SpringBoot 切面AOP获取注解为null

public Object around(ProceedingJoinPoint joinPoint) throws Throwable {
        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        Method method = signature.getMethod();
        Method realMethod = joinPoint.getTarget().getClass().getDeclaredMethod(signature.getName(), method.getParameterTypes());
        XxxxAnnotation xxxxAnnotation= realMethod.getDeclaredAnnotation(XxxxAnnotation.class);

解决方法：

• 直接用 method.getDeclaredAnnotation(XxxxAnnotation.class) 获取注解为null
• 需要用方法的代理原始目标类取获取注解 realMethod.getDeclaredAnnotation(XxxxAnnotation.class)

解决 getAnnotation为null的坑_field.getannotation为空-CSDN博客