使用之前的cookie

//儲存

let urlEnconded = sessionId!.stringByAddingPercentEncodingWithAllowedCharacters(

                NSCharacterSet(charactersInString: "!*'();:@&=+$,/?%#[]").invertedSet)!

            let properties = [NSHTTPCookieDomain: WebURL.URL_MIGME_SERVER,

                NSHTTPCookiePath: "\\",

                NSHTTPCookieName: "eid",

                NSHTTPCookieValue: urlEnconded + MigboClient.cookiePrefix]

            if let cookie = NSHTTPCookie(properties: properties) {

                NSHTTPCookieStorage.sharedHTTPCookieStorage().setCookie(cookie)

                System.setShareProperties(DefaultConfig.SHARE_SYS_COOKIES, value: properties)

            }

//使用

var url = NSURL(string: "yourUrl")
mutableRequest = NSMutableURLRequest(URL:url)
var cookies = NSHTTPCookieStorage.sharedHTTPCookieStorage().cookies as! [NSHTTPCookie]
var headers = NSHTTPCookie.requestHeaderFieldsWithCookies(cookies)
mutableRequest!.allHTTPHeaderFields = headers

self._webview.loadRequest(mutableRequest ?? NSURLRequest(URL:url))