Android-WebView的onReceivedHttpAuthRequest()不再被调用

时间:2013-12-05 11:54:04

标签: android webview android-webview basic-authentication webviewclient

我正在使用基于webview的应用程序,我在webview中呈现网址。 Url具有HTTP身份验证。

当我第一次启动url时,会调用onReceivedHttpAuthRequest()并显示一个对话框,供用户输入身份验证凭据,即auth用户名和密码。

@Override
public void onReceivedHttpAuthRequest(WebView view, HttpAuthHandler handler, String host, String realm) {
        final WebView mView = view;
        final HttpAuthHandler mHandler = handler;

        final EditText usernameInput = new EditText(mActivity);
        usernameInput.setHint("Username");

        final EditText passwordInput = new EditText(mActivity);
        passwordInput.setHint("Password");
        passwordInput.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);

        LinearLayout ll = new LinearLayout(mActivity);
        ll.setOrientation(LinearLayout.VERTICAL);
        ll.addView(usernameInput);
        ll.addView(passwordInput);

        Builder authDialog = new AlertDialog
                .Builder(mActivity)
                .setTitle("Authentication")
                .setView(ll)
                .setCancelable(false)
                .setPositiveButton("OK", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int whichButton) {
                        mHandler.proceed(usernameInput.getText().toString(), passwordInput.getText().toString());
                        dialog.dismiss();
                    }
                })
                .setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int whichButton) {
                        dialog.dismiss();
                        mView.stopLoading();
                        onLoadListener.onAuthCancel((MyWebView)mView, mTitleTextView);
                    }
                });

        if(view!=null)
            authDialog.show();

    }

在提交请求时,请继续并加载网址。但是在我使用后退按钮(不是在后台发送)退出应用程序后,如果我再次启动它并加载相同的URL,则直接加载URL而不要求提供onReceivedHttpAuthRequest()的凭据再也不会被调用。

我还使用以下代码清除应用退出的凭据:

WebViewDatabase webDB = WebViewDatabase.getInstance(BrowserActivity.this);
    if(webDB!=null){
        if(webDB.hasFormData())
            webDB.clearFormData();
        if(webDB.hasUsernamePassword())
            webDB.clearUsernamePassword();
        if(webDB.hasHttpAuthUsernamePassword())
            webDB.clearHttpAuthUsernamePassword();
    }
webView.clearCache(true);

此外,我正在清除所有webview缓存,cookie和应用程序的缓存目录以及webview数据库:

BrowserActivity.this.deleteDatabase("webview.db");
BrowserActivity.this.deleteDatabase("webviewCache.db");

我不知道为什么会这样。有没有人可以帮助我。 至少在没有调用onReceivedHttpAuthRequest()的问题上?

3 个答案:

答案 0 :(得分:2)

  1. 在加载网址之前,请在http标头中设置授权信息

    映射extraHeaders = new HashMap<>(); extraHeaders.put("授权"," TlRM"); //值是随便设置的。
    webView.loadUrl(url,extraHeaders);

  2. WebViewClient中的
  3. @覆盖 public void onReceivedHttpAuthRequest(WebView视图,HttpAuthHandler处理程序,
                           String host,String realm){     view.loadUrl(url); //重新加载网址     handler.proceed(account,password); }

  4. 我解决了这个问题,但我不会说英语。 希望它可以帮到你。

答案 1 :(得分:0)

原因是webview存储以前的连接cookie。因此,我们需要手动清除它们并存储当前网址的新cookie数据。我们可以这样做。

HttpURLConnection connection = null;
    try {
        URL urls = new URL(url);
        String authStr = "";
        if (!params.isEmpty()) {
            authStr = params.get(0).getValue() + ":"
                    + params.get(1).getValue();
        }

        String authEncoded = Base64.encodeBytes(authStr.getBytes());

        connection = (HttpURLConnection) urls
                .openConnection();
        connection.setConnectTimeout(5100);
        connection.setReadTimeout(5200);
        connection.setDoOutput(false);
        connection.setRequestProperty("Authorization", "Basic "
                + authEncoded);
        CookieManager cookieManager = CookieManager.getInstance();
        String cookie = cookieManager.getCookie(connection.getURL().toString());
        if (cookie != null) {
            connection.setRequestProperty("Cookie", cookie);
        }
        connection.connect();

        responseCode = connection.getResponseCode();
        InputStream content = connection.getInputStream();
        response = convertStreamToString(content);
        content.close();

        // Get cookies from responses and save into the cookie manager. session is created only in rest call url
        List<String> cookieList = connection.getHeaderFields().get("Set-Cookie");
        if (cookieList != null) {
            for (String cookieTemp : cookieList) {
                cookieManager.setCookie(connection.getURL().toString(), cookieTemp);
            }
        }

    }catch (SocketTimeoutException es){
        response = ConnectionStatus.TIME_OUT.name();
    } catch (Exception e) {
        response = e.getMessage();
        e.printStackTrace();
    }
    finally {
        connection.disconnect();
    }

答案 2 :(得分:0)

我使用“ Authorization”标头而不是onReceivedHttpAuthRequest()解决了它