Primitive.ObjectID转换为字符串 [英] Primitive.ObjectID to string

问题描述

我试图在Go中将原始类型Object.ID转换为字符串.我正在使用go.mongodb.org/mongo-driver

I am trying to convert type primitive.ObjectID to string in Go. I am using mongo-driver from go.mongodb.org/mongo-driver

我尝试使用类似类型的断言

I tried using type assertion like

mongoId := mongoDoc["_id"];
stringObjectID := mongoId.(string)

哪个VSCode接受.代码被编译，并在到达此特定代码行时抛出此错误

Which VSCode accepts. Code gets compiled and when it reaches this specific line of code, it throws this error

panic: interface conversion: interface {} is primitive.ObjectID, not string

推荐答案

错误消息告诉 mongoDoc ["_ id"] 类型为 interface {} ，其中包含一个类型 primitive.ObjectID .这不是 string ，而是一种不同的类型.您只能从接口值中输入assert primitive.ObjectID .

The error message tells mongoDoc["_id"] is of type interface{} which holds a value of type primitive.ObjectID. This is not a string, it's a distinct type. You can only type assert primitive.ObjectID from the interface value.

如果您想要此MongoDB ObjectId的 string 表示形式，则可以使用其

If you want a string representation of this MongoDB ObjectId, you may use its ObjectID.Hex() method to get the hex representation of the ObjectId's bytes:

mongoId := mongoDoc["_id"]
stringObjectID := mongoId.(primitive.ObjectID).Hex()

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