1. 网络请求中的cookie

1.1 删除cooki

NSHTTPCookieStorage *cookieStorage = [NSHTTPCookieStorage sharedHTTPCookieStorage];NSArray *cookies = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies];//删除cookiefor (NSHTTPCookie *tempCookie in cookies) {    [cookieStorage deleteCookie:tempCookie];}

1.2 获取并保存cookie

/* * 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cookieNSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];[userDefaults setObject: cookiesData forKey: @"cookie"];

1.3 取出保存的cookie并设置

NSHTTPCookieStorage *sharedHTTPCookieStorage = [NSHTTPCookieStorage sharedHTTPCookieStorage];if ([sharedHTTPCookieStorage cookieAcceptPolicy] != NSHTTPCookieAcceptPolicyAlways) {    [[NSHTTPCookieStorage sharedHTTPCookieStorage] setCookieAcceptPolicy:NSHTTPCookieAcceptPolicyAlways];}//取出保存的cookieNSUserDefaults *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");}