java扫描包内指定注解的类

需求：扫描指定注解标记的类，进行输出等处理

引入依赖

<dependency>
    <groupId>org.reflections</groupId>
    <artifactId>reflections</artifactId>
    <version>0.9.11</version>
</dependency>

扫描指定注解ProcesserAnnotation标记的类

String packageName="org.test";
//反射
Reflections ref = new Reflections(packageName);
// 获取扫描到的标记注解的集合
Set<Class<?>> set = ref.getTypesAnnotatedWith(ProcesserAnnotation.class);
System.out.println("--------start-------------");
List<MutablePair<Processer,ProcesserAnnotation>> pairList=new ArrayList<>();
for (Class<?> c : set) {
    // 循环获取标记的注解
    ProcesserAnnotation annotation = c.getAnnotation(ProcesserAnnotation.class);
    if(annotation!=null){
        // 打印注解中的内容
        System.out.println(String.format("处理器名：%s，分组：%s",annotation.value(),annotation.group()));
        try {
            pairList.add(new MutablePair<>((Processer) c.newInstance(),annotation));
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
}