Example usage for java.net HttpURLConnection getContentLength

Introduction

In this page you can find the example usage for java.net HttpURLConnection getContentLength.

Prototype

public int getContentLength() 

Source Link

Document

Returns the value of the content-length header field.

Usage

From source file:Main.java

/**
 * @param url/*from w  w  w. j av  a2 s .c  o  m*/
 * @return
 */
public static Bitmap getBitMapFromURL(URL url) {
    Bitmap mBitmap = null;

    try {
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setDoInput(true);
        conn.connect();
        conn.getContentLength();
        InputStream is = conn.getInputStream();
        BufferedInputStream bis = new BufferedInputStream(is);
        mBitmap = BitmapFactory.decodeStream(bis);
        bis.close();
        is.close();
    } catch (Exception e) {
        Log.e("Exception in MapScrollActivity.getBitmapFromURL", "" + e.getMessage());
        e.printStackTrace();
    }
    return mBitmap;
}

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From source file:net.daporkchop.porkbot.util.HTTPUtils.java

/**
 * Performs a GET request to the specified URL and returns the result.
 * <p/>//from  w w  w.  ja  v  a 2  s .  c  o m
 * The response will be parsed as UTF-8.
 * If the server returns an error but still provides a body, the body will be returned as normal.
 * If the server returns an error without any body, a relevant {@link java.io.IOException} will be thrown.
 *
 * @param url URL to submit the GET request to
 * @return Raw text response from the server
 * @throws IOException The request was not successful
 */
public static String performGetRequest(@NonNull URL url, int max) throws IOException {
    final HttpURLConnection connection = createUrlConnection(url);
    if (connection.getContentLength() > max) {
        throw new IOException("Content too big!");
    }
    return sendRequest(connection);
}

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From source file:Main.java

public static byte[] getBytes(String url) {
    try {//from w w w. java  2  s .  c o m
        URL u = new URL(url);
        HttpURLConnection connection = (HttpURLConnection) u.openConnection();
        connection.setRequestMethod("GET");
        connection.setRequestProperty("Charset", "UTF-8");
        InputStream is = connection.getInputStream();
        int contentLength = connection.getContentLength();
        byte[] data = new byte[contentLength];
        int alreadyRead = 0;
        int len = 0;
        while (alreadyRead < contentLength) {
            len = is.read(data, alreadyRead, contentLength - alreadyRead);
            alreadyRead += len;
        }
        is.close();
        return data;
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }

}

---

From source file:Main.java

public static boolean downloadFile(File file, URL url) throws IOException {
    BufferedInputStream bis = null;
    BufferedOutputStream bos = null;
    HttpURLConnection conn = null;
    try {//  www. ja v  a 2  s.  com
        conn = (HttpURLConnection) url.openConnection();
        bis = new BufferedInputStream(conn.getInputStream());
        bos = new BufferedOutputStream(new FileOutputStream(file));

        int contentLength = conn.getContentLength();

        byte[] buffer = new byte[BUFFER_SIZE];
        int read = 0;
        int count = 0;
        while ((read = bis.read(buffer)) != -1) {
            bos.write(buffer, 0, read);
            count += read;
        }
        if (count < contentLength)
            return false;
        int responseCode = conn.getResponseCode();
        if (responseCode / 100 != 2) {
            // error
            return false;
        }
        // finished
        return true;
    } finally {
        try {
            bis.close();
            bos.close();
            conn.disconnect();
        } catch (Exception e) {
        }
    }
}

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From source file:Main.java

public static byte[] retrieveImageData_fromUrl(String imageUrl) throws IOException {
    URL url = new URL(imageUrl);
    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
    connection.setRequestProperty("User-Agent",
            System.getProperties().getProperty("http.agent") + " FacebookAndroidSDK");

    // determine the image size and allocate a buffer
    int fileSize = connection.getContentLength();
    byte[] imageData = new byte[fileSize];

    // download the file
    Log.d(TAG, "fetching image " + imageUrl + " (" + fileSize + ")");

    if (fileSize > 0) {

        BufferedInputStream istream = new BufferedInputStream(connection.getInputStream());
        int bytesRead = 0;
        int offset = 0;
        while (bytesRead != -1 && offset < fileSize) {
            bytesRead = istream.read(imageData, offset, fileSize - offset);
            offset += bytesRead;//from w  ww. j a v  a2s .  com
        }

        istream.close();
    } else
        Log.d(TAG, "fileSize is 0! skipping");

    // clean up
    connection.disconnect();

    return imageData;
}

---

From source file:com.qhn.bhne.xhmusic.utils.MyUtils.java

public static BufferedInputStream getInputStream(String musicPicRes) {
    URL iconUrl = null;/*  ww  w.  j a  va 2  s .  c o  m*/
    try {
        iconUrl = new URL(musicPicRes);
        URLConnection conn = iconUrl.openConnection();
        HttpURLConnection http = (HttpURLConnection) conn;

        int length = http.getContentLength();

        conn.connect();
        // ??
        BufferedInputStream bis = new BufferedInputStream(conn.getInputStream(), length);
        return bis;
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

---

From source file:com.teleca.jamendo.util.download.DownloadTask.java

public static Boolean downloadFile(DownloadJob job) throws IOException {

    // TODO rewrite to apache client

    PlaylistEntry mPlaylistEntry = job.getPlaylistEntry();
    String mDestination = job.getDestination();

    URL u = new URL(mPlaylistEntry.getTrack().getStream());
    HttpURLConnection c = (HttpURLConnection) u.openConnection();
    c.setRequestMethod("GET");
    c.setDoOutput(true);//from  w ww.  j  ava2  s  .c  o m
    c.connect();
    job.setTotalSize(c.getContentLength());

    Log.i(JamendoApplication.TAG, "creating file");

    String path = DownloadHelper.getAbsolutePath(mPlaylistEntry, mDestination);
    String fileName = DownloadHelper.getFileName(mPlaylistEntry, job.getFormat());

    try {
        // Create multiple directory
        boolean success = (new File(path)).mkdirs();
        if (success) {
            Log.i(JamendoApplication.TAG, "Directory: " + path + " created");
        }

    } catch (Exception e) {//Catch exception if any
        Log.e(JamendoApplication.TAG, "Error creating folder", e);
        return false;
    }

    FileOutputStream f = new FileOutputStream(new File(path, fileName));

    InputStream in = c.getInputStream();

    if (in == null) {
        // When InputStream is a NULL
        return false;
    }

    byte[] buffer = new byte[1024];
    int lenght = 0;
    while ((lenght = in.read(buffer)) > 0) {
        f.write(buffer, 0, lenght);
        job.setDownloadedSize(job.getDownloadedSize() + lenght);
    }

    f.close();

    downloadCover(job);
    return true;

}

---

From source file:com.zack6849.alphabot.api.Utils.java

public static String getTitle(String link) {
    String response = "";
    try {//from w w w  . j a va  2  s  . c  o m
        HttpURLConnection conn = (HttpURLConnection) new URL(link).openConnection();
        conn.addRequestProperty("User-Agent", USER_AGENT);
        String type = conn.getContentType();
        int length = conn.getContentLength() / 1024;
        response = String.format("HTTP %s: %s", conn.getResponseCode(), conn.getResponseMessage());
        String info;
        if (type.contains("text") || type.contains("application")) {
            Document doc = Jsoup.connect(link).userAgent(USER_AGENT).followRedirects(true).get();
            String title = doc.title() == null || doc.title().isEmpty() ? "No title found!" : doc.title();
            info = String.format("%s - (Content Type: %s Size: %skb)", title, type, length);
            return info;
        }
        info = String.format("Content Type: %s Size: %skb", type, length);
        return info;

    } catch (IOException ex) {
        if (ex.getMessage().contains("UnknownHostException")) {
            return Colors.RED + "Unknown hostname!";
        }
        return response.isEmpty() ? Colors.RED + "An error occured" : response;
    }
}

---

From source file:org.kontalk.upload.KontalkBoxUploadConnection.java

public static String responseToString(HttpURLConnection conn, final Charset charset) throws IOException {
    final InputStream instream = conn.getInputStream();
    if (instream == null) {
        return null;
    }/*w  w  w .  j av a2  s  .  co  m*/
    try {
        int i = conn.getContentLength();
        if (i < 0) {
            i = 4096;
        }
        final Reader reader = new InputStreamReader(instream, charset);
        final StringBuilder buffer = new StringBuilder(i);
        final char[] tmp = new char[1024];
        int l;
        while ((l = reader.read(tmp)) != -1) {
            buffer.append(tmp, 0, l);
        }
        return buffer.toString();
    } finally {
        instream.close();
    }
}

---

From source file:Main.java

public static boolean hasActiveInternetConnection(Context context) {
    if (isNetworkAvailable(context)) {
        try {/*w ww  .  j a va  2 s . c  om*/
            HttpURLConnection connection = (HttpURLConnection) (new URL(
                    "http://clients3.google.com/generate_204")).openConnection();
            connection.setRequestProperty("User-Agent", "Test");
            connection.setRequestProperty("Connection", "close");
            connection.setReadTimeout(1500);
            connection.connect();
            return (connection.getResponseCode() == 204 && connection.getContentLength() == 0);
        } catch (IOException e) {
            Log.e("ERROR", "Error checking internet connection");
        }
    } else
        Log.e("ERROR", "No network available");
    return false;
}

---

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