标签：获取 world htm sim host flask学习 扩展性 mit flask
1、短小精悍、可扩展性强 的一个web框架
注意：上下文管理机制
2、依赖wsgi:werkzurg
from werkzeug.wrappers import Request, Response @Request.application def hello(request): return Response(‘Hello World!‘) if __name__ == ‘__main__‘: from werkzeug.serving import run_simple run_simple(‘localhost‘, 4000, hello)
注意__init__和__call__的区别：
class Foo(): def __init__(self): print(‘init‘) def __call__(self, *args, **kwargs): print(‘call‘) a = Foo() a() #init #call
一个简单的flask代码
from flask import Flask app = Flask(__name__)
@app.route(‘/index‘) def index(): return ‘hello world‘ if __name__ == ‘__main__‘: app.run(‘local
1、template可以类似django修改
2、static有两种方式，
A: a、 static_folder="staticccc" b、将static文件夹命名为 staticccc c、img引用的时候用staticccc/xxxxx
B: a、 static_url_path=‘/vvvvv‘ b、 img引用的时候用 /vvvvv/xxxxx
from flask import Flask,render_template,request,redirect,session # app = Flask(__name__,template_folder="templates",static_folder="staticccc",static_url_path=‘/vvvvv‘) app = Flask(__name__,template_folder="templates",static_folder="static") app.secret_key = ‘asdfasdf‘ @app.route(‘/login‘,methods=["GET","POST"]) def login(): if request.method == ‘GET‘: return render_template(‘login.html‘)
# request.args 获取的是get的信息 user = request.form.get(‘user‘) #获取的是post的信息 pwd = request.form.get(‘pwd‘) if user == ‘oldboy‘ and pwd == ‘666‘: session[‘user‘] = user return redirect(‘/index‘) return render_template(‘login.html‘,error=‘用户名或密码错误‘) # return render_template(‘login.html‘,**{"error":‘用户名或密码错误‘}) @app.route(‘/index‘) def index(): user = session.get(‘user‘) if not user: return redirect(‘/login‘) return render_template(‘index.html‘) if __name__ == ‘__main__‘: app.run()
index.html
<body>
<h1>欢迎使用</h1>
<img src="/static/111.png" alt="">
</body>
login.html
<body>
<h1>用户登录</h1>
<form method="post">
<input type="text" name="user">
<input type="password" name="pwd">
<input type="submit" value="提交">{{error}}
</form>
</body>
标签：获取 world htm sim host flask学习 扩展性 mit flask
原文地址：https://www.cnblogs.com/di2wu/p/10205468.html
