/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package thinking.in.spring.boot.samples.spring5.bootstrap;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.EnableAspectJAutoProxy;
import org.springframework.context.annotation.EnableMBeanExport;
import org.springframework.core.type.AnnotationMetadata;
import org.springframework.core.type.StandardAnnotationMetadata;
import org.springframework.util.ClassUtils;
import org.springframework.util.CollectionUtils;
import thinking.in.spring.boot.samples.spring5.annotation.TransactionalService;
import java.io.IOException;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Set;
import java.util.stream.Collectors;
/**
* {@link TransactionalService @TransactionalService} {@link StandardAnnotationMetadata}实现 引导类
*
* @author <a href="mailto:[email protected]">Mercy</a>
* @since 1.0.0
*/
@TransactionalService
public class TransactionalServiceStandardAnnotationMetadataBootstrap {
public static void main(String[] args) throws IOException {
// 读取 @TransactionService AnnotationMetadata 信息
AnnotationMetadata annotationMetadata = new StandardAnnotationMetadata(TransactionalServiceStandardAnnotationMetadataBootstrap.class);
// 获取所有的元注解类型（全类名）集合
Set<String> metaAnnotationTypes = annotationMetadata.getAnnotationTypes()
.stream() // TO Stream
.map(annotationMetadata::getMetaAnnotationTypes) // 读取单注解的元注解类型集合
.collect(LinkedHashSet::new, Set::addAll, Set::addAll); // 合并元注解类型（全类名）集合
metaAnnotationTypes.forEach(metaAnnotation -> { // 读取所有元注解类型
// 读取元注解属性信息
Map<String, Object> annotationAttributes = annotationMetadata.getAnnotationAttributes(metaAnnotation);
if (!CollectionUtils.isEmpty(annotationAttributes)) {
annotationAttributes.forEach((name, value) ->
System.out.printf("注解 @%s 属性 %s = %s\n", ClassUtils.getShortName(metaAnnotation), name, value));
}
});
}
}
