springboot项目如何配置多数据源

spring:
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    one:
      driver-class-name: com.mysql.cj.jdbc.Driver
      url: jdbc:mysql://localhost:3306/db1?useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai
      username: xxs
      password: 123456
    two:
      driver-class-name: com.mysql.cj.jdbc.Driver
      url: jdbc:mysql://localhost:3306/db2?useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai
      username: xxs
      password: 123456

@Configuration
@MapperScan(basePackages = "com.xxs.mapper.db1", sqlSessionFactoryRef = "db1SqlSessionFactory")
public class DataSourceOneConfig {

    @Bean(name = "db1DataSource")
    @ConfigurationProperties(prefix = "spring.datasource.one")
    public DataSource db1DataSource() {
        return DataSourceBuilder.create().build();
    }

    @Bean(name = "db1SqlSessionFactory")
    public SqlSessionFactory db1SqlSessionFactory(@Qualifier("db1DataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
        sessionFactory.setDataSource(dataSource);
        sessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:mapper/db1/*.xml"));
        return sessionFactory.getObject();
    }
}

@Configuration
@MapperScan(basePackages = "com.xxs.mapper.db2", sqlSessionFactoryRef = "db2SqlSessionFactory")
public class DataSourceTwoConfig {

    @Bean(name = "db2DataSource")
    @ConfigurationProperties(prefix = "spring.datasource.two")
    public DataSource db2DataSource() {
        return DataSourceBuilder.create().build();
    }

    @Bean(name = "db2SqlSessionFactory")
    public SqlSessionFactory db2SqlSessionFactory(@Qualifier("db2DataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
        sessionFactory.setDataSource(dataSource);
        sessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:mapper/db2/*.xml"));
        return sessionFactory.getObject();
    }
}

@Bean(name = "db1TransactionManager")
public DataSourceTransactionManager db1TransactionManager(@Qualifier("db1DataSource") DataSource dataSource) {
    return new DataSourceTransactionManager(dataSource);
}

@Bean(name = "db2TransactionManager")
public DataSourceTransactionManager db2TransactionManager(@Qualifier("db2DataSource") DataSource dataSource) {
    return new DataSourceTransactionManager(dataSource);
}