/**
 * xxx数据库
 *
 * @author xxx
 * @since 2023/04/19
 */
@Configuration
@MapperScan(basePackages = {"com.xxx.xxx.mapper.xxx"}, sqlSessionFactoryRef = "xxxSqlSessionFactory")
public class DataSourceXxxConfig {
    /**
     * DataSource
     *
     * @return DataSource
     */
    @Primary
    @Bean(name = "xxxDataSource")
    @ConfigurationProperties("spring.datasource.xxx")
    public DataSource dataSource() {
        return new DruidDataSource();
    }

    /**
     * SqlSessionFactory
     *
     * @param dataSource dataSource
     * @return SqlSessionFactory
     * @throws Exception Exception
     */
    @Primary
    @Bean(name = "xxxSqlSessionFactory")
    public SqlSessionFactory sqlSessionFactory(@Qualifier("xxxDataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean sessionFactoryBean = new SqlSessionFactoryBean();
        sessionFactoryBean.setDataSource(dataSource);
        sessionFactoryBean.setMapperLocations(new PathMatchingResourcePatternResolver()
            .getResources("classpath:mapper/xxx/*.xml"));
        return sessionFactoryBean.getObject();
    }

    /**
     * DataSourceTransactionManager
     *
     * @param dataSource dataSource
     * @return DataSourceTransactionManager
     */
    @Primary
    @Bean(name = "xxxTransactionManager")
    public DataSourceTransactionManager transactionManager(@Qualifier("xxxDataSource") DataSource dataSource) {
        return new DataSourceTransactionManager(dataSource);
    }

    /**
     * SqlSessionTemplate
     *
     * @param sqlSessionFactory sqlSessionFactory
     * @return SqlSessionTemplate
     * @throws Exception Exception
     */
    @Primary
    @Bean(name = "xxxSqlSessionTemplate")
    public SqlSessionTemplate sqlSessionTemplate(@Qualifier("xxxSqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
        return new SqlSessionTemplate(sqlSessionFactory);
    }
}

注意：使用mybatisplus时，SqlSessionFactory要改为MybatisSqlSessionFactoryBean。