python - flask 启动后接受不到请求

Question

flask 启动后接受不到请求(postman: Could not get any response
There was an error connecting to http://...:...

代码结构:

server/
       run.py
       server/
              __init__.py
              log.py
              views/
                    __init__.py
                    container.py

run.py：

from docker_server import app
if __name__ == '__main__':
    app.run(port=8082, debug=True)

__init__.py under server dir:

from flask import Flask
app = Flask(__name__)
from server.views import container
app.register_blueprint(container.mod)

container.py:

mod = Blueprint('container', __name__, url_prefix='/container')
@mod.route("/", methods=['GET'])
def container_test():
    logger.debug("container test")
    return None

stackoverflow上也提过：

http://stackoverflow.com/ques...

Answer 1

The directory where you are creating mod的时候指定了url_prefix='/container',访问的时候这样看看http：//localhost:8082/container/。而且使用蓝图的时候还要指定views, example of the official website (if specified, this blueprint may not be found):

from flask import Blueprint, render_template, abort
from jinja2 import TemplateNotFound

simple_page = Blueprint('simple_page', __name__,
                        template_folder='templates')

@simple_page.route('/', defaults={'page': 'index'})
@simple_page.route('/<page>')
def show(page):
    try:
        return render_template('pages/%s.html' % page)
    except TemplateNotFound:
        abort(404)

In addition, the blueprint recommends using it like this:

app/
    your_blueprint/
        __init__.py
        views.py
    __init__.py
    

app/__init__/py:

from flask import Flask
def create_app():
    app = Flask(__name__)
    
    from .your_blueprint import your_blueprint as main_blueprint
    app.register_blueprint(main_blueprint)
    return app
    

app/your_blueprint/__init__.py:

from flask import Blueprint

main  = Blueprint('main', __name__)

from . import views

Answer 2

Are you accessing it on the machine running flask? If not, it must be inaccessible according to your code. Just like the answer in stackoverflow, if you want to access from other machines, you need to configure a startup parameter, otherwise flask will only listen to requests on 127.0.0.1 by default.