Mongoose 4.11 开始的问题 useMongoClient

最新推荐文章于 2022-03-02 00:51:37 发布

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最新推荐文章于 2022-03-02 00:51:37 发布 · 3.4k 阅读

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在升级到Mongoose 4.11.0及以上版本时，`useMongoClient`被弃用。这个警告源于MongoDB Node.js驱动，因为连接和认证在MongoDB中是独立的操作。MongoDB计划在3.6版本中整合这两个操作。为支持MongoDB 3.6，推荐尽早使用`useMongoClient`选项。对于已成功连接的情况，代码不应有变化，但在MongoDB 3.6发布前，最好开始使用`useMongoClient`。

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在打开mongoose时发现一个报错问题
DeprecationWarning: open() is deprecated in mongoose >= 4.11.0, use openUri() instead, or set the useMongoClient option if using connect() or createConnection(). See http://mongoosejs.com/docs/connections.html#use-mongo-client
opened

这上面虽然指出了解决问题的方法，但为什么要这样做呢？

于是google一下，果然找出了答案

This warning comes from the MongoDB Node.js driver. Currently, connecting and authenticating are distinct operations in MongoDB. You can connect to your database and then authenticate later, which is what mongoose 4.x does by default. You can even authenticate as multiple different users on the same connection.

As far as I understand, MongoDB is planning on removing this functionality in 3.6 and consolidating connecting and authenticating into one single o