SpringAOP中@within和@annotation的区别

@within和@annotation的区别：

 1.  @within 对象级别
 2.  @annotation 方法级别

例如:

@Slf4j
@Aspect
@RequiredArgsConstructor
public class SecurityInnerAspect implements Ordered {

	private final HttpServletRequest request;

	@SneakyThrows
	@Around("@within(inner) || @annotation(inner)")
	public Object around(ProceedingJoinPoint point, Inner inner) {
		// 实际注入的inner实体由表达式后一个注解决定，即是方法上的@Inner注解实体，若方法上无@Inner注解，则获取类上的
		if (inner == null) {
			Class<?> clazz = point.getTarget().getClass();
			inner = AnnotationUtils.findAnnotation(clazz, Inner.class);
		}
		String header = request.getHeader(SecurityConstants.FROM);
		if (inner.value() && !StrUtil.equals(SecurityConstants.FROM_IN, header)) {
			log.warn("访问接口 {} 没有权限", point.getSignature().getName());
			throw new AccessDeniedException("Access is denied");
		}
		return point.proceed();
	}

	@Override
	public int getOrder() {
		return Ordered.HIGHEST_PRECEDENCE + 1;
	}

}

//这个用于拦截标注在类上面的@RestController注解
@Around("@within(org.springframework.web.bind.annotation.RestController") 
       
// 这个用于拦截标注在方法上面的@RestController注解
@Around("@annotation(org.springframework.web.bind.annotation.RestController")