方法1
@EnableAutoConfiguration(exclude = DataSourceAutoConfiguration.class)
public class MyConfiguration {}

@EnableAutoConfiguration(exclude = {DataSourceAutoConfiguration.class,XADataSourceAutoConfiguration.class})



方法2
@SpringBootApplication(exclude = DataSourceAutoConfiguration.class)
public class MyConfiguration { }


方法3 
spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration


启动日志里会显示禁用的自动配置类

Exclusions:
-----------
    com.dyyx.mystarter.configuration.MyStarter2AutoConfiguration



 spring-boot-starter原理   
 自定义springboot starter