要连接至mongodb与mongoose一起使用，可以使用:

To connect to mongodb with mongoose, you can use :

mongoose.connect('mongodb://localhost/users_test');

或

mongoose.connect('localhost/users_test');

或

mongoose.connect('localhost','users_test');

但不是mongoose.connect('mongodb:localhost/users_test');，它与正确的主机名(mongodb而不是localhost)不匹配

But not mongoose.connect('mongodb:localhost/users_test');, it doesnt match the right hostname (mongodb instead of localhost)