iOS cookie的用法
在APP开发中,cookie也开始变的越来越重要了。为了更好的切换,注销和登录账户,就必须熟悉cookie的用法。
花了点时间把代码整理了一下,注释也都标上了
1,获取cookie
获取cookie只能在请求中获取cookie,否则时获取不到的,url就不给出了,大家用自己的url测试一下就行。
获取到cookie后把cookie进行归档保存到userDefaults里
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#pragma mark 获取并保存cookie到userDefaults - ( void )getAndSaveCookie { NSLog ( @"=============获取cookie==============" ); NSString *urlString = @"" ; //请求一个网址,即可分配到cookie AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager]; manager.responseSerializer = [AFJSONResponseSerializer new ]; [manager GET:urlString parameters: nil success:^(AFHTTPRequestOperation *operation, id responseObject) { //获取cookie NSArray *cookies = [[ NSHTTPCookieStorage sharedHTTPCookieStorage] cookies]; for ( NSHTTPCookie *tempCookie in cookies) { //打印获得的cookie NSLog ( @"getCookie: %@" , tempCookie); } /* * 把cookie进行归档并转换为NSData类型 * 注意:cookie不能直接转换为NSData类型,否则会引起崩溃。 * 所以先进行归档处理,再转换为Data */ NSData *cookiesData = [ NSKeyedArchiver archivedDataWithRootObject: [[ NSHTTPCookieStorage sharedHTTPCookieStorage] cookies]]; //存储归档后的cookie NSUserDefaults *userDefaults = [ NSUserDefaults standardUserDefaults]; [userDefaults setObject: cookiesData forKey: @"cookie" ]; NSLog ( @"\n" ); [ self deleteCookie]; [ self setCoookie]; } failure:^(AFHTTPRequestOperation *operation, NSError *error) { nil ; }]; } |
2,删除cookie
把获取到的cookie删除掉,该步骤可以用在注销或者切换账号里。
当前,我这里删除cookie是为了检测后面的通过本地存储的数据进行设置cookie是否成功
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#pragma mark 删除cookie - ( void )deleteCookie { NSLog ( @"============删除cookie===============" ); NSHTTPCookieStorage *cookieStorage = [ NSHTTPCookieStorage sharedHTTPCookieStorage]; NSArray *cookies = [[ NSHTTPCookieStorage sharedHTTPCookieStorage] cookies]; //删除cookie for ( NSHTTPCookie *tempCookie in cookies) { [cookieStorage deleteCookie:tempCookie]; } //把cookie打印出来,检测是否已经删除 NSArray *cookiesAfterDelete = [[ NSHTTPCookieStorage sharedHTTPCookieStorage] cookies]; for ( NSHTTPCookie *tempCookie in cookiesAfterDelete) { NSLog ( @"cookieAfterDelete: %@" , tempCookie); } NSLog ( @"\n" ); } |
3,通过本地存储的数据设置cookie
把本地的cookie取出并反归档,设置到cookie中,并且检测cookie是否设置成功
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#pragma mark 再取出保存的cookie重新设置cookie - ( void )setCoookie { NSLog ( @"============再取出保存的cookie重新设置cookie===============" ); //取出保存的cookie NSUserDefaults *userDefaults = [ NSUserDefaults standardUserDefaults]; //对取出的cookie进行反归档处理 NSArray *cookies = [ NSKeyedUnarchiver unarchiveObjectWithData:[userDefaults objectForKey: @"cookie" ]]; if (cookies) { NSLog ( @"有cookie" ); //设置cookie NSHTTPCookieStorage *cookieStorage = [ NSHTTPCookieStorage sharedHTTPCookieStorage]; for ( id cookie in cookies) { [cookieStorage setCookie:( NSHTTPCookie *)cookie]; } } else { NSLog ( @"无cookie" ); } //打印cookie,检测是否成功设置了cookie NSArray *cookiesA = [[ NSHTTPCookieStorage sharedHTTPCookieStorage] cookies]; for ( NSHTTPCookie *cookie in cookiesA) { NSLog ( @"setCookie: %@" , cookie); } NSLog ( @"\n" ); } |
最后,奉上demo
CookieText