这两天有个项目需求，在网上找了好多博文都不可以拿来就能实现（对于伸手党怎么能行），为了避免浪费大家的时间我在这里给出一份一定可行的方法：

1、相关知识点介绍

1. iOS在UIWebView中获取的cookie的方法：NSHTTPCookieStorage * nCookies = [NSHTTPCookieStorage sharedHTTPCookieStorage]
2. 再具体获取某个域的饼干：NSArray* cookiesURL = [nCookies cookiesForURL：[NSURL URLWithString：@“你的URL”]];
3. 通过[NSHTTPCookieStorage sharedHTTPCookieStorage] setCookie]方法将 cookies来保存起来，但是这样虽然可以保存cookies但是你应用退出之后还是会丢失(其实是cookies过期的问题)，做好的方法是把cookies放到NSUserDefaults保存起来:

2、实现方法

• 简单粗暴直接上码：GitHub Demo欢迎star, 你的star就是对我最好的鼓励.
  1.在UIWebView的代理方法中实现获取cookies并将cookies放到NSUserDefaults保存起来：(void)webViewDidFinishLoad:(UIWebView *)webView中写入
  需要注意的是你的CookieName，

 NSArray *nCookies = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies];
    NSHTTPCookie *cookie;
    for (id c in nCookies)
    {
        if ([c isKindOfClass:[NSHTTPCookie class]])
        {
            cookie=(NSHTTPCookie *)c;
            if ([cookie.name isEqualToString:@"PHPSESSID"]) {
                NSNumber *sessionOnly = [NSNumber numberWithBool:cookie.sessionOnly];
                NSNumber *isSecure = [NSNumber numberWithBool:cookie.isSecure];
                NSArray *cookies = [NSArray arrayWithObjects:cookie.name, cookie.value, sessionOnly, cookie.domain, cookie.path, isSecure, nil];
                [[NSUserDefaults standardUserDefaults] setObject:cookies forKey:@"cookies"];
                break;
            }
        }
    }

2.获取cookies：运行之后，UIWebview加载url之前获取保存好的cookies，并设置cookies，

 NSArray *cookies =[[NSUserDefaults standardUserDefaults]  objectForKey:@"cookies"];
        NSMutableDictionary *cookieProperties = [NSMutableDictionary dictionary];
        [cookieProperties setObject:[cookies objectAtIndex:0] forKey:NSHTTPCookieName];
        [cookieProperties setObject:[cookies objectAtIndex:1] forKey:NSHTTPCookieValue];
        [cookieProperties setObject:[cookies objectAtIndex:3] forKey:NSHTTPCookieDomain];
        [cookieProperties setObject:[cookies objectAtIndex:4] forKey:NSHTTPCookiePath];
        NSHTTPCookie *cookieuser = [NSHTTPCookie cookieWithProperties:cookieProperties];
        [[NSHTTPCookieStorage sharedHTTPCookieStorage]  setCookie:cookieuser];

注意：要在[self.webView loadRequest:req];之前设置获取cookies！
到现在为止你的应用肯定就已经实现了你想要的功能！
感谢楼下@440bd488f596这位同学提供的新方案，供大家参考：

NSArray *headeringCookie = [NSHTTPCookie cookiesWithResponseHeaderFields:
[NSDictionary dictionaryWithObject:
[[NSString alloc] initWithFormat:@"token=%@;",self.token]
forKey:@"Set-Cookie"]
forURL:url];

（其中连接上面实现的稍微有些问题，我在我这里已经进行了修改）功能实现参考链接

                                                                             ----By ZPengs