AOP拦截实现日志统一打印

用户9919783

发布于 2022-12-14 10:29:40

67900

代码可运行

文章被收录于专栏：后端从入门到精通后端从入门到精通

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代码可运行

需求背景：每个接口都有入参出参，如果每次都需要自己写代码打印入参出参，大家是否觉得很繁琐，为了减少冗余代码，提高同事工作效率，减少工作量，于是给代码加了aop统一拦截。

其实其他项目里已经有aop拦截，但是需要自己去加注解实现，如果每个接口需要自己手动加一个注解才会打印日志，我依然还是觉得很麻烦，为了大家专注于自己的需求开发，于是进行优化。

首先加注解代码如下：


/**
 * log注解
 *
 * @author keying
 */
@Target({ElementType.TYPE, ElementType.METHOD, ElementType.ANNOTATION_TYPE})
@Retention(RetentionPolicy.RUNTIME)
public @interface LogAnnotation {


}

/**
 * 日志统一打印
 * @author keying
 * @date 2022-11-03 19:40:28
 */
@Aspect
@Component
@Slf4j
public class LogAspect2 {

    private final String REQUEST = "REQUEST URL:{},REQUEST METHOD:{},REQUEST PARAM:{}";
    private final String RESPONSE = "RESPONSE URL:{},RESPONSE METHOD:{},RESPONSE PARAM:{}";

    @Pointcut("@annotation(com.ztocc.tms.operates.controller.config.LogAnnotation)")
    public void requestAspect() {
    }


    @Before(value = "requestAspect()")
    public void methodBefore(JoinPoint joinPoint) {
        ServletRequestAttributes requestAttributes = (ServletRequestAttributes)
                RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = requestAttributes.getRequest();
        log.info(REQUEST, request.getRequestURI(), request.getMethod(),
                JSON.toJSONString(Arrays.toString(joinPoint.getArgs())));

    }

    @AfterReturning(returning = "o", pointcut = "requestAspect()")
    public void methodAfter(Object o) {
        ServletRequestAttributes requestAttributes = (ServletRequestAttributes)
                RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = requestAttributes.getRequest();
        log.info(RESPONSE, request.getRequestURI(), request.getMethod(),
                JSONObject.toJSONString(o));
    }
}


 @PostMapping("/query_page")
    @LogAnnotation
    public Result<PageVo<ManageScanPageVO>> queryPage(@RequestBody ManageScanPageReq req) {
}

从图上可以看到，日志已经打印成功了

第一步：写一个注解，通过Aspect技术把拦截注解修饰的方法。

第二步：把注解写到需要打印日志的接口上。

于是通过修改上面代码，可以使代码更简洁，并且开发人员不需要关心是否加注解来打印日志。



/**
 * 日志统一打印
 * @author keying
 * @date 2022-11-03 19:40:28
 */
@Aspect
@Component
@Slf4j
public class LogAspect {

    private final String REQUEST = "REQUEST URL:{},REQUEST METHOD:{},REQUEST PARAM:{}";
    private final String RESPONSE = "RESPONSE URL:{},RESPONSE METHOD:{},RESPONSE PARAM:{}";

    /**
     * 拦截controller
     */
    @Pointcut("within(com.ztocc.tms.operates.controller..*)")
    public void requestAspect() {
    }


    @Before(value = "requestAspect()")
    public void methodBefore(JoinPoint joinPoint) {
        ServletRequestAttributes requestAttributes = (ServletRequestAttributes)
                RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = requestAttributes.getRequest();
        log.info(REQUEST, request.getRequestURI(), request.getMethod(),
                JSON.toJSONString(Arrays.toString(joinPoint.getArgs())));

    }

    @AfterReturning(returning = "o", pointcut = "requestAspect()")
    public void methodAfter(Object o) {
        ServletRequestAttributes requestAttributes = (ServletRequestAttributes)
                RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = requestAttributes.getRequest();
        log.info(RESPONSE, request.getRequestURI(), request.getMethod(),
                JSONObject.toJSONString(o));
    }
}