CODEWITHSUNDEEP
kotlinjacksonopenapi-generator
Jonathan R
Jonathan R

Reputation: 3928

OpenAPI Generator Kotlin Jackson

I use the openapi generator kotlin module to generate kotlin classes from my openapi.yaml file. The process works fine until I try to deserialize the received JSON in my code to a kotlin class using Jackson.

This is the generated class

data class Request (
    @field:JsonProperty("name")
    var name: kotlin.String,
)

This is the error I get

java.lang.IllegalArgumentException: Cannot construct instance of `...package.Request` (although at least one Creator exists): cannot deserialize from Object value (no delegate- or property-based Creator)
 at [Source: UNKNOWN; byte offset: #UNKNOWN]

I noticed that when I remove the "@field:" part in the generated code, then everything works like a charm.

So now my question is can I either remove the @field from the generator or make Jackson deserialize it correctly?

The versions that I use are

Upvotes: 1

Views: 1968

Answers (1)

Malthor
Malthor

Reputation: 11

I had the same error and registering the Kotlin Jackson module fixed it for me: https://github.com/FasterXML/jackson-module-kotlin

Upvotes: 1

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