1.__init__.py文件界面（再此声明，完全是个人问题，一般__init__.py不能这样用）
#__init__.py文件
from flask import Flask
app = Flask(__name__)
debug = True
import apps.view
2.view.py文件
#view.py界面
from flask import render_template, request, redirect, session
from apps import app
@app.route('/')
def index():
return render_template("index.html")
@app.route('/regist', methods=["POST","GET"])
def regist():
return render_template("user_regist.html")
3.app.py(运行)
from apps import app
if __name__ == '__main__':
app.run()
接下来是HTML文件，用了模板渲染
1.公用模板（layout.html）用了JS,CSS渲染
<html lang="zh-CN">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- 上述3个meta标签*必须*放在最前面，任何其他内容都*必须*跟随其后！ -->
<title>flask_web_regist</title>
<!-- Bootstrap -->
<link href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap.min.css" rel="stylesheet">
{% block css_style %}
{% endblock %}
</head>
<body>
<div class="container">
<!-- Static navbar -->
<nav class="navbar navbar-default">
<div class="container-fluid">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar"
aria-expanded="false" aria-controls="navbar">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="{{ url_for('index') }}">flask_web_regist</a>
</div>
<div id="navbar" class="navbar-collapse collapse">
<ul class="nav navbar-nav navbar-right">
<li id="nav-4"><a href="#">login</a></li>
<li id="nav-5"><a href="{{ url_for("regist") }}">regist</a></li>
</ul>
</div><!--/.nav-collapse -->
</div><!--/.container-fluid -->
</nav>
{% block content %}
{% endblock %}
</div> <!-- /container -->
<div class="container">
</div> <!-- /container -->
<!-- jQuery (Bootstrap 的所有 JavaScript 插件都依赖 jQuery，所以必须放在前边) -->
<script src="https://cdn.jsdelivr.net/npm/jquery@1.12.4/dist/jquery.min.js"></script>
<!-- 加载 Bootstrap 的所有 JavaScript 插件。你也可以根据需要只加载单个插件。 -->
<script src="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/js/bootstrap.min.js"></script>
{% block js_code %}
{% endblock %}
</body>
</html>
2.主页面（index.html）
{% extends "layout.html" %}
{% block content %}
<head>
</head>
<body>
<h1>flask_web</h1>
</body>
</html>
{% endblock %}
3.注册页面（regist.html）
{% extends "layout.html" %}
{% block content %}
<head>
</head>
<body>
<div class="container col-md-4" >
<form role="form" method="post">
<div class="form-group">
<label for="user_name">用户名</label>
<input type="text" id=user_name name="user_name " class="form-control">
</div>
<div class="form-group">
<label for="user_pwd">用户密码</label>
<input type="password" id=user_pwd name="user_pwd " class="form-control">
</div>
<div class="form-group">
<label for="user_bir">用户生日</label>
<input type="date" id=user_bir name="user_bir " class="form-control">
</div>
<div class="form-group">
<label for="user_mail">用户邮箱</label>
<input type="email" id=user_mail name="user_mail " class="form-control">
</div>
<div class="form-group">
<label for="user_phone">用户电话</label>
<input type="number" id=user_phone name="user_phone " class="form-control">
</div>
<div class="form-group">
<label for="user_jianjie">用户简介</label>
<input type="text" id=user_jianjie name="user_jianjie " row="3" class="form-control">
</div>
<div class="form-group">
<input type="submit" class="btn btn-success" name="submit " value="提交表单">
</div>
</form>
</div>
</body>
</html>
{% endblock %}
