AFNetworking-cookies 的使用

关于AFNetworking的 cookies的使用:
   默认情况下AFNetWorking支持cookies.比如在调用登陆接口后,会保存cookies.在请求其他接口时,会携带cookies给服务器那边.
   这里有个问题,如果要设置请求登陆时不保存cookies,这里可以在AFHTTPSessionManager设置 [self.requestSerializer setHTTPShouldHandleCookies:NO]来实现.
   如果项目中要实现自己获取,删除cookies,方法如下:

 1.获取登陆请求成功后保存的cookies:
+ (NSString *)cookieValueWithKey:(NSString *)key
{
    NSHTTPCookieStorage *sharedHTTPCookieStorage = [NSHTTPCookieStorage sharedHTTPCookieStorage];

    if ([sharedHTTPCookieStorage cookieAcceptPolicy] != NSHTTPCookieAcceptPolicyAlways) {
        [[NSHTTPCookieStorage sharedHTTPCookieStorage] setCookieAcceptPolicy:NSHTTPCookieAcceptPolicyAlways];
    }

    NSArray         *cookies = [sharedHTTPCookieStorage cookiesForURL:[NSURL URLWithString:@"http://192...."]];
    NSEnumerator    *enumerator = [cookies objectEnumerator];
    NSHTTPCookie    *cookie;
    while (cookie = [enumerator nextObject]) {
        if ([[cookie name] isEqualToString:key]) {
            return [NSString stringWithString:[[cookie value] stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
        }
    }

    return nil;
}

2.删除cookies (key所对应的cookies) ///因为cookies保存在NSHTTPCookieStorage.cookies中.这里删除它里边的元素即可.
+ (void)deleteCookieWithKey:(NSString *)key
{
    NSHTTPCookieStorage *cookieJar = [NSHTTPCookieStorage sharedHTTPCookieStorage];

    NSArray *cookies = [NSArray arrayWithArray:[cookieJar cookies]];

    for (NSHTTPCookie *cookie in cookies) {
        if ([[cookie name] isEqualToString:key]) {
            [cookieJar deleteCookie:cookie];
        }
    }
}