Can Go Structs Have Multiple JSON Tags for Serialization?

Multiple JSON Tags for Structs in Go

When managing data from different sources and destinations with JSON, it can be desirable to modify the JSON tags used for serialization. This article explores the possibility of having multiple JSON tags for a Go struct.

Direct Tagging Approach

Although it may seem logical to attempt using multiple tags as seen in the question, Go does not support this approach. As explained in the answer, Go's JSON encoder/decoder expects exactly one JSON tag per field.

Casting Between Structs

Despite the lack of multiple JSON tags, there is an alternative solution that leverages casting. By creating two structs with identical field layout and types, one can cast from one to the other to effectively change the JSON tags. However, this approach requires caution and should be utilized carefully.

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