java springboot Reflections工具扫描项目中带有某个注解的方法（类似@SpringBootApplication扫描各种注解）

简单示范

// 要扫描的包路径
String[] scanPackages = new String[]{"cn.humorchen.delaytask"};
// 创建过滤器
FilterBuilder filterBuilder = new FilterBuilder();
for (String scanPackage : scanPackages) {
	// 添加要扫描的包路径
    filterBuilder.includePackage(scanPackage);
}
// 创建扫描配置
Configuration configuration = new ConfigurationBuilder().forPackages(scanPackages).filterInputsBy(filterBuilder)
        .setScanners(Scanners.MethodsAnnotated);
// 使用Reflections  进行扫描
Reflections reflections = new Reflections(configuration);
// 获得加了DelayTask注解的方法
Set<Method> methodsAnnotatedWithDelayTask = reflections.getMethodsAnnotatedWith(DelayTask.class);

@EnableDistributeDelayTask配置路径扫描示范（类似于@SpringBootApplication）

 public void scanProjectTask() {
        // 状态切换CAS
        if (INIT.compareAndSet(false, true)) {
            // 要扫描的包路径
            HashSet<String> scanPackageSet = new HashSet<>();
            // 通过上下文拿加了启用注解的Bean
            Map<String, Object> beansWithAnnotation = applicationContext.getBeansWithAnnotation(EnableDistributeDelayTask.class);
            for (Object bean : beansWithAnnotation.values()) {
                // 获取注解
                EnableDistributeDelayTask enableDistributeDelayTask = AnnotationUtil.getAnnotation(bean.getClass(), EnableDistributeDelayTask.class);
                // 将注解中配置的扫描路径加入集合
                if (enableDistributeDelayTask != null && enableDistributeDelayTask.scanPackages() != null && enableDistributeDelayTask.scanPackages().length > 0) {
                    scanPackageSet.addAll(Arrays.asList(enableDistributeDelayTask.scanPackages()));
                }
                // 将bean当前路径加入集合
                scanPackageSet.add(bean.getClass().getPackage().getName());
            }
            String[] scanPackages = scanPackageSet.toArray(new String[0]);
            // 构建过滤器构造器
            FilterBuilder filterBuilder = new FilterBuilder();
            for (String scanPackage : scanPackages) {
                // 将每个包加入其中
                filterBuilder.includePackage(scanPackage);
            }
            // 构建配置
            Configuration configuration = new ConfigurationBuilder().forPackages(scanPackages).filterInputsBy(filterBuilder)
                    .setScanners(Scanners.MethodsAnnotated);
            // 创建反射工具对象Reflections
            Reflections reflections = new Reflections(configuration);
            //扫描所有加了注解的方法
            Set<Method> methodsAnnotatedWithDelayTask = reflections.getMethodsAnnotatedWith(DelayTask.class);
            // 遍历这些方法
            for (Method method : methodsAnnotatedWithDelayTask) {
                // 拿到注解
                DelayTask delayTaskAnnotation = AnnotationUtil.getAnnotation(method, DelayTask.class);
                if (delayTaskAnnotation != null) {
                    // 执行加载逻辑
                    String taskName = delayTaskAnnotation.value();
                    checkTaskMethodArgsAndReturnType(taskName, method);
                    checkTaskNameConflict(taskName, method);
                    taskNameSet.add(taskName);
                    methodMap.put(taskName, method);
                    annotationMap.put(taskName, delayTaskAnnotation);
                }
            }
        } else {
            log.warn("【DistributeDelayTask】 DistributeDelayTaskServiceImpl has been initialized, skip scanProjectTask");
        }
    }

AnnotationUtil 见博客
https://humorchen.blog.csdn.net/article/details/139798211