SpringBoot@CompentScanexcludeFilters配置无效的解决方案

目录

• @CompentScan excludeFilters配置无效
• FilterType
• @ComponentScan excludeFilters 自定义过滤器
• 一、@ComponentScan的作用
• 二、定义组件
• 三、在主程序类中测试
• 四、@ComponentScan中excludeFilters使用

@ComponentScan(
    basePackages = {"com.scio.core"},
    excludeFilters = {
      @Filter(type = FilterType.REGEX, pattern = "com.scio.core.B"),
      @Filter(type = FilterType.REGEX, pattern = "com.scio.core.message..*")
    })

package info.pigg.study.java.service;
import org.springframework.stereotype.Service;
@Service("myBeanService")
public class MyService {
}

package info.pigg.study.java.config;
@Configuration
public class MyConfig {
    @Bean(name = "myBeanPerson")
    public Person myBeanPerson(){
        return new Person("king", 31);
    }
    @Bean(name = "myBeanUser")
    public User myBeanUser(){
        return new User("king", 31);
    }
}

@SpringBootApplication
@ComponentScan(value = "info.pigg.study.java")
public class DictApplication {
    public static void main(String[] args) {
        ConfigurableApplicationContext run = SpringApplication.run(DictApplication.class, args);
        String[] names = run.getBeanDefinitionNames();
  
  //打印出名称包含myBean的实例
        for (String name : names) {
            if (name.contains("myBean")) {
                System.out.println(name);
            }
        }
    }
}

@SpringBootApplication
@ComponentScan(value = "info.pigg.study.java", excludeFilters = {
        @ComponentScan.Filter(type = FilterType.ASSIGNABLE_TYPE, classes = {MyService.class})})
public class DictApplication {
 //和上面一样，省略
}

@SpringBootApplication
@ComponentScan(value = "info.pigg.study.java", excludeFilters = {
        @ComponentScan.Filter(type = FilterType.ANNOTATION, classes = {Service.class})})
public class DictApplication {
}

@SpringBootApplication
@ComponentScan(value = "info.pigg.study.java", excludeFilters = {
        @ComponentScan.Filter(type = FilterType.CUSTOM, classes = {MyTypeFilter.class})})
public class DictApplication {
}

package info.pigg.study.java.filter;
import org.springframework.core.io.Resource;
import org.springframework.core.type.AnnotationMetadata;
import org.springframework.core.type.ClassMetadata;
import org.springframework.core.type.classreading.MetadataReader;
import org.springframework.core.type.classreading.MetadataReaderFactory;
import org.springframework.core.type.filter.TypeFilter;
import java.io.IOException;
public class MyTypeFilter implements TypeFilter {
    @Override
    public boolean match(MetadataReader metadataReader, MetadataReaderFactory metadataReaderFactory) throws IOException {
        //获取当前类注解的信息
        AnnotationMetadata annotatiOnMetadata= metadataReader.getAnnotationMetadata();
        
        //获取当前类资源(类的路径)
        Resource resource = metadataReader.getResource();
        ClassMetadata classMetadata = metadataReader.getClassMetadata();
        System.out.println("当前正在被扫描的类的类名" + classMetadata.getClassName());
        if (classMetadata.getClassName().contains("MyService")){
            return true;
        }
        return false;
    }
}