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");

}