[JavaSpring] Incorrect enum generation for integer-based data types

Description

JavaSpring code generator is serializing number enumerations as strings

Swagger-codegen version

3.0.36, not a regression

Swagger declaration file content or url

openapi: 3.0.0
info:
  version: 1.0
  title: simple
  termsOfService: urn:tos
  contact: {}
  license:
    name: Apache 2.0
    url: http://www.apache.org/licenses/LICENSE-2.0
tags:
  - name: Simple Service
    description: >-
      Simple service
paths:
  /simple:
    get:
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Simple'

components:
  schemas:
    Simple:
      type: object
      properties:
        my_enum:
          type: number
          enum: [1,2,3]

Command line used for generation

> git status
On branch 3.0.0
Your branch is up to date with 'origin/3.0.0'.
> mvn package
[...]
[INFO] Reactor Summary for swagger-codegen-project 3.0.36:
[INFO] 
[INFO] swagger-codegen-project ............................ SUCCESS [  0.538 s]
[INFO] swagger-codegen (core library) ..................... SUCCESS [  8.889 s]
[INFO] swagger-codegen (executable) ....................... SUCCESS [  3.691 s]
[INFO] swagger-codegen (maven-plugin) ..................... SUCCESS [  2.240 s]
[INFO] swagger-generator .................................. SUCCESS [  3.463 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  19.052 s
[INFO] Finished at: 2022-11-15T15:58:09-05:00
[INFO] ------------------------------------------------------------------------

> java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar generate \
   -i ./simple.yaml \
   -l spring \
   -o ~/tmp/swagger-codegen

Steps to reproduce

Serialize a "Simple" resource using the code generated by the above command. Note that the my_enum is serialized as a string instead of a number. This is because the generated code contains a @JsonValue annotation that causes jackson to serialize as a string.

  public enum MyEnumEnum {
    NUMBER_1(new BigDecimal(1)),
    NUMBER_2(new BigDecimal(2)),
    NUMBER_3(new BigDecimal(3));

    private BigDecimal value;

    MyEnumEnum(BigDecimal value) {
      this.value = value;
    }

    @Override
    @JsonValue
    public String toString() {
      return String.valueOf(value);
    }

    @JsonCreator
    public static MyEnumEnum fromValue(String text) {
      for (MyEnumEnum b : MyEnumEnum.values()) {
        if (String.valueOf(b.value).equals(text)) {
          return b;
        }
      }
      return null;
    }
  }

Related issues/PRs

I verified that this exact same issue was fixed for the Java language template in https://github.com/swagger-api/swagger-codegen/pull/5713

Suggest a fix/enhancement

Apply the fix for the Java language template to the JavaSpring language template.

Compare the Java language template fix in PR #5713 with the JavaSpring language template, then generate the supplied OpenAPI example with the Spring generator. Inspect the generated MyEnumEnum and its serialization; done means the integer-based enum values serialize as numbers rather than strings.