如何在 Spring Boot 中将 google.protobuf.Timestamp 转换为 MongoDB ISO 日期？

Question

In my Spring Boot project I get timestamps in of the type google.protobuf.Timestamp in my gRPC Service. How do I insert that timestamp into my MongoDB in the following format:

Example: 2022-01-14T13:00:00.000+02:00

The timestamp has a seconds and a nanos field. I've tried to say dataList.getTime.getNanos() but this inserts a time in from year 1971. How do I get the correct time?

Answer 1

I don't know the answer as I don't use Java|Spring or MongoDB but...

MongoDB uses milliseconds and supports RFC3339

Timestamp's Java implementation (4.0.0-rc2) supports toMillis and toString methods.

I think you've at least 2 options:

Either new Date(dataList.getTime.toMillis()) assuming that there's aa constructor for Date that accepts milliseconds.

Or new ISODate(dataList.getTime.String()) return a Date constructed from the RFC3339 string representation.