查看mysql_error.log 如下：
2018-03-21 14:59:06 30264 [ERROR] InnoDB: Attempted to open a previously opened tablespace. Previous tablespace mysql/slave_relay_log_info uses space ID: 3 at filepath: ./mysql/slave_relay_log_info.ibd. Cannot open tablespace ecshop/ecs_device which uses space ID: 3 at filepath: ./ecshop/ecs_device.ibd
2018-04-06 14:41:17 53182 [ERROR] InnoDB: Attempted to open a previously opened tablespace. Previous tablespace mysql/slave_relay_log_info uses space ID: 3 at filepath: ./mysql/slave_relay_log_info.ibd. Cannot open tablespace ecshop/ecs_device which uses space ID: 3 at filepath: ./ecshop/ecs_device.ibd
2018-04-06 14:41:18 53743 [ERROR] InnoDB: Attempted to open a previously opened tablespace. Previous tablespace mysql/slave_relay_log_info uses space ID: 3 at filepath: ./mysql/slave_relay_log_info.ibd. Cannot open tablespace ecshop/ecs_device which uses space ID: 3 at filepath: ./ecshop/ecs_device.ibd
2018-04-06 14:54:52 54670 [ERROR] InnoDB: Attempted to open a previously opened tablespace. Previous tablespace mysql/slave_relay_log_info uses space ID: 3 at filepath: ./mysql/slave_relay_log_info.ibd. Cannot open tablespace ecshop/ecs_device which uses space ID: 3 at filepath: ./ecshop/ecs_device.ibd
2018-04-06 14:54:53 55190 [ERROR] InnoDB: Attempted to open a previously opened tablespace. Previous tablespace mysql/slave_relay_log_info uses space ID: 3 at filepath: ./mysql/slave_relay_log_info.ibd. Cannot open tablespace ecshop/ecs_device which uses space ID: 3 at filepath: ./ecshop/ecs_device.ibd
2018-04-06 14:54:53 55190 [ERROR] InnoDB: Attempted to open a previously opened tablespace. Previous tablespace mysql/slave_master_info uses space ID: 4 at filepath: ./mysql/slave_master_info.ibd. Cannot open tablespace ecshop/ecs_order_review which uses space ID: 4 at filepath: ./ecshop/ecs_order_review.ibd
2018-04-06 14:54:53 55190 [ERROR] InnoDB: Attempted to open a previously opened tablespace. Previous tablespace mysql/slave_worker_info uses space ID: 5 at filepath: ./mysql/slave_worker_info.ibd. Cannot open tablespace ecshop/ecs_push which uses space ID: 5 at filepath: ./ecshop/ecs_push.ibd
2018-04-06 14:54:53 55190 [ERROR] InnoDB: Attempted to open a previously opened tablespace. Previous tablespace mysql/innodb_index_stats uses space ID: 2 at filepath: ./mysql/innodb_index_stats.ibd. Cannot open tablespace ecshop/ecs_cert which uses space ID: 2 at filepath: ./ecshop/ecs_cert.ibd
2018-04-06 14:54:53 55190 [ERROR] InnoDB: Attempted to open a previously opened tablespace. Previous tablespace mysql/innodb_table_stats uses space ID: 1 at filepath: ./mysql/innodb_table_stats.ibd. Cannot open tablespace ecshop/ecs_config which uses space ID: 1 at filepath: ./ecshop/ecs_config.ibd
解决办法
打开MAMP PRO，选择菜单栏File->Edit Template->MySQL(my.cnf)->5.6.38，这时打开了一个文本，找到[mysqld]在其下方添加一句:innodb_force_recovery = 1。
然后再尝试重启MySQL服务。