Java 使用切面如何获取当前类或者方法?
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2022-03-11 22:53:25
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@Pointcut("execution(* com.sss.testtest.controller..*.*(..))")
public void pointcut() {
}
@Around("pointcut()")
public Object around(ProceedingJoinPoint point) throws Throwable {
ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
HttpServletRequest request = attributes.getRequest();
MethodSignature methodSignature = (MethodSignature) point.getSignature();
Method method = methodSignature.getMethod();
String uri = request.getRequestURI();
String logInfo = "请求uri=" + uri;
logger.debug(logInfo);
}
如上:
(1)可以通过,如下代码获取当前请求,获取到当前请求以后,我们可以获取到当前请求的参数等信息。比如说请求的uri
ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
HttpServletRequest request = attributes.getRequest();
获取请求中的uri:
String uri = request.getRequestURI();
(2)获取当前类的方式:通过反射拿到当前类。
Class clazz = point.getTarget().getClass();
(3)获取当前方法:
MethodSignature methodSignature = (MethodSignature) point.getSignature();
Method method = methodSignature.getMethod();
扩展:
假设我自定义了一个注解@MenCodeChecker(作用于类上面)。现在我想,通过注解拿到我想要的信息。那么需要先通过反射拿到当前类,然后才能获取到相关的信息:
MenCodeChecker checker = (MenCodeChecker) clazz.getDeclaredAnnotation(MenCodeChecker.class);
其中clazz就是(2)中拿到的当前类
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