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                django提供了一些方法對cookie進行操作,主要分為以下三個內容: - 設置cookie - 刪除cookie - 獲取cookie ### 設置cookie 設置key和value等參數可以給瀏覽器設置cookie,在django中,需要對response對象進行操作 設置cookie可以通過`response.set_cookie`來設置 ```python def set_cookie(self, key, value='', max_age=None, expires=None, path='/', domain=None, secure=False, httponly=False): self.cookies[key] = value if expires is not None: if isinstance(expires, datetime.datetime): if timezone.is_aware(expires): expires = timezone.make_naive(expires, timezone.utc) delta = expires - expires.utcnow() # Add one second so the date matches exactly (a fraction of # time gets lost between converting to a timedelta and # then the date string). delta = delta + datetime.timedelta(seconds=1) # Just set max_age - the max_age logic will set expires. expires = None max_age = max(0, delta.days * 86400 + delta.seconds) else: self.cookies[key]['expires'] = expires else: self.cookies[key]['expires'] = '' if max_age is not None: self.cookies[key]['max-age'] = max_age # IE requires expires, so set it if hasn't been already. if not expires: self.cookies[key]['expires'] = cookie_date(time.time() + max_age) if path is not None: self.cookies[key]['path'] = path if domain is not None: self.cookies[key]['domain'] = domain if secure: self.cookies[key]['secure'] = True if httponly: self.cookies[key]['httponly'] = True ``` `set_cookie`中一共有8個參數,分別如下: 1. key :這個 cookie 的 key 。 2. value :這個 cookie 的 value 。 3. max_age :最長的生命周期。單位是秒。 4. expires :過期時間。跟 max_age 是類似的,只不過這個參數需要傳遞一個具體的日期,比如 datetime 或者是符合日期格式的字符串。如果同時設置了 expires 和 max_age ,那么將會使用 expires 的值作為過期時間。 5. path :對域名下哪個路徑有效。默認是對域名下所有路徑都有效。 6. domain :針對哪個域名有效。默認是針對主域名下都有效,如果只要針對某個子域名才有效,那么可以設置這個屬性. 7. secure :是否是安全的,如果設置為 True ,那么只能在 https 協議下才可用。 8. httponly :默認是 False 。如果為 True ,那么在客戶端不能通過 JavaScript對cookie進行操作。 #### 設置cookie例子 ##### 設置key-value 在`vews.py`中添加以下代碼 ```python from django.http import HttpResponse def index(request): response = HttpResponse('index') response.set_cookie('username', 'zhiliao') return response ``` 在`urls.py`中設置路由 ```python from . import views path('', views.index), ``` 然后運行django ### 刪除cookie 通過`delete_cookie` 方法即可刪除 cookie ```python def delete_cookie(self, key, path='/', domain=None): self.set_cookie(key, max_age=0, path=path, domain=domain, expires='Thu, 01-Jan-1970 00:00:00 GMT') ``` 實際上刪除 cookie 就是將指定的 cookie 的值設置為空的字符串,然后使用將他的過期時間設置為 0 ,也就是瀏覽器關閉后就過期 ### 獲取cookie
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