Example usage for java.net URL openConnection

List of usage examples for java.net URL openConnection

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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:com.uk_postcodes.api.Postcode.java

/**
 * Get the postcode closest to the location.
 * @param location The device's location
 * @return the closest postcode/*from ww w  . j  a v  a 2  s  .c o m*/
 * @throws Exception
 */
public static String forLocation(Location location) throws Exception {
    String address = String.format(CALL, location.getLatitude(), location.getLongitude());

    Log.d("Postcode", "Calling: " + address);

    URL callUrl = new URL(address);
    HttpURLConnection callConnection = (HttpURLConnection) callUrl.openConnection();
    // The ten-second rule:
    // If there's no data in 10s (or TIMEOUT), assume the worst.
    callConnection.setReadTimeout(10000);
    // Set the request method to GET.
    callConnection.setRequestMethod("GET");
    int code = callConnection.getResponseCode();
    if (code != HttpURLConnection.HTTP_OK) {
        throw new Exception("A non-200 code was returned: " + code);
    }

    String responseStr;
    responseStr = IOUtils.toString(callConnection.getInputStream());
    callConnection.disconnect();

    JsonParser jp = new JsonParser();
    JsonElement response = jp.parse(responseStr);
    return response.getAsJsonObject().get("postcode").getAsString();
}

From source file:Main.java

/**
 * Return '' or error message if error occurs during URL connection.
 * /*from w  ww . j a v a 2s. c  om*/
 * @param url   The URL to ckeck
 * @return
 */
public static String getUrlStatus(String url) {
    URL u;
    URLConnection conn;
    int connectionTimeout = 500;
    try {
        u = new URL(url);
        conn = u.openConnection();
        conn.setConnectTimeout(connectionTimeout);

        // TODO : set proxy

        if (conn instanceof HttpURLConnection) {
            HttpURLConnection httpConnection = (HttpURLConnection) conn;
            httpConnection.setInstanceFollowRedirects(true);
            httpConnection.connect();
            httpConnection.disconnect();
            // FIXME : some URL return HTTP200 with an empty reply from server 
            // which trigger SocketException unexpected end of file from server
            int code = httpConnection.getResponseCode();

            if (code == HttpURLConnection.HTTP_OK) {
                return "";
            } else {
                return "Status: " + code;
            }
        } // TODO : Other type of URLConnection
    } catch (Exception e) {
        e.printStackTrace();
        return e.toString();
    }

    return "";
}

From source file:test.LocationCrawler.java

private static String ProcessLocationRequest(String QueryItem) {
    try {/*from   w  w  w .j  a va2  s .com*/
        QueryItem = URLEncoder.encode(QueryItem, "ISO-8859-1");
        String URLStr = String.format(
                "https://maps.googleapis.com/maps/api/geocode/json?" + "address=%s&sensor=false&key=%s",
                QueryItem,
                //"AIzaSyAOkEu7MBxUj4t2pBq1GZ-0Td7cf7bOKTg");
                //"AIzaSyCvzTx408371P7CtoXN8BejAAmBa0NUZbc");
                "AIzaSyAIyQ3XaHrC9TQVMIs65IrwzREtnzqZRKw");
        URL url = new URL(URLStr);

        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setRequestMethod("GET");

        if (connection.getResponseCode() == 200) {
            InputStream is = connection.getInputStream();
            InputStreamReader isr = new InputStreamReader(is, "UTF-8");
            BufferedReader br = new BufferedReader(isr);
            String sb = "";
            String str;

            while ((str = br.readLine()) != null) {
                sb += (str);
            }

            br.close();

            return sb;
        } else {
            return "";
        }
    } catch (Exception e) {
        return "";
    }
}

From source file:com.pwned.utils.VersionCheck.java

private static void _versionCheck() throws IOException {
    URL myURL = new URL(Constants.VERSIONCHECK_URL);
    URLConnection ucon = myURL.openConnection();
    InputStream is = ucon.getInputStream();
    BufferedInputStream bis = new BufferedInputStream(is);
    ByteArrayBuffer baf = new ByteArrayBuffer(50);
    int current = 0;
    while ((current = bis.read()) != -1) {
        baf.append((byte) current);
    }/* w  ww .  j  a v a2s.  c  om*/
    Logger.log("start version check", new String(baf.toByteArray()));
    try {
        currentVersionName = Integer.parseInt(new String(baf.toByteArray()));
    } catch (Exception e) {
        currentVersionName = 1;
    }
    ((Activity) context).runOnUiThread(returnRes);
}

From source file:org.elegosproject.romupdater.DownloadManager.java

public static boolean checkHttpFile(String url) {
    try {/*from  w w w  . j a  v  a2  s . co m*/
        HttpParams httpParameters = new BasicHttpParams();
        HttpConnectionParams.setConnectionTimeout(httpParameters, 3000);
        Log.i(TAG, "Testing " + url + "...");
        URL theUrl = new URL(url);
        HttpURLConnection connection = (HttpURLConnection) theUrl.openConnection();
        if (connection.getResponseCode() == HttpURLConnection.HTTP_OK) {
            connection.disconnect();
        } else {
            Log.i(TAG, "HTTP Response code: " + connection.getResponseCode());
            return false;
        }
    } catch (IOException e) {
        Log.e(TAG, e.toString());
        return false;
    }
    return true;
}

From source file:ee.ria.xroad.common.conf.globalconf.ConfigurationLocation.java

/**
 * @return the connection used to connect to the download url
 * @throws IOException/*from  w  w  w . j  a  v a 2  s .co  m*/
 */
public static URLConnection getDownloadURLConnection(String urlStr) throws IOException {
    URL url = new URL(urlStr);
    URLConnection connection = url.openConnection();
    connection.setReadTimeout(READ_TIMEOUT);
    return connection;
}

From source file:me.sonarbeserk.lockup.utils.UUIDFetcher.java

private static HttpURLConnection createConnection(int page) throws Exception {
    URL url = new URL(PROFILE_URL + page);
    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
    connection.setRequestMethod("POST");
    connection.setRequestProperty("Content-Type", "application/json");
    connection.setUseCaches(false);/* w  w  w.  j  a  va  2s.  c o  m*/
    connection.setDoInput(true);
    connection.setDoOutput(true);
    return connection;
}

From source file:Main.java

public static byte[] getHtmlByteArray(final String url) {
    URL htmlUrl = null;
    InputStream inStream = null;//from  www  .  j  a  v a 2s . c  o m
    try {
        htmlUrl = new URL(url);
        URLConnection connection = htmlUrl.openConnection();
        HttpURLConnection httpConnection = (HttpURLConnection) connection;
        int responseCode = httpConnection.getResponseCode();
        if (responseCode == HttpURLConnection.HTTP_OK) {
            inStream = httpConnection.getInputStream();
        }
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    byte[] data = inputStreamToByte(inStream);

    return data;
}

From source file:Main.java

public static String getPosthtml(String posturl, String postData, String encode) {

    String html = "";
    URL url;
    try {//from   w ww.  j ava  2s  .  co m
        url = new URL(posturl);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();

        connection.setRequestMethod("POST");
        connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        connection.setRequestProperty("User-Agent", userAgent);

        String postDataStr = postData;
        byte[] bytes = postDataStr.getBytes("utf-8");
        connection.setRequestProperty("Content-Length", "" + bytes.length);
        connection.setRequestProperty("Connection", "Keep-Alive");
        connection.setRequestProperty("Cache-Control", "no-cache");
        connection.setDoOutput(true);
        connection.setReadTimeout(timeout);
        connection.setFollowRedirects(true);
        connection.connect();
        OutputStream outStrm = connection.getOutputStream();
        outStrm.write(bytes);
        outStrm.flush();
        outStrm.close();
        InputStream inStrm = connection.getInputStream();

        BufferedReader br = new BufferedReader(new InputStreamReader(inStrm, encode));

        String temp = "";
        while ((temp = br.readLine()) != null) {
            html += (temp + '\n');
        }
        br.close();
        connection.disconnect();

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

}

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

protected static String updateHelper(String jsonPayload) throws IOException {
    // Server URL setup
    String _url = getBaseUri().build().toString();

    // Establish connection
    URL url = new URL(_url);
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();

    // add request header
    conn.setRequestMethod(IRequest.PUT);
    addRequestHeader(conn, true);/*from  w  ww .j  a  v a 2s.c  o m*/

    int responseCode = sendPostPayload(conn, jsonPayload);
    String response = getServerResponse(conn);
    conn.disconnect();
    return response;
}