$ git checkout v0.1
一个最简单的 demo：
# -*- coding: utf-8 -*-
from flask import Flask
app = Flask(__name__)
@app.route("/")
def index():
return "Hello World!"
if __name__ == "__main__":
app.run(host='127.0.0.1', port=5200, debug=True)$ git checkout v0.2
# -*- coding: utf-8 -*-
from flask import Flask, request, redirect, url_for
app = Flask(__name__)
app.secret_key = 'some secret key'
books = ['the first book', 'the second book', 'the third book']
@app.route("/")
def index():
render_string = '<ul>'
for book in books:
render_string = '<li>' book '</li>'
render_string = '</ul>'
return render_string
@app.route("/book", methods=['POST', 'GET'])
def book():
_form = request.form
if request.method == 'POST':
title = _form["title"]
books.append(title)
return redirect(url_for('index'))
return '''
<form name="book" action="/book" method="post">
<input id="title" name="title" type="text" placeholder="add book">
<button type="submit">Submit</button>
</form>
'''
if __name__ == "__main__":
app.run(host='127.0.0.1', port=5200, debug=True)$ git checkout v0.3
加入蓝图功能，代码结构如下：
flask-demos
├── README.md
├── app.py
├── book
│ ├── __init__.py
│ └── book.py
├── movie
│ ├── __init__.py
│ └── movie.py
└── templates
├── 404.html
├── book.html
├── layout.html
└── movie.html
通过 python app.py 运行。
$ git checkout v0.3
加入密码和 token 认证，只有登录成功的用户才可以提交书籍，其中，token 认证可使用命令行 curl 测试。
# 密码认证
curl -i -u ethan:6667 -d "title=mybook" -X POST http://127.0.0.1:5200/book
# token 认证
curl -i -u token:x -d "title=threee" -X POST http://127.0.0.1:5200/book$ git checkout v0.5
采用工厂方法 creat_app() 创建 app 对象。
代码结构如下：
.
├── app.py
├── book
│ ├── __init__.py
│ └── book.py
├── configs.py
├── movie
│ ├── __init__.py
│ └── movie.py
├── requirements.txt
├── run.py
└── templates
├── 404.html
├── book.html
├── layout.html
└── movie.html
运行：
$ python run.py