Example usage for java.net URL openConnection

Introduction

In this page you can find the example usage for java.net URL openConnection.

Prototype

public URLConnection openConnection() throws java.io.IOException

Source Link

Document

Returns a java.net.URLConnection URLConnection instance that represents a connection to the remote object referred to by the URL .

Usage

From source file:be.geecko.openlauncher.net.SuggestionsTask.java

private static String readUrl(String http) throws IOException {
    URL url = new URL(http);
    URLConnection connection = url.openConnection();
    InputStream in = connection.getInputStream();
    String encoding = connection.getContentEncoding();
    encoding = encoding == null ? "UTF-8" : encoding;
    return IOUtils.toString(in, encoding);
}

From source file:Main.java

private static boolean confirmDownload(Context context, String stringUrl) {
    try {//from w ww  .j a  va2  s .  c o  m
        URL url = new URL(stringUrl);
        HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
        long candidateDate = urlConnection.getLastModified();
        final SharedPreferences prefsManager = PreferenceManager
                .getDefaultSharedPreferences(context.getApplicationContext());

        final long savedDate = prefsManager.getLong(stringUrl, 0);

        urlConnection.disconnect();
        if (candidateDate <= savedDate) {
            return false;
        }
        timeToConfirm = candidateDate;

        return true;

    } catch (Throwable localThrowable) {

        localThrowable.printStackTrace();
        return false;

    }
}

From source file:Main.java

public static URI unredirect(URI uri) throws IOException {
    if (!REDIRECTOR_DOMAINS.contains(uri.getHost())) {
        return uri;
    }/*from  www.j a  va 2 s .c  o  m*/
    URL url = uri.toURL();

    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
    connection.setInstanceFollowRedirects(false);
    connection.setDoInput(false);
    connection.setRequestMethod("HEAD");
    connection.setRequestProperty("User-Agent", "ZXing (Android)");
    try {
        connection.connect();
        switch (connection.getResponseCode()) {
        case HttpURLConnection.HTTP_MULT_CHOICE:
        case HttpURLConnection.HTTP_MOVED_PERM:
        case HttpURLConnection.HTTP_MOVED_TEMP:
        case HttpURLConnection.HTTP_SEE_OTHER:
        case 307: // No constant for 307 Temporary Redirect ?
            String location = connection.getHeaderField("Location");
            if (location != null) {
                try {
                    return new URI(location);
                } catch (URISyntaxException e) {
                    // nevermind
                }
            }
        }
        return uri;
    } finally {
        connection.disconnect();
    }
}

From source file:com.tnc.android.graphite.utils.GraphiteConnection.java

private static BufferedReader getReader(String urlString) throws Exception {
    URL url = new URL(urlString);
    HttpURLConnection http = (HttpURLConnection) url.openConnection();
    http.setConnectTimeout(45000);// w ww  .  j a  v a 2  s  . c om
    http.setReadTimeout(45000);
    BufferedReader reader = new BufferedReader(new InputStreamReader(http.getInputStream()), 8192);
    return reader;
}

From source file:Main.java

private static HttpURLConnection initHttpURLConn(String requestURL)
        throws MalformedURLException, IOException, ProtocolException {
    URL url = new URL(requestURL);
    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
    connection.setConnectTimeout(TIME_OUT);
    connection.setReadTimeout(TIME_OUT);
    connection.setDoInput(true);//from w w w.  j  a va2 s.  com
    connection.setDoOutput(true);
    connection.setUseCaches(false);
    connection.setRequestMethod("POST");
    connection.setRequestProperty("Charset", CHARSET);
    connection.setRequestProperty("connection", "keep-alive");
    return connection;
}

From source file:Main.java

/**
 * @param url//from w w w.ja  v a2s .co  m
 * @return
 */
public static Bitmap getBitMapFromURL(URL url) {
    Bitmap mBitmap = null;

    try {
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setDoInput(true);
        conn.connect();
        conn.getContentLength();
        InputStream is = conn.getInputStream();
        BufferedInputStream bis = new BufferedInputStream(is);
        mBitmap = BitmapFactory.decodeStream(bis);
        bis.close();
        is.close();
    } catch (Exception e) {
        Log.e("Exception in MapScrollActivity.getBitmapFromURL", "" + e.getMessage());
        e.printStackTrace();
    }
    return mBitmap;
}

From source file:Main.java

public static void downloadImage(String imageUrl) {
    if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
        Log.d("TAG", "monted sdcard");
    } else {//from ww w . j av  a2s  .  c o  m
        Log.d("TAG", "has no sdcard");
    }
    HttpURLConnection con = null;
    FileOutputStream fos = null;
    BufferedOutputStream bos = null;
    BufferedInputStream bis = null;
    File imageFile = null;
    try {
        URL url = new URL(imageUrl);
        con = (HttpURLConnection) url.openConnection();
        con.setConnectTimeout(5 * 1000);
        con.setReadTimeout(15 * 1000);
        con.setDoInput(true);
        con.setDoOutput(true);
        bis = new BufferedInputStream(con.getInputStream());
        imageFile = new File(getImagePath(imageUrl));
        fos = new FileOutputStream(imageFile);
        bos = new BufferedOutputStream(fos);
        byte[] b = new byte[1024];
        int length;
        while ((length = bis.read(b)) != -1) {
            bos.write(b, 0, length);
            bos.flush();
        }
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        try {
            if (bis != null) {
                bis.close();
            }
            if (bos != null) {
                bos.close();
            }
            if (con != null) {
                con.disconnect();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    if (imageFile != null) {
    }
}

From source file:bakuposter.gcm.server.POST2GCMessage.java

public static void post(String apiKey, Content content) {

    try {/* www.ja  v a 2 s . c  o m*/
        URL url = new URL("https://android.googleapis.com/gcm/send");
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setRequestMethod("POST");
        conn.setRequestProperty("Content-Type", "application/json");
        conn.setRequestProperty("Authorization", "key=" + apiKey);
        conn.setDoOutput(true);
        ObjectMapper mapper = new ObjectMapper();
        System.out.println(content.getRegistration_ids().get(0));
        DataOutputStream wr = new DataOutputStream(conn.getOutputStream());
        mapper.writeValue(wr, content);
        wr.flush();
        wr.close();
        int responseCode = conn.getResponseCode();
        System.out.println("responseCode = " + responseCode);
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

From source file:Main.java

public static String getHtml(String getUrl, String charsetName) {
    String html = "";
    URL url;
    try {/*w  w  w  .j  a  v  a2 s .  co m*/
        url = new URL(getUrl);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setRequestProperty("User-Agent", userAgent);
        connection.setRequestProperty("Connection", "Keep-Alive");
        connection.setRequestProperty("Cache-Control", "no-cache");
        connection.setReadTimeout(timeout);
        connection.setFollowRedirects(true);
        connection.connect();
        InputStream inStrm = connection.getInputStream();

        BufferedReader br = new BufferedReader(new InputStreamReader(inStrm, charsetName));
        String temp = "";

        while ((temp = br.readLine()) != null) {
            html = html + (temp + '\n');
        }
    } catch (Exception e) {
        e.printStackTrace();
    }

    return html;
}

From source file:com.grosscommerce.ICEcat.utilities.Downloader.java

private static HttpURLConnection prepareConnection(String urlFrom, String login, String pwd)
        throws ProtocolException, IOException, MalformedURLException {
    URL url = new URL(urlFrom);
    HttpURLConnection uc = (HttpURLConnection) url.openConnection();
    // set up url connection to get retrieve information back
    uc.setRequestMethod("GET");
    uc.setDoInput(true);//w  w  w.j av  a 2  s .c  o  m
    String val = (new StringBuffer(login).append(":").append(pwd)).toString();
    byte[] base = val.getBytes();
    String authorizationString = "Basic " + Base64.encodeBase64String(base);
    uc.setRequestProperty("Authorization", authorizationString);
    uc.setRequestProperty("Accept-Encoding", "gzip, xml");
    return uc;
}