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:AIR.Common.Web.FileFtpHandler.java

public static InputStream openStream(URI requestUri) throws FtpResourceException {
    try {/*from  w w w.jav  a2 s .c o m*/
        URL url = requestUri.toURL();
        URLConnection urlc = url.openConnection();
        return urlc.getInputStream();
    } catch (IOException exp) {
        throw new FtpResourceException(exp);
    }
}

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

public static boolean checkGameServer(String ip, String port) {
    boolean result;
    URL url;
    URLConnection urlConnection;//from  www . ja v a 2s .co m
    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:com.alexoree.jenkins.Main.java

private static String download(String localName, String remoteUrl) throws Exception {
    URL obj = new URL(remoteUrl);
    HttpURLConnection conn = (HttpURLConnection) obj.openConnection();
    conn.setReadTimeout(5000);/* www  .  ja  v  a2 s.  c  o m*/

    System.out.println("Request URL ... " + remoteUrl);

    boolean redirect = false;

    // normally, 3xx is redirect
    int status = conn.getResponseCode();
    if (status != HttpURLConnection.HTTP_OK) {
        if (status == HttpURLConnection.HTTP_MOVED_TEMP || status == HttpURLConnection.HTTP_MOVED_PERM
                || status == HttpURLConnection.HTTP_SEE_OTHER)
            redirect = true;
    }

    if (redirect) {

        // get redirect url from "location" header field
        String newUrl = conn.getHeaderField("Location");

        // get the cookie if need, for login
        String cookies = conn.getHeaderField("Set-Cookie");

        // open the new connnection again
        conn = (HttpURLConnection) new URL(newUrl).openConnection();

        String version = newUrl.substring(newUrl.lastIndexOf("/", newUrl.lastIndexOf("/") - 1) + 1,
                newUrl.lastIndexOf("/"));
        String pluginname = localName.substring(localName.lastIndexOf("/") + 1);
        String ext = "";
        if (pluginname.endsWith(".war"))
            ext = ".war";
        else
            ext = ".hpi";

        pluginname = pluginname.replace(ext, "");
        localName = localName.replace(pluginname + ext,
                "/download/plugins/" + pluginname + "/" + version + "/");
        new File(localName).mkdirs();
        localName += pluginname + ext;
        System.out.println("Redirect to URL : " + newUrl);

    }
    if (new File(localName).exists()) {
        System.out.println(localName + " exists, skipping");
        return localName;
    }

    byte[] buffer = new byte[2048];

    FileOutputStream baos = new FileOutputStream(localName);
    InputStream inputStream = conn.getInputStream();
    int totalBytes = 0;
    int read = inputStream.read(buffer);
    while (read > 0) {
        totalBytes += read;
        baos.write(buffer, 0, read);
        read = inputStream.read(buffer);
    }
    System.out.println("Retrieved " + totalBytes + "bytes");

    return localName;

}

From source file:com.att.ads.sample.SpeechAuth.java

/**
 * Sets up an OAuth client credentials authentication.
 * Follow this with a call to fetchTo() to actually load the data.
 * @param oauthService the URL of the OAuth client credentials service
 * @param apiKey the OAuth client ID//from   www  .j  av  a  2s  .  co m
 * @param apiSecret the OAuth client secret
 * @throws IllegalArgumentException for bad URL, etc.
**/
public static SpeechAuth forService(String oauthService, String oauthScope, String apiKey, String apiSecret)
        throws IllegalArgumentException {
    try {
        URL url = new URL(oauthService);
        HttpURLConnection request = (HttpURLConnection) url.openConnection();
        String data = String.format(Locale.US, OAUTH_DATA, oauthScope, apiKey, apiSecret);
        byte[] bytes = data.getBytes("UTF8");
        request.setConnectTimeout(CONNECT_TIMEOUT);
        request.setReadTimeout(READ_TIMEOUT);
        return new SpeechAuth(request, bytes);
    } catch (IOException e) {
        throw new IllegalArgumentException(e);
    } catch (ClassCastException e) {
        throw new IllegalArgumentException("URL must be HTTP: " + oauthService, e);
    }
}

From source file:jp.seikeidenron.androidtv.common.Utils.java

public static JSONObject parseUrl(String urlString) {
    Log.v(TAG, "Parse URL: " + urlString);
    BufferedReader reader = null;

    try {//  ww w .  j a va 2 s .c  o m
        java.net.URL url = new java.net.URL(urlString);
        URLConnection urlConnection = url.openConnection();
        reader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
        //urlConnection.getInputStream(), "iso-8859-1"));
        return convertBufferedReaderToJSONObject(reader);
    } catch (Exception e) {
        Log.w(TAG, "Failed to parse the json for media list", e);
        return null;
    } finally {
        if (null != reader) {
            try {
                reader.close();
            } catch (IOException e) {
                Log.w(TAG, "JSON feed closed", e);
            }
        }
    }
}

From source file:net.meltdowntech.steamstats.SteamUser.java

public static List<SteamUser> fetchUsers(List<Long> ids) {
    List<SteamUser> users = new ArrayList<>();
    int queries = (int) Math.ceil(ids.size() / 100.0);

    //Query every hundred users
    Util.printDebug("Fetching users");
    Util.printInfo(String.format("%d user%s allotted", ids.size(), ids.size() == 1 ? "" : "s"));
    Util.printDebug(String.format("%d quer%s allotted", queries, queries == 1 ? "y" : "ies"));
    for (int x = 0; x < queries; x++) {
        //Create steam ids query string
        String steamIds = "&steamids=";
        for (int y = x * 100; y < (x + 1) * 100 && y < ids.size(); y++) {
            steamIds += ids.get(y) + ",";
        }/*from   w  ww. java 2  s  . c o m*/

        //Create query url
        String url = Steam.URL + Steam.PLAYER_DATA + "?key=" + Steam.KEY + steamIds;
        try {
            //Attempt connection and parse
            URL steam = new URL(url);
            URLConnection steamConn = steam.openConnection();
            Reader steamReader = new InputStreamReader(steamConn.getInputStream());
            JSONTokener steamTokener = new JSONTokener(steamReader);
            JSONObject data = (JSONObject) steamTokener.nextValue();
            JSONObject response = data.getJSONObject("response");
            JSONArray players = response.getJSONArray("players");

            //Parse each player
            for (int y = 0; y < players.length(); y++) {
                JSONObject player = players.getJSONObject(y);
                SteamUser user = new SteamUser();

                //Parse each field
                Iterator keys = player.keys();
                while (keys.hasNext()) {
                    String key = (String) keys.next();
                    user.values.put(key, player.get(key));
                }
                users.add(user);
            }
        } catch (MalformedURLException ex) {
            Util.printError("Invalid URL");
        } catch (IOException | JSONException ex) {
            Util.printError("Invalid data");
        } catch (Exception ex) {
            Util.printError("Generic error");
        }

    }
    Util.printDebug("Done fetching users");
    return users;
}

From source file:Main.java

/**
 * Downloads a file via HTTP(S) GET to the given path. This function cannot be called from the
 * UI thread. Android does not allow it.
 *
 * @param urlString Url to the ressource to download.
 * @param file      file to be written to.
 * @param overwrite if file exists, overwrite?
 * @return flase if download was not successful. If successful, true.
 *//*from w  ww.  ja v  a2s .co  m*/
private static Boolean fileDownloadHttp(String urlString, File file, Boolean overwrite) {
    HashMap<String, String> result = null;
    URL url = null;
    //        File temp;

    try {
        url = new URL(urlString);

        HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
        urlConnection.setRequestMethod("GET");
        urlConnection.setReadTimeout(200000);
        urlConnection.connect();
        InputStream in = new BufferedInputStream(urlConnection.getInputStream());

        FileOutputStream outputStream = new FileOutputStream(file);

        int read = 0;
        byte[] bytes = new byte[1024];

        while ((read = in.read(bytes)) != -1) {
            outputStream.write(bytes, 0, read);
        }

        in.close();
        outputStream.close();
        urlConnection.disconnect();
    } catch (MalformedURLException e) {
        e.printStackTrace();
        return false;
    } catch (IOException e) {
        e.printStackTrace();
        return false;
    }
    Log.d(TAG, "File download: " + file.getAbsolutePath() + url.getFile() + "overwrite " + overwrite
            + "exists? " + file.exists());
    return true;
}

From source file:com.ct855.util.HttpsClientUtil.java

public static String postUrl(String url, Map<String, String> params)
        throws IOException, NoSuchAlgorithmException, KeyManagementException, NoSuchProviderException {
    //SSLContext??
    TrustManager[] trustAllCerts = new TrustManager[] { new MyX509TrustManager() };
    SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");
    sslContext.init(null, trustAllCerts, new java.security.SecureRandom());

    //SSLContextSSLSocketFactory
    SSLSocketFactory ssf = sslContext.getSocketFactory();
    String data = "";
    for (String key : params.keySet()) {
        data += "&" + URLEncoder.encode(key, "UTF-8") + "=" + URLEncoder.encode(params.get(key), "UTF-8");
    }/*from w w  w.java2 s  .  c  o m*/
    data = data.substring(1);

    System.out.println("postUrl=>data:" + data);
    URL aURL = new java.net.URL(url);
    HttpsURLConnection aConnection = (HttpsURLConnection) aURL.openConnection();
    aConnection.setSSLSocketFactory(ssf);
    aConnection.setDoOutput(true);
    aConnection.setDoInput(true);
    aConnection.setRequestMethod("POST");
    OutputStreamWriter streamToAuthorize = new java.io.OutputStreamWriter(aConnection.getOutputStream());
    streamToAuthorize.write(data);
    streamToAuthorize.flush();
    streamToAuthorize.close();
    InputStream resultStream = aConnection.getInputStream();
    BufferedReader aReader = new java.io.BufferedReader(new java.io.InputStreamReader(resultStream));
    StringBuffer aResponse = new StringBuffer();
    String aLine = aReader.readLine();
    while (aLine != null) {
        aResponse.append(aLine + "\n");
        aLine = aReader.readLine();
    }
    resultStream.close();
    return aResponse.toString();
}

From source file:flexpos.restfulConnection.java

public static String postRESTful(String RESTfull_URL, String data) {
    String state = "";
    try {/*from  w w w.j  av a2s . co m*/
        URL url = new URL(RESTfull_URL);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setRequestMethod("POST");
        connection.setUseCaches(false);
        connection.setDoInput(true);
        connection.setDoOutput(true);

        //Send request
        postRequest(connection, data);

        //Get Response
        state = postResponse(connection);

        if (connection != null) {
            connection.disconnect();
        }
    } catch (Exception ex) {
        Logger.getLogger(restfulConnection.class.getName()).log(Level.SEVERE, null, ex);
    }

    return state;
}

From source file:com.meetingninja.csse.database.ContactDatabaseAdapter.java

public static List<Contact> deleteContact(String relationID) throws IOException {

    String _url = getBaseUri().appendPath("Relations").appendPath(relationID).build().toString();
    URL url = new URL(_url);
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    conn.setRequestMethod(IRequest.DELETE);

    addRequestHeader(conn, false);/*from   w w  w . ja va  2 s.c om*/
    int responseCode = conn.getResponseCode();
    String response = getServerResponse(conn);

    boolean result = false;
    JsonNode tree = MAPPER.readTree(response);
    if (!response.isEmpty()) {
        if (!tree.has(Keys.DELETED)) {
            result = true;
        } else {
            logError(TAG, tree);
        }
    }

    conn.disconnect();
    SessionManager session = SessionManager.getInstance();
    List<Contact> contacts = getContacts(session.getUserID());
    return contacts;
}