Example usage for java.io DataOutputStream write

Introduction

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

Prototype

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

Source Link

Document

Writes len bytes from the specified byte array starting at offset off to the underlying output stream.

Usage

From source file:com.cloudera.seismic.segy.SegyUnloader.java

private void write(Path path, DataOutputStream out, Configuration conf) throws Exception {
    System.out.println("Reading: " + path);
    SequenceFile.Reader reader = new SequenceFile.Reader(FileSystem.get(conf), path, conf);
    BytesWritable value = new BytesWritable();
    while (reader.next(NullWritable.get(), value)) {
        out.write(value.getBytes(), 0, value.getLength());
    }//from ww  w.  ja  v a  2 s  .c  o m
    reader.close();
}

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From source file:org.apache.hadoop.tools.mapred.filechunk.TestCopyChunkMapper.java

private static void touchFile(String path, long totalFileSize, boolean preserveBlockSize,
        ChecksumOpt checksumOpt) throws Exception {
    FileSystem fs;//from w ww .j  a v a2 s . c o  m
    DataOutputStream outputStream = null;
    try {
        fs = cluster.getFileSystem();
        final Path qualifiedPath = new Path(path).makeQualified(fs.getUri(), fs.getWorkingDirectory());
        final long blockSize = preserveBlockSize ? NON_DEFAULT_BLOCK_SIZE
                : fs.getDefaultBlockSize(qualifiedPath) * 2;
        FsPermission permission = FsPermission.getFileDefault().applyUMask(FsPermission.getUMask(fs.getConf()));
        outputStream = fs.create(qualifiedPath, permission, EnumSet.of(CreateFlag.CREATE, CreateFlag.OVERWRITE),
                0, (short) (fs.getDefaultReplication(qualifiedPath) * 2), blockSize, null, checksumOpt);
        byte[] bytes = new byte[DEFAULT_FILE_SIZE];
        long curFileSize = 0;
        int bufferLen = DEFAULT_FILE_SIZE;
        while (curFileSize < totalFileSize) {
            if (totalFileSize - curFileSize < DEFAULT_FILE_SIZE)
                bufferLen = (int) (totalFileSize - curFileSize);
            outputStream.write(bytes, 0, bufferLen);
            outputStream.flush();
            curFileSize += bufferLen;
        }
        pathList.add(qualifiedPath);
        ++nFiles;

        FileStatus fileStatus = fs.getFileStatus(qualifiedPath);
        System.out.println(fileStatus.getBlockSize());
        System.out.println(fileStatus.getReplication());
    } finally {
        IOUtils.cleanup(null, outputStream);
    }
}

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From source file:org.apache.hadoop.io.crypto.tool.CryptoApiTool.java

private void writeStream(CompressionInputStream input, DataOutputStream output) throws IOException {
    int read = 0;
    byte[] buffer = new byte[64 * 1024];
    // while (0 < (read = input.read(buffer, 0, 64 * 1024))) {
    while (0 < (read = input.read(buffer, 0, 12 * 1024))) {
        output.write(buffer, 0, read);
    }//from ww  w.j av  a 2 s.c om
    output.flush();

}

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From source file:gov.nasa.arc.geocam.geocam.HttpPost.java

protected static void assembleMultipart(DataOutputStream out, Map<String, String> vars, String fileKey,
        String fileName, InputStream istream) throws IOException {

    for (String key : vars.keySet()) {
        out.writeBytes("--" + BOUNDARY + CRLF);
        out.writeBytes("Content-Disposition: form-data; name=\"" + key + "\"" + CRLF);
        out.writeBytes(CRLF);/*from ww  w . j a va  2 s  .c  o  m*/
        out.writeBytes(vars.get(key) + CRLF);
    }

    out.writeBytes("--" + BOUNDARY + CRLF);
    out.writeBytes(
            "Content-Disposition: form-data; name=\"" + fileKey + "\"; filename=\"" + fileName + "\"" + CRLF);
    out.writeBytes("Content-Type: application/octet-stream" + CRLF);
    out.writeBytes(CRLF);

    // write stream
    //http://getablogger.blogspot.com/2008/01/android-how-to-post-file-to-php-server.html
    int maxBufferSize = 1024;
    int bytesAvailable = istream.available();
    int bufferSize = Math.min(maxBufferSize, bytesAvailable);
    byte[] buffer = new byte[bufferSize];

    int bytesRead = istream.read(buffer, 0, bufferSize);
    while (bytesRead > 0) {
        out.write(buffer, 0, bufferSize);
        out.flush();
        bytesAvailable = istream.available();
        bufferSize = Math.min(maxBufferSize, bytesAvailable);
        bytesRead = istream.read(buffer, 0, bufferSize);
    }

    out.writeBytes(CRLF);
    out.writeBytes("--" + BOUNDARY + "--" + CRLF);
    out.writeBytes(CRLF);
}

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From source file:org.apache.hadoop.hdfs.protocol.datatransfer.PacketReceiver.java

/**
 * Rewrite the last-read packet on the wire to the given output stream.
 *//*from  w  w w . j  a va2  s. co m*/
public void mirrorPacketTo(DataOutputStream mirrorOut) throws IOException {
    Preconditions.checkState(!useDirectBuffers, "Currently only supported for non-direct buffers");
    mirrorOut.write(curPacketBuf.array(), curPacketBuf.arrayOffset(), curPacketBuf.remaining());
}

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From source file:org.b5chat.crossfire.web.FaviconServlet.java

private byte[] getImage(String url) {
    try {//w w w . ja  v a2 s  .c o m
        // Try to get the fiveicon from the url using an HTTP connection from the pool
        // that also allows to configure timeout values (e.g. connect and get data)
        GetMethod get = new GetMethod(url);
        get.setFollowRedirects(true);
        int response = client.executeMethod(get);
        if (response < 400) {
            // Check that the response was successful. Should we also filter 30* code?
            return get.getResponseBody();
        } else {
            // Remote server returned an error so return null
            return null;
        }
    } catch (IllegalStateException e) {
        // Something failed (probably a method not supported) so try the old stye now
        try {
            URLConnection urlConnection = new URL(url).openConnection();
            urlConnection.setReadTimeout(1000);

            urlConnection.connect();
            DataInputStream di = new DataInputStream(urlConnection.getInputStream());

            ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
            DataOutputStream out = new DataOutputStream(byteStream);

            int len;
            byte[] b = new byte[1024];
            while ((len = di.read(b)) != -1) {
                out.write(b, 0, len);
            }
            di.close();
            out.flush();

            return byteStream.toByteArray();
        } catch (IOException ioe) {
            // We failed again so return null
            return null;
        }
    } catch (IOException ioe) {
        // We failed so return null
        return null;
    }
}

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From source file:com.tonchidot.nfc_contact_exchanger.lib.PictureUploader.java

private String doFileUploadJson(String url, String fileParamName, byte[] data) {
    try {/* w ww  .j  ava  2 s .  co m*/
        String boundary = "BOUNDARY" + new Date().getTime() + "BOUNDARY";
        String lineEnd = "\r\n";
        String twoHyphens = "--";

        URL connUrl = new URL(url);
        HttpURLConnection conn = (HttpURLConnection) connUrl.openConnection();
        conn.setDoInput(true);
        conn.setDoOutput(true);
        conn.setUseCaches(false);
        conn.setRequestMethod("POST");
        conn.setRequestProperty("Connection", "Keep-Alive");
        conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
        DataOutputStream dos = new DataOutputStream(conn.getOutputStream());
        dos.writeBytes(twoHyphens + boundary + lineEnd);
        dos.writeBytes("Content-Disposition: form-data; name=\"" + fileParamName + "\";filename=\"photo.jpg\""
                + lineEnd);
        dos.writeBytes(lineEnd);
        dos.write(data, 0, data.length);
        dos.writeBytes(lineEnd);
        dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
        dos.flush();
        dos.close();

        BufferedReader rd = new BufferedReader(new InputStreamReader(conn.getInputStream()));
        StringBuilder result = new StringBuilder();
        String line;
        while ((line = rd.readLine()) != null) {
            result.append(line);
        }
        rd.close();
        return result.toString();
    } catch (IOException e) {
        if (Config.LOGD) {
            Log.d(TAG, "IOException : " + e);
        }
    }
    return null;
}

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From source file:fi.elfcloud.sci.Connection.java

/**
 * Does a store operation to elfcloud.fi server.
 * @param headers request headers to be applied
 * @param dataChunk data to be sent/*  ww  w. j  ava2 s. c o  m*/
 * @param len length of the data
 * @throws ECException
 */
public void sendData(Map<String, String> headers, byte[] dataChunk, int len) throws ECException {
    Object[] keys = headers.keySet().toArray();
    URL url;

    try {
        url = new URL(Connection.url + Connection.apiVersion + "/store");
        conn = (HttpURLConnection) url.openConnection();
        for (int i = 0; i < keys.length; i++) {
            conn.setRequestProperty((String) keys[i], headers.get(keys[i]));
        }
        conn.setDoOutput(true);
        DataOutputStream wr = new DataOutputStream(conn.getOutputStream());
        wr.write(dataChunk, 0, len);
        String result = conn.getHeaderField("X-ELFCLOUD-RESULT");
        wr.close();
        if (conn.getResponseCode() != 200 || !result.equals("OK")) {
            ECDataItemException exception;
            if (conn.getResponseCode() == 200) {
                String[] exceptionData = result.split(" ", 4);
                int exceptionID = Integer.parseInt(exceptionData[1]);
                String message = exceptionData[3];
                if (exceptionID == 101) {
                    cookieJar.removeAll();
                    while (authTries < 3) {
                        if (auth()) {
                            sendData(headers, dataChunk, len);
                            return;
                        }
                    }
                    authTries = 0;
                }
                exception = new ECDataItemException();
                exception.setId(exceptionID);
                exception.setMessage(message);
            } else {
                exception = new ECDataItemException();
                exception.setId(conn.getResponseCode());
                exception.setMessage(conn.getResponseMessage());
            }
            throw exception;
        }
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        ECClientException exception = new ECClientException();
        exception.setId(408);
        exception.setMessage("Error connecting to elfcloud.fi server");
        authTries = 0;
        throw exception;
    }

}

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From source file:gov.nasa.arc.geocam.geocam.HttpPost.java

protected static void assembleMultipartFiles(DataOutputStream out, Map<String, String> vars,
        Map<String, File> files) throws IOException {
    for (String key : vars.keySet()) {
        out.writeBytes("--" + BOUNDARY + CRLF);
        out.writeBytes("Content-Disposition: form-data; name=\"" + key + "\"" + CRLF);
        out.writeBytes(CRLF);//from  w  w w .  ja va 2  s  .  c om
        out.writeBytes(vars.get(key) + CRLF);
    }

    for (String key : files.keySet()) {
        File f = files.get(key);
        out.writeBytes("--" + BOUNDARY + CRLF);
        out.writeBytes("Content-Disposition: form-data; name=\"" + key + "\"; filename=\"" + f.getName() + "\""
                + CRLF);
        out.writeBytes("Content-Type: application/octet-stream" + CRLF);
        out.writeBytes(CRLF);

        // write file
        int maxBufferSize = 1024;
        FileInputStream fin = new FileInputStream(f);
        int bytesAvailable = fin.available();
        int bufferSize = Math.min(maxBufferSize, bytesAvailable);
        byte[] buffer = new byte[bufferSize];

        int bytesRead = fin.read(buffer, 0, bufferSize);
        while (bytesRead > 0) {
            out.write(buffer, 0, bufferSize);
            bytesAvailable = fin.available();
            bufferSize = Math.min(maxBufferSize, bytesAvailable);
            bytesRead = fin.read(buffer, 0, bufferSize);
        }
    }
    out.writeBytes(CRLF);
    out.writeBytes("--" + BOUNDARY + "--" + CRLF);
    out.writeBytes(CRLF);
}

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From source file:org.apache.fontbox.ttf.TTFSubFont.java

private static long writeTableHeader(DataOutputStream dos, String tag, long offset, byte[] bytes)
        throws IOException {

    int n = bytes.length;
    int nup;/*from  ww w . java 2  s .co m*/
    long checksum = 0L;

    for (nup = 0; nup < n; ++nup) {
        checksum += (((long) bytes[nup]) & 0xffL) << (24 - (nup % 4) * 8);
    }

    checksum &= 0xffffffffL;

    LOG.debug(String.format("Writing table header [%s,%08x,%08x,%08x]", tag, checksum, offset, bytes.length));

    byte[] tagbytes = tag.getBytes("US-ASCII");

    dos.write(tagbytes, 0, 4);
    dos.writeInt((int) checksum);
    dos.writeInt((int) offset);
    dos.writeInt(bytes.length);

    // account for the checksum twice, one time for the header field, on time for the content itself.
    return buildUint32(tagbytes) + checksum + checksum + offset + bytes.length;
}

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