package com.atguigu.config;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.ComponentScan;

import org.springframework.context.annotation.Configuration;

import org.springframework.context.annotation.FilterType;

import org.springframework.context.annotation.ComponentScan.Filter;

import org.springframework.context.annotation.ComponentScans;

import com.atguigu.bean.Person;

//配置类==配置文件

@Configuration  //告诉Spring这是一个配置类

@ComponentScans(

        value = {

                @ComponentScan(value="com.atguigu",includeFilters = {

/*                        @Filter(type=FilterType.ANNOTATION,classes={Controller.class}),

                        @Filter(type=FilterType.ASSIGNABLE_TYPE,classes={BookService.class}),*/

                        @Filter(type=FilterType.CUSTOM,classes={MyTypeFilter.class})

                },useDefaultFilters = false)

        }

        )

//@ComponentScan  value:指定要扫描的包

//excludeFilters = Filter[] ：指定扫描的时候按照什么规则排除那些组件

//includeFilters = Filter[] ：指定扫描的时候只需要包含哪些组件

//FilterType.ANNOTATION：按照注解

//FilterType.ASSIGNABLE_TYPE：按照给定的类型；

//FilterType.ASPECTJ：使用ASPECTJ表达式

//FilterType.REGEX：使用正则指定

//FilterType.CUSTOM：使用自定义规则

public class MainConfig {

    //给容器中注册一个Bean;类型为返回值的类型，id默认是用方法名作为id

    @Bean("person")

    public Person person01(){

        return new Person("lisi", 20);

    }

}

package com.atguigu;

import java.io.IOException;

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;

public class MyTypeFilter implements TypeFilter {

    public boolean match(MetadataReader metadataReader,

            MetadataReaderFactory metadataReaderFactory) throws IOException {

        //获取当前类的注解信息

        AnnotationMetadata annotationMetadata = metadataReader.getAnnotationMetadata();

        //获取当前类的类信息

        ClassMetadata classMetadata = metadataReader.getClassMetadata();

        System.out.println("------------->" + classMetadata.getClassName());

        //资源信息

        Resource resource = metadataReader.getResource();

        if(classMetadata.getClassName().contains("Controller")){

            return true;

        }

        return false;

    }

}