Question

我正在制作一个基于WkWebView cookie来决定用户登录/注销和其他活动的应用程序。大多数情况下，它可以正常工作。有时，登录URL成功后，它无法获取cookie。并且在用户注销时无法删除cookie。甚至，当我快速登录或注销时，它显示会话的错误/先前令牌。

我的实现就像：

$.post()

代表是：

    func loadWebView () {

    let webConfiguration = WKWebViewConfiguration()
    webView = WKWebView(frame:  UIScreen.main.bounds, configuration: webConfiguration )
    webView.customUserAgent = APP_IDENTITY.appending("|") + Utility.deviceID().appending("|") + PSUserDefaults.getFCMToken()

    webView.navigationDelegate = self
    webView.uiDelegate = self
    webView.load(DOMAIN_URL)
  }

extension WKWebView {
func load(_ urlString: String) {
    if let url = URL(string: urlString) {
        let request = URLRequest(url: url)
        load(request)
    }
}

func cleanAllCookies() {
    HTTPCookieStorage.shared.removeCookies(since: Date.distantPast)
    print("All cookies deleted")

    WKWebsiteDataStore.default().fetchDataRecords(ofTypes: WKWebsiteDataStore.allWebsiteDataTypes()) { records in
        records.forEach { record in
                WKWebsiteDataStore.default().removeData(ofTypes: record.dataTypes, for: [record], completionHandler: {})
                print("Cookie ::: \(record) deleted")
        }
    }
}

func refreshCookies() {
    self.configuration.processPool = WKProcessPool()
}

func removeCookies(){
    let cookie = HTTPCookie.self
    let cookieJar = HTTPCookieStorage.shared

    for cookie in cookieJar.cookies! {
        cookieJar.deleteCookie(cookie)
        print("removeCookies")
    }
 }
  }

注销后，我将通过各种方式从扩展方法中手动删除Cookie：

    func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
 // i am getting the cookies here most of the time. Sometimes , it failed to sync the cookies from here. 
     if #available(iOS 11.0, *) {
        print(webView.configuration.websiteDataStore.httpCookieStore.getAllCookies({ (webViewCookies) in

            let wkHttpCookieStorage = WKWebsiteDataStore.default().httpCookieStore;

            wkHttpCookieStorage.getAllCookies { (cookies) in
                // Nothing comes here sometimes !
                for cookie in cookies { 
                  }
 }

func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
    print("decidePolicyFor navigationAction : \(navigationAction.request.url!)")
   // Each URl navigation is happen properly on time 
   }

// I was checking the HTTPCookieStorage with a timer when it fails to get cookies in didFinish (wkwbeview ...) delegate method.  
func checkHTTPCookieStorage (){

        let cookieJar = HTTPCookieStorage.shared
        for cookie in cookieJar.cookies! {
              }
  }

I also check the print(webView.configuration.websiteDataStore.httpCookieStore.getAllCookies({ (webViewCookies) in {} values with a timer when it fails to fetch cookies. Nothing works sometimes.

观察：大多数情况下，它会在登录时获取Cookie，并可以在注销时删除Cookie。有时我需要3到10秒才能获得Cookie，而我应用计时器来获取Cookie。有时它完全失败了。我需要重新启动应用程序，然后它才能获取Cookie。好尴尬！

我看到了一些有关wkWebview Cookies问题的博客，报告和帖子，但没有任何帮助。

我的问题：

我怎样才能一直正确地获取/删除cookie？
我的实现有问题吗？

谢谢。

Answer 1

我在不同的iOS版本中发现了一些奇怪的行为。某些iOS版本将Cookie保存在

中

WKWebsiteDataStore.default().httpCookieStore

和某些iOS版本将其保存在

HTTPCookieStorage.shared.cookies!

从Web URL接收/设置Cookie大约需要3到10秒。我运行一个线程来检查两个商店中的cookie。可行！

Swift 4 WKWebView Cookies获取和删除同步问题

1 个答案: