The use of ios--basic knowledge--cookie

1, get cookies
To get a cookie can only be in the request to obtain a cookie, otherwise not get, the URL is not given, people use their own URL test on the line.
Cookies are archived and stored in userdefaults after obtaining a cookie

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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. Delete Cookies
Delete the acquired cookie, which can be used to log out or switch accounts.
Currently, I delete the cookie here in order to detect if the cookie was successfully set by the locally stored data later

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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, set cookies with locally stored data
Remove and archive local cookies, set into cookies, and detect if cookies are set successfully

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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");}

The use of ios--basic knowledge--cookie