python的web框架webpy【session & cookie】五
程序员文章站
2024-01-07 14:24:22
...
webpty中使用session非常简单
import web web.config.debug = False urls = ( "/count", "count", "/reset", "reset" ) app = web.application(urls, locals()) session = web.session.Session(app, web.session.DiskStore('sessions'), initializer={'count': 0}) class count: def GET(self): session.count += 1 return str(session.count) class reset: def GET(self): session.kill() return "" if __name__ == "__main__": app.run()
initializer
指定session的初始化值
web.session.DiskStore('sessions') #设置session的存储方式为磁盘
我们也可以指定session存储在数据库中
db = web.database(dbn='postgres', db='mydatabase', user='myname', pw='') store = web.session.DBStore(db, 'sessions') session = web.session.Session(app, store, initializer={'count': 0})
表结构
create table sessions ( session_id char(128) UNIQUE NOT NULL, atime timestamp NOT NULL default current_timestamp, data text );
我们可以通过web.config对session进行一些可选设置
web.config.session_parameters['cookie_name'] = 'webpy_session_id' web.config.session_parameters['cookie_domain'] = None web.config.session_parameters['timeout'] = 86400, #24 * 60 * 60, # 24 hours in seconds web.config.session_parameters['ignore_expiry'] = True web.config.session_parameters['ignore_change_ip'] = True web.config.session_parameters['secret_key'] = 'fLjUfxqXtfNoIldA0A0J' web.config.session_parameters['expired_message'] = 'Session expired'
webpy中使用cookie
setcookie(name, value, expires="", domain=None, secure=False): cookie_name - session id 存储在cookie中的名称 cookie_domain - cookie的domain timeout - session 过期时间,单位为秒 ignore_expiry -如果设置为True则忽略过期时间 ignore_change_ip - 如果为False则来自同一ip则session才有效 secret_key - session id的hash值 expired_message - session 失效后显示的信息
设置cookie
web.setcookie('age', i.age, 3600)
读取cookie
web.cookies().get(cookieName)