通过Reflections获取注解内容

简介

前段时间做接口权限管理，需要扫描项目内所有用到权限注解的方法，并获取注解里的内容。上网查阅资料后发现通过Reflections可以满足需求。

pom依赖

   <dependency>
       <groupId>org.reflections</groupId>
       <artifactId>reflections</artifactId>
       <version>0.9.10</version>
   </dependency>

具体实现

	ConfigurationBuilder config = new ConfigurationBuilder();
    config.filterInputsBy(new FilterBuilder().includePackage("com···controller.admin"));
    config.addUrls(ClasspathHelper.forPackage("com···controller.admin"));
    config.setScanners(new MethodAnnotationsScanner());

    Reflections reflections = new Reflections(config);
    Set<Method> methodsAnnotatedWith = reflections.getMethodsAnnotatedWith(PreAuthorize.class);

    for (Method method : methodsAnnotatedWith) {
        PreAuthorize annotation = method.getAnnotation(PreAuthorize.class);
        String value = StringUtils.substringBetween(annotation.value(), "'", "'");
    }