@Configuration
@MapperScan(basePackages = "com.order.mapper", sqlSessionFactoryRef = "orderSqlSessionFactory")
public class OrderDataSourceConfig {

    /**
     * 将订单db注册到容器中
     *
     * @return
     */
    @Bean(name = "orderDataSource")
    @ConfigurationProperties(prefix = "spring.datasource.order")
    public DataSource orderDataSource() {
        return DataSourceBuilder.create().build();
    }

    /**
     * 将订单SqlSessionFactory注册到容器中
     *
     * @param dataSource
     * @return
     * @throws Exception
     */
    @Bean(name = "orderSqlSessionFactory")
    public SqlSessionFactory orderSqlSessionFactory(@Qualifier("orderDataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
        sqlSessionFactoryBean.setDataSource(orderDataSource());
        return sqlSessionFactoryBean.getObject();
    }

    /**
     * 创建订单管理器
     *
     * @param dataSource
     * @return
     */
    @Bean(name = "orderTransactionManager")
    public DataSourceTransactionManager orderTransactionManager(@Qualifier("orderDataSource") DataSource dataSource) {
        return new DataSourceTransactionManager(dataSource);
    }

    /**
     * 创建订单sqlSesion模版
     *
     * @param sqlSessionFactory
     * @return
     * @throws Exception
     */
    @Bean(name = "orderSqlSessionTemplate")
    public SqlSessionTemplate menberSqlSessionTemplate(
            @Qualifier("orderSqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
        return new SqlSessionTemplate(sqlSessionFactory);
    }


}

application.yml配置

spring:
  datasource:
    ###会员数据库
    member:
      jdbc-url: jdbc:mysql://localhost:3306/user
      username: root
      password: 
      driver-class-name: com.mysql.jdbc.Driver
    ###订单数据库
    order:
      jdbc-url: jdbc:mysql://localhost:3306/order
      username: root
      password: 
      driver-class-name: com.mysql.jdbc.Driver