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:org.apache.hadoop.hbase.http.log.LogLevel.java

private static void process(String urlstring) {
    try {//  ww  w . j a v a 2s . c  om
        URL url = new URL(urlstring);
        System.out.println("Connecting to " + url);
        URLConnection connection = url.openConnection();
        connection.connect();

        BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
        for (String line; (line = in.readLine()) != null;)
            if (line.startsWith(MARKER)) {
                System.out.println(TAG.matcher(line).replaceAll(""));
            }
        in.close();
    } catch (IOException ioe) {
        System.err.println("" + ioe);
    }
}

From source file:com.handlerexploit.news.utils.BitmapLruCache.java

/**
 * Convenience method to retrieve a bitmap image from a URL over the
 * network. The built-in methods do not seem to work, as they return a
 * FileNotFound exception.//from w w  w. j a  v  a 2s .c  o  m
 * 
 * Note that this does not perform any threading -- it blocks the call while
 * retrieving the data.
 * 
 * @param url
 *            The URL to read the bitmap from.
 * @return A Bitmap image or null if an error occurs.
 */
public static Bitmap readBitmapFromNetwork(String url) {
    InputStream inputStream = null;
    BufferedInputStream bufferedInputStream = null;
    Bitmap bitmap = null;

    try {
        URLConnection conn = new URL(url).openConnection();
        conn.connect();
        inputStream = conn.getInputStream();
        bufferedInputStream = new BufferedInputStream(inputStream, 8192);
        bitmap = BitmapFactory.decodeStream(bufferedInputStream);
    } catch (OutOfMemoryError e) {
        Log.d(TAG, "Ran out of memory.", e);
    } catch (Throwable e) {
        if (!e.getClass().equals(UnknownHostException.class)) {
            Log.d(TAG, "Could not get remote image : " + e.getClass().getSimpleName(), e);
        }
    } finally {
        try {
            if (inputStream != null) {
                inputStream.close();
            }
            if (bufferedInputStream != null) {
                bufferedInputStream.close();
            }
        } catch (IOException e) {
            Log.d(TAG, "Error closing stream.", e);
        }
    }
    return bitmap;
}

From source file:Main.java

public static String ParserHtml(String url) {
    String html = "";
    BufferedReader in = null;// w ww .j  a va 2 s.c o  m
    try {
        URL realUrl = new URL(url);
        URLConnection connection = realUrl.openConnection();
        connection.setRequestProperty("User-agent", "Mozilla/5.0");
        connection.connect();
        in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
        String line;
        while ((line = in.readLine()) != null) {
            html += line;
        }

    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        try {
            if (in != null) {
                in.close();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    return html;
}

From source file:fr.ign.cogit.geoxygene.appli.gl.program.GLProgramBuilder.java

private static boolean testURLValid(URL url) throws IOException {
    URLConnection huc = url.openConnection();
    try {//from   w ww  . jav a  2 s .c  o  m
        huc.connect();
        return true;
    } catch (IOException e) {
        return false;
    }
}

From source file:org.apache.hadoop.hbase.http.TestGlobalFilter.java

/** access a url, ignoring some IOException such as the page does not exist */
static void access(String urlstring) throws IOException {
    LOG.warn("access " + urlstring);
    URL url = new URL(urlstring);
    URLConnection connection = url.openConnection();
    connection.connect();

    try {/*from w  w  w  . j a v a  2  s . com*/
        BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
        try {
            for (; in.readLine() != null;)
                ;
        } finally {
            in.close();
        }
    } catch (IOException ioe) {
        LOG.warn("urlstring=" + urlstring, ioe);
    }
}

From source file:org.apache.hadoop.hbase.http.TestPathFilter.java

/** access a url, ignoring some IOException such as the page does not exist */
static void access(String urlstring) throws IOException {
    LOG.warn("access " + urlstring);
    URL url = new URL(urlstring);

    URLConnection connection = url.openConnection();
    connection.connect();

    try {/*from   w ww .  j a v  a  2s. c om*/
        BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
        try {
            for (; in.readLine() != null;)
                ;
        } finally {
            in.close();
        }
    } catch (IOException ioe) {
        LOG.warn("urlstring=" + urlstring, ioe);
    }
}

From source file:cc.vidr.datum.util.FreebaseUtils.java

/**
 * Return the list of JSON objects returned by the API for the given query.
 * /*from  ww  w.  j a v a2  s.  c o m*/
 * @param path  the API service path
 * @return      the list of JSON objects
 * @throws      IOException if there was an error communicating with the
 *              server
 * @throws      ParseException if the server returns malformed JSON
 */
@SuppressWarnings("unchecked")
public static List<JSONObject> getResultList(String path) throws IOException, ParseException {
    URLConnection connection = new URL(endpoint + path).openConnection();
    connection.connect();
    InputStream stream = connection.getInputStream();
    Reader reader = new InputStreamReader(stream);
    JSONObject o = (JSONObject) JSONValue.parse(reader);
    return (List<JSONObject>) o.get("result");
}

From source file:com.pentaho.ctools.utils.HttpUtils.java

/**
 * This method shall return the status of HTTP request.
 *
 * @param url//w w  w .j a  va  2s  .  c  o m
 * @return
 * @throws Exception
 */
public static int GetHttpStatus(String url) {
    LOG.debug("The URL: " + url);
    int nHttpStatus = HttpStatus.SC_BAD_REQUEST;

    try {
        URL oUrl = new URL(url);
        URLConnection uc = oUrl.openConnection();
        uc.connect();
        nHttpStatus = ((HttpURLConnection) uc).getResponseCode();
        LOG.debug("HTTP Status:" + nHttpStatus);
    } catch (Exception ex) {
        LOG.error(ex.getMessage());
    }

    return nHttpStatus;
}

From source file:mc.lib.network.NetworkHelper.java

public static Bitmap getBitmap(String url) {
    Bitmap res = null;//from   w  w w.j  a v a  2  s .  c  o m
    InputStream is = null;
    try {
        URLConnection c = new URL(url).openConnection();
        c.connect();
        is = c.getInputStream();
        res = BitmapFactory.decodeStream(is);
    } catch (MalformedURLException e) {
        Log.e(LOGTAG, "Wrong url format", e);
    } catch (Exception e) {
        Log.e(LOGTAG, "Cannot get bitmap", e);
    } finally {
        StreamHelper.close(is);
    }
    return res;
}

From source file:mc.lib.network.NetworkHelper.java

public static void saveToFile(String url, File file) {
    InputStream is = null;/*from  ww w .j  a va  2s.  c o m*/
    OutputStream os = null;
    try {
        URLConnection c = new URL(url).openConnection();
        c.connect();
        is = c.getInputStream();
        os = new FileOutputStream(file);
        StreamHelper.copyNetworkStream(is, os, c.getReadTimeout());
    } catch (MalformedURLException e) {
        Log.e(LOGTAG, "Wrong url format", e);
    } catch (Exception e) {
        Log.e(LOGTAG, "Can not open stream", e);
    } finally {
        StreamHelper.close(os);
        StreamHelper.close(is);
    }
}