UIWebView：在应用重新启动时保存 cookie 状态

Question

我用 Swift 和一个打开 Web 应用程序的 UIWebView 开发了一个应用程序。每次我们的用户打开该应用程序时，他们都需要重新登录，因为该应用程序不存储 cookie。我该如何解决？

我试过这个来存储 cookies：

func webView(webView: UIWebView, shouldStartLoadWithRequest request: NSURLRequest, navigationType: UIWebViewNavigationType) -> Bool {

    println(request.URL!.absoluteString)


    var cookiesData = NSKeyedArchiver.archivedDataWithRootObject(NSHTTPCookieStorage.sharedHTTPCookieStorage().cookies!)

    NSUserDefaults.standardUserDefaults().setObject(cookiesData, forKey: "savedCookies")

    return true
}

并再次检索 cookie：

NSHTTPCookieStorage.sharedHTTPCookieStorage().cookieAcceptPolicy = NSHTTPCookieAcceptPolicy.Always
let cookies = NSKeyedUnarchiver.unarchiveObjectWithData(NSUserDefaults.standardUserDefaults().objectForKey("cookies"))

我不知道如何在数组中检索 cookie 并迭代它们。

Answer 1

试试这个代码：

保存cookie

    let cookieJar: NSHTTPCookieStorage = NSHTTPCookieStorage.sharedHTTPCookieStorage()
    let data: NSData = NSKeyedArchiver.archivedDataWithRootObject(cookieJar.cookies)
    let ud: NSUserDefaults = NSUserDefaults.standardUserDefaults()
    ud.setObject(data, forKey: "cookie")

检索 cookie

    let ud: NSUserDefaults = NSUserDefaults.standardUserDefaults()
    let data: NSData? = ud.objectForKey("cookie") as? NSData
    if let cookie = data {
        let datas: NSArray? = NSKeyedUnarchiver.unarchiveObjectWithData(cookie) as? NSArray
        if let cookies = datas {
            for c in cookies as! [NSHTTPCookie] {
                NSHTTPCookieStorage.sharedHTTPCookieStorage().setCookie(c)
            }
        }
    }

Answer 2

这是 Objective-C 中的答案：

要保存 cookie：

NSHTTPCookieStorage *cookieJar = [NSHTTPCookieStorage sharedHTTPCookieStorage];
NSData *data = [NSKeyedArchiver archivedDataWithRootObject:cookieJar.cookies];
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
[defaults setObject:data forKey:@"Cookies"];

要加载 cookie：

NSData *data = [defaults objectForKey:@"Cookies"];
if (data) {
    NSArray *cookies = [NSKeyedUnarchiver unarchiveObjectWithData:data];
    if (cookies) {
        for (NSHTTPCookie *cookie in cookies) {
            [[NSHTTPCookieStorage sharedHTTPCookieStorage] setCookie:cookie];
        }
    }
}

Answer 3

SWIFT 4（并且没有强制展开）

func saveCookie() {
    let cookieJar: HTTPCookieStorage = HTTPCookieStorage.shared
    if let cookies = cookieJar.cookies {
        let data: Data = NSKeyedArchiver.archivedData(withRootObject: cookies)
        let ud: UserDefaults = UserDefaults.standard
        ud.set(data, forKey: "cookie")
    }
}

func loadCookie() {
    let ud: UserDefaults = UserDefaults.standard
    let data: Data? = ud.object(forKey: "cookie") as? Data
    if let cookie = data {
        let datas: NSArray? = NSKeyedUnarchiver.unarchiveObject(with: cookie) as? NSArray
        if let cookies = datas {
            for c in cookies {
                if let cookieObject = c as? HTTPCookie {
                    HTTPCookieStorage.shared.setCookie(cookieObject)
                }
            }
        }
    }
}

例如，您可以在 didFinishNavigation 方法中调用 saveCookie()（如果您使用的是 UIWebView 而不是 WKWebView，则可以在 webViewDidFinishLoad 中调用）。

并且您可以在 viewDidLoad 中或在初始化 webView 之前调用 loadCookie()。

UIWebView：在应用重新启动时保存 cookie 状态

UIWebView: Save cookie state across app restarts

cookies

uiwebview

ios

swift