@SpringBootApplication的exclude 专门用来排除auto-configuration 也就是我们说的自动配置的类的。例如：

@SpringBootApplication(exclude = KafkaAutoConfiguration.class)

如果在@SpringBootApplication排除非自动配置类，会报错

用@SpringBootApplication(exclude = RibbonRule.class)排除类@bean注入的类的时候报错

The following classes could not be excluded because they are not auto-configuration classes.....

如果想要排除我们自定义的@Bean,可以用

@ComponentScan(excludeFilters= {@ComponentScan.Filter(type=FilterType.ASSIGNABLE_TYPE, value= {RedisUtil.class})})

指定包的扫描范围：

@ComponentScan(basePackages = {"com.test"},
        excludeFilters={@ComponentScan.Filter(type= FilterType.ASSIGNABLE_TYPE,
                value= {org.xxx.core.common.xxl.XXLConfig.class
        })})