多线程与网络之cookies

1. 网络请求中的cookie

1.1 删除cooki

NSHTTPCookieStorage *cookieStorage = [NSHTTPCookieStorage sharedHTTPCookieStorage];
NSArray *cookies = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies];

//删除cookie
for (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cookie
NSUserDefaults *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");
}