反射似乎比Spring快得多。找到了解决这一差异的特性请求:http://www.opensaga.org/jira/browse/OS-738

这就是为什么在开发过程中使用reflection作为应用程序的启动时间是非常重要的。对于我的用例来说，Reflections似乎也很容易使用(找到一个接口的所有实现者)。

You can find classes with any given annotation with ClassGraph, as well as searching for other criteria of interest, e.g. classes that implement a given interface. (Disclaimer, I am the author of ClassGraph.) ClassGraph can build an abstract representation of the entire class graph (all classes, annotations, methods, method parameters, and fields) in memory, for all classes on the classpath, or for classes in whitelisted packages, and you can query that class graph however you want. ClassGraph supports more classpath specification mechanisms and classloaders than any other scanner, and also works seamlessly with the new JPMS module system, so if you base your code on ClassGraph, your code will be maximally portable. See the API here.

谷歌反射，如果你也想发现接口。

Spring ClassPathScanningCandidateComponentProvider没有发现接口。

使用org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider

API

从基本包扫描类路径的组件提供程序。然后，它对结果类应用排除和包括过滤器来查找候选类。

ClassPathScanningCandidateComponentProvider scanner =
new ClassPathScanningCandidateComponentProvider(<DO_YOU_WANT_TO_USE_DEFALT_FILTER>);

scanner.addIncludeFilter(new AnnotationTypeFilter(<TYPE_YOUR_ANNOTATION_HERE>.class));

for (BeanDefinition bd : scanner.findCandidateComponents(<TYPE_YOUR_BASE_PACKAGE_HERE>))
    System.out.println(bd.getBeanClassName());

在Spring中，您还可以使用AnnotationUtils类编写以下代码。例如:

Class<?> clazz = AnnotationUtils.findAnnotationDeclaringClass(Target.class, null);

要了解更多细节和所有不同的方法，请查看官方文档: https://docs.spring.io/spring/docs/current/javadoc-api/org/springframework/core/annotation/AnnotationUtils.html

如果你想要一个真正轻量级(没有依赖，简单的API, 15 kb的jar文件)和非常快速的解决方案，可以看看https://github.com/rmuller/infomas-asl上的注释检测器

声明:我是作者。