flask-session是flask框架的session組件,因爲原來flask內置session使用簽名cookie保存,該組件則將支持session保存到多個地方,如:python
安裝mysql
pip3 install flask-sessionredis
一、redissql
#!/usr/bin/env python # -*- coding:utf-8 - import redis from flask import Flask, session from flask_session import Session app = Flask(__name__) app.debug = True app.secret_key = 'xxxx' app.config['SESSION_TYPE'] = 'redis' # session類型爲redis app.config['SESSION_PERMANENT'] = False # 若是設置爲True,則關閉瀏覽器session就失效。 app.config['SESSION_USE_SIGNER'] = False # 是否對發送到瀏覽器上session的cookie值進行加密 app.config['SESSION_KEY_PREFIX'] = 'session:' # 保存到session中的值的前綴 app.config['SESSION_REDIS'] = redis.Redis(host='127.0.0.1', port='6379', password='123123') # 用於鏈接redis的配置 Session(app) @app.route('/index') def index(): session['k1'] = 'v1' return 'xx' if __name__ == '__main__': app.run()
二、memcachedmongodb
#!/usr/bin/env python # -*- coding:utf-8 - import redis from flask import Flask, session from flask_session import Session import memcache app = Flask(__name__) app.debug = True app.secret_key = 'xxxx' app.config['SESSION_TYPE'] = 'memcached' # session類型爲redis app.config['SESSION_PERMANENT'] = True # 若是設置爲True,則關閉瀏覽器session就失效。 app.config['SESSION_USE_SIGNER'] = False # 是否對發送到瀏覽器上session的cookie值進行加密 app.config['SESSION_KEY_PREFIX'] = 'session:' # 保存到session中的值的前綴 app.config['SESSION_MEMCACHED'] = memcache.Client(['10.211.55.4:12000']) Session(app) @app.route('/index') def index(): session['k1'] = 'v1' return 'xx' if __name__ == '__main__': app.run()
三、filesystem數據庫
#!/usr/bin/env python # -*- coding:utf-8 - import redis from flask import Flask, session from flask_session import Session app = Flask(__name__) app.debug = True app.secret_key = 'xxxx' app.config['SESSION_TYPE'] = 'filesystem' # session類型爲redis app.config[ 'SESSION_FILE_DIR'] = '/Users/wupeiqi/PycharmProjects/grocery/96.Flask新課程/組件/2.flask-session' # session類型爲redis app.config['SESSION_FILE_THRESHOLD'] = 500 # 存儲session的個數若是大於這個值時,就要開始進行刪除了 app.config['SESSION_FILE_MODE'] = 384 # 文件權限類型 app.config['SESSION_PERMANENT'] = True # 若是設置爲True,則關閉瀏覽器session就失效。 app.config['SESSION_USE_SIGNER'] = False # 是否對發送到瀏覽器上session的cookie值進行加密 app.config['SESSION_KEY_PREFIX'] = 'session:' # 保存到session中的值的前綴 Session(app) @app.route('/index') def index(): session['k1'] = 'v1' session['k2'] = 'v1' return 'xx' if __name__ == '__main__': app.run()
四、mongodbflask
#!/usr/bin/env python # -*- coding:utf-8 - import redis from flask import Flask, session from flask_session import Session import pymongo app = Flask(__name__) app.debug = True app.secret_key = 'xxxx' app.config['SESSION_TYPE'] = 'mongodb' # session類型爲redis app.config['SESSION_MONGODB'] = pymongo.MongoClient() app.config['SESSION_MONGODB_DB'] = 'mongo的db名稱(數據庫名稱)' app.config['SESSION_MONGODB_COLLECT'] = 'mongo的collect名稱(表名稱)' app.config['SESSION_PERMANENT'] = True # 若是設置爲True,則關閉瀏覽器session就失效。 app.config['SESSION_USE_SIGNER'] = False # 是否對發送到瀏覽器上session的cookie值進行加密 app.config['SESSION_KEY_PREFIX'] = 'session:' # 保存到session中的值的前綴 Session(app) @app.route('/index') def index(): session['k1'] = 'v1' session['k2'] = 'v1' return 'xx' if __name__ == '__main__': app.run()
mongodb操做簡單示例瀏覽器
#!/usr/bin/env python # -*- coding:utf-8 -*- from pymongo import MongoClient # 建立連接 conn = MongoClient('47.93.4.198', 27017) # 選擇數據庫 db = conn['db1'] # 選擇表 posts = db['posts'] post_data = { 'name': 'shuyang', 'age': 18 } # 表中插入數據 # result = posts.insert_one(post_data) # 獲取一條數據 # row = posts.find_one() # print(row) # # 獲取多條數據 # rows = posts.find() # for row in rows: # print(row) # 刪除多條數據 # rows = posts.delete_many(filter={}) # print(rows) # 更新多條數據 # posts.update({}, {'name': 'shuyang'})
五、sqlalchemycookie
#!/usr/bin/env python # -*- coding:utf-8 - import redis from flask import Flask, session from flask_session import Session as FSession from flask_sqlalchemy import SQLAlchemy app = Flask(__name__) app.debug = True app.secret_key = 'xxxx' # 設置數據庫連接 app.config['SQLALCHEMY_DATABASE_URI'] = 'mysql+pymysql://root:123@127.0.0.1:3306/fssa?charset=utf8' app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = True # 實例化SQLAlchemy db = SQLAlchemy(app) app.config['SESSION_TYPE'] = 'sqlalchemy' # session類型爲sqlalchemy app.config['SESSION_SQLALCHEMY'] = db # SQLAlchemy對象 app.config['SESSION_SQLALCHEMY_TABLE'] = 'session' # session要保存的表名稱 app.config['SESSION_PERMANENT'] = True # 若是設置爲True,則關閉瀏覽器session就失效。 app.config['SESSION_USE_SIGNER'] = False # 是否對發送到瀏覽器上session的cookie值進行加密 app.config['SESSION_KEY_PREFIX'] = 'session:' # 保存到session中的值的前綴 FSession(app) @app.route('/index') def index(): session['k1'] = 'v1' session['k2'] = 'v1' return 'xx' if __name__ == '__main__': app.run()
PS: 在寫好代碼後,不要着急運行,須要先執行進入終端執行一條建立數據庫表的命令:session
$ python3 Python 3.5.1 (v3.5.1:37a07cee5969, Dec 5 2015, 21:12:44) [GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> from app import db >>> db.create_all() >>>
應用場景
若是應用程序比較小,就用原生的加密ccokie 保存session(內置)若是應用程序比較大,就用redis(flask-session)