@ComponentScan 排除多个包

可以通过自定义注解来实现在@ComponentScan中排除多个包。具体步骤如下：

1. 创建一个自定义注解，例如@ExcludeScan，用于标记需要排除的包。

import java.lang.annotation.*;

@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
public @interface ExcludeScan {
    String[] value();
}

2. 在需要排除的包上添加@ExcludeScan注解，并指定需要排除的包名。

@ExcludeScan({"com.example.package1", "com.example.package2"})
@SpringBootApplication
public class MyApplication {
    public static void main(String[] args) {
        SpringApplication.run(MyApplication.class, args);
    }
}

3. 创建一个自定义的@ComponentScan注解，用于扫描除了被@ExcludeScan标记的包之外的其他包。

import org.springframework.context.annotation.ComponentScan;
import org.springframework.core.annotation.AliasFor;

import java.lang.annotation.*;

@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
@ComponentScan
public @interface CustomComponentScan {
    @AliasFor(annotation = ComponentScan.class, attribute = "value")
    String[] value() default {};

    @AliasFor(annotation = ComponentScan.class, attribute = "basePackages")
    String[] basePackages() default {};

    @AliasFor(annotation = ComponentScan.class, attribute = "basePackageClasses")
    Class<?>[] basePackageClasses() default {};

    @AliasFor(annotation = ComponentScan.class, attribute = "excludeFilters")
    ComponentScan.Filter[] excludeFilters() default {};

    @AliasFor(annotation = ComponentScan.class, attribute = "includeFilters")
    ComponentScan.Filter[] includeFilters() default {};

    @AliasFor(annotation = ComponentScan.class, attribute = "useDefaultFilters")
    boolean useDefaultFilters() default true;
}

4. 在需要扫描的类上使用@CustomComponentScan注解，并指定需要扫描的包。

@CustomComponentScan("com.example")
@SpringBootApplication
public class MyApplication {
    public static void main(String[] args) {
        SpringApplication.run(MyApplication.class, args);
    }
}

通过以上步骤，可以实现在@ComponentScan中排除多个包。