Example usage for java.nio.channels FileChannel write

List of usage examples for java.nio.channels FileChannel write

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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:Main.java

public static void copyInputStreamToFile(InputStream inputStream, File file) throws IOException {
    FileOutputStream fileOutputStream = null;
    FileChannel fileChannel = null;
    try {/* w  w  w  . j a va 2s  .  co m*/
        fileOutputStream = new FileOutputStream(file);
        fileChannel = fileOutputStream.getChannel();
        byte[] bArr = new byte[4096];
        while (true) {
            int read = inputStream.read(bArr);
            if (read <= 0) {
                break;
            }
            fileChannel.write(ByteBuffer.wrap(bArr, SYSTEM_ROOT_STATE_DISABLE, read));
        }

    } catch (Throwable throwable) {
        throwable.printStackTrace();
    } finally {

        if (inputStream != null) {
            try {
                inputStream.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        if (fileChannel != null) {
            try {
                fileChannel.close();
            } catch (Exception e2) {
                e2.printStackTrace();
            }
        }
        if (fileOutputStream != null) {
            try {
                fileOutputStream.close();
            } catch (Exception e22) {
                e22.printStackTrace();
            }
        }
    }
}

From source file:ja.centre.util.io.Files.java

public static void copy(String source, String destination) throws IOException {
    FileInputStream fis = null;/*from   www . j  a  v  a  2  s . co m*/
    FileOutputStream fos = null;
    try {
        fis = new FileInputStream(source);
        fos = new FileOutputStream(destination);

        FileChannel fic = null;
        FileChannel foc = null;
        try {
            fic = fis.getChannel();
            foc = fos.getChannel();

            ByteBuffer buffer = ByteBuffer.allocate(COPY_BUFFER_SIZE);
            do {
                buffer.flip();
                foc.write(buffer);
                buffer.clear();
            } while (fic.read(buffer) != -1);
        } finally {
            closeQuietly(fic);
            closeQuietly(foc);
        }
    } finally {
        closeQuietly(fis);
        closeQuietly(fos);
    }
}

From source file:MainClass.java

private static void test() throws Exception {
    long[] primes = new long[] { 1, 2, 3, 5, 7 };
    File aFile = new File("C:/test/primes.txt");
    FileOutputStream outputFile = null;
    outputFile = new FileOutputStream(aFile);
    FileChannel file = outputFile.getChannel();
    ByteBuffer[] buffers = new ByteBuffer[3];
    buffers[0] = ByteBuffer.allocate(8);
    buffers[2] = ByteBuffer.allocate(8);
    String primeStr = null;/*from w ww  . j  a v  a  2 s.  co m*/
    for (long prime : primes) {
        primeStr = "prime = " + prime;
        buffers[0].putDouble((double) primeStr.length()).flip();
        buffers[1] = ByteBuffer.allocate(primeStr.length());
        buffers[1].put(primeStr.getBytes()).flip();
        buffers[2].putLong(prime).flip();
        file.write(buffers);
        buffers[0].clear();
        buffers[2].clear();
    }
    System.out.println("File written is " + file.size() + "bytes.");
    outputFile.close();
}

From source file:Main.java

public static void copyInputStreamToFile(InputStream inputStream, File file) throws IOException {
    FileOutputStream fileOutputStream = null;
    Throwable th;//from  w  w w. j  a  va  2 s  . co  m
    FileChannel fileChannel = null;
    try {
        fileOutputStream = new FileOutputStream(file);
        try {
            fileChannel = fileOutputStream.getChannel();
            byte[] bArr = new byte[4096];
            while (true) {
                int read = inputStream.read(bArr);
                if (read <= 0) {
                    break;
                }
                fileChannel.write(ByteBuffer.wrap(bArr, SYSTEM_ROOT_STATE_DISABLE, read));
            }
            if (inputStream != null) {
                try {
                    inputStream.close();
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
            if (fileChannel != null) {
                try {
                    fileChannel.close();
                } catch (Exception e2) {
                    e2.printStackTrace();
                }
            }
            if (fileOutputStream != null) {
                try {
                    fileOutputStream.close();
                } catch (Exception e22) {
                    e22.printStackTrace();
                }
            }
        } catch (Throwable th2) {
            th = th2;
            if (inputStream != null) {
                try {
                    inputStream.close();
                } catch (Exception e3) {
                    e3.printStackTrace();
                }
            }
            if (fileChannel != null) {
                try {
                    fileChannel.close();
                } catch (Exception e4) {
                    e4.printStackTrace();
                }
            }
            if (fileOutputStream != null) {
                try {
                    fileOutputStream.close();
                } catch (Exception e42) {
                    e42.printStackTrace();
                }
            }
            throw th;
        }
    } catch (Throwable th3) {
        th = th3;
        Object obj = fileChannel;
        if (inputStream != null) {
            inputStream.close();
        }
        if (fileChannel != null) {
            fileChannel.close();
        }
        if (fileOutputStream != null) {
            fileOutputStream.close();
        }

    }
}

From source file:cn.com.sunjiesh.wechat.handler.WechatBaseHandler.java

/**
 * ?//from w  w w .jav  a2 s .  c o  m
 *
 * @param httpResponse httpResponse
 * @param fileTpye fileTpye
 * @return File
 * @throws ServiceException ServiceException
 */
public static File getFileResponseFromHttpResponse(HttpResponse httpResponse, String fileTpye)
        throws ServiceException {
    File file = null;

    try {
        StatusLine httpStatusLine = httpResponse.getStatusLine();
        HttpEntity httpEntity = httpResponse.getEntity();
        int statusCode = httpStatusLine.getStatusCode();
        if (statusCode != HttpStatus.SC_OK) {
            LOGGER.error(DOWNLOAD_FILE_ERROR);
            throw new ServiceException(DOWNLOAD_FILE_ERROR);
        }

        String fileName = UUID.randomUUID().toString();
        fileName = fileName + "." + fileTpye;
        InputStream is = httpEntity.getContent();
        if (!StringUtils.isEmpty(fileName)) {
            //??
            file = new File("/var/tmp", fileName);
            if (file.exists()) {
                file.delete();
            }
            FileOutputStream fos = new FileOutputStream(file, false);
            FileChannel fileChannel = fos.getChannel();
            ByteBuffer byteBuffer = null;
            byte[] tempBytes = new byte[4096];
            while (is.read(tempBytes) > 0) {
                byteBuffer = ByteBuffer.wrap(tempBytes);
                fileChannel.write(byteBuffer);
            }
            if (fos != null) {
                fos.close();
            }
            fileChannel.close();
        }
    } catch (IllegalStateException e) {
        LOGGER.error(DOWNLOAD_FILE_ERROR, e);
        throw new ServiceException(DOWNLOAD_FILE_ERROR, e);
    } catch (FileNotFoundException e) {
        LOGGER.error(DOWNLOAD_FILE_ERROR, e);
        throw new ServiceException(DOWNLOAD_FILE_ERROR, e);
    } catch (IOException e) {
        LOGGER.error(DOWNLOAD_FILE_ERROR, e);
        throw new ServiceException(DOWNLOAD_FILE_ERROR, e);
    }

    return file;
}

From source file:org.neo4j.io.fs.FileUtils.java

public static void writeAll(FileChannel channel, ByteBuffer src) throws IOException {
    long bytesToWrite = src.limit() - src.position();
    int bytesWritten;
    while ((bytesToWrite -= (bytesWritten = channel.write(src))) > 0) {
        if (bytesWritten <= 0) {
            throw new IOException("Unable to write to disk, reported bytes written was " + bytesWritten);
        }/* w  w  w.  j av a2 s. c o m*/
    }
}

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

/**
 * ?/*w ww  .  j  a va 2  s . c  om*/
 *
 * @param content
 * @param filePath
 * @return
 */
public static File writeFile(byte[] content, String filePath) {
    FileOutputStream out = null;
    FileChannel outChannel = null;
    File file = new File(filePath);

    if (file.exists()) {
        file.delete();
    }

    if (!file.getParentFile().exists()) {
        file.getParentFile().mkdirs();
    }

    ByteBuffer outBuffer = ByteBuffer.allocate(content.length);
    outBuffer.put(content);
    outBuffer.flip();
    try {
        out = new FileOutputStream(file);

        outChannel = out.getChannel();

        outChannel.write(outBuffer);

    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        if (outChannel != null) {
            try {
                outChannel.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        if (out != null) {
            try {
                out.flush();
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                out.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    return file.exists() ? file : null;
}

From source file:Main.java

public static boolean fileCopy(File srcFile, File dstFile) {
    int length = 1048891;
    FileChannel inC = null;/*from  w ww .  ja v a 2  s  .  c om*/
    FileChannel outC = null;
    try {
        FileInputStream in = new FileInputStream(srcFile);
        FileOutputStream out = new FileOutputStream(dstFile);
        inC = in.getChannel();
        outC = out.getChannel();
        ByteBuffer b = null;
        while (inC.position() < inC.size()) {
            if ((inC.size() - inC.position()) < length) {
                length = (int) (inC.size() - inC.position());
            } else {
                length = 1048891;
            }
            b = ByteBuffer.allocateDirect(length);
            inC.read(b);
            b.flip();
            outC.write(b);
            outC.force(false);
        }

        return true;
    } catch (IOException e) {
        e.printStackTrace();
        return false;
    } finally {
        try {
            if (inC != null && inC.isOpen()) {
                inC.close();
            }
            if (outC != null && outC.isOpen()) {
                outC.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

From source file:net.filterlogic.util.imaging.ToTIFF.java

private static String bigEndian2LittleEndian(String fileName) throws FileNotFoundException, IOException {

    //import java.nio.ByteBuffer;
    //import java.nio.ByteOrder;
    //import java.nio.channels.FileChannel;
    //import java.io.FileOutputStream;

    byte[] imgData = loadFileToByteArray(fileName);
    String newFileName = fileName + ".be2le.tif";

    ByteBuffer buffer = ByteBuffer.allocate(imgData.length);
    buffer.order(ByteOrder.LITTLE_ENDIAN);
    buffer.put(imgData);// w w w  .  j a v a 2s  .  c o m
    FileChannel out = new FileOutputStream(newFileName).getChannel();
    out.write(buffer);
    out.close();

    return newFileName;
}

From source file:com.ah.ui.actions.home.clientManagement.service.CertificateGenSV.java

public static void writeFile(String pathName, byte[] bytes) throws IOException {
    File fl = new File(pathName);
    if (existFile(pathName)) {
        fl.delete();// w  w  w  . ja va  2s  .co  m
    }
    ByteBuffer bb = ByteBuffer.allocate(bytes.length);
    bb.put(bytes);
    bb.flip();
    FileChannel fileChannel = null;
    try {
        fileChannel = new FileOutputStream(pathName, false).getChannel();
        fileChannel.write(bb);
    } finally {
        if (fileChannel != null) {
            try {
                fileChannel.close();
            } catch (IOException ioe) {
                ioe.printStackTrace();
            }
        }
    }
}