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:mc.lib.network.NetworkHelper.java

public static String getAsText(String url, String encoding) {
    InputStream is = null;/*w w w  .  ja  va 2  s  . com*/
    try {
        URLConnection c = new URL(url).openConnection();
        c.connect();
        is = c.getInputStream();
        if (c.getContentEncoding() != null)
            encoding = c.getContentEncoding();
        return StreamHelper.readNetworkStream(is, encoding, c.getReadTimeout());
    } catch (MalformedURLException e) {
        Log.e(LOGTAG, "Wrong url format", e);
    } catch (Exception e) {
        Log.e(LOGTAG, "Cannot get text", e);
    } finally {
        StreamHelper.close(is);
    }
    return null;
}

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From source file:com.wishlist.Utility.java

public static Bitmap getBitmap(String url) {
    Bitmap bm = null;/*from   ww w. ja  va 2 s  . co m*/
    try {

        URL aURL = new URL(url);
        URLConnection conn = aURL.openConnection();
        conn.connect();
        InputStream is = conn.getInputStream();
        BufferedInputStream bis = new BufferedInputStream(is);
        bm = BitmapFactory.decodeStream(new FlushedInputStream(is));
        bis.close();
        is.close();
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        if (httpclient != null) {
            httpclient.close();
        }
    }
    return bm;
}

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From source file:com.example.facebook_photo.Utility.java

public static Bitmap getBitmap(String url) {
    Bitmap bm = null;/*from ww  w .j  a v  a 2 s  .c om*/
    try {
        URL aURL = new URL(url);
        URLConnection conn = aURL.openConnection();
        conn.connect();
        InputStream is = conn.getInputStream();
        BufferedInputStream bis = new BufferedInputStream(is);
        bm = BitmapFactory.decodeStream(new FlushedInputStream(is));
        bis.close();
        is.close();
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        if (httpclient != null) {
            httpclient.close();
        }
    }
    return bm;
}

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From source file:ubic.gemma.core.loader.entrez.EutilFetch.java

private static Document parseSUrlInputStream(URL url)
        throws SAXException, IOException, ParserConfigurationException {
    DocumentBuilder builder = EutilFetch.factory.newDocumentBuilder();
    int tries = 0;

    while (true) {
        URLConnection conn = url.openConnection();
        conn.connect();
        try (InputStream is = conn.getInputStream()) {
            return builder.parse(is);
        } catch (IOException e) {
            tries = EutilFetch.tryAgainOrFail(tries, e);
        }//ww  w . j a  v a  2 s  . c o m
    }
}

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From source file:co.alligo.toasted.routes.Announce.java

public static boolean checkGameServer(String ip, String port) {
    boolean result;
    URL url;/*ww  w .  j a v a2  s . c o  m*/
    URLConnection urlConnection;
    DataInputStream dis;

    try {
        url = new URL("http://" + ip + ":" + port + "/");

        urlConnection = url.openConnection();
        urlConnection.connect();

        result = true;
    } catch (IOException ioe) {
        result = false;
    }
    return result;
}

---

From source file:net.amigocraft.mpt.command.InstallCommand.java

@SuppressWarnings("unchecked")
public static void downloadPackage(String id) throws MPTException {
    JSONObject packages = (JSONObject) Main.packageStore.get("packages");
    if (packages != null) {
        JSONObject pack = (JSONObject) packages.get(id);
        if (pack != null) {
            if (pack.containsKey("name") && pack.containsKey("version") && pack.containsKey("url")) {
                if (pack.containsKey("sha1") || !Config.ENFORCE_CHECKSUM) {
                    String name = pack.get("name").toString();
                    String version = pack.get("version").toString();
                    String fullName = name + " v" + version;
                    String url = pack.get("url").toString();
                    String sha1 = pack.containsKey("sha1") ? pack.get("sha1").toString() : "";
                    if (pack.containsKey("installed")) { //TODO: compare versions
                        throw new MPTException(ID_COLOR + name + ERROR_COLOR + " is already installed");
                    }//from   w w w. j  av a2 s . c o m
                    try {
                        URLConnection conn = new URL(url).openConnection();
                        conn.connect();
                        ReadableByteChannel rbc = Channels.newChannel(conn.getInputStream());
                        File file = new File(Main.plugin.getDataFolder(),
                                "cache" + File.separator + id + ".zip");
                        file.setReadable(true, false);
                        file.setWritable(true, false);
                        file.getParentFile().mkdirs();
                        file.createNewFile();
                        FileOutputStream os = new FileOutputStream(file);
                        os.getChannel().transferFrom(rbc, 0, MiscUtil.getFileSize(new URL(url)));
                        os.close();
                        if (!sha1.isEmpty() && !sha1(file.getAbsolutePath()).equals(sha1)) {
                            file.delete();
                            throw new MPTException(ERROR_COLOR + "Failed to install package " + ID_COLOR
                                    + fullName + ERROR_COLOR + ": checksum mismatch!");
                        }
                    } catch (IOException ex) {
                        throw new MPTException(
                                ERROR_COLOR + "Failed to download package " + ID_COLOR + fullName);
                    }
                } else
                    throw new MPTException(ERROR_COLOR + "Package " + ID_COLOR + id + ERROR_COLOR
                            + " is missing SHA-1 checksum! Aborting...");
            } else
                throw new MPTException(ERROR_COLOR + "Package " + ID_COLOR + id + ERROR_COLOR
                        + " is missing required elements!");
        } else
            throw new MPTException(ERROR_COLOR + "Cannot find package with id " + ID_COLOR + id);
    } else {
        throw new MPTException(ERROR_COLOR + "Package store is malformed!");
    }
}

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From source file:org.talend.mdm.bulkload.client.BulkloadClientTest.java

private static boolean isServerRunning(String serverURL) {
    boolean isServerRunning = false;
    try {//from www . j  a  v  a2 s . c om
        URL testURL = new URL(serverURL);
        URLConnection urlConnection = testURL.openConnection();
        urlConnection.connect();
        isServerRunning = true;
    } catch (IOException e) {
        System.out.println("Server is not running on '" + serverURL + "', skip this test.");
    }
    return isServerRunning;
}

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From source file:org.kalypso.commons.java.net.UrlUtilities.java

/**
 * Tires to find a 'lastModified' timestamp from an {@link URL}.
 *///ww w .j a v  a  2  s  . co  m
public static Date lastModified(final URL location) {
    if (location == null)
        return null;

    try {
        final URLConnection connection = location.openConnection();
        connection.connect();

        final long lastModified = connection.getLastModified();
        // BUGFIX: some URLConnection implementations (such as eclipse resource-protokoll)
        // do not return lastModified correctly. If we have such a case, we try some more...
        if (lastModified != 0)
            return new Date(lastModified);

        final File file = FileUtils.toFile(location);
        if (file != null)
            return new Date(file.lastModified());

        final IPath path = ResourceUtilities.findPathFromURL(location);
        if (path == null)
            return null;

        final File resourceFile = ResourceUtilities.makeFileFromPath(path);
        return new Date(resourceFile.lastModified());
    } catch (final IOException e) {
        // ignore, some resources cannot be checked at all
    }

    return null;
}

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From source file:com.bjorsond.android.timeline.sync.ServerUploader.java

private static boolean fileExistsOnServer(String URLName) {
    URL url;//from  ww  w .  j  a  va 2  s.co m
    try {
        url = new URL(URLName);
        URLConnection connection = url.openConnection();

        connection.connect();

        // Cast to a HttpURLConnection
        if (connection instanceof HttpURLConnection) {
            HttpURLConnection httpConnection = (HttpURLConnection) connection;

            int code = httpConnection.getResponseCode();

            if (code == 200)
                return true;
        } else {
            System.err.println("error - not a http request!");
        }
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

    return false;
}

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From source file:com.sencko.basketball.stats.advanced.FIBAJsonParser.java

private static Game readGameFromNet(String location) throws IOException, MalformedURLException {
    InputStream jsonInputStream;//from ww  w.j  av a 2 s .c o  m
    String prefix = "http://webcast-a.live.sportingpulseinternational.com/matches/";
    String suffix = "//data.json";
    String html_suffix = "//index.html";
    URL url = new URL(prefix + location + suffix);

    logger.log(Level.FINEST, "Downloading file {0} from internet", url.toString());
    URLConnection connection = url.openConnection();
    connection.connect();
    jsonInputStream = connection.getInputStream();

    try {
        Game game = readGameFromStream(jsonInputStream);
        try {
            URL html_url = new URL(prefix + location + html_suffix);
            String html = IOUtils.toString(html_url, "UTF-8");
            Matcher match = teamAndTime.matcher(html);
            if (match.matches()) {

                game.getTm().get(1).setTeam(match.group(1));
                game.getTm().get(2).setTeam(match.group(2));
                Calendar calendar = Calendar.getInstance(); //TimeZone.getTimeZone("EET")
                calendar.set(Integer.parseInt(match.group(7)), Integer.parseInt(match.group(6)) - 1,
                        Integer.parseInt(match.group(5)), Integer.parseInt(match.group(3)),
                        Integer.parseInt(match.group(4)));
                game.setDate(calendar.getTime());

            }
        } catch (Exception ex) {
            ex.printStackTrace();
        }
        return game;
    } finally {
        jsonInputStream.close();
    }
}

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