优雅的日志记录：自定义注解结合AOP实现

=======Start========
请求路径         :/log
描述信息         :访问log接口进行测试
请求方式         :GET
请求Controller的全路径以及执行方法  :com.lili.controller.LogController,log
请求IP                 :0:0:0:0:0:0:0:1
请求参数         :[1]
Response          "success"
=========End==========

<dependencies>
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-aop</artifactId>
    </dependency>
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>fastjson</artifactId>
        <version>1.2.80</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface SystemLog {
    // 该参数表示你想描述的内容
    String businessName();
}

@Component
@Aspect
@Slf4j
public class LogAspect {
    @Pointcut("@annotation(com.lili.annotation.SystemLog)")
    public void pt(){
    }
    @Around("pt()")
    public Object printLog(ProceedingJoinPoint joinPoint) throws Throwable {
        Object proceed ;
        try {
             handleBefore(joinPoint);
             proceed = joinPoint.proceed();
             handleAfter(proceed);
        } finally {
            // 结束后执行
            log.info("=========End=========="+System.lineSeparator());
        }
        return proceed;
    }
    private void handleAfter(Object proceed) {
        log.info("Response          {}",JSON.toJSONString(proceed));
    }
    private void handleBefore(ProceedingJoinPoint joinPoint){
        ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        // 获取request
        assert requestAttributes != null;
        HttpServletRequest request = requestAttributes.getRequest();
        // 获取被增强方法上的注解
        SystemLog systemLog = getSystemLog(joinPoint);
        log.info("=======Start========");
        // 打印请求url
        log.info("请求路径         :{}",request.getRequestURI());
        // 打印描述信息
        log.info("描述信息         :{}",systemLog.businessName());
        // 打印Http method
        log.info("请求方式         :{}",request.getMethod());
        // 打印调用controller的全路径以及执行方法
        log.info("请求Controller的全路径以及执行方法  :{},{}",joinPoint.getSignature().getDeclaringTypeName(),((MethodSignature)joinPoint.getSignature()).getName());
        // 打印请求的ip
        log.info("请求IP                 :{}",request.getRemoteHost());
        // 打印请求入参
        log.info("请求参数         :{}", JSON.toJSONString(joinPoint.getArgs()));
    }
    private SystemLog getSystemLog(ProceedingJoinPoint joinPoint) {
        MethodSignature methodSignature = (MethodSignature) joinPoint.getSignature();
        SystemLog annotation = methodSignature.getMethod().getAnnotation(SystemLog.class);
        return annotation;
    }
}

@RestController
public class LogController {
    @SystemLog(businessName = "访问log接口进行测试")
    @RequestMapping("/log")
    public String log(int id){
        return "success";
    }
}