Web項目添加接口響應時長

背景：前幾天公司上線了一個項目(手機H5項目)說是用戶和老闆都覺得相應速度比較慢，然後下來要查找原因，所以就需要統計服務器端接口調用時長。
方案：
1.Logback+code
具體的操作步驟就是在每個方法的調用前後加上時間點，然後再把這些結果記錄到日誌中。
接口內調用的代碼：

@Override
    public User getUserInfo(int userId) {
        Long correspondingStartTime = System.currentTimeMillis();
        logger.debug("debug_getUserInfo userId\t" + userId);
        try {
            User user = userInfoService.getUserInfo(userId);
            if(user==null||userId<=0){
                logger.debug("getUserInfo userId==null"+userId);
            }else{
                logger.debug("getUserInfo userId\t" + userId + ",response:" + user.toString());
            }
            Long correspondingEndTime = System.currentTimeMillis();
            CorrespondingTime.correspondingTime("UserServiceImpl", "getUserInfo", correspondingStartTime, correspondingEndTime);
            return user;
        } catch (RuntimeException e) {
            logger.error("getUserInfo  userId:" + userId, e);
            // 封裝對象。
            User user = new User();
            return user.setError(getBaseResponse(e));
        }
    }

相應時長統計類：

public class CorrespondingTime {
    private static final Logger logger = LoggerFactory.getLogger("CorrespondingTimeLog");
    public static void correspondingTime(String clazzName,String methodName,Long correspondingStartTime,Long correspondingEndTime){
        logger.info(clazzName+";"+methodName+";"+(correspondingEndTime-correspondingStartTime));
    }
}

Logback添加日誌文件：

  <appender name="correspondingTime" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <File>../user-log/server-correspondingTime.log</File>
        <encoder>
            <pattern>%m%n</pattern>
        </encoder>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>../user-log/server-correspondingTime.log.%d{yyyy-MM-dd}</fileNamePattern>
        </rollingPolicy>
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>info</level>
        </filter>
    </appender>
     /*日誌文件名稱*/
    <logger name="CorrespondingTimeLog" additivity="false">
        <appender-ref ref="correspondingTime" />
    </logger>

2.Spring AOP
既然Spring aop能夠在方法內輸出日誌，那麼在方法內部肯定能夠實現對接口響應時長的統計。查找資料如下：

@Aspect
@Component
public class TimestatAspect {
    private static final Logger LOG = LoggerFactory.getLogger(TimestatAspect.class);
    @Around("execution(* com.baidu.soa.crm.user.dao.impl.*DaoImpl.*(..))")
    public Object printTime(ProceedingJoinPoint pjp) throws Throwable {
        long l1 = System.currentTimeMillis();
        Object obj = pjp.proceed();
        String param = "(";
        Object[] params = pjp.getArgs();
        if (params != null) {
            boolean first = true;
            for (Object o : params) {
                String p = (o == null ? "null" : o.toString());
                if (first) {
                    param = param + p;
                    first = false;
                } else
                    param = param + ":" + p;
            }
        }
        param = param + ")";
        LOG.debug("類名爲:" + pjp.getTarget().getClass().getName() + "|方法名爲:" + pjp.getSignature().getName() + "|參數爲:" + param + "|執行時間爲:" + (System.currentTimeMillis() - l1));
        return obj;
    }
}

總結：
1、比較好想，也容易實現但是有點土鱉。如果需要統計的接口過多，那麼改動量就很大，不推薦。
2、調用Spring AOP自身屬性，比較簡單，能夠實現對多出接口的統計，贊！