aop 面向切面 - 日志记录

曾经终败给现在 2023-07-10 08:25 7阅读 0赞

## **Springboot对 AOP的配置：** ##

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# AOP
    spring.aop.auto=true # Add @EnableAspectJAutoProxy.
    spring.aop.proxy-target-class=true # Whether subclass-based (CGLIB) proxies are to be created (true), as opposed to standard Java interface-based proxies (false).

## **maven引包** ##

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<dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-aop</artifactId>
            </dependency>
            
            <dependency>
                <groupId>org.slf4j</groupId>
                <artifactId>slf4j-api</artifactId>
            </dependency>
            <dependency>
                <groupId>org.slf4j</groupId>
                <artifactId>slf4j-log4j12</artifactId>
            </dependency>

## **Aspect 切面** ##

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/** * Aspect 切面 * 日志切面 */
    @Aspect
    @Component
    public class LogAspect { 
     
        /** * slf4j日志 */
        private final static Logger logger = LoggerFactory.getLogger(LogAspect.class);
     
        /** * Pointcut 切入点 * 匹配cn.controller包下面的所有方法 */
        @Pointcut("execution(public * cn.controller.*.*(..))")
        public void webLog(){ }
     
        /** * 环绕通知 */
        @Around(value = "webLog()")
        public Object arround(ProceedingJoinPoint pjp) { 
            try { 
                logger.info("1、Around：方法环绕开始.....");
                Object o =  pjp.proceed();
                logger.info("3、Around：方法环绕结束，结果是 :" + o);
                return o;
            } catch (Throwable e) { 
                logger.error(pjp.getSignature() + " 出现异常： ", e);
                return Result.of(null, false, "出现异常：" + e.getMessage());
            }
        }
     
        /** * 方法执行前 */
        @Before(value = "webLog()")
        public void before(JoinPoint joinPoint){ 
            logger.info("2、Before：方法执行开始...");
            // 接收到请求，记录请求内容
            ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
            assert attributes != null;
            HttpServletRequest request = attributes.getRequest();
            // 记录下请求内容
            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()));
     
        }
     
        /** * 方法执行结束，不管是抛出异常或者正常退出都会执行 */
        @After(value = "webLog()")
        public void after(JoinPoint joinPoint){ 
            logger.info("4、After：方法最后执行.....");
        }
     
        /** * 方法执行结束，增强处理 */
        @AfterReturning(returning = "ret", pointcut = "webLog()")
        public void doAfterReturning(Object ret){ 
            // 处理完请求，返回内容
            logger.info("5、AfterReturning：方法的返回值 : " + ret);
        }
     
        /** * 后置异常通知 */
        @AfterThrowing(value = "webLog()")
        public void throwss(JoinPoint joinPoint){ 
            logger.error("AfterThrowing：方法异常时执行.....");
        }
    }

## **效果** ##

--------------------

访问获取所有用户接口  
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