Flask之中间件

from flask import Flask, flash, redirect, render_template, request

app = Flask(__name__)
app.secret_key = 'some_secret'

@app.route('/')
def index1():
    return render_template('index.html')

@app.route('/set')
def index2():
    v = request.args.get('p')
    flash(v)
    return 'ok'

class MiddleWare:
    def __init__(self,wsgi_app):
        self.wsgi_app = wsgi_app

    def __call__(self, *args, **kwargs):

        return self.wsgi_app(*args, **kwargs)

if __name__ == "__main__":
    app.wsgi_app = MiddleWare(app.wsgi_app)
    app.run(port=9999)