Example usage for java.io ByteArrayOutputStream write

Introduction

In this page you can find the example usage for java.io ByteArrayOutputStream write.

Prototype

public synchronized void write(byte b[], int off, int len) 

Source Link

Document

Writes len bytes from the specified byte array starting at offset off to this ByteArrayOutputStream .

Usage

From source file:com.log4ic.compressor.utils.FileUtils.java

/**
 * InputStream?????String// w ww . ja  v  a 2s. com
 *
 * @param in
 * @param encoding
 * @return
 * @throws Exception
 */
public static String InputStream2String(InputStream in, String encoding) throws Exception {
    ByteArrayOutputStream outStream = new ByteArrayOutputStream();
    byte[] data = new byte[1024];
    int count = -1;
    while ((count = in.read(data, 0, 1024)) != -1)
        outStream.write(data, 0, count);

    data = null;
    return new String(outStream.toByteArray(), encoding);
}

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From source file:Main.java

/**
 * decompress a gzip byte array, using a default buffer length of 1024
 * <p>/*ww w. j  ava 2 s .  co  m*/
 * @param compressedByteArray gzip-compressed byte array
 * @param bufferlength size of the buffer in bytes
 * @return decompressed byte array
 * @throws IOException thrown if there was a failure to construct the GzipInputStream
 */
public static byte[] decompressGzipByteArray(byte[] compressedByteArray, int bufferlength) throws IOException {
    ByteArrayOutputStream uncompressedStream = new ByteArrayOutputStream();

    GZIPInputStream compressedStream = new GZIPInputStream(new ByteArrayInputStream(compressedByteArray));

    byte[] buffer = new byte[bufferlength];

    int index = -1;

    while ((index = compressedStream.read(buffer)) != -1) {
        uncompressedStream.write(buffer, 0, index);
    }

    return uncompressedStream.toByteArray();
}

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From source file:org.dataone.proto.trove.mn.http.client.DataHttpClientHandler.java

public static synchronized String executePost(HttpClient httpclient, HttpPost httpPost)
        throws ServiceFailure, NotFound, InvalidToken, NotAuthorized, IdentifierNotUnique, UnsupportedType,
        InsufficientResources, InvalidSystemMetadata, NotImplemented, InvalidCredentials, InvalidRequest,
        AuthenticationTimeout, UnsupportedMetadataType, HttpException {
    String response = null;/*from  ww w.  ja v  a 2 s .  c o m*/

    try {
        HttpResponse httpResponse = httpclient.execute(httpPost);
        if (httpResponse.getStatusLine().getStatusCode() == HttpURLConnection.HTTP_OK) {
            HttpEntity resEntity = httpResponse.getEntity();
            if (resEntity != null) {
                logger.debug("Response content length: " + resEntity.getContentLength());
                logger.debug("Chunked?: " + resEntity.isChunked());
                BufferedInputStream in = new BufferedInputStream(resEntity.getContent());
                ByteArrayOutputStream resOutputStream = new ByteArrayOutputStream();
                byte[] buff = new byte[32 * 1024];
                int len;
                while ((len = in.read(buff)) > 0) {
                    resOutputStream.write(buff, 0, len);
                }
                response = new String(resOutputStream.toByteArray());
                logger.debug(response);
                resOutputStream.close();
                in.close();
            }
        } else {
            HttpExceptionHandler.deserializeAndThrowException(httpResponse);
        }
    } catch (IOException ex) {
        throw new ServiceFailure("1002", ex.getMessage());
    }
    return response;
}

---

From source file:Main.java

/**
 * Read a text file into a String, optionally limiting the length.
 * //from  www  . j a  v a 2  s.c  om
 * @param file
 *            to read (will not seek, so things like /proc files are OK)
 * @param max
 *            length (positive for head, negative of tail, 0 for no limit)
 * @param ellipsis
 *            to add of the file was truncated (can be null)
 * @return the contents of the file, possibly truncated
 * @throws IOException
 *             if something goes wrong reading the file
 */
public static String readTextFile(File file, int max, String ellipsis) throws IOException {
    InputStream input = new FileInputStream(file);
    try {
        long size = file.length();
        if (max > 0 || (size > 0 && max == 0)) { // "head" mode: read the
                                                 // first N bytes
            if (size > 0 && (max == 0 || size < max))
                max = (int) size;
            byte[] data = new byte[max + 1];
            int length = input.read(data);
            if (length <= 0)
                return "";
            if (length <= max)
                return new String(data, 0, length);
            if (ellipsis == null)
                return new String(data, 0, max);
            return new String(data, 0, max) + ellipsis;
        } else if (max < 0) { // "tail" mode: keep the last N
            int len;
            boolean rolled = false;
            byte[] last = null, data = null;
            do {
                if (last != null)
                    rolled = true;
                byte[] tmp = last;
                last = data;
                data = tmp;
                if (data == null)
                    data = new byte[-max];
                len = input.read(data);
            } while (len == data.length);

            if (last == null && len <= 0)
                return "";
            if (last == null)
                return new String(data, 0, len);
            if (len > 0) {
                rolled = true;
                System.arraycopy(last, len, last, 0, last.length - len);
                System.arraycopy(data, 0, last, last.length - len, len);
            }
            if (ellipsis == null || !rolled)
                return new String(last);
            return ellipsis + new String(last);
        } else { // "cat" mode: size unknown, read it all in streaming
                 // fashion
            ByteArrayOutputStream contents = new ByteArrayOutputStream();
            int len;
            byte[] data = new byte[1024];
            do {
                len = input.read(data);
                if (len > 0)
                    contents.write(data, 0, len);
            } while (len == data.length);
            return contents.toString();
        }
    } finally {
        input.close();
    }
}

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From source file:SwingResourceManager.java

/**
 * Returns an image encoded by the specified input stream
 * @param is InputStream The input stream encoding the image data
 * @return Image The image encoded by the specified input stream
 *///from  www. j a  v a  2 s  . c o  m
private static Image getImage(InputStream is) {
    try {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        byte buf[] = new byte[1024 * 4];
        while (true) {
            int n = is.read(buf);
            if (n == -1)
                break;
            baos.write(buf, 0, n);
        }
        baos.close();
        return Toolkit.getDefaultToolkit().createImage(baos.toByteArray());
    } catch (Throwable e) {
        return null;
    }
}

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From source file:com.thinkbiganalytics.feedmgr.util.ImportUtil.java

public static byte[] streamToByteArray(InputStream inputStream) throws IOException {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    byte[] buf = new byte[1024];
    int n;//from  w ww .j  av  a 2s .co m
    while ((n = inputStream.read(buf)) >= 0) {
        baos.write(buf, 0, n);
    }
    byte[] content = baos.toByteArray();
    return content;
}

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From source file:com.asual.lesscss.ResourcePackage.java

private static byte[] inflate(byte[] output) throws DataFormatException, IOException {
    Inflater inflater = new Inflater();
    inflater.setInput(output);/*from   ww  w. ja va  2s.c o m*/
    ByteArrayOutputStream baos = new ByteArrayOutputStream(output.length);
    byte[] buf = new byte[1024];
    while (!inflater.finished()) {
        int count = inflater.inflate(buf);
        baos.write(buf, 0, count);
    }
    baos.close();
    return baos.toByteArray();
}

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From source file:Main.java

public static byte[] inputStream2ByteArray(InputStream is, int bufferSize) throws IOException {
    if (null == is) {
        return null;
    }//from w ww .ja v a 2  s.  c o  m
    if (bufferSize < 1) {
        bufferSize = 1;
    }
    ByteArrayOutputStream byteBuffer = new ByteArrayOutputStream();

    // this is storage overwritten on each iteration with bytes
    byte[] buffer = new byte[bufferSize];

    // we need to know how may bytes were read to write them to the
    // byteBuffer
    int len = 0;
    while ((len = is.read(buffer)) != -1) {
        byteBuffer.write(buffer, 0, len);
    }

    byteBuffer.close();
    is.close();

    // and then we can return your byte array.
    return byteBuffer.toByteArray();
}

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From source file:Main.java

/**
 * Decompresses the given byte[] and returns the Object.
 * // www  .  j a v a 2  s . c o m
 * @param <T> Type of expected Object
 * @param bytes compressed byte[]
 * @param bufferSize size of buffer to be used (in bytes)
 * 
 * @return decompressed Object
 * 
 * @throws IOException if failed to decompress
 * @throws ClassCastException if cannot cast to specified type
 */
@SuppressWarnings("unchecked")
/* Ignore Unchecked Cast Warning */
public static <T> T decompress(byte[] bytes, int bufferSize) throws IOException, ClassCastException {

    try {
        ByteArrayOutputStream bos = new ByteArrayOutputStream(bufferSize);
        Inflater inflater = new Inflater();
        inflater.setInput(bytes);

        // Decompress
        byte[] buf = new byte[bufferSize];
        while (!inflater.finished()) {
            int count = inflater.inflate(buf);
            bos.write(buf, 0, count);
        }
        ObjectInputStream ois = new ObjectInputStream(new ByteArrayInputStream(bos.toByteArray()));

        return (T) ois.readObject();
    } catch (Exception e) {
        throw new IOException(e);
    }
}

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From source file:com.asual.lesscss.ResourcePackage.java

private static byte[] deflate(byte[] input) throws IOException {
    Deflater deflater = new Deflater();
    deflater.setLevel(Deflater.BEST_COMPRESSION);
    deflater.setInput(input);//from w w w.j  a  v a2  s.c  o m
    deflater.finish();
    ByteArrayOutputStream baos = new ByteArrayOutputStream(input.length);
    byte[] buf = new byte[1024];
    while (!deflater.finished()) {
        int count = deflater.deflate(buf);
        baos.write(buf, 0, count);
    }
    baos.close();
    return baos.toByteArray();
}

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