• iOS--基础知识--cookie的使用


    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(@" ");
     
            [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(@" ");
    }

    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(@" ");
    }

     

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  • 原文地址:https://www.cnblogs.com/howdoudo/p/4813323.html
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