问OpenAPI规范说“application/x form-urlencoded”，但是生成的spring引导需要多部分/表单数据或多部分/混合流。

EN

                                <!-- generates single interface to implement -->
                                <useTags>true</useTags>

                                <withXml>true</withXml>
                                <title>${project.artifactId}</title>

                                <performBeanValidation>true</performBeanValidation>
                                <useBeanValidation>true</useBeanValidation>
                                <useOptional>true</useOptional>
                                <useSpringController>false</useSpringController>

                                <returnSuccessCode>false</returnSuccessCode>

                                <useAbstractionForFiles>true</useAbstractionForFiles>

                                <!-- Our own delegates can be autowired into the generated sources -->
                                <delegatePattern>true</delegatePattern>

post:
  description: Add products to shopping cart.
  operationId: api.cart.add_product

  requestBody:
    required: true
    content:
      'application/x-www-form-urlencoded':
        schema:
          type: object
          properties:
            quantity:
              type: integer
              example: 1
            product_code:
              type: string
              example: elephant
          required:
            - quantity
            - product_code
        examples:
          add_an_elephant:
            summary: How to add a single elephant to the shopping cart
            value:
              product_code: elephant
              quantity: 1
  
  responses:
    '204':
      description: Product added to cart.
    '400':
      description: Cannot add product to cart.
    '422':
      description: Unknown product code.

    @RequestMapping(
        method = RequestMethod.POST,
        value = "/cart/add",
        consumes = { "application/x-www-form-urlencoded" }
    )
    default ResponseEntity<Void> apiCartAddProduct(
        @Parameter(name = "quantity", description = "", required = true, schema = @Schema(description = "")) @Valid @RequestPart(value = "quantity", required = true) Integer quantity,
        @Parameter(name = "product_code", description = "", required = true, schema = @Schema(description = "")) @Valid @RequestPart(value = "product_code", required = true) String productCode
    ) {
        return getDelegate().apiCartAddProduct(quantity, productCode);
    }

    @Override
    public ResponseEntity<Void> apiCartAddProduct(Integer quantity, String productCode) {
        var product = products.stream().filter(p -> p.getCode().equals(productCode)).findFirst().get();
        CartEntry price = new CartEntry().product(product).price(product.getPrice()).quantity(quantity).price(product.getPrice() * quantity);
        cart.add(price);
        return new ResponseEntity<Void>((Void) null, HttpStatus.OK);
    }

org.apache.tomcat.util.http.fileupload.impl.InvalidContentTypeException: the request doesn't contain a multipart/form-data or multipart/mixed stream, content type header is application/x-www-form-urlencoded
    at org.apache.tomcat.util.http.fileupload.impl.FileItemIteratorImpl.init(FileItemIteratorImpl.java:151) ~[tomcat-embed-core-9.0.56.jar:9.0.56]
    at org.apache.tomcat.util.http.fileupload.impl.FileItemIteratorImpl.getMultiPartStream(FileItemIteratorImpl.java:205) ~[tomcat-embed-core-9.0.56.jar:9.0.56]