我遵循了Mongo文档中的建议，因为子集合有增长的前景，所以在子集合中引用父集合的父子集合。https://docs.mongodb.com/manual/tutorial/model-referenced-one-to-many-relationships-between-documents/发布者(父)集合:{_id:"oreilly",name:"O'ReillyMedia",founded:1980,location:"CA"}图书(子)集-引用其中的出版商:{_id:123456789,title:"MongoDB:TheDefinitiveGuide",author:["K