$ nodemon ./bin/www
[nodemon] 3.0.1
[nodemon] to restart at any time, enter `rs`
[nodemon] watching path(s): *.*
[nodemon] watching extensions: js,mjs,cjs,json
[nodemon] starting `node ./bin/www`
null
mongodb://127.0.0.1:27017/H51901
3000
(node:17548) Warning: Accessing non-existent property 'count' of module exports inside circular dependency
(Use `node --trace-warnings ...` to show where the warning was created)
(node:17548) Warning: Accessing non-existent property 'findOne' of module exports inside circular dependency
(node:17548) Warning: Accessing non-existent property 'remove' of module exports inside circular dependency
(node:17548) Warning: Accessing non-existent property 'updateOne' of module exports inside circular dependency
数据库连接成功
保存成功