基于springboot配置多数据源-------分包形式

史上最简单的多数据源(通过分包)

注意目录对应:

/**
 * @author beidouxing
 * @create 2020/05/19 13:30
 */
@Configuration
@MapperScan(basePackages = DataSourceBigcustomerConfig.PACKAGE,sqlSessionTemplateRef = "bigcustomerSqlSessionTemplate")
public class DataSourceBigcustomerConfig {
    /**
     * 对应的bigcustomer 的dao包
     */
    static final String PACKAGE = "org.springblade.mapper.mysql.bigcustomer";
    /**
     * 对应的bigcustomer 的mapper.xml文件
     */
    static final String MAPPER_LOCATION = "classpath:mybatis/mysql/bigcustomer/*.xml";
    @Value("${spring.datasource.bigcustomer.url}")
    private String url;
    @Value("${spring.datasource.bigcustomer.username}")
    private String user;
    @Value("${spring.datasource.bigcustomer.password}")
    private String password;
    @Value("${spring.datasource.bigcustomer.driver-class-name}")
    private String driverClass;

    /**
     * 配置bigcustomer数据源
     */
    @Bean("bigcustomerDataSource")
    public DataSource bigcustomerDataSource(){
        HikariDataSource dataSource = new HikariDataSource();
        dataSource.setJdbcUrl(url);
        dataSource.setUsername(user);
        dataSource.setPassword(password);
        dataSource.setDriverClassName(driverClass);
        return dataSource;
    }

    @Bean("bigcustomerSqlSessionFactory")
    public SqlSessionFactory bigcustomerSqlSessionFactory(@Qualifier("bigcustomerDataSource")DataSource dataSource) throws Exception {
        SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
        sqlSessionFactoryBean.setDataSource(dataSource);
        sqlSessionFactoryBean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources(DataSourceBigcustomerConfig.MAPPER_LOCATION));
        return sqlSessionFactoryBean.getObject();
    }

    /**
     * 事务管理器
     * @param dataSource
     * @return
     */
    @Bean("bigcustomerTransactionManager")
    public DataSourceTransactionManager bigcustomerTransactionManager(@Qualifier("bigcustomerDataSource")DataSource dataSource){
        return new DataSourceTransactionManager(dataSource);
    }

    @Bean("bigcustomerSqlSessionTemplate")
    public SqlSessionTemplate bigcustomerSqlSessionTemplate(@Qualifier("bigcustomerSqlSessionFactory") SqlSessionFactory sqlSessionFactory){
        return new SqlSessionTemplate(sqlSessionFactory);
    }
}

你说这样写它能不香么
然后就是将对应的mapper文件放到对应的路径下,将对应的mapper.xml放到对应的路径下,就ok了

切记:
	这个可是要在springboot2.0版本以上才行哦!!!!!
	想配几个数据源就照这模样再来几个