Example usage for java.nio.channels FileChannel write

Introduction

In this page you can find the example usage for java.nio.channels FileChannel write.

Prototype

public final long write(ByteBuffer[] srcs) throws IOException 

Source Link

Document

Writes a sequence of bytes to this channel from the given buffers.

Usage

From source file:com.metamx.druid.index.v1.IndexMerger.java

public static void createIndexDrdFile(byte versionId, File inDir, GenericIndexed<String> availableDimensions,
        GenericIndexed<String> availableMetrics, Interval dataInterval) throws IOException {
    File indexFile = new File(inDir, "index.drd");

    FileChannel channel = null;
    try {/*from  w  w w .  j a v  a  2  s  .com*/
        channel = new FileOutputStream(indexFile).getChannel();
        channel.write(ByteBuffer.wrap(new byte[] { versionId }));

        availableDimensions.writeToChannel(channel);
        availableMetrics.writeToChannel(channel);
        serializerUtils.writeString(channel,
                String.format("%s/%s", dataInterval.getStart(), dataInterval.getEnd()));
    } finally {
        Closeables.closeQuietly(channel);
        channel = null;
    }
    IndexIO.checkFileSize(indexFile);
}

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From source file:org.solmix.commons.util.Files.java

/**
 * ?/*from   w  w  w . j a  v  a  2s .  c  om*/
 *
 * @param f1
 *            ?
 * @param f2
 *            
 * @throws Exception
 */
public static void copyFile(File f1, File f2) throws Exception {
    int length = 2097152;
    FileInputStream in = new FileInputStream(f1);
    FileOutputStream out = new FileOutputStream(f2);
    FileChannel inC = in.getChannel();
    FileChannel outC = out.getChannel();
    ByteBuffer b = null;
    while (true) {
        if (inC.position() == inC.size()) {
            inC.close();
            outC.close();
        }
        if ((inC.size() - inC.position()) < length) {
            length = (int) (inC.size() - inC.position());
        } else
            length = 2097152;
        b = ByteBuffer.allocateDirect(length);
        inC.read(b);
        b.flip();
        outC.write(b);
        outC.force(false);
    }
}

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From source file:org.lexgrid.loader.writer.NoClosingRootTagStaxEventItemWriter.java

@Override
public void close() {
    super.close();

    String rootTag = "</" + getRootTagName() + ">";

    String xml = null;/*from  www  .j  a  va  2s  .c o  m*/
    try {
        xml = FileUtils.readFileToString(xmlFile);
    } catch (IOException e) {
        throw new RuntimeException(e);
    }

    if (!xml.endsWith(rootTag)) {
        try {
            FileOutputStream os = new FileOutputStream(xmlFile, true);
            FileChannel channel = os.getChannel();

            ByteBuffer byteBuffer = ByteBuffer.wrap(rootTag.getBytes());
            channel.write(byteBuffer);
            channel.close();

            xml = FileUtils.readFileToString(xmlFile);
        } catch (IOException ioe) {
            throw new RuntimeException(ioe);
        }
    }
}

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From source file:com.l2jfree.loginserver.L2LoginIdentifier.java

private synchronized void load() {
    if (isLoaded())
        return;//  w w w . ja  v  a 2 s.  c o  m

    File f = new File(System.getProperty("user.home", null), FILENAME);
    ByteBuffer bb = ByteBuffer.allocateDirect(8);

    if (!f.exists() || f.length() != 8) {
        _uid = getRandomUID();
        _loaded = true;
        _log.info("A new UID has been generated for this login server.");

        FileOutputStream fos = null;
        try {
            f.createNewFile();
            fos = new FileOutputStream(f);
            FileChannel fc = fos.getChannel();
            bb.putLong(getUID());
            bb.flip();
            fc.write(bb);
            fos.flush();
        } catch (IOException e) {
            _log.warn("Could not store login server's UID!", e);
        } finally {
            IOUtils.closeQuietly(fos);
            f.setReadOnly();
        }
    } else {
        FileInputStream fis = null;
        try {
            fis = new FileInputStream(f);
            FileChannel fc = fis.getChannel();
            fc.read(bb);
        } catch (IOException e) {
            _log.warn("Could not read stored login server's UID!", e);
        } finally {
            IOUtils.closeQuietly(fis);
        }

        if (bb.position() > 0) {
            bb.flip();
            _uid = bb.getLong();
        } else
            _uid = getRandomUID();
        _loaded = true;
    }
}

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From source file:org.loadosophia.client.LoadosophiaAPIClient.java

protected String[] multipartPost(LinkedList<Part> parts, String URL, int expectedSC) throws IOException {
    log.debug("Request POST: " + URL);
    parts.add(new StringPart("token", token));

    PostMethod postRequest = new PostMethod(URL);
    MultipartRequestEntity multipartRequest = new MultipartRequestEntity(parts.toArray(new Part[parts.size()]),
            postRequest.getParams());/*from www.  ja  v  a 2 s.  c o m*/
    postRequest.setRequestEntity(multipartRequest);
    int result = httpClient.executeMethod(postRequest);
    if (result != expectedSC) {
        String fname = File.createTempFile("error_", ".html").getAbsolutePath();
        notifier.notifyAbout("Saving server error response to: " + fname);
        FileOutputStream fos = new FileOutputStream(fname);
        FileChannel resultFile = fos.getChannel();
        resultFile.write(ByteBuffer.wrap(postRequest.getResponseBody()));
        resultFile.close();
        throw new HttpException("Request returned not " + expectedSC + " status code: " + result);
    }
    byte[] bytes = postRequest.getResponseBody();
    if (bytes == null) {
        bytes = new byte[0];
    }
    String response = new String(bytes);
    return response.trim().split(";");
}

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From source file:org.mhisoft.common.util.FileUtils.java

/**
 * @param source/*from w  w w .j av  a2s  .com*/
 * @param target
 * @throws IOException
 */
public static void copyFile(final File source, final File target) throws IOException {
    FileChannel in = null;
    FileChannel out = null;
    //   long totalFileSize = 0;

    try {
        in = new FileInputStream(source).getChannel();
        out = new FileOutputStream(target).getChannel();
        //totalFileSize = in.size();

        ByteBuffer buffer = ByteBuffer.allocateDirect(BUFFER);
        int readSize = in.read(buffer);
        long totalRead = 0;
        //int progress = 0;

        //long startTime, endTime  ;

        while (readSize != -1) {

            //startTime = System.currentTimeMillis();
            totalRead = totalRead + readSize;

            //progress = (int) (totalRead * 100 / totalFileSize);

            buffer.flip();

            while (buffer.hasRemaining()) {
                out.write(buffer);
                //System.out.printf(".");
                //showPercent(rdProUI, totalSize/size );
            }
            buffer.clear();
            readSize = in.read(buffer);

            //endTime = System.currentTimeMillis();
        }

    } finally {
        close(in);
        close(out);

    }
}

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From source file:org.meerkat.util.FileUtil.java

/**
 * writeToFile//from  w  w w . j  a va2 s. c o  m
 * @param filename
 * @param contents
 */
public final void writeToFile(String filename, String contents) {
    RandomAccessFile destFile = null;
    File tmpFile;
    try {
        tmpFile = new File(filename);
        if (tmpFile.exists()) {
            tmpFile.delete();
        }
        destFile = new RandomAccessFile(filename, "rw");
    } catch (FileNotFoundException e) {
        log.error("Error accessing file: " + filename + " (" + e.getMessage() + ")");
    }

    ByteBuffer buf = ByteBuffer.allocate(contents.length());
    FileChannel outChannel = destFile.getChannel();

    buf.put(contents.getBytes());
    buf.flip(); //buffer set for read

    try {
        outChannel.write(buf);
        destFile.close();
    } catch (IOException e) {
        log.error("Error writing to file " + filename + " (" + e.getMessage() + ")");
    }

}

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From source file:com.sm.store.utils.FileStore.java

private boolean checkSignature(FileChannel channel) throws IOException {
    ByteBuffer intBytes = ByteBuffer.allocate(OFFSET);
    if (channel.size() == 0) {
        intBytes.putInt(MAGIC);/*from  w w w  .j a  v a  2 s . co m*/
        intBytes.flip();
        channel.write(intBytes);
        return true;
    } else {
        channel.read(intBytes);
        intBytes.rewind();
        if (intBytes.getInt() != MAGIC)
            throw new StoreException("Header mismatch expect " + MAGIC + " read " + intBytes.getInt());
    }
    return true;
}

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From source file:cn.wanghaomiao.seimi.struct.Response.java

public void saveTo(File targetFile) {
    FileChannel fo = null;
    try {//from  w  ww . ja va2s.c om
        File pf = targetFile.getParentFile();
        if (!pf.exists()) {
            pf.mkdirs();
        }
        fo = new FileOutputStream(targetFile).getChannel();
        if (BodyType.TEXT.equals(bodyType)) {
            fo.write(ByteBuffer.wrap(getContent().getBytes()));
        } else {
            fo.write(ByteBuffer.wrap(getData()));
        }
    } catch (Exception e) {
        throw new RuntimeException(e);
    } finally {
        if (fo != null) {
            try {
                fo.close();
            } catch (IOException ignore) {
                logger.error(ignore.getMessage(), ignore);
            }
        }
    }
}

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From source file:org.forgerock.openidm.script.javascript.JavaScriptFactory.java

private Script initializeScript(String name, String source, boolean sharedScope) throws ScriptException {
    initDebugListener();/*from   ww w  .ja  v  a2 s. c o  m*/
    if (debugInitialised) {
        try {
            FileChannel outChannel = new FileOutputStream(getTargetFile(name)).getChannel();
            FileLock outLock = outChannel.lock();
            ByteBuffer buf = ByteBuffer.allocate(source.length());
            buf.put(source.getBytes("UTF-8"));
            buf.flip();
            outChannel.write(buf);
            outLock.release();
            outChannel.close();
        } catch (IOException e) {
            logger.warn("JavaScript source was not updated for {}", name, e);
        }
    }
    return new JavaScript(name, source, sharedScope);
}

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