[BUG][JAVA] Issue generating proper response type for file

[nikhil-ojha-by]

Description

I am using openapi-generator gradle plugin with version "5.2.1" to generate api from openApi spec 3.0.
In one of the endpoint I have to return file as a response (.xls file), I have given the response content-type in openApi spec as shown below:-

/files/template:
    get:
      operationId: abc
      summary: Returns  file in .xls format
      tags:
        - abc
      responses:
        200:
          description: The Contracted Rates Template file
          content:
            application/octet-stream:
              schema:
                type: string
                format: binary

And I want the response type as ResponseEntity<Resource> but instead openApi generator generates ResponseEntity<MultipartFile>
Please help!

openapi-generator version

openapi-generator version -> 5.2.1

OpenAPI declaration file content or url

Generation Details

Steps to reproduce

Related issues/PRs

Suggest a fix

[borsch]

@nikhil-ojha-by could you please specify which .generator & library do you use? You can even post a part of yours build.gradle which configure openapi generator plugin

[adispennette]

This is a pretty old thread but I am having the same issue. I am using the spring kotlin generator with gradle plugin version 7.2.0. I am using the following yaml snippet:

  content:
    application/octet-stream:
      schema:
        type: string
        format: binary

but the generated code is always: fun getFileDownload(fileName: kotlin.String): ResponseEntity<Unit> {

I think the response should be either a BytArray or InputStreamResource or something more usable, but I may just be doing it wrong. Any help would be greatly appreciated.

[adispennette]

Is there any advise on this? Is this a stale issue?