OpenApi - 有没有办法在用 springdoc-openapi-maven-plugin 生成的合同中有一个带有鉴别器部分的组合模式?

OpenApi - Is there a way to have a ComposedSchema with a discriminator part in a contract generated with springdoc-openapi-maven-plugin?

我有一个示例 SpringBoot API 具有以下功能:

我尝试使用 springdoc-openapi-maven-plugin.

从这个 API 生成一个 OpenApi 合约

在我的pom.xml中,我有以下元素:

这是我的 classes 我从中生成架构。

import io.swagger.v3.oas.annotations.media.ArraySchema;
import io.swagger.v3.oas.annotations.media.Schema;

public class ContainerClass {

    @ArraySchema(
        arraySchema = @Schema(discriminatorProperty = "classType"), 
        schema = @Schema(implementation = ParentClass.class)
    )
    public List<ParentClass> elements;
    
    // + Getter/Setter
}
@JsonTypeInfo(
        use = JsonTypeInfo.Id.NAME,
        include = JsonTypeInfo.As.EXISTING_PROPERTY,
        property = "classType",
        defaultImpl = ParentClass.class,
        visible = true)
@JsonSubTypes({
        @JsonSubTypes.Type(value = ChildA.class, name = "CHILD_A"),
        @JsonSubTypes.Type(value = ChildB.class, name = "CHILD_B")})
@Schema(
        description = "Parent description",
        discriminatorProperty = "classType",
        discriminatorMapping = {
                @DiscriminatorMapping(value = "CHILD_A", schema = ChildA.class),
                @DiscriminatorMapping(value = "CHILD_B", schema = ChildB.class)
        }
)
public abstract class ParentClass {

    public String classType;

    // + Getter/Setter
}
@io.swagger.v3.oas.annotations.media.Schema(description = " Child A", allOf = ParentClass.class)
public class ChildA extends ParentClass{
}
@io.swagger.v3.oas.annotations.media.Schema(description = " Child B", allOf = ParentClass.class)
public class ChildB extends ParentClass{
}

当我运行springdoc-openapi-maven-plugin时,我得到如下合约文件

openapi: 3.0.1
info:
  title: OpenAPI definition
  version: v0
servers:
- url: http://localhost:8080
  description: Generated server url
paths:
  /container:
    get:
      tags:
      - hello-controller
      operationId: listElements
      responses:
        "200":
          description: OK
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/ContainerClass'
components:
  schemas:
    ChildA:
      type: object
      description: ' Child A'
      allOf:
      - $ref: '#/components/schemas/ParentClass'
    ChildB:
      type: object
      description: ' Child B'
      allOf:
      - $ref: '#/components/schemas/ParentClass'
    ContainerClass:
      type: object
      properties:
        elements:
          type: array
          description: array schema description
          items:
            oneOf:
            - $ref: '#/components/schemas/ChildA'
            - $ref: '#/components/schemas/ChildB'
    ParentClass:
      type: object
      properties:
        classType:
          type: string
      description: Parent description
      discriminator:
        propertyName: classType
        mapping:
          CHILD_A: '#/components/schemas/ChildA'
          CHILD_B: '#/components/schemas/ChildB'

实际上,在我的上下文中,为了不与现有消费者发生任何重大变化,我需要 items 属性 in ContainerClass 模式包含 鉴别器 部分,该部分包含在 ParentClass 模式中,如下所示:

ContainerClass:
  type: object
  properties:
    elements:
      type: array
      description: array schema description
      items:
        discriminator:
          propertyName: classType
          mapping:
            CHILD_A: '#/components/schemas/ChildA'
            CHILD_B: '#/components/schemas/ChildB'
        oneOf:
        - $ref: '#/components/schemas/ChildA'
        - $ref: '#/components/schemas/ChildB'

当我尝试在注释中设置属性时,我无法做到这一点。当我调试 io.swagger.v3.core.jackson.ModelResolver 的代码时,我无法找到一种方法来做到这一点。 到目前为止,我还没有找到对我有帮助的代码示例。

有没有办法让 ComposedSchema(在我的例子中包含在 ContainerClass 中的数组)有一个由 [= 生成的 disciminator 部分32=]springdoc-openapi-maven-plugin执行?

这是默认生成结构。由 swagger-api 直接处理(而不是 springdoc-openapi.

生成的 OpenAPI 描述看起来很正确。

使用springdoc-openapi,可以定义一个OpenApiCustomiser Bean,在这里可以更改定义在OpenAPI层面的components元素的元素:

这是我通过定义 OpenApiCustomiser Bean 的解决方案:

@Bean
    public OpenApiCustomiser myCustomiser() {

        Map<String, String> classTypeMapping = Map.ofEntries(
                new AbstractMap.SimpleEntry<String, String>("CHILD_A", "#/components/schemas/ChildA"),
                new AbstractMap.SimpleEntry<String, String>("CHILD_B", "#/components/schemas/ChildB")
        );

        Discriminator classTypeDiscriminator = new Discriminator().propertyName("classType")
                                                        .mapping(classTypeMapping);

        return openApi -> openApi.getComponents().getSchemas().values()
                                .stream()
                                .filter(schema -> "ContainerClass".equals(schema.getName()))
                                .map(schema -> schema.getProperties().get("elements"))
                                .forEach(arraySchema -> ((ArraySchema)arraySchema).getItems().discriminator(classTypeDiscriminator));
    }

我在合同文件中得到了预期的结果。