DELETE endpoint incorrectly shows request body model in Swagger UI even when no request body exists

[Calil13]

Description:

Hello Swagger UI team,

I have encountered a UI bug in Swagger UI when documenting Spring Boot REST controllers.

When a controller contains multiple operations under the same path prefix — for example:

POST /category (with request body)

PATCH /category/{id} (with request body)

DELETE /category/{id} (no request body)

Swagger UI incorrectly displays a request body schema for the DELETE endpoint, even though the endpoint does not accept any request body in Spring.

This leads Swagger UI to generate an incorrect example, such as:

{
"id": 9007199254740991,
"name": "string",
"subCategory": ["string"]
}

But the real endpoint is:

@DeleteMapping("/category/admin/{id}")
public void deleteCategory(@PathVariable Long id) {
categoryService.deleteCategory(id);
}

Expected behavior:

Swagger UI should not display any request body for DELETE methods unless explicitly defined with @RequestBody.

Actual behavior:

Swagger UI incorrectly displays a JSON request body model inherited from other operations in the controller.

Steps to reproduce:

Create a Spring Boot controller containing both POST/PATCH with request body and DELETE without body:

@RestController
@RequestMapping("/category")
public class CategoryController {

@PostMapping
public void create(@RequestBody CategoryDto dto) { }

@PatchMapping("/{id}")
public void update(@PathVariable Long id, @RequestBody CategoryDto dto) { }

@DeleteMapping("/{id}")
public void delete(@PathVariable Long id) { }

}

Open Swagger UI

Observe that the DELETE operation shows a request body model even though none is defined.

Environment:

Spring Boot 3.x

springdoc-openapi-starter-webmvc-ui 2.x

Java 17+

Swagger UI version bundled with springdoc

Additional info:

This seems to be a rendering issue in Swagger UI, not in OpenAPI itself.
Postman and other tools correctly show that DELETE does not have a request body.

A fix for ignoring inherited schemas for DELETE operations would be appreciated.

Thanks!