如何使用相同方法spring boot Rest支持multipart/form-data和application/json

@PostMapping("/upload")
public String uploadFile(@RequestParam("file") MultipartFile file, @RequestParam("data") String data) {
    // 上传文件逻辑
    // 解析json数据逻辑
    return "success";
}

@PostMapping("/upload")
public String uploadFile(@RequestPart("file") MultipartFile file, @RequestPart("data") String data) {
    // 上传文件逻辑
    // 解析json数据逻辑
    return "success";
}

@Configuration
public class WebMvcConfig extends WebMvcConfigurerAdapter {
    
    @Override
    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        converters.add(new MyHttpMessageConverter());
        super.configureMessageConverters(converters);
    }
}

public class MyHttpMessageConverter extends AbstractHttpMessageConverter<Object> {

    public MyHttpMessageConverter() {
        super(MediaType.ALL);
    }

    @Override
    protected boolean supports(Class<?> clazz) {
        return true;
    }

    @Override
    protected Object readInternal(Class<?> clazz, HttpInputMessage inputMessage) throws IOException, HttpMessageNotReadableException {
        // 解析请求参数逻辑
        return null;
    }

    @Override
    protected void writeInternal(Object o, HttpOutputMessage outputMessage) throws IOException, HttpMessageNotWritableException {
        // 处理响应逻辑
    }
}

@PostMapping("/upload")
public String uploadFile(@RequestBody Object requestData) {
    // 解析请求参数逻辑
    return "success";
}