在 Yii 2.0 中，浏览器发现无响应，进而重复请求的排查分析

1、在 Yii 2.0 中无响应，进而导致在浏览器中重复请求了 2 次。第 1 次无响应，第 2 次报错(程序禁止重复请求)。如图1

图1

2、查看第 1 次请求的详细信息，在 标头 – 常规中，无响应状态码。如图2

图2

3、查看第 1 次请求的详细信息，在 响应 中，无法加载响应数据。如图3

图3

4、查看 Log Messages，在 E:\wwwroot\channel-pub-api\common\services\WeiboWeiboConnectWebAppAccessTokenService.php:92 处就停止往下执行了，实则应该继续执行才是。如图4

图4

5、查看代码，第 92 行：$weiboWeiboConnectWebAppUserAccessToken->save()

    public function saveModel($data)
    {
        /* 基于微博的微连接的网页应用的用户ID查找状态为启用的单个资源 */
        $weiboWeiboConnectWebAppUserAccessToken = WeiboWeiboConnectWebAppUserAccessToken::find()->where(['weibo_weibo_connect_web_app_user_id' => $data['weiboWeiboConnectWebAppUserId']])->isDeletedNo()->enabled()->one();
        if (!isset($weiboWeiboConnectWebAppUserAccessToken)) {
            $weiboWeiboConnectWebAppUserAccessToken = new WeiboWeiboConnectWebAppUserAccessToken();
        }

        // 设置访问令牌的有效截止时间
        $time = time();
        $accessTokenExpireAt = $time + $data['expires_in'] + Yii::$app->params['weiboAuth']['weiboConnectWebApp']['authPeriod'] - Yii::$app->params['refreshToken']['timeOut'];
        $weiboWeiboConnectWebAppUserAccessToken->attributes = [
            'weibo_weibo_connect_web_app_id' => $data['weiboWeiboConnectWebAppId'],
            'channel_app_source_id' => $data['channelAppSourceId'],
            'channel_app_source_uuid' => $data['channelAppSourceUuid'],
            'weibo_weibo_connect_web_app_user_id' => $data['weiboWeiboConnectWebAppUserId'],
            'weibo_weibo_connect_web_app_user_uuid' => $data['weiboWeiboConnectWebAppUserUuid'],
            'grant_type' => $data['grantType'],
            'access_token' => $data['access_token'],
            'expires_in' => $data['expires_in'],
            'expires_at' => $accessTokenExpireAt,
            'scope' => isset($data['scope']) ? $data['scope'] : '',
            'user_id' => $data['uid'],
            'status' => WeiboWeiboConnectWebAppUserAccessToken::STATUS_ENABLED,
        ];

        if ($weiboWeiboConnectWebAppUserAccessToken->save()) {
            return ['status' => true, 'data' => ['channel_app_source_uuid' => $data['channelAppSourceUuid']]];
        } elseif ($weiboWeiboConnectWebAppUserAccessToken->hasErrors()) {
            $firstError = '';
            foreach ($weiboWeiboConnectWebAppUserAccessToken->getFirstErrors() as $message) {
                $firstError = $message;
                break;
            }
            return ['status' => false, 'code' => 214010, 'message' => Yii::t('error', Yii::t('error', Yii::t('error', '214010'), ['first_error' => $firstError]))];
        } elseif (!$weiboWeiboConnectWebAppUserAccessToken->hasErrors()) {
            throw new ServerErrorHttpException('Failed to insert/update the object (microblogging micro-connected web application user\'s access token) for unknown reason.');
        }
    }

6、在第 92 行之前打印对象：$weiboWeiboConnectWebAppUserAccessToken。打印结果如下。且第 1 次请求响应 200。如图5

图5

common\logics\WeiboWeiboConnectWebAppUserAccessToken Object
(
    [_attributes:yii\db\BaseActiveRecord:private] => Array
        (
            [weibo_weibo_connect_web_app_id] => 1
            [channel_app_source_id] => 39
            [channel_app_source_uuid] => c28915a6a8cb11ebba6254ee75d2ebc1
            [weibo_weibo_connect_web_app_user_id] => 6
            [weibo_weibo_connect_web_app_user_uuid] => c28a3efea8cb11ebb69354ee75d2ebc1
            [grant_type] => authorization_code
            [access_token] => 2.00bAKoqCV9i7fEee243e798c0zzui2
            [expires_in] => 2626935
            [expires_at] => 1622394001
            [scope] => 
            [user_id] => 2612590013
            [status] => 1
        )

)

7、编辑代码，第 92 行：$weiboWeiboConnectWebAppUserAccessToken->save(false)，保存记录之前不做验证(数据是可信任的)，以避免验证时间过长，进而导致响应时间过长，进而浏览器重复请求的情况。注：此前，此模型为 Redis AR 模型，后来调整为 MySQL AR 模型。在浏览器查看其时长为：2.57 秒。如图6、图7

图6

图7

    public function saveModel($data)
    {
        /* 基于微博的微连接的网页应用的用户ID查找状态为启用的单个资源 */
        $weiboWeiboConnectWebAppUserAccessToken = WeiboWeiboConnectWebAppUserAccessToken::find()->where(['weibo_weibo_connect_web_app_user_id' => $data['weiboWeiboConnectWebAppUserId']])->isDeletedNo()->enabled()->one();
        if (!isset($weiboWeiboConnectWebAppUserAccessToken)) {
            $weiboWeiboConnectWebAppUserAccessToken = new WeiboWeiboConnectWebAppUserAccessToken();
        }

        // 设置访问令牌的有效截止时间
        $time = time();
        $accessTokenExpireAt = $time + $data['expires_in'] + Yii::$app->params['weiboAuth']['weiboConnectWebApp']['authPeriod'] - Yii::$app->params['refreshToken']['timeOut'];
        $weiboWeiboConnectWebAppUserAccessToken->attributes = [
            'weibo_weibo_connect_web_app_id' => $data['weiboWeiboConnectWebAppId'],
            'channel_app_source_id' => $data['channelAppSourceId'],
            'channel_app_source_uuid' => $data['channelAppSourceUuid'],
            'weibo_weibo_connect_web_app_user_id' => $data['weiboWeiboConnectWebAppUserId'],
            'weibo_weibo_connect_web_app_user_uuid' => $data['weiboWeiboConnectWebAppUserUuid'],
            'grant_type' => $data['grantType'],
            'access_token' => $data['access_token'],
            'expires_in' => $data['expires_in'],
            'expires_at' => $accessTokenExpireAt,
            'scope' => isset($data['scope']) ? $data['scope'] : '',
            'user_id' => $data['uid'],
            'status' => WeiboWeiboConnectWebAppUserAccessToken::STATUS_ENABLED,
        ];

        if ($weiboWeiboConnectWebAppUserAccessToken->save(false)) {
            return ['status' => true, 'data' => ['channel_app_source_uuid' => $data['channelAppSourceUuid']]];
        } elseif ($weiboWeiboConnectWebAppUserAccessToken->hasErrors()) {
            $firstError = '';
            foreach ($weiboWeiboConnectWebAppUserAccessToken->getFirstErrors() as $message) {
                $firstError = $message;
                break;
            }
            return ['status' => false, 'code' => 214010, 'message' => Yii::t('error', Yii::t('error', Yii::t('error', '214010'), ['first_error' => $firstError]))];
        } elseif (!$weiboWeiboConnectWebAppUserAccessToken->hasErrors()) {
            throw new ServerErrorHttpException('Failed to insert/update the object (microblogging micro-connected web application user\'s access token) for unknown reason.');
        }
    }

8、查看重复请求 2 次时的第 1 次请求的响应时间长度，皆在 2500 ms 以上。如图8

图8

9、还原代码，第 92 行：$weiboWeiboConnectWebAppUserAccessToken->save()。当环境设置为：Production 时，也不会响应时间过长。在浏览器查看其时长为：1.56 秒。由此得出结论：验证与否固然会影响响应时长，但是其根本还是在于环境设置(Development)所导致。如图9

图9