Query parameter part of request body in controller with MultiPartFile

[Nikos410]

Describe the bug
A controller that consumes a MultipartFile and has a query parameter generates an incorrect spec.

To Reproduce
Steps to reproduce the behavior:

• What version of spring-boot you are using? 2.7.2
• What modules and versions of springdoc-openapi are you using? springdoc-openapi-ui:1.6.10
• What is the actual and the expected result using OpenAPI Description (yml or json)?
  Expected (Generated spec with version 1.5.10):

  "/api/v1/file-upload": {
      "post": {
        "operationId": "uploadFile",
        "parameters": [
          {
            "name": "targetDirectory",
            "in": "query",
            "required": true,
            "schema": {
              "type": "string"
            }
          }
        ],
        "requestBody": {
          "content": {
            "multipart/form-data": {
              "schema": {
                "required": [
                  "file"
                ],
                "type": "object",
                "properties": {
                  "file": {
                    "type": "string",
                    "format": "binary"
                  }
                }
              }
            }
          }
        }
        [...]
      }
    },

  Actual:

    "/api/v1/file-upload": {
      "post": {
        "operationId": "uploadFile",
        "requestBody": {
          "content": {
            "multipart/form-data": {
              "schema": {
                "required": [
                  "file"
                ],
                "type": "object",
                "properties": {
                  "file": {
                    "type": "string",
                    "format": "binary"
                  },
                  "targetDirectory": {}
                }
              }
            }
          }
        }
        [...]
      }
    },

• Provide with a sample code (HelloController) or Test that reproduces the problem

@RestController
@RequestMapping("/api/v1/file-upload")
public class FileUploadController {

	@PostMapping(consumes = {"multipart/form-data"})
	@ResponseStatus(HttpStatus.NO_CONTENT)
	@PreAuthorize(UPLOAD_FILES)
	public void uploadFile(
	        @RequestParam("targetDirectory") String targetDirectory,
	        @RequestParam("file") MultipartFile multipartFile)
	        throws IOException {

	}
}

Expected behavior

• targetDirectory should be a query parameter, not part of the request body

---

CC @Digirik

[bnasslahsen]

@Nikos410,

This is not a bug. But is an expected behavior.
Both representations are correct. A property will be introduced to accept both.

Starting from next release 1.6.11 you can use:

springdoc.default-support-form-data=false