如何在微服务的日志中记录每个接口URL、状态码和耗时信息？

一、实现方式

1.直接通过SpringCloud-GateWay 的GlobalFilter实现

2.AOP+反射+自定义注解自己封装

二、具体实现

1.自定义注解

@Target({ElementType.METHOD})//作用在方法上
@Retention(RetentionPolicy.RUNTIME)//运行时生效
public @interface MethodExporter{
    //自定义注解只是为了提供切入点
}

2.通用controller

@RestController
@Slf4j
public class MethodExporterController{

    //http://localhost:24618/method/list?page=1&rows=7
    @GetMapping(value = "/method/list")
    @MethodExporter
    public Map list(@RequestParam(value = "page",defaultValue = "1") int page,
                    @RequestParam(value = "rows",defaultValue = "5")int rows){
        Map<String,String> result = new LinkedHashMap<>();
        result.put("code","200");
        result.put("message","success");

        //暂停毫秒
        try { TimeUnit.MILLISECONDS.sleep(new Random().nextInt(1000)); } catch (InterruptedException e) { e.printStackTrace(); }

        return result;
    }

    @MethodExporter
    @GetMapping(value = "/method/get")
    public Map get(){
        Map<String,String> result = new LinkedHashMap<>();
        result.put("code","404");
        result.put("message","not-found");

        //暂停毫秒
        try { TimeUnit.MILLISECONDS.sleep(new Random().nextInt(1000)); } catch (InterruptedException e) { e.printStackTrace(); }

        return result;
    }

    @GetMapping(value = "/method/update")
    public String update(){
        System.out.println("update method without     @MethodExporter");
        return "ok update";
    }

}

3.AOP切面类

@Aspect
@Component
@Slf4j
public class MethodExporterAspect
{
    //容器捞鱼，谁带着使用了MethodExporter注解将会触发Around业务逻辑
    @Around("@annotation(com.atguigu.interview2.annotations.MethodExporter)")
    public Object methodExporter(ProceedingJoinPoint proceedingJoinPoint) throws Throwable
    {
        Object retValue = null;

        long startTime = System.currentTimeMillis();
        System.out.println("-----@Around环绕通知AAA-methodExporter");

        retValue = proceedingJoinPoint.proceed(); //放行

        long endTime = System.currentTimeMillis();
        long costTime = endTime - startTime;

        //1 获得重载后的方法名
        MethodSignature signature = (MethodSignature) proceedingJoinPoint.getSignature();
        Method method = signature.getMethod();

        //2 确定方法名后获得该方法上面配置的注解标签MyRedisCache
        MethodExporter methodExporterAnnotation = method.getAnnotation(MethodExporter.class);

        if (methodExporterAnnotation != null)
        {
            //3 获得方法里面的形参信息
            StringBuffer jsonInputParam = new StringBuffer();
            Object[] args = proceedingJoinPoint.getArgs();
            DefaultParameterNameDiscoverer discoverer = new DefaultParameterNameDiscoverer();
            String[] parameterNames = discoverer.getParameterNames(method);
            for (int i = 0; i < parameterNames.length; i++)
            {
                jsonInputParam.append(parameterNames[i] + "\t" + args[i].toString()+";");
            }
            //4 将返回结果retValue序列化
            String jsonResult = null;
            if(retValue != null){
                jsonResult = new ObjectMapper().writeValueAsString(retValue);
            }else{
                jsonResult = "null";
            }

            log.info("\n方法分析上报中 " +
                    "\n类名方法名:"+proceedingJoinPoint.getTarget().getClass().getName()+"."+proceedingJoinPoint.getSignature().getName()+"()"+
                    "\n执行耗时:"+costTime+"毫秒"+
                    "\n输入参数:"+jsonInputParam+""+
                    "\n返回结果:"+jsonResult+"" +
                    "\nover"
            );
            System.out.println("-----@Around环绕通知BBB-methodExporter");
        }

        return retValue;
    }
}