flask_restplus:无法使flask_swagger_ui与命名空间一起工作

from flask import Flask
from flask_restplus import Api, Namespace, Resource
from flask_swagger_ui import get_swaggerui_blueprint

app = Flask(__name__)
api = Api(app)

ns = Namespace('your_namespace', description='Your namespace description')

api.add_namespace(ns)

SWAGGER_URL = '/swagger'  # Swagger UI的URL前缀
API_URL = '/swagger.json'  # API定义文件的URL
swaggerui_blueprint = get_swaggerui_blueprint(SWAGGER_URL, API_URL)
app.register_blueprint(swaggerui_blueprint, url_prefix=SWAGGER_URL)

@ns.route('/your_route')
class YourResource(Resource):
    def get(self):
        # 处理GET请求的逻辑
        pass