Android - 在 webview 中登录后提取 cookie

Android - extracting cookies after login in webview

提问by elgoog

I have an application that opens a url in a webview, the user must then login to a site through the webview and receives a cookie once logged in. I'm having problems getting cookies after login.

我有一个在 webview 中打开 url 的应用程序，然后用户必须通过 webview 登录到一个站点，并在登录后接收一个 cookie。登录后我在获取 cookie 时遇到问题。

The problem is, I can achieve this using android.webkit.CookieManager, and output all cookies in a single string.

问题是，我可以使用 android.webkit.CookieManager 实现这一点，并在单个字符串中输出所有 cookie。

However, I want to achieve it using the a cookie store (as in java.net.CookieStore) so I need to be using java.net.CookieManager.

但是，我想使用 cookie 存储（如在 java.net.CookieStore 中）来实现它，所以我需要使用 java.net.CookieManager。

I'm using the following code within the onPageFinished() of a WebViewClient. I know the issue is with opening a new connection, where I need to be getting the content from the current page. I'd appreciate some help, thanks

我在 WebViewClient 的 onPageFinished() 中使用以下代码。我知道问题在于打开一个新连接，我需要从当前页面获取内容。我很感激一些帮助，谢谢

        @Override
        public void onPageFinished(WebView view, String url){

            Log.d(TAG, "Finished loading: " + url);

            CookieSyncManager syncManager = CookieSyncManager.createInstance(Main.this);
            syncManager.sync();

            CookieManager manager = new CookieManager();
            manager.setCookiePolicy(CookiePolicy.ACCEPT_ALL);
            CookieHandler.setDefault(manager);

            try {
                URL blah = new URL(url);
                HttpURLConnection con = (HttpURLConnection) blah.openConnection();
                readStream(con.getInputStream()); // outputting html
            } 
            catch (Exception e) {
            }

            CookieStore cookieJar = manager.getCookieStore();
            List<HttpCookie> cookies = cookieJar.getCookies();

            for (HttpCookie cookie: cookies) {
                Log.d(TAG, "cookie name : "+cookie.getName().toString());
            }
        }

回答by mr.boyfox

You can extract all cookies current url by this way from webview as string:

您可以通过这种方式从 webview 中提取所有 cookie 当前 url 作为字符串：

@Override
public void onPageFinished(WebView view, String url){
    String cookies = CookieManager.getInstance().getCookie(url);
    Log.d(TAG, "All the cookies in a string:" + cookies);
}

回答by vimal1083

It was a quite late , but it might help someone

已经很晚了，但它可能会帮助某人

you can get the cookie value using this

您可以使用此获取 cookie 值

getCookie("http://www.example.com","cookieName");

Declare the function as

将函数声明为

public String getCookie(String siteName,String cookieName){     
    String CookieValue = null;

    CookieManager cookieManager = CookieManager.getInstance();
    String cookies = cookieManager.getCookie(siteName);       
    String[] temp=cookies.split(";");
    for (String ar1 : temp ){
        if(ar1.contains(cookieName)){
            String[] temp1=ar1.split("=");
            CookieValue = temp1[1];
            break;
        }
    }              
    return CookieValue; 
}

回答by Juan Mendez

This answer is derived from @vimal1083. It returns the values in a Map, and of course written in Kotlin.

这个答案来自@vimal1083。它返回 a 中的值Map，当然用Kotlin.

fun getCookieMap(siteName: String): Map<String,String> {

    val manager = CookieManager.getInstance()
    val map = mutableMapOf<String,String>()

    manager.getCookie(siteName)?.let {cookies ->
        val typedArray = cookies.split(";".toRegex()).dropLastWhile { it.isEmpty() }.toTypedArray()
        for (element in typedArray) {
            val split = element.split("=".toRegex()).dropLastWhile { it.isEmpty() }.toTypedArray()

            if(split.size >= 2) {
                map[split[0]] = split[1]
            } else if(split.size == 1) {
                map[split[0]] = ""
            }
        }
    }

    return map
}

回答by Darpan

Check this link - Pass cookies from HttpURLConnection (java.net.CookieManager) to WebView (android.webkit.CookieManager)

检查此链接 - 从 HttpURLConnection (java.net.CookieManager) 到 WebView (android.webkit.CookieManager) 传递 cookie

If you want to get cookies from webview, you will have to use android.webkit.CookieManager, from any HttpUrlConnection, however, you can extract cookies useing java.net.CookieStore

如果您想从 webview 获取 cookie，则必须使用android.webkit.CookieManager, from any HttpUrlConnection，但是，您可以使用java.net.CookieStore

You will need to parse the string where you are getting all the cookies.

您将需要解析获取所有 cookie 的字符串。