第一步：关上Providers/AppServiceProvider.php，新增办法sql_listen()

/** * listen database and dump sql which only be used for debug * @param bool|false $isShowTime */function sql_listen($isShowTime = false){    app('db')->listen(function ($queryExecuted, $bindings = [], $time = '') use ($isShowTime) {        static $_static_sql = [];        $sql = '';        if (is_object($queryExecuted)) {            $sql      = $queryExecuted->sql;            $bindings = $queryExecuted->bindings;            $time     = $queryExecuted->time;        }        foreach ($bindings as $i => $binding) {            if (is_string($binding)) {                $bindings[$i] = "'$binding'";            }        }        $rawSql = str_replace(array(            '%',            '?'        ), array(            '%%',            '%s'        ), $sql);        $rawSql = vsprintf($rawSql, $bindings) . ';';        if (!$_static_sql || !in_array($rawSql, $_static_sql)) {            $_static_sql[] = $rawSql;        } else {            return;        }        $usedTime = '';        if ($isShowTime) {            $time     = $time / 1000;            $usedTime = " ({$time}s)";        }        $sqlContent     = $rawSql . $usedTime;        logger()->channel('sqlLog')->info("我是SQL：" . $sqlContent . PHP_EOL, [            //'raw_sql'         => $sql,            'connection_name' => isset($queryExecuted->connectionName) ? $queryExecuted->connectionName : '',            'duration_time'   => round($time, 5),            'created_at'      => date('Y-m-d H:i:s')        ]);    });}

而后boot办法注册sql_listen()函数

/** * Bootstrap any application services. * * @return void */public function boot(){    $this->sql_listen(true);    //sql监听，用于调试或者查看慢sql    Schema::defaultStringLength(191); //add fixed sql}

第二步：config/logging.php channels 中减少sqlLog数组

'sqlLog' => [    'driver'     => 'daily',    'name'       => 'sql监听',    'path'       => storage_path('logs/sql.log'),    'level'      => 'debug',    'days'       => 15,    'permission' => 0664,],

第三步：革除下缓存

第四步：去执行一个带数据库的操作，而后回来查看有没有日志
日志目录：我的项目目录 /storage/logs/

tail -f sql-2021-04-23.log 开心的去调试吧