2022-03-21

2022-03-21 本文已影响0人 pr_小彭友

基础教程： https://www.w3cschool.cn/flask/

官网教程：https://flask.net.cn/tutorial/index.html

学习博客：https://blog.csdn.net/weixin_45950544/article/details/104067405

常用扩展包

Flask-SQLalchemy：操作数据库；

Flask-script：插入脚本；

Flask-migrate：管理迁移数据库；

Flask-Session：Session存储方式指定；

Flask-WTF：表单；

Flask-Mail：邮件；

Flask-Bable：提供国际化和本地化支持，翻译；

Flask-Login：认证用户状态；

Flask-OpenID：认证；

Flask-RESTful：开发REST API的工具；

Flask-Bootstrap：集成前端Twitter Bootstrap框架；

Flask-Moment：本地化日期和时间；

Flask-Admin：简单而可扩展的管理接口的框架

Flask 的扩展通常命名为“ Flask-Foo ”或者“ Foo-Flask ” 。可以在 PyPI 搜索标记为 Framework :: Flask 扩展包。

Flask-SQLalchemy

1.配置：https://flask-sqlalchemy.palletsprojects.com/en/2.x/config/

2.使用命令自动生成model

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<pre class=" CodeMirror-line " role="presentation">pip install flask-sqlacodegen</pre>

<pre class=" CodeMirror-line " role="presentation">flask-sqlacodegen "mysql+pymysql://用户名:密码@host:port/数据库" --tables 表 --outfile "导出地址" --flask</pre>

学习播客：

https://blog.csdn.net/LYLLOAD/article/details/81664322

https://www.jianshu.com/p/f7ba338016b8

Flask-RESTful

学习博客：

https://www.cnblogs.com/donghaoblogs/p/10389696.html

http://www.pythondoc.com/Flask-RESTful/quickstart.html

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<pre class=" CodeMirror-line " role="presentation"># flask-restful + blueprint开发流程</pre>

<pre class=" CodeMirror-line " role="presentation"># 步骤1：创建app</pre>

<pre class=" CodeMirror-line " role="presentation">app = Flask(name)</pre>

<pre class=" CodeMirror-line " role="presentation">blueprint = Blueprint('api', name)</pre>

<pre class=" CodeMirror-line " role="presentation"># 步骤3：创建api</pre>

<pre class=" CodeMirror-line " role="presentation">api = Api(blueprint)</pre>

<pre class=" CodeMirror-line " role="presentation">app.register_blueprint(blueprint)</pre>

<pre class=" CodeMirror-line " role="presentation">api.add_resource(DemoView, '/')</pre>

注意：

Blueprint 并不是一个完整的应用，它不能独立于应用运行，而必须要注册到某一个应用中。

注册的顺序是先将蓝图绑定到 api 中，这时 api 既有自身的功能，还有蓝图的功能，这是创建 api，蓝图还需要注册到 app 中，最后使用 api 进行路由注册

注册蓝图和路由的顺序不能反，因为蓝图绑定到 api 中了

常用钩子函数

学习博客：

https://blog.csdn.net/T_I_A_N_/article/details/100086143

蓝图

学习博客：https://zhuanlan.zhihu.com/p/357444025

Flask工厂函数

学习博客：https://www.jianshu.com/p/fb6e85c8a3c1

Flask配置

https://zhuanlan.zhihu.com/p/24055329

1.内置配置：https://flask.net.cn/config.html https://www.cnblogs.com/songzhixue/p/11171458.html

2.扩展库配置

a.flask_sqlalchemy：http://www.pythondoc.com/flask-sqlalchemy/config.html

Flask开发流程

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<pre class=" CodeMirror-line " role="presentation">from flask import Flask</pre>

<pre class=" CodeMirror-line " role="presentation">from config import Config</pre>

<pre class=" CodeMirror-line " role="presentation">from flask_sqlalchemy import SQLAlchemy</pre>

<pre class=" CodeMirror-line " role="presentation">db = SQLAlchemy()</pre>

<pre class=" CodeMirror-line " role="presentation"># 步骤1：自定义工厂函数</pre>

<pre class=" CodeMirror-line " role="presentation">def create_app()</pre>

<pre class=" CodeMirror-line " role="presentation"> app = Flask(name)</pre>

<pre class=" CodeMirror-line " role="presentation"> # 加载配置文件</pre>

<pre class=" CodeMirror-line " role="presentation"> app.config.from_object(Config)</pre>

<pre class=" CodeMirror-line " role="presentation"> # 初始化各种扩展库</pre>

<pre class=" CodeMirror-line " role="presentation"> from app.routes import main_routes</pre>

<pre class=" CodeMirror-line " role="presentation"> app.register_blueprint(main_routes)</pre>

<pre class=" CodeMirror-line " role="presentation"> return app</pre>

<pre class=" CodeMirror-line " role="presentation"># 步骤2：使用flask-restful + blueprint开发接口</pre>

<pre class=" CodeMirror-line " role="presentation"># 定义路由：将视图函数（view）绑定到url</pre>

<pre class=" CodeMirror-line " role="presentation">from flask import Blueprint</pre>

<pre class=" CodeMirror-line " role="presentation">from flask_restful import Api</pre>

<pre class=" CodeMirror-line " role="presentation">from . import view</pre>

<pre class=" CodeMirror-line " role="presentation">bp = Blueprint('hello_world', name, url_prefix='/hello_world')</pre>

<pre class=" CodeMirror-line " role="presentation"># 创建api</pre>

<pre class=" CodeMirror-line " role="presentation">api.add_resource(DemoView, '/')</pre>

<pre class=" CodeMirror-line " role="presentation"># 步骤3：编写view函数</pre>

<pre class=" CodeMirror-line " role="presentation">class DemoView(Resource):</pre>

<pre class=" CodeMirror-line " role="presentation"> return 'hello world'</pre>