[java-micronaut] JsonProperty missing for serializationLibrary micronaut_serde_jackson

Description

When using serializationLibrary micronaut_serde_jackson the getters and setters in the generated code is missing the @JsonProperty annotation that is used for serializationLibrary jackson.

If fields in a JSON document does not use camel case notation, then it might not be possible to read the document with the JsonProperty annotation missing. The field myName is then fine, but fields like my_name, MyName, "My Name", "MY_NAME" etc will not work.

openapi-generator version

7.0.1 java-micronaut-client

OpenAPI declaration file content or url

Sample document for generating code:

openapi: 3.0.3
info:
  title: Sample API
  version: 1.0.0
paths:
  /test:
    get:
      responses:
        '200':
          description: Sample response
          content:
            application/json:
              schema:
                type: object
                properties:
                  my_name: 
                    type: string

Command line used for generation

Command-line for generating code with serializationLibrary micronaut_serde_jackson:

openapi-generator generate -i test.yaml -g java-micronaut-client -o output-serde --additional-properties=serializationLibrary=micronaut_serde_jackson

Command-line for generating code with serializationLibrary jackson:

openapi-generator generate -i test.yaml -g java-micronaut-client -o output-jackson --additional-properties=serializationLibrary=jackson

Steps to reproduce

Sample test document:

{
    "my_name": "My name"
}

It is not possible to deserialize the test document above using the Serde version of TestGet200Response since it is missing the @JsonProperty(JSON_PROPERTY_MY_NAME) annotations.

Derserialization using the Jackson versin of TestGet200Response works fine since it has the @JsonProperty(JSON_PROPERTY_MY_NAME) annotations.

Related issues/PRs

Suggest a fix/enhancement

The @JsonProperty(JSON_PROPERTY_MY_NAME) annotations needs to be added also when we are using serializationLibrary micronaut_serde_jackson.

Start with the java-micronaut-client generator and reproduce the issue using the supplied OpenAPI YAML and the two serializationLibrary commands. Compare the generated response model for jackson and micronaut_serde_jackson, then verify deserialization of the provided my_name JSON document. Done means the Serde-generated model handles the non-camel-case property consistently with the Jackson output.