Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• What's the version of OpenAPI Generator used?
• Have you search for related issues/PRs?
• What's the actual output vs expected output?
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Description

The generated server stub does not handle data (defined as schema in OpenAPI 3.0) transferred in the body HTTP.
The generated code uses the name of the schema (here: bodyData) as the name of the input parameter of the generated service method (here: static addDataPerBody({bodyData}).

That is the issue, the controller parses all data in the body of a HTTP request into 'requestParams.body' which won't work for destructuring the assignment to '{bodyData}'.

See 'Suggest a fix' below for a possible fix.

openapi-generator version

Version 4.2.2

OpenAPI declaration file content or url

openapi: 3.0.0
info:
  title: Titel
  description: Some description 
  version: 0.0.0.0
servers:
  - url: /some/uri
paths:
  
  /groups:
    post:
      operationId: addDataPerBody
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/BodyData'
        required: true
      responses:
        '200':
          description: Id of added data.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DataId'
    
components:
  schemas:    
    BodyData:
      type: object
      properties:
        id:
          type: integer
        name:
          type: string
        info:
          type: string
        created:
          type: string
        changed:
          type: string
      required:
        - name
    DataId:
      type: object
      properties:
        id:
          type: integer
          description: ID of the group.

Command line used for generation

openapi-generator generate -g nodejs-express-server -i .\FILE.yaml -o .\TARGET\DIR

Steps to reproduce

Related issues/PRs

Suggest a fix

Every service function parameter simply needs to be identified by 'body' and aliased by the schema name.

For example: Change 'static addDataPerBody({bodyData})' to 'static addDataPerBody({'body': bodyData})'