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PyCon 2015 Crawler Tutorial Explain Cookies
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PyCon 2015 Crawler Tutorial Explain Cookies
1.
Cookie Set-Cookie: event=python-crawler
2.
Cookies 我們在參加PyCon的時候 要先出⽰示通⾏行證 場 務⼈人員會掃描QR
code 然後給你識別證
3.
Cookies 這個識別證要全程掛在脖⼦子上
4.
Cookies 讓場務⼈人員知道我們是參加PyCon的
5.
Cookies 如果識別證上有”Speaker”的標記 就可以進入 講師休息室
6.
Cookies 拿午餐便當的時候 場務⼈人員會在識別證上劃記 表⽰示這個⼈人拿過便當了
7.
Cookies 所以當他想再去拿⼀一個便當的時候 ⼯工作⼈人員就 知道他已經拿過便當了 不能再發
8.
Cookies ⽽而且下次再進來時就不必再跟⼯工作⼈人員確認⼀一 次
9.
Cookies 假如今天沒有識別證...
10.
Cookies 那麼每個⼈人都可以偽裝成會眾 偽裝成講師 可以吃無限多個便當
11.
流程是這樣的: 通⾏行證
12.
流程是這樣的: 通⾏行證 Scan
13.
流程是這樣的: 通⾏行證 Scan 識別證
14.
流程是這樣的: 通⾏行證 Scan 識別證
15.
HTTP Cookies
16.
HTTP Cookies Username /Password
17.
HTTP Cookies Username /Password Login
18.
HTTP Cookies Username /Password Login Set Cookie
19.
HTTP Cookies Username /Password Login Set Cookie Access
to Page
20.
Cookies Cookie的作⽤用就像識別證⼀一樣 可以讓server知道你的身分
21.
Cookies Cookie通常不是給⼈人看的 Cookie裡的東西通常加密過 很難偽裝 很多網站還會在每次造訪網站時隨機⽣生key
22.
Cookie Schema ⼀一個Cookie會有以下幾個屬性: name value (domain) (path) (expires)
23.
Cookie Schema 我們以識別證為例⼦子 name =
“Pycon_ID” value = “218” domain = “中央研究院⼈人⽂文社會科學館” path = “PYCON_APAC_2015” expires = “Sat June 7 2015 18:00:00”
24.
Cookies Cookie 是 Client
Only 的 Browser 會儲存這些cookie, 在發出request時 就會嵌在header裡 HTTP Response 可以在header裡傳入 Set-Cookie 告訴Client多加⼀一個Cookie
25.
Cookies 相信⼤大家都已經看過不知道多少次的PTT 八卦 版
26.
Cookies 應該也都詳細閱讀過電腦網路內容分級處理辦 法第六條第三款規定
27.
我們來解釋⼀一下流程
28.
我們來解釋⼀一下流程 PTT轉址
29.
我們來解釋⼀一下流程 PTT轉址 我同意此條款 已年滿⼗〸十八歲
30.
我們來解釋⼀一下流程 PTT轉址 我同意此條款 已年滿⼗〸十八歲 POST over18
31.
我們來解釋⼀一下流程 PTT轉址 我同意此條款 已年滿⼗〸十八歲 POST over18 PTT set-cookie
32.
我們來解釋⼀一下流程 PTT轉址 我同意此條款 已年滿⼗〸十八歲 POST over18 PTT set-cookie Access
to Page
33.
Hands-on Practice ⽤用Python requests抓取PTT八卦版資料!
Download now