网上百度了好多方法,都没有达到自己需要的,最终还是自己搞出来,只要针对保存taoBao的cookies;

/* 在加载webView的时候 将cookie设置到url中

• (void)loadWebView {
  NSString *urlString = @"******";

  NSURL * url = [NSURL URLWithString:urlString];

  //获取本地保存的 cookies
  [self getCookiesForUrlWithRequest:url];

  NSURLRequest * request = [NSURLRequest requestWithURL:url];

  [self.webView loadRequest:request];

}

• (void)getCookiesForUrlWithRequest:(NSURL * )url {
  NSMutableArray * cookiesLocation = [NSMutableArray arrayWithCapacity:10];
  NSArray *cookDics =[[NSUserDefaults standardUserDefaults] objectForKey:@"cookies"];
  for (NSDictionary *cookies in cookDics ){
  if ([cookies isKindOfClass:[NSDictionary class]]) {
  NSMutableDictionary *cookieProperties = [NSMutableDictionary dictionary];
  [cookieProperties setObject:[NSString stringWithFormat:@"%@",cookies[@"name"]] forKey:NSHTTPCookieName];
  [cookieProperties setObject:[NSString stringWithFormat:@"%@",cookies[@"version"]] forKey:NSHTTPCookieVersion];
  [cookieProperties setObject:[NSString stringWithFormat:@"%@",cookies[@"value"]] forKey:NSHTTPCookieValue];
  [cookieProperties setObject:[NSString stringWithFormat:@"%@",cookies[@"expiresDate"]] forKey:NSHTTPCookieExpires];
  [cookieProperties setObject:[NSString stringWithFormat:@"%@",cookies[@"domain"]] forKey:NSHTTPCookieDomain];
  [cookieProperties setObject:[NSString stringWithFormat:@"%@",cookies[@"path"]] forKey:NSHTTPCookiePath];
  [cookieProperties setObject:[NSString stringWithFormat:@"%@",cookies[@"isSecure"]] forKey:NSHTTPCookieSecure];

      //  将字典转化为cookie
        NSHTTPCookie *cookieuser = [NSHTTPCookie cookieWithProperties:cookieProperties];
        [cookiesLocation addObject:cookieuser];
    }
  

  }
  [[NSHTTPCookieStorage sharedHTTPCookieStorage] setCookies:cookiesLocation forURL:url mainDocumentURL:NSHTTPCookieAcceptPolicyAlways];
  }
  /// mainDocumentUR 枚举 : NSHTTPCookieAcceptPolicyAlways， NSHTTPCookieAcceptPolicyNever， NSHTTPCookieAcceptPolicyOnlyFromMainDocumentDomain
  解释参考:http://blog.sina.com.cn/s/blog_4cd8dd130100tsme.html

//在登录成功之后 保存登录信息 cookies

• (void)saveCookies:(NSURL )url {
  NSHTTPCookieStorage * nCookies = [NSHTTPCookieStorage sharedHTTPCookieStorage];
  NSArray cookiesURL = [nCookies cookiesForURL:url];

  NSMutableArray *saveCookieAry = [NSMutableArray arrayWithCapacity:10];
  NSHTTPCookie *cookie;
  for (id c in cookiesURL)
  {
  if ([c isKindOfClass:[NSHTTPCookie class]])
  {
  cookie=(NSHTTPCookie *)c;
  NSNumber *sessionOnly = [NSNumber numberWithBool:cookie.sessionOnly];
  NSNumber *isSecure = [NSNumber numberWithBool:cookie.isSecure];
  ///筛选出需要使用的参数进行保存
  NSMutableDictionary *dic = [NSMutableDictionary dictionaryWithCapacity:6];
  [dic setObject:[NSString stringWithFormat:@"%@",cookie.name] forKey:@"name"];
  [dic setObject:[NSString stringWithFormat:@"%lu",(unsigned long)cookie.version] forKey:@"version"];
  [dic setObject:[NSString stringWithFormat:@"%@",cookie.value] forKey:@"value"];
  [dic setObject:[NSString stringWithFormat:@"%@",cookie.expiresDate] forKey:@"expiresDate"];
  [dic setObject:[NSString stringWithFormat:@"%@",sessionOnly] forKey:@"sessionOnly"];
  [dic setObject:[NSString stringWithFormat:@"%@",cookie.domain] forKey:@"domain"];
  [dic setObject:[NSString stringWithFormat:@"%@",cookie.path] forKey:@"path"];
  [dic setObject:[NSString stringWithFormat:@"%@",isSecure] forKey:@"isSecure"];
  [saveCookieAry addObject:dic];
  }
  }

  [[NSUserDefaults standardUserDefaults] setObject:saveCookieAry forKey:@"cookies"];
  }