SpringBoot中@ComponentScan注解过滤排除不加载某个类的3种方法

<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>
    <version>${slf4j.version}</version>
    <exclusions>
            <exclusion>
            <artifactId>slf4j-api</artifactId>
            <groupId>org.slf4j</groupId>
            </exclusion>
    </exclusions>
    </dependency>

@ComponentScan(value = "com.xxx",excludeFilters = {
		@ComponentScan.Filter(type = FilterType.ASSIGNABLE_TYPE,classes = {
				com.xxx.xxx.xxx.class,
				com.xxx.xxx.xxx.class,
                ....
		})
})
@SpringBootApplication
public class StartApplication {
	public static ApplicationContext applicationContext = null;
	public static void main(String[] args) {
		applicationContext = SpringApplication.run(StartApplication.class, args);
	}
}

@ComponentScan(value = "com.xxx",excludeFilters = {
	@ComponentScan.Filter(type = FilterType.REGEX,pattern = {
            //以下写正则表达式，需要对目标类的完全限定名完全匹配，否则不生效
			"com.xxx.xxx.impl.service.+",
            ....
	})
})
@SpringBootApplication
public class StartApplication {
	public static ApplicationContext applicationContext = null;
	public static void main(String[] args) {
		applicationContext = SpringApplication.run(StartApplication.class, args);
	}
}