**.dao" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory_peccancy"></property>
</bean>
<bean id="sqlSessionFactory_pap" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource_pap" />
<property name="mapperLocations">
<list>
<value>classpath*:net/yhte/web/pap/**/mapper/*Mapper.xml</value>
<value>classpath:net/yhte/common/query/mapper/PageData_Mapper.xml</value>
</list>
</property>
</bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="net.yhte.web.pap.**.dao" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory_pap"></property>
</bean>

 本方案需要根据数据源的不同对*Mapper.xml进行分包处理，便于配置，同一个包下的*Mapper.xml如果对应的数据源不同，则不方便使用通配符进行统一扫描配置，且sqlSessionFactory扫包的basePackage 也需要分包。

2.使用自定义注解来取代spring的repository设置到annotationClass中。这样每个mapper文件中注入相应的注解@PapRepository，@PeccancyRepository

<property name="annotationClass" value="org.springframework.stereotype.Repository"></property>

 改成<property name="annotationClass" value="net.xxx.PapRepository"></property>

  配置文件如下：

<bean id="sqlSessionFactory_peccancy" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource_peccancy" />
<property name="mapperLocations">
<list>
<value>classpath:net/yhte/common/query/mapper/PageData_Mapper.xml</value>
<value>classpath*:net/yhte/web/**/mapper/*Mapper.xml</value>
</list>
</property>
</bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="annotationClass" value="net.yhte.common.service.PeccancyRepository"></property>
<property name="basePackage" value="net.yhte.web.**.dao" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory_peccancy"></property>
</bean>
<bean id="sqlSessionFactory_pap" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource_pap" />
<property name="mapperLocations">
<list>
<value>classpath:net/yhte/common/query/mapper/PageData_Mapper.xml</value>
<value>classpath*:net/yhte/web/**/mapper/*Mapper.xml</value>
</list>
</property>
</bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="annotationClass" value="net.yhte.common.service.PapRepository"></property>
<property name="basePackage" value="net.yhte.web.**.dao" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory_pap"></property>
</bean>

 如上所配置使用pap的mapper文件就加上注解@PapRepository

public @interface PeccancyRepository {

}

public @interface PapRepository {

}

// 使用dataSource_pap 数据源
@PapRepository
public interface UserMapper {
List<User> find(UserQueryBean userQueryBean);
}
// 使用dataSource_peccancy 数据源
@PeccancyRepository
public interface ParameterMapper{

List<Parameter> find(ParameterQueryBean queryBean);
}