如何在 android WebView 客户端中设置 cookie

Question

我想通过 WebView 调用一个特定的 url。该页面只能在用户登录后调用。我使用 AsyncHttpClient 库来执行登录调用。成功登录后，通过 WebView 加载 url 似乎无法识别正确的 headers esp cookie。我怀疑 HttpClient 和 WebView's HttpClient 之间的 cookie 没有正确同步。知道为什么吗？ .这是我如何使用 WebView

    final WebView webView = (WebView) content.findViewById(R.id.web_travel_advisory);
    String url = "http://mydomainurl.com/get_data_after_login";

    webView.setWebViewClient(new WebViewClient());

    CookieSyncManager.createInstance(getActivity());
    CookieSyncManager.getInstance().startSync();
    CookieManager.getInstance().setAcceptCookie(true);

    webView.getSettings().setJavaScriptEnabled(true);

    webView.loadUrl(url);

感谢您的帮助。

Answer 1

哦，几个小时后，我终于想通了让它工作。首先 CookieSyncManager is deprecated on later version of android since api 21 according to doc. So decided not to use it anymore. Secondly CookieManager 用于存储 WebView 的 cookie。

最终代码

    CookieManager cookieManager = CookieManager.getInstance();
    cookieManager.setAcceptCookie(true);

    List<Cookie> cookies = WSHelper.cookieStore.getCookies();

    cookieManager.removeAllCookie();

    if (cookies != null) {
        for (Cookie cookie : cookies) {
            if (cookie.getName().contains("session")){
                String cookieString = cookie.getName() + "=" + cookie.getValue() + "; Domain=" + cookie.getDomain();
                cookieManager.setCookie(cookie.getDomain(), cookieString);
                Log.d("CookieUrl",cookieString + " ");
            }
        }
    }
    webView.loadUrl(url);

解决方案的关键变化是：使用 cookie.getDomain() 而不是显式域。

cookieManager.setCookie(cookie.getDomain(), cookieString);

Answer 2

试试这个代码，经过一些修改后对我有用：

public class WebViewActivity extends Activity{
    private SharedPreferences mPreferences;

    String token="";
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.webviewpage);

        mPreferences = getSharedPreferences("CurrentUser", MODE_PRIVATE);

    }

    public void LaunchWebView(View view) {

        WebView myWebView = (WebView) findViewById(R.id.myWebView);
        myWebView.getSettings().setJavaScriptEnabled(true);
        myWebView.getSettings().setSaveFormData(false);

        CookieSyncManager.createInstance(this);
        CookieSyncManager.getInstance().startSync();
        CookieManager cookieManager = CookieManager.getInstance();
        cookieManager.setAcceptCookie(true);
        CookieManager.getInstance().setAcceptThirdPartyCookies(myWebView, true);

        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
        String token2= mPreferences.getString("auth_token","");

        HashMap<String, String> map = new HashMap<String, String>();
        map.put("x-auth-token", token);

        myWebView.getSettings().setAppCacheEnabled(true);
        myWebView.setWebViewClient(new WebViewClient() {
            public boolean shouldOverrideUrlLoading(WebView view,String url) {
                view.loadUrl(url);
                return true;
            }
        });
        myWebView.loadUrl("YOUR_URL", map);
    }
}

Answer 3

我的问题略有不同，但@Tixeon 的回答给了我解决问题的关键。我正在编写我的 Cookie 并将其添加到 WebView 请求中，但我发现 Android 覆盖了我的 Cookie 并发送了它自己的 Cookie。所以首先，我必须从数组中删除所有 cookie，然后组成我自己的 Cookie。这是示例代码：

// Note that my project has minSdkVersion 21, so I can directly use methods only available in Lollipop
private fun loadUrlInWebView(url: String) {
    webView.settings.apply {
        builtInZoomControls = false
        javaScriptEnabled = true
        useWideViewPort = true
        loadWithOverviewMode = true
        setSupportMultipleWindows(false)
    }
    CookieManager.getInstance().apply {
        setAcceptThirdPartyCookies(webView, true) // My minSdkVersion is 21
        removeAllCookies { value ->
            Log.d("Cookies", "Removed all cookies from CookieManager")
        }
    }

    webView.apply {
        isVerticalScrollBarEnabled = true
        isHorizontalScrollBarEnabled = true
        loadUrl(
            url,
            mutableMapOf(
                "Cookie" to "ThisIsMyCookieWithMyValues",
                "Accept" to "*/*",
                "Accept-Encoding" to "gzip, deflate",
                "Cache-Control" to "no-cache",
                "Content-type" to "application/x-www-form-urlencoded"
            )
        )
    }
}

现在请求包含我的 Cookie 而不是 Android 提供的默认 Cookie，并且我在 WebView 中的会话正在运行。希望这对其他人有帮助

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