A rookie for flask----1(login)

一个最基本的登陆注册方式

login.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <h1>用户登录</h1>
    <form method="post">
        <input type="text" name="user">
        <input type="text" name="pwd">
        <input type="submit" value="登陆">{{error}}
    </form>
</body>
</html>

index.py

# render_template是模板渲染,例如在开发flask项目中,我们会有一个templates文件夹,里面存放一些html文件,
# 这些文件会在视图函数中被渲染,此时就会用到render_template包
from flask import Flask, render_template, request, redirect

app = Flask(__name__)


@app.route('/login', methods=['GET', 'POST'])  # @app.route()是thedecorator是装饰器功能
def index():
    if request.method == 'GET':
        return render_template('login.html')
    else:
        user = request.form.get('user')
        pwd = request.form.get('pwd')
        if user == 'xiaoyuyu' and pwd == 'woaini':
            return redirect('https://blog.csdn.net/qq_42192672')
        else:
            return render_template('login.html', error='wrong usernmae or password')


if __name__ == '__main__':
    app.run()

都是flask的基础语法,比较难理解的就是修饰器吧,但是直接拿来用还算OK

看一下效果

如果输入错误,会报错;用户名密码正确会跳转到博客首页

很简单吧,嘻嘻

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转载自blog.csdn.net/qq_42192672/article/details/84986412