iOS cookie的用法

Posted 2020-10-05 雨季的雾

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"); }

看一下运行截图

最后，奉上demo
CookieText