javascript - Android - Parse JS generated urls with JSOUP - Stack Overflow

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im trying to parse url generated by Bootstrap`s Bootpage.js which looks like but JSOUP cant parse it and showing main url. how to get normal link from Bootpage or how to make JSOUP to parse it.

Parsing code:

Jsoup.connect("").followRedirects(true).get();

im trying to parse url generated by Bootstrap`s Bootpage.js which looks like https://example./#page-2 but JSOUP cant parse it and showing main url. how to get normal link from Bootpage or how to make JSOUP to parse it.

Parsing code:

Jsoup.connect("https://example./#page-2").followRedirects(true).get();

• javascript
• java
• android
• web-scraping
• jsoup

Share Improve this question Follow edited Aug 30, 2016 at 11:34 Frederic Klein 2,87533 gold badges2424 silver badges3737 bronze badges asked Aug 25, 2016 at 8:20 ProphetProphet 7333 silver badges1212 bronze badges 7

• 1 Jsoup has no js engine. Without a link to a real website, it is hard to help, but the page is probably generated dynamically, so JSoup is not the right tool here (check the behaviour in your browser with disabled javascript). Try it with js capable headless browsers like HtmlUnit, PhantomJS, ... – Frederic Klein Commented Aug 25, 2016 at 8:40
• without JS it shows blank, not redirecting to url – Prophet Commented Aug 25, 2016 at 8:46
• So have you tried it with HtmlUnit? You can still use JSoup to parse the result (see: stackoverflow./questions/37670840/…). – Frederic Klein Commented Aug 26, 2016 at 6:02
• nope, does not work, someone said its framework hashed links. Bootpages framework, so is there any way to, well, handle hashed links – Prophet Commented Aug 26, 2016 at 16:01
• Still not willing to share a link? – Frederic Klein Commented Aug 26, 2016 at 16:05

 |  Show 2 more ments

1 Answer 1

Sorted by: Reset to default 7

(See UPDATE below, first/accepted solution didn't met the android requirement, but is left for reference.)

---

Desktop Solution

HtmlUnit doesn't seem able to handle this site (often the case, lately). So I don't have a plain java solution either, but you could use PhantomJS: download the binary for your os, create a script file, start the process from within your java code and parse the output with a dom parser like jsoup.

Script file (here called simple.js):

var page = require('webpage').create();
var fs = require('fs');
var system = require('system');

var url = "";
var fileName = "output";
// first parameter: url
// second parameter: filename for output
console.log("args length: " + system.args.length);

if (system.args.length > 1) {
    url=system.args[1];
}
if (system.args.length > 2){
    fileName=system.args[2];
}
if(url===""){
    phantom.exit();
}

page.settings.userAgent = 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36';
page.settings.loadImages = false; 

page.open(url, function(status) {
    console.log("Status: " + status);
    if(status === "success") {
        var path = fileName+'.html';
        fs.write(path, page.content, 'w');
    }
    phantom.exit();
});

Java code (example to get title and cover-url):

try {
    //change path to phantomjs binary and your script file
    String outputFileName = "srulad";
    String phantomJSPath = "phantomjs" + File.separator + "bin" + File.separator + "phantomjs";
    String scriptFile = "simple.js";

    String urlParameter = "http://srulad./#page-2";

    new File(outputFileName+".html").delete();

    Process process = Runtime.getRuntime().exec(phantomJSPath + " " + scriptFile + " " + urlParameter + " " + outputFileName);
    process.waitFor();

    Document doc = Jsoup.parse(new File(outputFileName + ".html"),"UTF-8"); // output.html is created by phantom.js, same path as page.js
    Elements elements = doc.select("#list_page-2 > div");

    for (Element element : elements) {
        System.out.println(element.select("div.l-description.float-left > div:nth-child(1) > a").first().attr("title"));
        System.out.println(element.select("div.l-image.float-left > a > img.lazy").first().attr("data-original"));
    }
} catch (IOException | InterruptedException e) {
    e.printStackTrace();
}

Output:

სიყვარული და მოწყალება / Love & Mercy
http://srulad./assets/uploads/42410_Love_and_Mercy.jpg
მუზა / The Muse
http://srulad./assets/uploads/43164_large_qRzsimNz0eDyFLFJcbVLIxlqii.jpg
...

---

UPDATE

Parsing of websites with javascript based dynamic content in Android is possible using WebView and jsoup. The following example app uses a javascript enabled WebView to render a Javascript dependent website. With a JavascriptInterface the html source is returned, parsed with jsoup and as a proof of concept the titles and the urls to the cover-images are used to populate a ListView. The buttons decrement or increment the page number triggering an update of the ListView. Note: tested on an Android 5.1.1/API 22 device.

add internet permission to your AndroidManifest.xml

<uses-permission android:name="android.permission.INTERNET" />

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android./apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <LinearLayout
        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/page_down"
            android:id="@+id/buttonDown"
            android:layout_weight="0.5" />

        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/page_up"
            android:id="@+id/buttonUp"
            android:layout_weight="0.5" />
    </LinearLayout>

    <ListView
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:id="@+id/listView"
        android:layout_gravity="bottom"
        android:layout_weight="0.5" />
</LinearLayout>

MainActivity.java

public class MainActivity extends AppCompatActivity {

    private final Handler uiHandler = new Handler();
    private ArrayAdapter<String> adapter;
    private ArrayList<String> entries = new ArrayList<>();
    private ProgressDialog progressDialog;

    private class JSHtmlInterface {
        @android.webkit.JavascriptInterface
        public void showHTML(String html) {
            final String htmlContent = html;

            uiHandler.post(
                new Runnable() {
                    @Override
                    public void run() {
                        Document doc = Jsoup.parse(htmlContent);
                        Elements elements = doc.select("#online_movies > div > div");
                        entries.clear();
                        for (Element element : elements) {
                            String title = element.select("div.l-description.float-left > div:nth-child(1) > a").first().attr("title");
                            String imgUrl = element.select("div.l-image.float-left > a > img.lazy").first().attr("data-original");
                            entries.add(title + "\n" + imgUrl);
                        }
                        adapter.notifyDataSetChanged();
                    }
                }
            );
        }
    }


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        ListView listView = (ListView) findViewById(R.id.listView);
        adapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, android.R.id.text1, entries);
        listView.setAdapter(adapter);

        progressDialog = ProgressDialog.show(this, "Loading","Please wait...", true);
        progressDialog.setCancelable(false);

        try {
            final WebView browser = new WebView(this);
            browser.setVisibility(View.INVISIBLE);
            browser.setLayerType(View.LAYER_TYPE_NONE,null);
            browser.getSettings().setJavaScriptEnabled(true);
            browser.getSettings().setBlockNetworkImage(true);
            browser.getSettings().setDomStorageEnabled(false);
            browser.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
            browser.getSettings().setLoadsImagesAutomatically(false);
            browser.getSettings().setGeolocationEnabled(false);
            browser.getSettings().setSupportZoom(false);

            browser.addJavascriptInterface(new JSHtmlInterface(), "JSBridge");

            browser.setWebViewClient(
                new WebViewClient() {

                    @Override
                    public void onPageStarted(WebView view, String url, Bitmap favicon) {
                        progressDialog.show();
                        super.onPageStarted(view, url, favicon);
                    }

                    @Override
                    public void onPageFinished(WebView view, String url) {
                        browser.loadUrl("javascript:window.JSBridge.showHTML('<html>'+document.getElementsByTagName('html')[0].innerHTML+'</html>');");
                        progressDialog.dismiss();
                    }
                }
            );

            findViewById(R.id.buttonDown).setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    uiHandler.post(new Runnable() {
                        @Override
                        public void run() {
                            int page = Integer.parseInt(browser.getUrl().split("-")[1]);
                            int newPage = page > 1 ? page-1 : 1;
                            browser.loadUrl("http://srulad./#page-" + newPage);
                            browser.loadUrl(browser.getUrl()); // not sure why this is needed, but doesn't update without it on my device
                            if(getSupportActionBar()!=null) getSupportActionBar().setTitle(browser.getUrl());
                        }
                    });
                }
            });

            findViewById(R.id.buttonUp).setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    uiHandler.post(new Runnable() {
                        @Override
                        public void run() {
                            int page = Integer.parseInt(browser.getUrl().split("-")[1]);
                            int newPage = page+1;
                            browser.loadUrl("http://srulad./#page-" + newPage);
                            browser.loadUrl(browser.getUrl()); // not sure why this is needed, but doesn't update without it on my device
                            if(getSupportActionBar()!=null) getSupportActionBar().setTitle(browser.getUrl());
                        }
                    });
                }
            });

            browser.loadUrl("http://srulad./#page-1");
            if(getSupportActionBar()!=null) getSupportActionBar().setTitle(browser.getUrl());

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

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