Tornado模块划分

àì夳堔傛蜴生んèń 2022-12-02 01:00 163阅读 0赞

### Tornado模块划分 ###

*  目录
 *  步骤
 *   *  配置settings.py
     *  模型类 models.py
     *  视图类 views.py
     *  路由 urls.py
     *  创建application 对象 app.py
     *  启动项目 manage.py

# 目录 #

![在这里插入图片描述][20200828200123450.png_pic_center]

# 步骤 #

## 配置settings.py ##

import os
    # 1. 数据库的配置
    BASE_DIR = os.path.abspath(os.path.dirname(__file__))
    path = 'sqlite:///' + os.path.join(BASE_DIR, 'sqlite3.db')
    
    # 2.tornado 参数的配置
    tornado_config = { 
        'template_path': 'templates',
        'static_path': 'static',
        'static_url_prefix': '/static/'
    }

## 模型类 models.py ##

import sqlalchemy
    from sqlalchemy.orm import sessionmaker
    from sqlalchemy.ext.declarative import declarative_base
    
    from settings import path
    
    engine=sqlalchemy.create_engine(path,encoding='utf-8', echo=True)
    Base=declarative_base(bind=engine)
    
    # 创建session对象
    Session=sessionmaker(bind=engine)
    session=Session()
    class BaseModel(Base):
        __abstract__=True
        id = sqlalchemy.Column(sqlalchemy.Integer, primary_key=True, autoincrement=True)
        def save(self):
            session.add(self)
            session.commit()
        def update(self):
            session.commit()
        def delete(self):
            session.delete()
            session.commit()
    class Car(BaseModel):
        __tablename__='car'
        c_name=sqlalchemy.Column(sqlalchemy.String(32))
        c_price=sqlalchemy.Column(sqlalchemy.Integer)
    
    if __name__ == '__main__':
            Base.metadata.create_all()

## 视图类 views.py ##

import tornado.web
    from models import *
    
    
    class IndexHandler(tornado.web.RequestHandler):
        def get(self):
            pass

## 路由 urls.py ##

from views import *
    
    urlpatterns = [
        (r'/index/', IndexHandler),
    ]

## 创建application 对象 app.py ##

from settings import tornado_config
    from urls import urlpatterns
    import tornado.web
    
    def make_app():
        app = tornado.web.Application(
            urlpatterns,
            **tornado_config
        )
    
        return app

## 启动项目 manage.py ##

import tornado.ioloop
    
    from app import make_app
    from models import *
    
    if __name__ == '__main__':
        # 创建数据库
        Base.metadata.create_all()
        # 监听端口
        app = make_app()
        app.listen(8888)
        # 启动
        tornado.ioloop.IOLoop.current().start()

[20200828200123450.png_pic_center]: /images/20221123/fba2b48e9fa248d18f9757b54982ff1d.png