Example usage for java.nio.channels Channels newChannel

List of usage examples for java.nio.channels Channels newChannel

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Introduction

In this page you can find the example usage for java.nio.channels Channels newChannel.

Prototype

public static WritableByteChannel newChannel(OutputStream out)

Source Link

Document

Constructs a channel that writes bytes to the given stream.

Usage

From source file:siddur.solidtrust.newprice2.Newprice2Controller.java

@RequestMapping(value = "/upload", method = RequestMethod.POST)
public String handleFormUpload(@RequestParam("file") MultipartFile file, Model model, HttpSession session)
        throws IOException {

    //upload/*w  w w. j ava2  s.c om*/
    log4j.info("Start uploading file: " + file.getName() + " with size: " + file.getSize());
    File temp = File.createTempFile("data", ".csv");
    log4j.info("Will save to " + temp.getAbsolutePath());

    InputStream in = null;
    FileOutputStream fout = null;

    try {
        fout = new FileOutputStream(temp);
        FileChannel fcout = fout.getChannel();

        in = file.getInputStream();
        ReadableByteChannel cin = Channels.newChannel(in);

        ByteBuffer buf = ByteBuffer.allocate(1024 * 8);
        while (true) {
            buf.clear();

            int r = cin.read(buf);

            if (r == -1) {
                break;
            }

            buf.flip();
            fcout.write(buf);
        }
    } finally {
        if (in != null) {
            in.close();
        }
        if (fout != null) {
            fout.close();
        }
    }
    FileStatus fs = new FileStatus();
    fs.setFile(temp);
    log4j.info("Uploading complete");

    //fields
    BufferedReader br = null;
    int[] orders;
    String[] fields;
    try {
        in = new FileInputStream(temp);
        br = new BufferedReader(new InputStreamReader(in));

        //first line for fields
        String firstLine = br.readLine();
        fields = StringUtils.split(firstLine, ";");
        ;
        orders = new int[fields.length];
        for (int i = 0; i < orders.length; i++) {
            orders[i] = ArrayUtils.indexOf(FIELDS, fields[i].trim());
        }

        //count
        while (br.readLine() != null) {
            fs.next();
        }
    } finally {
        if (br != null) {
            br.close();
        }
    }

    fs.flip();
    log4j.info("Total rows: " + fs.getTotalRow());

    //persist
    carService.saveCars(fs, orders, carService);
    return "redirect:/v2/upload.html";
}

From source file:com.xxxifan.devbox.library.rxfile.RxFile.java

private static File fileFromUri(Context context, Uri data) throws Exception {
    DocumentFile file = DocumentFile.fromSingleUri(context, data);
    String fileType = file.getType();
    String fileName = file.getName();
    File fileCreated;//from  w  w  w.  j a  v a 2  s  . co m
    ParcelFileDescriptor parcelFileDescriptor = context.getContentResolver().openFileDescriptor(data,
            Constants.READ_MODE);
    InputStream inputStream = new FileInputStream(parcelFileDescriptor.getFileDescriptor());
    Log.e(TAG, "External cache dir:" + context.getExternalCacheDir());
    String filePath = context.getExternalCacheDir() + Constants.FOLDER_SEPARATOR + fileName;
    String fileExtension = fileName.substring((fileName.lastIndexOf('.')) + 1);
    String mimeType = getMimeType(fileName);

    Log.e(TAG, "From Drive guessed type: " + getMimeType(fileName));

    Log.e(TAG, "Extension: " + fileExtension);

    if (fileType.equals(Constants.APPLICATION_PDF) && mimeType == null) {
        filePath += "." + Constants.PDF_EXTENSION;
    }

    if (!createFile(filePath)) {
        return new File(filePath);
    }

    ReadableByteChannel from = Channels.newChannel(inputStream);
    WritableByteChannel to = Channels.newChannel(new FileOutputStream(filePath));
    fastChannelCopy(from, to);
    from.close();
    to.close();
    fileCreated = new File(filePath);
    Log.e(TAG, "Path for made file: " + fileCreated.getAbsolutePath());
    return fileCreated;
}

From source file:com.rogue.logore.update.UpdateHandler.java

/**
 * Downloads the latest jarfile for the {@link Plugin}
 *
 * @since 1.0.0//from ww  w.j a v a 2 s.com
 * @version 1.0.0
 *
 * @TODO Add zip file support
 * @return The download result
 */
public Result download() {
    Result back = Result.UPDATED;
    File updateFolder = this.plugin.getServer().getUpdateFolderFile();
    String url = (String) this.latest.get(this.DL_URL);
    ReadableByteChannel rbc = null;
    FileOutputStream fos = null;
    try {
        URL call = new URL(url);
        rbc = Channels.newChannel(call.openStream());
        fos = new FileOutputStream(this.file);
        fos.getChannel().transferFrom(rbc, 0, 1 << 24);
    } catch (MalformedURLException ex) {
        this.plugin.getLogger().log(Level.SEVERE, "Error finding plugin update to download!", ex);
        back = Result.ERROR_FILENOTFOUND;
    } catch (IOException ex) {
        this.plugin.getLogger().log(Level.SEVERE, "Error transferring plugin data!", ex);
        back = Result.ERROR_DOWNLOAD_FAILED;
    } finally {
        try {
            if (fos != null) {
                fos.close();
            }
            if (rbc != null) {
                rbc.close();
            }
        } catch (IOException ex) {
            this.plugin.getLogger().log(Level.SEVERE, "Error closing streams/channels for download!", ex);
        }
    }
    return back;
}

From source file:it.doqui.index.ecmengine.business.personalization.multirepository.FileContentWriterDynamic.java

@Override
protected WritableByteChannel getDirectWritableChannel() throws ContentIOException {
    try {//from  w w  w .ja v a  2s.  c o m
        // we may not write to an existing file - EVER!!
        if (file.exists() && file.length() > 0) {
            throw new IOException("File exists - overwriting not allowed");
        }
        // create the channel
        WritableByteChannel channel = null;
        if (allowRandomAccess) {
            RandomAccessFile randomAccessFile = new RandomAccessFile(file, "rw"); // will create it
            channel = randomAccessFile.getChannel();
        } else {
            OutputStream os = new FileOutputStream(file);
            channel = Channels.newChannel(os);
        }
        // done
        if (logger.isDebugEnabled()) {
            logger.debug("Opened write channel to file: \n" + "   file: " + file + "\n" + "   random-access: "
                    + allowRandomAccess);
        }
        return channel;
    } catch (Throwable e) {
        throw new ContentIOException("Failed to open file channel: " + this, e);
    }
}

From source file:siddur.solidtrust.fault.FaultController.java

@RequestMapping(value = "/upload", method = RequestMethod.POST)
public String handleFormUpload(@RequestParam("file") MultipartFile file, @RequestParam("version") int v,
        Model model, HttpSession session) throws Exception {

    IFaultPersister persister = getPersister(v);

    //upload//from ww  w  .  j  a  va2  s .  co m
    log4j.info("Start uploading file: " + file.getName() + " with size: " + file.getSize());
    File temp = File.createTempFile("data", ".csv");
    log4j.info("Will save to " + temp.getAbsolutePath());

    InputStream in = null;
    FileOutputStream fout = null;

    try {
        fout = new FileOutputStream(temp);
        FileChannel fcout = fout.getChannel();

        in = file.getInputStream();
        ReadableByteChannel cin = Channels.newChannel(in);

        ByteBuffer buf = ByteBuffer.allocate(1024 * 8);
        while (true) {
            buf.clear();

            int r = cin.read(buf);

            if (r == -1) {
                break;
            }

            buf.flip();
            fcout.write(buf);
        }
    } finally {
        if (in != null) {
            in.close();
        }
        if (fout != null) {
            fout.close();
        }
    }
    log4j.info("Uploading complete");

    //fields
    BufferedReader br = null;
    int[] orders;
    try {
        in = new FileInputStream(temp);
        br = new BufferedReader(new InputStreamReader(in));

        //first line for fields
        String firstLine = br.readLine();
        orders = persister.validateTitle(firstLine);

        //persist
        persister.parseAndSave(br, orders, persister);
    } finally {
        if (br != null) {
            br.close();
        }
    }

    return "redirect:upload.html";
}

From source file:org.biopax.psidev.ontology_manager.impl.OboLoader.java

/**
 * Load an OBO file from an URL./*w  w w . j ava 2s . c om*/
 *
 * @param url the URL to load (must not be null)
 * @return an ontology
 * @see #parseOboFile(File, String)
 */
public OntologyAccess parseOboFile(URL url, String ontologyID) throws OntologyLoaderException {
    // load config file (ie. a map)
    // check if that URL has already been loaded
    // if so, get the associated temp file and check if available
    // if available, then load it and skip URL load
    // if any of the above failed, load it from the network.

    if (url == null) {
        throw new IllegalArgumentException("Please give a non null URL.");
    }

    File ontologyFile = null;

    try {
        if (ontologyFile == null || !ontologyFile.exists() || !ontologyFile.canRead()) {
            // if it is not defined, not there or not readable...
            // Read URL content
            log.info("Loading URL: " + url);
            URLConnection con = url.openConnection();
            long size = con.getContentLength(); // -1 if not stat available
            log.info("size = " + size);

            InputStream is = url.openStream();

            // make the temporary file name specific to the URL
            String name = null;
            String filename = url.getFile();
            int idx = filename.lastIndexOf('/');
            if (idx != -1) {
                name = filename.substring(idx + 1, filename.length());
                name = name.replaceAll("[.,;:&^%$@*?=]", "_");
            } else {
                name = "unknown";
            }

            ontologyFile = Files.createTempFile(name + "_", ".obo").toFile();
            ontologyFile.deleteOnExit();
            log.debug("The OBO file will be temporary stored as: " + ontologyFile.getAbsolutePath());

            FileOutputStream out = new FileOutputStream(ontologyFile);
            if (size == -1)
                size = 1024 * 1024 * 1024; //Integer.MAX_VALUE;
            ReadableByteChannel source = Channels.newChannel(is);
            size = out.getChannel().transferFrom(source, 0, size);
            log.info(size + " bytes downloaded");

            is.close();
            out.flush();
            out.close();
        }

        if (ontologyFile == null) {
            log.error("The ontology file is still null...");
        }

        // Parse file
        return parseOboFile(ontologyFile, ontologyID);

    } catch (IOException e) {
        throw new OntologyLoaderException("Error while loading URL (" + url + ")", e);
    }
}

From source file:com.doplgangr.secrecy.FileSystem.File.java

public java.io.File readFile(CryptStateListener listener) {
    decrypting = true;//from  w w w . j  av a  2 s. c  o m
    InputStream is = null;
    OutputStream out = null;
    java.io.File outputFile = null;
    try {
        outputFile = java.io.File.createTempFile("tmp" + name, "." + FileType, storage.getTempFolder());
        outputFile.mkdirs();
        outputFile.createNewFile();
        AES_Encryptor enc = new AES_Encryptor(key);
        is = new CipherInputStream(new FileInputStream(file), enc.decryptstream());
        listener.setMax((int) file.length());
        ReadableByteChannel inChannel = Channels.newChannel(is);
        FileChannel outChannel = new FileOutputStream(outputFile).getChannel();
        ByteBuffer byteBuffer = ByteBuffer.allocate(Config.bufferSize);
        while (inChannel.read(byteBuffer) >= 0 || byteBuffer.position() > 0) {
            byteBuffer.flip();
            outChannel.write(byteBuffer);
            byteBuffer.compact();
            listener.updateProgress((int) outChannel.size());
        }
        inChannel.close();
        outChannel.close();
        Util.log(outputFile.getName(), outputFile.length());
        return outputFile;
    } catch (FileNotFoundException e) {
        listener.onFailed(2);
        Util.log("Encrypted File is missing", e.getMessage());
    } catch (IOException e) {
        Util.log("IO Exception while decrypting", e.getMessage());
        if (e.getMessage().contains("pad block corrupted"))
            listener.onFailed(1);
        else
            e.printStackTrace();
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        listener.Finished();
        decrypting = false;
        try {
            if (is != null) {
                is.close();
            }
            if (out != null) {
                out.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    // An error occured. Too Bad
    if (outputFile != null)
        storage.purgeFile(outputFile);
    return null;
}

From source file:org.eclipse.packagedrone.utils.rpm.build.PayloadRecorder.java

public Result addFile(final String targetPath, final ByteBuffer data,
        final Consumer<CpioArchiveEntry> customizer) throws IOException {
    final long size = data.remaining();

    final CpioArchiveEntry entry = new CpioArchiveEntry(targetPath);
    entry.setSize(size);/*  www .  j a v a 2 s.co  m*/

    if (customizer != null) {
        customizer.accept(entry);
    }

    this.archiveStream.putArchiveEntry(entry);

    // record digest

    MessageDigest digest;
    try {
        digest = createDigest();
        digest.update(data.slice());
    } catch (final NoSuchAlgorithmException e) {
        throw new IOException(e);
    }

    // write data

    final WritableByteChannel channel = Channels.newChannel(this.archiveStream);
    while (data.hasRemaining()) {
        channel.write(data);
    }

    // close archive entry

    this.archiveStream.closeArchiveEntry();

    return new Result(size, digest.digest());
}

From source file:com.discovery.darchrow.io.IOWriteUtil.java

/**
 * NIO API ?? ()./*from w w  w .  j  a v  a  2s  .  c  om*/
 *
 * @param bufferLength
 *            the buffer length
 * @param inputStream
 *            the input stream
 * @param outputStream
 *            the output stream
 * @since 1.0.8
 * @since jdk1.4
 */
private static void writeUseNIO(int bufferLength, InputStream inputStream, OutputStream outputStream) {
    int i = 0;
    int sumSize = 0;
    int j = 0;

    ///2 
    //As creme de la creme with regard to performance, you could use NIO Channels and ByteBuffer. 

    ReadableByteChannel readableByteChannel = Channels.newChannel(inputStream);
    WritableByteChannel writableByteChannel = Channels.newChannel(outputStream);

    ByteBuffer byteBuffer = ByteBuffer.allocate(bufferLength);

    try {
        while (readableByteChannel.read(byteBuffer) != -1) {
            byteBuffer.flip();
            j = writableByteChannel.write(byteBuffer);
            sumSize += j;
            byteBuffer.clear();
            i++;
        }

        if (LOGGER.isDebugEnabled()) {
            LOGGER.debug("Write data over,sumSize:[{}],bufferLength:[{}],loopCount:[{}]",
                    FileUtil.formatSize(sumSize), bufferLength, i);
        }
    } catch (IOException e) {
        throw new UncheckedIOException(e);
    } finally {
        IOUtils.closeQuietly(outputStream);
        IOUtils.closeQuietly(writableByteChannel);
        IOUtils.closeQuietly(inputStream);
        IOUtils.closeQuietly(readableByteChannel);
    }
}

From source file:at.ac.tuwien.infosys.util.ImageUtil.java

private void saveFile(URL url, Path file) throws IOException {
    ReadableByteChannel rbc = Channels.newChannel(url.openStream());
    FileChannel channel = FileChannel.open(file, EnumSet.of(StandardOpenOption.CREATE,
            StandardOpenOption.TRUNCATE_EXISTING, StandardOpenOption.WRITE));
    channel.transferFrom(rbc, 0, Long.MAX_VALUE);
    channel.close();//w  w w  .  j  a va2 s .  c  o m
}