Hi in a Kotlin MPP is there a clean way of serializing a Map | Serialization | Kotlinlang

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m

Max Raskin

2 years ago

Hi, in a Kotlin MPP, is there a clean way of serializing a Map<String, Any> to a JSON string? I've tried doing it using kotlinx.serialization but it seems to support only classes annotated with @Serializable, am I missing something? Thanks 🙂

c

Casey Brooks

2 years ago

Probably not. That would require serializing

Any

to JSON, which is either: 1) always an empty map, since the known

Any

type has no properties, or 2) requires reflection to look up the members of the actual type and recursively serialize those. But reflection is not fully supported in MPP yet, so #2 is not possible, currently.

m

Max Raskin

2 years ago

Understood, thanks for the clarification

s

Sam

2 years ago

There's a not so clean way to do it with a custom serializer.

s

sandwwraith

2 years ago

Recommended way to go is to convert your map to

JsonObject

.

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