动态获取springboot启动类上的注解

package com.demo.other;

import com.dtflys.forest.annotation.ForestScan;
import com.dtflys.forest.scanner.ClassPathClientScanner;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.beans.factory.support.BeanNameGenerator;
import org.springframework.context.ResourceLoaderAware;
import org.springframework.context.annotation.ImportBeanDefinitionRegistrar;
import org.springframework.core.annotation.AnnotationAttributes;
import org.springframework.core.io.ResourceLoader;
import org.springframework.core.type.AnnotationMetadata;
import org.springframework.util.ClassUtils;
import org.springframework.util.StringUtils;

import java.util.ArrayList;
import java.util.List;


public class TestFlagC2 implements ImportBeanDefinitionRegistrar, ResourceLoaderAware {
    private ResourceLoader resourceLoader;

    public TestFlagC2() {
    }
   @Override
    public void setResourceLoader(ResourceLoader resourceLoader) {
        this.resourceLoader = resourceLoader;
    }
    @Override
    public void registerBeanDefinitions(AnnotationMetadata importingClassMetadata, BeanDefinitionRegistry registry) {
        AnnotationAttributes annoAttrs = AnnotationAttributes.fromMap(importingClassMetadata.getAnnotationAttributes(TestFlag2.class.getName()));
        List<String> basePackages = new ArrayList();
        String[] var5 = annoAttrs.getStringArray("value");
        System.out.println("values.len="+var5.length);
        for (String s :var5) {
            System.out.println("values=" + s);
        }
        int var6 = var5.length;

        int var7;
        String pkg;
        for(var7 = 0; var7 < var6; ++var7) {
            pkg = var5[var7];
            if (StringUtils.hasText(pkg)) {
                basePackages.add(pkg);
            }
        }

        var5 = annoAttrs.getStringArray("basePackages");
        var6 = var5.length;

        for(var7 = 0; var7 < var6; ++var7) {
            pkg = var5[var7];
            if (StringUtils.hasText(pkg)) {
                basePackages.add(pkg);
            }
        }

        Class[] var9 = annoAttrs.getClassArray("basePackageClasses");
        var6 = var9.length;

        for(var7 = 0; var7 < var6; ++var7) {
            Class<?> clazz = var9[var7];
            basePackages.add(ClassUtils.getPackageName(clazz));
        }

        String configurationId = annoAttrs.getString("configuration");
        ClassPathClientScanner scanner = new ClassPathClientScanner(configurationId, registry);
        if (this.resourceLoader != null) {
            scanner.setResourceLoader(this.resourceLoader);
        }

        scanner.registerFilters();
        scanner.doScan(StringUtils.toStringArray(basePackages));
    }
    public void  say(){
        System.out.println("this is TestFlagC2.say22222");
    }
}

package com.demo.other;

import org.springframework.context.annotation.Import;

import java.lang.annotation.*;

@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.TYPE})
@Documented
@Import({TestFlagC2.class})
public @interface TestFlag2 {
    String[] value() default {};
}

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