为什么页面不显示在气流中？

如何解决为什么页面不显示在气流中？

我刚刚开始学习Airflow的插件。我想制作一个测试页，我使用了文档中的代码：

from airflow.plugins_manager import AirflowPlugin

from flask import Blueprint
from flask_admin import BaseView,expose
from flask_admin.base import MenuLink

# Importing base classes that we need to derive
from airflow.hooks.base_hook import BaseHook
from airflow.models import BaseOperator
from airflow.executors.base_executor import BaseExecutor


# Will show up under airflow.macros.test_plugin.plugin_macro
def plugin_macro():
    pass


# Creating a flask admin BaseView
class TestView(BaseView):
    @expose('/test_plugin')
    def test(self):
        # in this example,put your test_plugin/test.html template at airflow/plugins/templates/test_plugin/test.html
        return self.render("test_plugin/test.html",content="Hello galaxy!")


v = TestView(category="Test Plugin",name="Test View")

# Creating a flask blueprint to intergrate the templates and static folder
bp = Blueprint(
    "test_plugin",__name__,template_folder='templates',# registers airflow/plugins/templates as a Jinja template folder
    static_folder='static',static_url_path='/static/test_plugin')

ml = MenuLink(
    category='Test Plugin',name='Test Menu Link',url='http://pythonhosted.org/airflow/')


# Defining the plugin class
class AirflowTestPlugin(AirflowPlugin):
    name = "test_plugin"
    macros = [plugin_macro]
    admin_views = [v]
    flask_blueprints = [bp]
    menu_links = [ml]

文件夹结构：

airflow
|_plugins
  |_templates
  | |_test_plugin
  |   |_test.html     
  |_static
  | |_test_plugin
  |
  |_test_plugin
    |_test_plugin.py

我转到“ http：// someurl / test_plugin”并获取404。如何在代码中正确指定url并获取页面？