SpringAOP切面日志

概念

• 切入点（Pointcut）
• 切面（Aspect）
• 连接点（JoinPoint）
• 目标（Target）
• 织入（Weaving）

几种增强器（Advice）

• Before           前置
• After            后置
• AfterReturning     正常返回
• AfterThrowing      异常
• Aroud            环绕

@Component
@Aspect
public class WebLogAspect {

    private static final Logger logger = LoggerFactory.getLogger(WebLogAspect.class);

    @Pointcut("execution(* com.ritu.controller.*.*(..))")
    public void webLog() { }

    @Before("webLog()")
    public void doBefore(JoinPoint joinPoint) {
        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = attributes.getRequest();
        logger.info("URL:{}",request.getRequestURL().toString());
        logger.info("HTTP_METHOD:{}",request.getMethod());
        logger.info("IP:{}",request.getRemoteAddr());
        logger.info("CLASS_METHOD:{}", joinPoint.getSignature().getDeclaringTypeName() + "." + joinPoint.getSignature().getName());
        logger.info("ARGS:{}", Arrays.toString(joinPoint.getArgs()));
    }

    @After("webLog()")
    public void doAfter() {
        logger.info("POSTPROCESSOR EXCUTED");

    }
    @AfterReturning(pointcut = "webLog()",returning = "result")
    public void doAfterReturning(Object result) {
        logger.info("RESPONSE:{}",result.toString());
    }
    @AfterThrowing(pointcut = "webLog()",throwing = "exception")
    public void doAfterThrowing(Exception exception) {
        logger.error("EXCEPTION:{}",exception);
    }

    @Around("webLog()")
    public Object doAround(ProceedingJoinPoint proceedingJoinPoint) throws Throwable {
        long start = System.currentTimeMillis();
        Object proceed = proceedingJoinPoint.proceed();
        long end = System.currentTimeMillis();
        logger.info("METHOD EXCUTED TIME:{}ms",end-start);
        return proceed;
    }
}