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.xenmaster.site.XenMasterSite.java

public static InputStream getFileAsStream(String file) throws IOException {
    URL url = new URL(XENMASTER_ORG_DOWNLOAD + "/" + file);
    URLConnection uc = url.openConnection();
    uc.connect();

    InputStream is = uc.getInputStream();
    return is;//from  ww  w.  j  ava2 s  .  c  o m
}

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From source file:Main.java

public static String getURLContent(String urlStr) throws Exception {
    URL url = new URL(urlStr);
    URLConnection connection = url.openConnection();
    connection.setDoOutput(true);//ww w  .j  a  v  a  2s .  c o  m
    connection.connect();
    OutputStream ous = connection.getOutputStream();
    BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(ous));
    bw.write("index.htm");
    bw.flush();
    bw.close();

    printRequestHeaders(connection);
    InputStream ins = connection.getInputStream();

    BufferedReader br = new BufferedReader(new InputStreamReader(ins));
    StringBuffer sb = new StringBuffer();
    String msg = null;
    while ((msg = br.readLine()) != null) {
        sb.append(msg);
        sb.append("\n"); // Append a new line
    }
    br.close();
    return sb.toString();
}

---

From source file:Main.java

static private BitmapDrawable bitmapDrawableFromURL(Resources resources, String str_url, boolean scale, int w,
        int h) {/*from   ww  w .j av a 2  s.c  om*/
    if (str_url == null || str_url.length() <= 0)
        return null;

    BitmapDrawable thumb = null;
    try {
        URL url = new URL(str_url);
        URLConnection connection = url.openConnection();
        connection.connect();

        InputStream stream = connection.getInputStream();
        BufferedInputStream data = new BufferedInputStream(stream);

        Bitmap bitmap = BitmapFactory.decodeStream(data);
        if (bitmap != null) {
            if (scale)
                thumb = new BitmapDrawable(resources, Bitmap.createScaledBitmap(bitmap, w, h, true));
            else
                thumb = new BitmapDrawable(resources, bitmap);
        }

    } catch (MalformedURLException e) {
        //e.printStackTrace();
    } catch (IOException e) {
        //e.printStackTrace();
    }

    return thumb;
}

---

From source file:Main.java

public static Bitmap getBitmapAndScale(String url, int requiredSize) {
    Bitmap bm = null;//ww  w  .java2  s  .  c o  m
    try {
        URL aURL = new URL(url);
        URLConnection conn = aURL.openConnection();
        conn.connect();
        InputStream is = conn.getInputStream();

        // Decode image size
        BitmapFactory.Options o = new BitmapFactory.Options();
        o.inJustDecodeBounds = true;
        BitmapFactory.decodeStream(is, null, o);
        // The new size we want to scale to

        // Find the correct scale value. It should be the power of 2.
        int width_tmp = o.outWidth, height_tmp = o.outHeight;
        int scale = 1;
        while (true) {
            if (width_tmp / 2 < requiredSize || height_tmp / 2 < requiredSize)
                break;
            width_tmp /= 2;
            height_tmp /= 2;
            scale *= 2;
        }
        // Decode with inSampleSize
        BitmapFactory.Options o2 = new BitmapFactory.Options();
        o2.inSampleSize = scale;
        bm = BitmapFactory.decodeStream(is, null, o2);
        return bm;

    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        return bm;

    }
}

---

From source file:Main.java

public static File downloadFile(String urlstr, File saveFile) {
    try {//from w  w w. j  a  va 2 s  .  com
        URL url = new URL(urlstr);// cause speed low.
        URLConnection con = url.openConnection();
        con.setDoInput(true);
        con.connect();
        InputStream ins = con.getInputStream();
        final int bufsize = 102400;

        byte[] buffer = new byte[bufsize];
        int len = -1;
        FileOutputStream bos = new FileOutputStream(saveFile);
        while ((len = ins.read(buffer)) != -1) {
            bos.write(buffer, 0, len);

        }
        ins.close();
        bos.close();
        return saveFile;
    } catch (Error e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return null;
}

---

From source file:InsertClobToMySqlServlet.java

public static String getClobsContentAsString(String urlAsString) throws Exception {
    InputStream content = null;//w ww  .  ja va2 s . co  m
    try {
        URL url = new URL(urlAsString);
        URLConnection urlConn = url.openConnection();
        urlConn.connect();
        content = urlConn.getInputStream();

        int BUFFER_SIZE = 1024;
        ByteArrayOutputStream output = new ByteArrayOutputStream();
        int length;
        byte[] buffer = new byte[BUFFER_SIZE];

        while ((length = content.read(buffer)) != -1) {
            output.write(buffer, 0, length);
        }
        return new String(output.toByteArray());
    } finally {
        content.close();
    }
}

---

From source file:UpdateMySqlClobServlet.java

public static String getClobsContentAsString(String urlAsString) throws Exception {
    InputStream content = null;//from   w w w  . j  a  v a 2  s  .  c  o m
    try {
        java.net.URL url = new java.net.URL(urlAsString);
        java.net.URLConnection urlConn = url.openConnection();
        urlConn.connect();
        content = urlConn.getInputStream();

        int BUFFER_SIZE = 1024;
        ByteArrayOutputStream output = new ByteArrayOutputStream();
        int length;
        byte[] buffer = new byte[BUFFER_SIZE];

        while ((length = content.read(buffer)) != -1) {
            output.write(buffer, 0, length);
        }
        return new String(output.toByteArray());

    } finally {
        content.close();
    }
}

---

From source file:gdv.xport.util.URLReader.java

private static String read(final URLConnection connection) throws IOException {
    connection.connect();
    InputStream istream = connection.getInputStream();
    BufferedReader in = new BufferedReader(new InputStreamReader(istream));
    try {/*from  w w w.j  a  v  a 2 s  .  c  om*/
        StringBuilder sbuf = new StringBuilder();
        while (in.ready()) {
            String line = in.readLine();
            LOG.debug(line);
            sbuf.append(line);
            sbuf.append("\n");
        }
        return sbuf.toString().trim();
    } finally {
        in.close();
        istream.close();
    }
}

---

From source file:org.enderstone.server.uuid.ServerRequest.java

public static JSONObject parseDataFromURL(String connect) throws IOException {
    URL url = new URL(connect);
    URLConnection uc = url.openConnection();
    uc.setConnectTimeout(5000);//from   w ww . j ava2 s.c om
    uc.setReadTimeout(5000);
    uc.connect();
    String encoding = uc.getContentEncoding();
    encoding = encoding == null ? "UTF-8" : encoding;
    try (Scanner scanner = new Scanner(uc.getInputStream(), encoding)) {
        scanner.useDelimiter("\\A");
        return new JSONObject(scanner.next());
    } catch (NoSuchElementException noskin) {
        return new JSONObject();
    }
}

---

From source file:Main.java

public static Bitmap tryToGetBitmapFromInternet(String bitmapUrl, Context context, int imageSize) {
    if (null != bitmapUrl) {
        InputStream inputStream = null;
        try {/* ww  w  . ja  va2  s.co  m*/
            URL url = new URL(bitmapUrl);

            URLConnection connection = url.openConnection();

            connection.connect();

            inputStream = connection.getInputStream();
            ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
            byte[] buffer = new byte[1024];
            int read;

            while ((read = inputStream.read(buffer)) != -1) {
                byteArrayOutputStream.write(buffer, 0, read);
            }
            inputStream.close();
            byteArrayOutputStream.close();

            buffer = byteArrayOutputStream.toByteArray();

            BitmapFactory.Options options = new BitmapFactory.Options();
            options.inJustDecodeBounds = true;

            BitmapFactory.decodeByteArray(buffer, 0, buffer.length, options);

            int maxSize = Math.max(options.outWidth, options.outHeight);
            float newImageScale = 1f;
            if (-1 != imageSize) {
                newImageScale = maxSize / (imageSize * context.getResources().getDisplayMetrics().density);
            }

            options.inJustDecodeBounds = false;
            options.inSampleSize = Math.round(newImageScale);

            return BitmapFactory.decodeByteArray(buffer, 0, buffer.length, options);
        } catch (Throwable e) {
            // pass
        } finally {
            if (null != inputStream) {
                try {
                    inputStream.close();
                } catch (IOException e) {
                    // pass
                }
                inputStream = null;
            }
            System.gc();
        }
    }

    return null;
}

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