如何使用 node.js 替换 mongo db 中的文档

Question

任何人都可以帮助如何使用node.js中的replaceone函数替换mongodb中的整个文档

Answer 1

As from the name and documentation replaceOne is used to Replaces a single document within the collection based on the filter .

The Syntax from the documentation

db.collection.replaceOne(
   <filter>,
   <replacement>,
   {
     upsert: <boolean>,
     writeConcern: <document>,
     collation: <document>,
     hint: <document|string>                   // Available starting in 4.2.1
   }
)

To replace multiple documents,

1) Remove the desired documents with remove() Method and then, run insertMany() Method.

OR

2) use updateMany() Method to update multiple documents matching the filter with a particular set of value.

db.collection.updateMany(
   <filter>,
   <update>,
   {
     upsert: <boolean>,
     writeConcern: <document>,
     collation: <document>,
     arrayFilters: [ <filterdocument1>, ... ],
     hint:  <document|string>        // Available starting in MongoDB 4.2.1
   }
)