如何使用node.js将_bsonType objectID值转换为字符串/objectId插入元素

Question

我有一个包含bellow的对象的JSON文件。

{
    userID: {"_bsontype":"ObjectID","id":{"0":92,"1":237,"2":216,"3":42,"4":254,"5":178,"6":68,"7":182,"8":208,"9":254,"10":51,"11":64}},
    userName: "abc"
}

Note ：也有一些嵌套字段，例如UserId。

试图使用批量插入错误插入错误

UnhandledPromiseRejectionWarning: Error: object [{"_bsontype":"ObjectID","id":{"0":92,"1":237,"2":216,"3":42,"4":254,"5":178,"6":68,"7":182,"8":208,"9":254,"10":51,"11":64}}] is not a valid ObjectId

如何将userId转换为objectId/string？例如ObjectId("5d1de1bab90f8bf15f58df3f")或"5d1de1bab90f8bf15f58df3f"

DB中的预期输出：

{
    userID: ObjectId("5d1de1bab90f8bf15f58df3f"),
    userName: "abc"
}

或

{
    userID: "5d1de1bab90f8bf15f58df3f",
    userName: "abc"
}

Answer 1

谢谢你，

您已经让我走上了正确的轨道。只是为了它。这是我的效用功能。冗长但有效。

const { ObjectID } = require( 'mongodb' )
  toObjectID: function ( object ) {
    let hexString = ''
    Object.values(object.id).forEach(elem =>{
      const result = elem.toString(16)
      if(result.length === 2) {
        hexString += result
      } else {
        hexString += "0" + result
      }
    })
    const id = new ObjectID(hexString)
    return id
  }

Answer 2

我在objectid插入的情况下也能够解决。这些步骤 - 尽管看来是在这种情况下 - 将实现目标：

1 。将base10 int数组的ID转换为base16字符串：

const idString = obj.userID.id.map(num => {
  var result = num.toString(16);
  return result.length == 2 ? num : "0" + num;
})
.join('');

2 。从字符串创建对象ID：

const _id = ObjectID(idString);

3 。转换回字符串将objectid转换回MongoDB在插入或更新文档时期望的objectid((表单：

_id.toString();