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:Main.java

public static Document openUrl(String location) throws Exception {
    URL url = new URL(location);
    //System.out.println(url);

    URLConnection con = url.openConnection();
    InputStream responseStream = con.getInputStream();

    Document result = loadFromStream(responseStream);
    responseStream.close();/*from w  ww.  j  av  a 2 s.  c o  m*/
    return result;
}

From source file:com.ln.methods.Getcalendar.java

public static void Main() {
    //TODO store file locally and check if file changed == redownload
    try {// w w w.j  a va2s .  co m

        //Get source
        // System.setProperty("http.agent", "lnrev2");
        URL calendar = new URL(Calendarurl);
        HttpURLConnection getsource = (HttpURLConnection) calendar.openConnection();
        InputStream in = new BufferedInputStream(getsource.getInputStream());
        //Write source
        Writer sw = new StringWriter();
        char[] b = new char[1024];
        Reader reader = new BufferedReader(new InputStreamReader(in, "UTF-8"));
        int n;
        while ((n = reader.read(b)) != -1) {
            sw.write(b, 0, n);
        }
        //Source == String && Send source for parsing
        Parser.source = sw.toString();
        Betaparser.source = sw.toString();

        //String lol = sw.toString();
        //lol = StringUtils.substringBetween(lol, "<month year=\"2012\" num=\"2\">", "</month>");
        //Parser.parse();

        Betaparser.parse();

    } catch (MalformedURLException e) {
        e.printStackTrace();
        JOptionPane.showMessageDialog(null, e.getStackTrace(), "Error", JOptionPane.WARNING_MESSAGE);
    } catch (IOException e) {
        e.printStackTrace();
        JOptionPane.showMessageDialog(null, e.getStackTrace(), "Error", JOptionPane.WARNING_MESSAGE);
    }
}

From source file:Main.java

private static String getStringFromUrl(String url, int connectTimeout, int readTimeout)
        throws MalformedURLException, JSONException, IOException {
    URL urlObject = new URL(url);
    HttpURLConnection urlConn = (HttpURLConnection) urlObject.openConnection();
    String jsonString = "";

    if (connectTimeout != 0) {
        urlConn.setConnectTimeout(connectTimeout);
    }/*from  w  ww  .j  a va2s  . c  o  m*/
    if (readTimeout != 0) {
        urlConn.setReadTimeout(readTimeout);
    }

    try {
        jsonString = getStringFromInputStream(urlConn.getInputStream());
    } finally {
        urlConn.disconnect();
    }
    return jsonString;
}

From source file:Main.java

static public String download_json(String url_addr) {
    StringBuilder result = new StringBuilder();
    try {//  w w  w. j a  va  2 s .  c o  m
        URL url = new URL(url_addr);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        if (conn != null) {
            conn.setConnectTimeout(10000);
            conn.setUseCaches(false);
            if (conn.getResponseCode() == HttpURLConnection.HTTP_OK) {
                BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
                for (;;) {
                    String line = br.readLine();
                    if (line == null)
                        break;
                    result.append(line + '\n');
                }
                br.close();
            } else {
                conn.disconnect();
                return null;
            }
            conn.disconnect();
        }
    } catch (Exception e) {
        Log.e(TAG, e.toString());
        return null;
    }
    return result.toString();
}

From source file:Main.java

public static String getJsonCurrencyObject(String myurl) {
    StringBuilder strBuilder = new StringBuilder();

    try {//from  ww w  .  java  2 s. c o  m
        URL url = new URL(myurl);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();

        InputStream inputStream = new BufferedInputStream(connection.getInputStream());

        BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
        String line;
        while ((line = reader.readLine()) != null) {
            strBuilder.append(line);
        }
        inputStream.close();

    } catch (MalformedURLException ex) {
        Log.d("HttpURLConnection", "getJsonCurrencyObject: " + ex.getMessage());
    }

    catch (IOException e) {
        Log.d("readJSONFeed", e.getLocalizedMessage());
        e.printStackTrace();
    } catch (Exception ex) {
        Log.d("GeneralException", ex.getMessage());
    }

    return strBuilder.toString();
}

From source file:Main.java

public static boolean downloadUrlToStream(String urlString, OutputStream outputStream) {
    HttpURLConnection urlConnection = null;
    BufferedOutputStream out = null;
    BufferedInputStream in = null;
    try {/*from   ww  w  .  j  a v  a  2s  . c  o  m*/
        final URL url = new URL(urlString);
        urlConnection = (HttpURLConnection) url.openConnection();
        in = new BufferedInputStream(urlConnection.getInputStream(), 8 * 1024);
        out = new BufferedOutputStream(outputStream, 8 * 1024);
        int b;
        while ((b = in.read()) != -1) {
            out.write(b);
        }
        return true;
    } catch (final IOException e) {
        e.printStackTrace();
    } finally {
        if (urlConnection != null) {
            urlConnection.disconnect();
        }
        try {
            if (out != null) {
                out.close();
            }
            if (in != null) {
                in.close();
            }
        } catch (final IOException e) {
            e.printStackTrace();
        }
    }
    return false;
}

From source file:Main.java

/**
 * download and return bitmap for the given url
 * DO not call this method from main thread
 * @param src//  w  ww.j  a va  2s.  co  m
 * @return
 */
public static Bitmap getBitmapFromURL(String imageUrl) {
    try {
        URL url = new URL(imageUrl);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setDoInput(true);
        connection.connect();
        InputStream input = connection.getInputStream();
        Bitmap myBitmap = BitmapFactory.decodeStream(input);
        if (myBitmap != null) {
            myBitmap = getResizedBitmap(myBitmap, 200, 200);
        }
        return myBitmap;
    } catch (IOException e) {
        e.printStackTrace();
        return null;
    }
}

From source file:Main.java

/**
 * Make a network request form ONLINE_LOCATION.
 *///from   w  w  w  .j a v a  2 s.  c  o  m
public static boolean makeNetworkCall() {
    try {
        URL url = new URL(ONLINE_LOCATION);
        HttpsURLConnection httpsURLConnection = (HttpsURLConnection) url.openConnection();
        httpsURLConnection.getInputStream();
        Log.d(TAG, "Network call completed.");
        return true;
    } catch (IOException e) {
        Log.e(TAG, "IOException " + e.getMessage());
        return false;
    }
}

From source file:Main.java

static String downloadUrl(String myurl) throws IOException {
    InputStream is = null;//from  w  w  w . ja  va  2  s  .c  om

    try {
        URL url = new URL(myurl);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setRequestProperty("Authorization", "Basic cm9vdDpvcmllbnRkYg==");
        conn.setReadTimeout(10000);
        conn.setConnectTimeout(15000);
        conn.setRequestMethod("GET");
        conn.setDoInput(true);
        //start
        conn.connect();
        int response = conn.getResponseCode();
        Log.e("The response is: ", "" + response);
        is = conn.getInputStream();
        //converte inputStream in stringa
        String contentAsString = readIt(is);
        return contentAsString;
    } catch (IOException e) {
        Log.e("HTTP", e.getMessage());
        return null;
    } finally {
        if (is != null) {
            is.close();
        }
    }
}

From source file:Main.java

public static String loadImageFromUrl(Context context, String imageURL, File file) {
    try {//from w  ww.  j  a  v a 2  s.com
        URL url = new URL(imageURL);
        HttpURLConnection con = (HttpURLConnection) url.openConnection();
        con.setConnectTimeout(5 * 1000);
        con.setDoInput(true);
        con.connect();
        if (con.getResponseCode() == 200) {
            InputStream inputStream = con.getInputStream();

            ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
            byte[] buffer = new byte[1024 * 20];
            int length = -1;
            while ((length = inputStream.read(buffer)) != -1) {
                byteArrayOutputStream.write(buffer, 0, length);
            }
            byteArrayOutputStream.close();
            inputStream.close();

            FileOutputStream outputStream = new FileOutputStream(file);
            outputStream.write(byteArrayOutputStream.toByteArray());
            outputStream.close();
            return file.getPath();
        }
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return "";
}