项目初始化：配置文件+项目启动+路由蓝本

README.md

 # first_blog
 
-参考资料：《Flask Web开发：基于Python的Web应用开发实战（第2版）》
+参考资料：《Flask Web开发：基于Python的Web应用开发实战（第2版）》
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+
+启动服务：
+
+1、终端中设置环境变量`$env:FLASK_APP = "flasky.py"`
+
+2、使用flask run启动
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app/__init__.py

@@ -6,3 +6,16 @@
 # Author:       GaoNingNing
 # Date:         2022/11/27
 # -------------------------------------------------------------------------------
+from flask import Flask
+from config import config
+
+
+def create_app(config_name):
+    app = Flask(__name__)
+    app.config.from_object(config[config_name])
+    config[config_name].init_app(app)
+
+    # 添加主路由
+    from .main import main as main_blueprint
+    app.register_blueprint(main_blueprint)
+    return app

app/main/__init__.py

+# -*- coding: utf-8 -*-#
+
+# -------------------------------------------------------------------------------
+# Name:         __init__.py
+# Description:  应用主模块
+# Author:       GaoNingNing
+# Date:         2022/11/27
+# -------------------------------------------------------------------------------
+from flask import Blueprint
+
+#  主蓝本
+main = Blueprint('main', __name__)
+
+from . import views

app/main/views.py

+# -*- coding: utf-8 -*-#
+
+# -------------------------------------------------------------------------------
+# Name:         views
+# Description:  视图函数
+# Author:       GaoNingNing
+# Date:         2022/11/27
+# -------------------------------------------------------------------------------
+from app.main import main
+
+
+@main.route('/')
+def index():
+    return '<h1>Hello World!</h1>'

config.py

@@ -6,3 +6,47 @@
 # Author:       GaoNingNing
 # Date:         2022/11/27
 # -------------------------------------------------------------------------------
+import os
+
+basedir = os.path.abspath(os.path.dirname(__file__))
+
+
+class Config:
+    """
+    配置基类
+    """
+    pass
+
+    @staticmethod
+    def init_app(app):
+        pass
+
+
+class DevelopmentConfig(Config):
+    """
+    开发环境配置
+    """
+    DEBUG = True
+
+
+class TestingConfig(Config):
+    """
+    测试环境配置
+    """
+    TESTING = True
+
+
+class ProductionConfig(Config):
+    """
+    生产环境配置
+    """
+    pass
+
+
+config = {
+    'development': DevelopmentConfig,
+    'testing': TestingConfig,
+    'production': ProductionConfig,
+
+    'default': DevelopmentConfig
+}

first_blog.py

@@ -6,3 +6,8 @@
 # Author:       GaoNingNing
 # Date:         2022/11/27
 # -------------------------------------------------------------------------------
+import os
+
+from app import create_app
+
+app = create_app(os.getenv('FLASK_CONFIG') or 'default')