Example usage for java.net URLConnection connect

Introduction

In this page you can find the example usage for java.net URLConnection connect.

Prototype

public abstract void connect() throws IOException;

Source Link

Document

Opens a communications link to the resource referenced by this URL, if such a connection has not already been established.

Usage

From source file:com.ocp.media.UriTexture.java

private static final BufferedInputStream createInputStreamFromRemoteUrl(String uri,
        ClientConnectionManager connectionManager) {
    InputStream contentInput = null;
    if (connectionManager == null) {
        try {/*from  w ww. j av  a  2  s  .c  o m*/
            URL url = new URI(uri).toURL();
            URLConnection conn = url.openConnection();
            conn.connect();
            contentInput = conn.getInputStream();
        } catch (Exception e) {
            Log.w(Gallery.TAG, TAG + ": " + "Request failed: " + uri);
            e.printStackTrace();
            return null;
        }
    } else {
        // We create a cancelable http request from the client
        final DefaultHttpClient mHttpClient = new DefaultHttpClient(connectionManager, HTTP_PARAMS);
        HttpUriRequest request = new HttpGet(uri);
        // Execute the HTTP request.
        HttpResponse httpResponse = null;
        try {
            httpResponse = mHttpClient.execute(request);
            HttpEntity entity = httpResponse.getEntity();
            if (entity != null) {
                // Wrap the entity input stream in a GZIP decoder if
                // necessary.
                contentInput = entity.getContent();
            }
        } catch (Exception e) {
            Log.w(Gallery.TAG, TAG + ": " + "Request failed: " + request.getURI());
            return null;
        }
    }
    if (contentInput != null) {
        return new BufferedInputStream(contentInput, 4096);
    } else {
        return null;
    }
}

---

From source file:com.cooliris.media.UriTexture.java

private static final BufferedInputStream createInputStreamFromRemoteUrl(String uri,
        ClientConnectionManager connectionManager) {
    InputStream contentInput = null;
    if (connectionManager == null) {
        try {// w  w w  . j a  v a2s  . c o  m
            URL url = new URI(uri).toURL();
            URLConnection conn = url.openConnection();
            conn.connect();
            contentInput = conn.getInputStream();
        } catch (Exception e) {
            Log.w(TAG, "Request failed: " + uri);
            e.printStackTrace();
            return null;
        }
    } else {
        // We create a cancelable http request from the client
        final DefaultHttpClient mHttpClient = new DefaultHttpClient(connectionManager, HTTP_PARAMS);
        HttpUriRequest request = new HttpGet(uri);
        // Execute the HTTP request.
        HttpResponse httpResponse = null;
        try {
            httpResponse = mHttpClient.execute(request);
            HttpEntity entity = httpResponse.getEntity();
            if (entity != null) {
                // Wrap the entity input stream in a GZIP decoder if
                // necessary.
                contentInput = entity.getContent();
            }
        } catch (Exception e) {
            Log.w(TAG, "Request failed: " + request.getURI());
            return null;
        }
    }
    if (contentInput != null) {
        return new BufferedInputStream(contentInput, 4096);
    } else {
        return null;
    }
}

---

From source file:com.norconex.commons.lang.url.URLStreamer.java

private static InputStream responseInputStream(URLConnection conn) throws IOException {
    conn.connect();
    return new AutoCloseInputStream(conn.getInputStream());
}

---

From source file:io.teak.sdk.NotificationBuilder.java

public static Notification createNativeNotification(final Context context, Bundle bundle,
        TeakNotification teakNotificaton) {
    NotificationCompat.Builder builder = new NotificationCompat.Builder(context);

    // Rich text message
    Spanned richMessageText = Html.fromHtml(teakNotificaton.message);

    // Configure notification behavior
    builder.setPriority(NotificationCompat.PRIORITY_MAX);
    builder.setDefaults(NotificationCompat.DEFAULT_ALL);
    builder.setOnlyAlertOnce(true);//from   www.  j  av a 2  s . c o  m
    builder.setAutoCancel(true);
    builder.setTicker(richMessageText);

    // Set small view image
    try {
        PackageManager pm = context.getPackageManager();
        ApplicationInfo ai = pm.getApplicationInfo(context.getPackageName(), 0);
        builder.setSmallIcon(ai.icon);
    } catch (Exception e) {
        Log.e(LOG_TAG, "Unable to load icon resource for Notification.");
        return null;
    }

    Random rng = new Random();

    // Create intent to fire if/when notification is cleared
    Intent pushClearedIntent = new Intent(
            context.getPackageName() + TeakNotification.TEAK_NOTIFICATION_CLEARED_INTENT_ACTION_SUFFIX);
    pushClearedIntent.putExtras(bundle);
    PendingIntent pushClearedPendingIntent = PendingIntent.getBroadcast(context, rng.nextInt(),
            pushClearedIntent, PendingIntent.FLAG_ONE_SHOT);
    builder.setDeleteIntent(pushClearedPendingIntent);

    // Create intent to fire if/when notification is opened, attach bundle info
    Intent pushOpenedIntent = new Intent(
            context.getPackageName() + TeakNotification.TEAK_NOTIFICATION_OPENED_INTENT_ACTION_SUFFIX);
    pushOpenedIntent.putExtras(bundle);
    PendingIntent pushOpenedPendingIntent = PendingIntent.getBroadcast(context, rng.nextInt(), pushOpenedIntent,
            PendingIntent.FLAG_ONE_SHOT);
    builder.setContentIntent(pushOpenedPendingIntent);

    // Because we can't be certain that the R class will line up with what is at SDK build time
    // like in the case of Unity et. al.
    class IdHelper {
        public int id(String identifier) {
            int ret = context.getResources().getIdentifier(identifier, "id", context.getPackageName());
            if (ret == 0) {
                throw new Resources.NotFoundException("Could not find R.id." + identifier);
            }
            return ret;
        }

        public int layout(String identifier) {
            int ret = context.getResources().getIdentifier(identifier, "layout", context.getPackageName());
            if (ret == 0) {
                throw new Resources.NotFoundException("Could not find R.layout." + identifier);
            }
            return ret;
        }
    }
    IdHelper R = new IdHelper(); // Declaring local as 'R' ensures we don't accidentally use the other R

    // Configure notification small view
    RemoteViews smallView = new RemoteViews(context.getPackageName(),
            Build.VERSION.SDK_INT >= Build.VERSION_CODES.M ? R.layout("teak_notif_no_title_v21")
                    : R.layout("teak_notif_no_title"));

    // Set small view image
    try {
        PackageManager pm = context.getPackageManager();
        ApplicationInfo ai = pm.getApplicationInfo(context.getPackageName(), 0);
        smallView.setImageViewResource(R.id("left_image"), ai.icon);
        builder.setSmallIcon(ai.icon);
    } catch (Exception e) {
        Log.e(LOG_TAG, "Unable to load icon resource for Notification.");
        return null;
    }

    // Set small view text
    smallView.setTextViewText(R.id("text"), richMessageText);

    // Check for Jellybean (API 16, 4.1)+ for expanded view
    RemoteViews bigView = null;
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN && teakNotificaton.longText != null
            && !teakNotificaton.longText.isEmpty()) {
        bigView = new RemoteViews(context.getPackageName(),
                Build.VERSION.SDK_INT >= Build.VERSION_CODES.M ? R.layout("teak_big_notif_image_text_v21")
                        : R.layout("teak_big_notif_image_text"));

        // Set big view text
        bigView.setTextViewText(R.id("text"), Html.fromHtml(teakNotificaton.longText));

        URI imageAssetA = null;
        try {
            imageAssetA = new URI(teakNotificaton.imageAssetA);
        } catch (Exception ignored) {
        }

        Bitmap topImageBitmap = null;
        if (imageAssetA != null) {
            try {
                URL aURL = new URL(imageAssetA.toString());
                URLConnection conn = aURL.openConnection();
                conn.connect();
                InputStream is = conn.getInputStream();
                BufferedInputStream bis = new BufferedInputStream(is);
                topImageBitmap = BitmapFactory.decodeStream(bis);
                bis.close();
                is.close();
            } catch (Exception ignored) {
            }
        }

        if (topImageBitmap == null) {
            try {
                InputStream istr = context.getAssets().open("teak_notif_large_image_default.png");
                topImageBitmap = BitmapFactory.decodeStream(istr);
            } catch (Exception ignored) {
            }
        }

        if (topImageBitmap != null) {
            // Set large bitmap
            bigView.setImageViewBitmap(R.id("top_image"), topImageBitmap);
        } else {
            Log.e(LOG_TAG, "Unable to load image asset for Notification.");
            // Hide pulldown
            smallView.setViewVisibility(R.id("pulldown_layout"), View.INVISIBLE);
        }
    } else {
        // Hide pulldown
        smallView.setViewVisibility(R.id("pulldown_layout"), View.INVISIBLE);
    }

    // Voodoo from http://stackoverflow.com/questions/28169474/notification-background-in-android-lollipop-is-white-can-we-change-it
    int topId = Resources.getSystem().getIdentifier("status_bar_latest_event_content", "id", "android");
    int topBigLayout = Resources.getSystem().getIdentifier("notification_template_material_big_media_narrow",
            "layout", "android");
    int topSmallLayout = Resources.getSystem().getIdentifier("notification_template_material_media", "layout",
            "android");

    RemoteViews topBigView = null;
    if (bigView != null && Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        // This is invisible inner view - to have media_actions in hierarchy
        RemoteViews innerTopView = new RemoteViews("android", topBigLayout);
        bigView.addView(android.R.id.empty, innerTopView);

        // This should be on top - we need status_bar_latest_event_content as top layout
        topBigView = new RemoteViews("android", topBigLayout);
        topBigView.removeAllViews(topId);
        topBigView.addView(topId, bigView);
    } else if (bigView != null) {
        topBigView = bigView;
    }

    // This should be on top - we need status_bar_latest_event_content as top layout
    RemoteViews topSmallView;
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        topSmallView = new RemoteViews("android", topSmallLayout);
        topSmallView.removeAllViews(topId);
        topSmallView.addView(topId, smallView);
    } else {
        topSmallView = smallView;
    }

    builder.setContent(topSmallView);

    Notification n = builder.build();
    if (topBigView != null && Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
        // Use reflection to avoid compile-time issues, we check minimum API version above
        try {
            Field bigContentViewField = n.getClass().getField("bigContentView");
            bigContentViewField.set(n, topBigView);
        } catch (Exception ignored) {
        }
    }

    return n;
}

---

From source file:org.wso2.carbon.apimgt.core.util.APIMWSDLUtils.java

/**
 * Retrieves the WSDL located in the provided URI ({@code wsdlUrl}
 *
 * @param wsdlUrl URL of the WSDL file//w  ww .  j  a  v a2  s.c  o  m
 * @return Content bytes of the WSDL file
 * @throws APIMgtWSDLException If an error occurred while retrieving the WSDL file
 */
public static byte[] getWSDL(String wsdlUrl) throws APIMgtWSDLException {
    ByteArrayOutputStream outputStream = null;
    InputStream inputStream = null;
    URLConnection conn;
    try {
        URL url = new URL(wsdlUrl);
        conn = url.openConnection();
        conn.setConnectTimeout(CONNECTION_TIMEOUT);
        conn.setReadTimeout(READ_TIMEOUT);
        conn.connect();

        outputStream = new ByteArrayOutputStream();
        inputStream = conn.getInputStream();
        IOUtils.copy(inputStream, outputStream);
        return outputStream.toByteArray();
    } catch (IOException e) {
        throw new APIMgtWSDLException("Error while reading content from " + wsdlUrl, e,
                ExceptionCodes.INVALID_WSDL_URL_EXCEPTION);
    } finally {
        if (outputStream != null) {
            IOUtils.closeQuietly(outputStream);
        }
        if (inputStream != null) {
            IOUtils.closeQuietly(inputStream);
        }
    }
}

---

From source file:de.schildbach.wallet.litecoin.ExchangeRatesProvider.java

private static Double getLycBtcRate() {
    try {//ww w .j  a  va  2 s .c o m
        final URL URL = new URL("http://pubapi.cryptsy.com/api.php?method=singlemarketdata&marketid=177");
        final URLConnection connection = URL.openConnection();
        connection.setConnectTimeout(TIMEOUT_MS);
        connection.setReadTimeout(TIMEOUT_MS);
        connection.connect();
        final StringBuilder content = new StringBuilder();

        Reader reader = null;
        try {
            reader = new InputStreamReader(new BufferedInputStream(connection.getInputStream(), 1024));
            IOUtils.copy(reader, content);

            final JSONObject head = new JSONObject(content.toString());
            final JSONObject o = head.getJSONObject("return").getJSONObject("markets").getJSONObject("LYC");
            final Double rate = o.getDouble("lasttradeprice");
            if (rate != null)
                return rate;
        } finally {
            if (reader != null)
                reader.close();
        }
    } catch (final IOException x) {
        x.printStackTrace();
    } catch (final JSONException x) {
        x.printStackTrace();
    }

    return null;
}

---

From source file:de.teamgrit.grit.preprocess.fetch.SvnFetcher.java

/**
 * checks if GRIT can connect to the remote SVN server.
 *
 * @param svnRepoAdress/*from   ww w .  j a  va2  s.  c om*/
 *            the adress of the remote
 * @return true if GRIT can connect to the SVN.
 * @throws SubmissionFetchingException
 *             If the URL to the SVN is invalid.
 */
private static boolean checkConnectionToRemoteSVN(String svnRepoAdress) throws SubmissionFetchingException {
    try {
        int connectionTimeoutMillis = 10000;
        if (!svnRepoAdress.startsWith("file://")) {
            URL svnRepoLocation = new URL(svnRepoAdress);
            URLConnection svnRepoConnection = svnRepoLocation.openConnection();
            svnRepoConnection.setConnectTimeout(connectionTimeoutMillis);
            svnRepoConnection.connect();
        }
        return true;
    } catch (MalformedURLException e) {
        throw new SubmissionFetchingException(
                "Bad URL specified. Can not connect to this URL: " + svnRepoAdress + e.getMessage());
    } catch (IOException e) {
        return false;
    }
}

---

From source file:de.schildbach.wallet.litecoin.ExchangeRatesProvider.java

private static Map<String, ExchangeRate> getBlockchainInfo() {
    try {//from w  ww . j  av a  2s .c om
        final URL URL = new URL("https://blockchain.info/ticker");
        final URLConnection connection = URL.openConnection();
        connection.setConnectTimeout(TIMEOUT_MS);
        connection.setReadTimeout(TIMEOUT_MS);
        connection.connect();
        final StringBuilder content = new StringBuilder();

        Reader reader = null;
        try {
            reader = new InputStreamReader(new BufferedInputStream(connection.getInputStream(), 1024));
            IOUtils.copy(reader, content);

            final Map<String, ExchangeRate> rates = new TreeMap<String, ExchangeRate>();
            final JSONObject head = new JSONObject(content.toString());
            for (final Iterator<String> i = head.keys(); i.hasNext();) {
                final String currencyCode = i.next();
                final JSONObject o = head.getJSONObject(currencyCode);
                final Double drate = o.getDouble("15m") * LycBtcRate;
                String rate = String.format("%.8f", drate);
                rate = rate.replace(",", ".");
                if (rate != null)
                    rates.put(currencyCode, new ExchangeRate(currencyCode, Utils.toNanoCoins(rate),
                            "cryptsy.com and " + URL.getHost()));
            }

            return rates;
        } finally {
            if (reader != null)
                reader.close();
        }
    } catch (final IOException x) {
        x.printStackTrace();
    } catch (final JSONException x) {
        x.printStackTrace();
    }

    return null;
}

---

From source file:cl.tide.fm.sensonet.SensonetClient.java

public static boolean netIsAvailable() {
    try {//from  w  w  w . ja  v a  2 s . com
        final URL url = new URL(baseUrl);
        final URLConnection conn = url.openConnection();
        conn.connect();
        return true;
    } catch (MalformedURLException e) {
        throw new RuntimeException(e);
    } catch (IOException e) {
        return false;
    }
}

---

From source file:com.qhn.bhne.xhmusic.utils.MyUtils.java

public static BufferedInputStream getInputStream(String musicPicRes) {
    URL iconUrl = null;// w ww .  ja  v a 2 s . co m
    try {
        iconUrl = new URL(musicPicRes);
        URLConnection conn = iconUrl.openConnection();
        HttpURLConnection http = (HttpURLConnection) conn;

        int length = http.getContentLength();

        conn.connect();
        // ??
        BufferedInputStream bis = new BufferedInputStream(conn.getInputStream(), length);
        return bis;
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

---

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