[Bug] [Spring] Invalid @Valid for List body parameter

[keesvandaalen]

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

A warning is logged for an endpoint that takes a list of items as the request body:

HV000271: Using @Valid on a container (java.util.List) is deprecated. You should apply the annotation on the type argument(s).

The endpoint works fine but may not do so in the future.

openapi-generator version

7.24.0

OpenAPI declaration file content or url

https://github.com/keesvandaalen/openapi-generator-demo/blob/main/api.yaml

Generation Details

https://github.com/keesvandaalen/openapi-generator-demo/blob/b38efb8270229f2f760dc4dae505e53d7420d1fa/pom.xml#L56

Steps to reproduce

• Checkout https://github.com/keesvandaalen/openapi-generator-demo/tree/main
• Run mvn spring-boot:run
• Call the endpoint: curl -X POST -H 'Content-Type: application/json' -d '[1,2,3]' http://localhost:8080/api/v1/demo
• Inspect the logs to see this warning: HV000271: Using @Valid on a container (java.util.List) is deprecated. You should apply the annotation on the type argument(s). Affected element: ApiApi#apiV1DemoPost(List)

Related issues/PRs

None

Suggest a fix

Uncomment templateDirectory and do the steps to reproduce again.
Now there is no warning.

[jpfinne]

@keesvandaalen please change the title. For example [Bug] [Spring] Invalid @Valid for List body parameter