@app.route("/set_cookie")
def set_cookie():
    """設(shè)置cookie，通過response傳遞到客戶端進(jìn)行保存"""
    response = make_response('默認(rèn)首頁')
    response.set_cookie('username', 'jingtian')            # session會(huì)話期有效，關(guān)閉瀏覽器后當(dāng)前cookie就會(huì)被刪除 如果沒有設(shè)置max_age，則當(dāng)前cookie變量會(huì)在瀏覽器關(guān)閉（會(huì)話結(jié)束以后被瀏覽器刪除）
    response.set_cookie('user', 'jigntian', max_age=30 )   # 指定有效時(shí)間，過期以后瀏覽器刪除cookie，max_age=30秒
    return response

#獲取cookie
@app.route("/get_cookie")
def get_cookie():
    """獲取來自客戶端的cookie"""
    print(request.cookies)  # ImmutableMultiDict([])
    username = request.cookies.get('username')  # 沒有值則返回None
    user = request.cookies.get('user')          # 沒有值則返回None
    print(f"username={username},user={user}")   # username=xiaoming,user=xiaoming
    return "get cookie"

#刪除cookie
@app.route("/del_cookie")
def del_cookie():
    response = make_response('del cookie')
    # 刪除操作肯定是在瀏覽器完成的，所以我們重置下cookie名稱的對飲有效時(shí)間為0，此時(shí)cookie的值已經(jīng)不重要了。
    response.set_cookie('user', '', max_age=0)
    response.set_cookie('username', '', max_age=0)
    return response

from flask import Flask, make_response,request
# 應(yīng)用實(shí)例對象
app = Flask(__name__)
#設(shè)置cookie
@app.route("/set_cookie")
def set_cookie():
    """設(shè)置cookie，通過response傳遞到客戶端進(jìn)行保存"""
    response = make_response('默認(rèn)首頁')
    response.set_cookie('username', 'jingtian')            # session會(huì)話期有效，關(guān)閉瀏覽器后當(dāng)前cookie就會(huì)被刪除
    response.set_cookie('user', 'jigntian', max_age=30 )   # 指定有效時(shí)間，過期以后瀏覽器刪除cookie，max_age=30秒
    return response
#獲取cookie
@app.route("/get_cookie")
def get_cookie():
    """獲取來自客戶端的cookie"""
    print(request.cookies)  # ImmutableMultiDict([])
    username = request.cookies.get('username')  # 沒有值則返回None
    user = request.cookies.get('user')          # 沒有值則返回None
    print(f"username={username},user={user}")   # username=jigntian,user=jigntian
    return "get cookie"
#刪除cookie
@app.route("/del_cookie")
def del_cookie():
    # cookie保存客戶端瀏覽器中的，所以服務(wù)端無法直接刪除cookie
    # 要實(shí)現(xiàn)刪除cookie，只能告訴瀏覽器，cookie過期了，讓瀏覽器自動(dòng)刪除
    """刪除cookie，重新設(shè)置cookie的時(shí)間，讓瀏覽器自己根據(jù)有效期來刪除"""
    response = make_response('del cookie')
    # 刪除操作肯定是在瀏覽器完成的，所以我們重置下cookie名稱的對飲有效時(shí)間為0，此時(shí)cookie的值已經(jīng)不重要了。
    response.set_cookie('user', '', max_age=0)
    response.set_cookie('username', '', max_age=0)
    return response
if __name__ == '__main__':
    # 啟動(dòng)項(xiàng)目的web應(yīng)用程序
    app.run(host="0.0.0.0", port=5000, debug=True)

app.config['SECRET_KEY'] = 'dafssg231bfvxvdsfwrqdqfafaffsgsbfsfsgs'
#設(shè)置session
@app.route("/set_session")
def set_session():
    """設(shè)置session"""
    session['username'] = 'jingtian'
    session['info'] = {
        "name": "jingtian",
        "age": 16,
    }
    print(session,type(session))
    return "set_session"

from datetime import timedelta
# 以下兩步設(shè)置過期時(shí)間
session.permanent = True # 開啟設(shè)置有效期，默認(rèn)為31天后過期
app.permanent_session_lifetime = timedelta(minutes=10)
return "set_session"

@app.route("/get_session")
def get_session():
    """獲取session"""
    print(session.get('username'))
    print(session.get('info'))
    return "get session"

@app.route("/del_session")
def del_session():
    """刪除session，鍵如果不存在，則會(huì)拋出異常，所以刪除之前需要判斷鍵是否存在。"""
    if "username" in session:
        session.pop("username")
    if "info" in session:
        session.pop("info")
    return "del_session"

from flask import Flask, session
from datetime import timedelta
# 應(yīng)用實(shí)例對象
app = Flask(__name__)
#因?yàn)閒alsk中的session是基于cookie加密實(shí)現(xiàn)的，所以使用之前必須設(shè)置SECRET_KEY選項(xiàng)
app.config['SECRET_KEY'] = 'dafssg231bfvxvdsfwrqdqfafaffsgsbfsfsgs'
#設(shè)置session
@app.route("/set_session")
def set_session():
    """設(shè)置session"""
    session['username'] = 'jingtian'
    session['info'] = {
        "name": "jingtian",
        "age": 16,
    }
    print(session,type(session))
    # 以下兩步設(shè)置過期時(shí)間
    session.permanent = True # 開啟設(shè)置有效期，默認(rèn)為31天后過期
    app.permanent_session_lifetime = timedelta(minutes=10)
    return "set_session"
#獲取session
@app.route("/get_session")
def get_session():
    """獲取session"""
    print(session.get('username'))
    print(session.get('info'))
    return "get session"
#刪除session
@app.route("/del_session")
def del_session():
    """刪除session，鍵如果不存在，則會(huì)拋出異常，所以刪除之前需要判斷鍵是否存在。"""
    if "username" in session:
        session.pop("username")
    if "info" in session:
        session.pop("info")
    return "del_session"
if __name__ == '__main__':
    # 啟動(dòng)項(xiàng)目的web應(yīng)用程序
    app.run(host="0.0.0.0", port=5000, debug=True)