标签：rgs orm 注意 准备 lse 现在 tran mic python3
参考教程链接：
1.https://dormousehole.readthedocs.io/en/latest/
2.https://www.w3cschool.cn/flask/
前提准备：anaconda（python3），pycharm
from flask import Flask app = Flask(__name__) @app.route(‘/‘) def hello_world(): return ‘Hello World’ if __name__ == ‘__main__‘: app.run()
解释：
1.@app.route(‘/‘)说明了下面的hello_world()函数与url‘/‘绑定(http://127.0.0.1:5000/)
运行该hello.py，点击pycharm下的链接http://127.0.0.1:5000/，即会显示字符串Hello World
2.@app.route(‘/hello’)则绑定http：//localhost：5000/hello
二、从url名字传递参数（@app.route(‘/hello/<name>‘)
from flask import Flask app = Flask(__name__) @app.route(‘/hello/<name>‘) def hello_name(name): return ‘Hello %s!‘ % name if __name__ == ‘__main__‘: app.run(debug = True)
输入链接：http:// localhost:5000/hello/Jack
将会显示： Hello Jack！
参考：https://www.w3cschool.cn/flask/flask_variable_rules.html
三、url重定向（return redirect(url_for(‘hello_admin‘))）
url_for（‘‘） #重定向到另外一个函数
from flask import Flask, redirect, url_for app = Flask(__name__) @app.route(‘/admin‘) def hello_admin(): return ‘Hello Admin‘ @app.route(‘/guest/<guest>‘) def hello_guest(guest): return ‘Hello %s as Guest‘ % guest @app.route(‘/user/<name>‘) def hello_user(name): if name ==‘admin‘: return redirect(url_for(‘hello_admin‘)) else: return redirect(url_for(‘hello_guest‘,guest = name)) if __name__ == ‘__main__‘: app.run(debug = True)
打开浏览器并输入URL - http://localhost:5000/user/admin
浏览器中的应用程序响应是：
Hello Admin
在浏览器中输入以下URL - http://localhost:5000/user/mvl
应用程序响应现在更改为：
Hel
lo mvl as Guest
四、结合html和post和get
将以下脚本另存为login.html
<html> <body> <form action = "http://localhost:5000/login" method = "post"> <p>Enter Name:</p> <p><input type = "text" name = "nm" /></p> <p><input type = "submit" value = "submit" /></p> </form> </body> </html>
hello.py如下：
from flask import Flask, redirect, url_for, request app = Flask(__name__) @app.route(‘/success/<name>‘) def success(name): return ‘welcome %s‘ % name @app.route(‘/login‘,methods = [‘POST‘, ‘GET‘]) def login(): if request.method == ‘POST‘: user = request.form[‘nm‘] return redirect(url_for(‘success‘,name = user)) else: user = request.args.get(‘nm‘) return redirect(url_for(‘success‘,name = user)) if __name__ == ‘__main__‘: app.run(debug = True)
注意到，form表单method是post，input框的name是‘nm‘
<p><input type = "text" name = "nm" /></p>
在本地打开文件login.html
summit以后，网页自动跳转到‘/ success‘ URL，显示：welcome mvl
标签：rgs orm 注意 准备 lse 现在 tran mic python3
原文地址：https://www.cnblogs.com/qiezi-online/p/12859820.html
