无法在 Android WebView 中加载相对路径 URL

Question

我有一个遥控器 URL，我想在我的网络视图中加载它。此页面受 headers 保护。该页面正在加载，但未加载我正在尝试加载的 HTML 内的相对 URLS。

相同的 URL 在网络上运行良好，但无法在此处加载。主要问题是它没有加载 java 脚本文件。

这是我的代码：

    WebSettings webViewSettings = webView.getSettings();
    webViewSettings.setJavaScriptEnabled(true);
    webViewSettings.setDomStorageEnabled(true);
    webViewSettings.setSupportZoom(true);
    webViewSettings.setBuiltInZoomControls(true);
    webViewSettings.setDisplayZoomControls(true);
    webViewSettings.setAllowFileAccess(true);
    webViewSettings.setLoadWithOverviewMode(true);
    webViewSettings.setUseWideViewPort(true);
    webViewSettings.setPluginState(WebSettings.PluginState.ON);


    webView.setWebViewClient(new WebViewClient() {

        @Override
        public void onPageFinished(WebView view, String url) {
            super.onPageFinished(view, url);
            Toast.makeText(Report.this,"Finished loading",Toast.LENGTH_SHORT).show();
        }




        @Override
        public WebResourceResponse shouldInterceptRequest(WebView view, String url) {

            try {
                DefaultHttpClient client = new DefaultHttpClient();
                HttpGet httpGet = new HttpGet(flip_book);


                httpGet.setHeader("Cookie", "JSESSIONID=" + preferencesHelper.getPref("JSESSIONID") + "; X-CSRF-TOKEN=" + preferencesHelper.getPref(preferencesHelper.csrftoken));
                httpGet.setHeader("JSESSIONID", preferencesHelper.getPref("JSESSIONID"));
                httpGet.setHeader("X-CSRF-TOKEN", URLEncoder.encode(preferencesHelper.getPref(preferencesHelper.csrftoken), "UTF-8"));

                HttpResponse httpReponse = client.execute(httpGet);
                InputStream responseInputStream = httpReponse.getEntity().getContent();

                return new WebResourceResponse("text/html", "charset=UTF-8", responseInputStream);

                //text/html

            } catch (ClientProtocolException e) {
                //return null to tell WebView we failed to fetch it WebView should try again.
                return null;
            } catch (IOException e) {
                //return null to tell WebView we failed to fetch it WebView should try again.
                return null;
            }
        }


    });

    webView.loadData("<iframe src=\"" +
                    "" +
                    flip_book +
                    "\"></iframe>", "text/html",
            "utf-8");

请帮忙。

Answer 1

请尝试使用以下代码，也许它应该有效：

WebSettings webViewSettings = webView.getSettings();
    webViewSettings.setJavaScriptEnabled(true);
    webViewSettings.setDomStorageEnabled(true);
    webViewSettings.setSupportZoom(true);
    webViewSettings.setBuiltInZoomControls(true);
    webViewSettings.setDisplayZoomControls(true);
    webViewSettings.setAllowFileAccess(true);
    webViewSettings.setLoadWithOverviewMode(true);
    webViewSettings.setUseWideViewPort(true);
    webViewSettings.setPluginState(WebSettings.PluginState.ON);


    webView.setWebViewClient(new WebViewClient() {

        @Override
        public void onPageFinished(WebView view, String url) {
            super.onPageFinished(view, url);
            Toast.makeText(Report.this,"Finished loading",Toast.LENGTH_SHORT).show();
        }




        @Override
        public WebResourceResponse shouldInterceptRequest(WebView view, String url) {

            try {
                DefaultHttpClient client = new DefaultHttpClient();
                HttpGet httpGet = new HttpGet(flip_book);


                httpGet.setHeader("Cookie", "JSESSIONID=" + preferencesHelper.getPref("JSESSIONID") + "; X-CSRF-TOKEN=" + preferencesHelper.getPref(preferencesHelper.csrftoken));
                httpGet.setHeader("JSESSIONID", preferencesHelper.getPref("JSESSIONID"));
                httpGet.setHeader("X-CSRF-TOKEN", URLEncoder.encode(preferencesHelper.getPref(preferencesHelper.csrftoken), "UTF-8"));

                HttpResponse httpReponse = client.execute(httpGet);
                InputStream responseInputStream = httpReponse.getEntity().getContent();

                return new WebResourceResponse("text/html", "charset=UTF-8", responseInputStream);

                //text/html

            } catch (ClientProtocolException e) {
                //return null to tell WebView we failed to fetch it WebView should try again.
                return null;
            } catch (IOException e) {
                //return null to tell WebView we failed to fetch it WebView should try again.
                return null;
            }
        }


    });

    webView.loadDataWithBaseURL("<iframe src=\"" +
                    "" +
                    flip_book +
                    "\"></iframe>", "text/html",
            "utf-8",null);

Answer 2

你能用 OkHTTP 试一下吗:

loader.showLoader();

    webView.setWebViewClient(new WebViewClient() {



        @Override
        public void onPageFinished(WebView view, String url) {
            super.onPageFinished(view, url);
            loader.dismissLoader();
        }

        @Override
        public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error) {
            super.onReceivedError(view, request, error);
            loader.dismissLoader();
            showAlert("Something went wrong","Ok");
        }

        @Override
        public WebResourceResponse shouldInterceptRequest(WebView view, WebResourceRequest request) {

            try {

                String url = request.getUrl().toString();

                return getNewResponse(url);

            }  catch (Exception e) {
                //return null to tell WebView we failed to fetch it WebView should try again.
                return null;
            }
        }


        private WebResourceResponse getNewResponse(String url) {

            try {
                OkHttpClient httpClient = new OkHttpClient();

                Request request = new Request.Builder()
                        .url(url.trim())
                        .addHeader("Cookie", "JSESSIONID=" + preferencesHelper.getPref("JSESSIONID") + "; X-CSRF-TOKEN=" + preferencesHelper.getPref(preferencesHelper.csrftoken))
                        .addHeader("JSESSIONID", preferencesHelper.getPref("JSESSIONID"))
                        .addHeader("X-CSRF-TOKEN", URLEncoder.encode(preferencesHelper.getPref(preferencesHelper.csrftoken), "UTF-8")).build();

                Response response = httpClient.newCall(request).execute();

                return new WebResourceResponse(
                        null,
                        response.header("content-encoding", "utf-8"),
                        response.body().byteStream()
                );

            } catch (Exception e) {
                return null;
            }

        }




    });



    webView.getSettings().setJavaScriptEnabled(true);
    webView.getSettings().setSupportZoom(true);
    webView.getSettings().setBuiltInZoomControls(true);
    webView.getSettings().setDisplayZoomControls(true);
    webView.getSettings().setUseWideViewPort(true);


    webView.loadUrl(flip_book);

无法在 Android WebView 中加载相对路径 URL

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