使用flask-swagger时，响应主体模型不显示并产生404错误

Question

我正在将flask-swagger设置为一个项目，而该项目是使用flask-restful创建的。它显示了请求正文建模和示例，但未显示响应正文建模和示例，仅显示了描述。我发现它在swagger-ui生成的页面上创建了404错误。这是错误消息的示例。

{
  "messages": [
    "attribute paths.'/users'(get).200.application/json is unexpected"
  ],
  "schemaValidationMessages": [
    {
      "level": "error",
      "domain": "validation",
      "keyword": "additionalProperties",
      "message": "object instance has properties which are not allowed by the schema: [\"description\"]",
      "schema": {
        "loadingURI": "#",
        "pointer": ""
      },
      "instance": {
        "pointer": ""
      }
    }
  ]
}

我想显示响应正文建模和示例。我在下面添加了yaml文件。

class User(Resource)
def get(self):
    """
    get users
    ---
    tags:
      - users
    parameters:
     -in: body
      required:
        -  user_id
      schema:
        properties:
          user_id:
            type: string
            description: user id
     responses:
       200:
         description: ok
         content:
           application/json
             schema:
               type: object
               properties:
                 user_name:
                   type: string
                   description: user name
     """
     example code 
     return jsonify(user_name=username)