Example usage for java.io FileInputStream read

Introduction

In this page you can find the example usage for java.io FileInputStream read.

Prototype

public int read(byte b[]) throws IOException

Source Link

Document

Reads up to b.length bytes of data from this input stream into an array of bytes.

Usage

From source file:Main.java

public static String getFileContent(File file) {
    FileInputStream f = null;
    try {/* w  w w  . ja v  a 2s. c om*/
        byte[] buffer = new byte[(int) file.length()];

        f = new FileInputStream(file);
        f.read(buffer);
        return new String(buffer);
    } catch (IOException e) {
        throw new RuntimeException(e);
    } finally {
        closeAll(f);
    }
}

From source file:de.suse.swamp.util.FileUtils.java

/**
 * Return the text content of a file//w w w  .  ja va2 s  . c  o m
 */
public static String getText(File file) throws Exception {
    if (file != null && file.exists() && file.canRead()) {
        byte[] b = new byte[(int) file.length()];
        log.debug("Getting text from file: " + file);
        FileInputStream filestream = null;
        filestream = new FileInputStream(file);
        filestream.read(b);
        filestream.close();
        return new String(b);
    } else {
        throw new Exception("Could not read from file: " + file.getAbsolutePath());
    }
}

From source file:com.redsqirl.workflow.utils.FileStream.java

public static byte[] encryptFile(File in) throws Exception {
    int blockSize = 8;
    //Figure out how many bytes are padded
    int paddedCount = blockSize - ((int) in.length() % blockSize);

    //Figure out full size including padding
    int padded = (int) in.length() + paddedCount;

    byte[] decData = new byte[padded];
    FileInputStream inStream = new FileInputStream(in);
    inStream.read(decData);
    inStream.close();//from  w  ww . ja  v  a2  s  . co m

    //Write out padding bytes as per PKCS5 algorithm
    for (int i = (int) in.length(); i < padded; ++i) {
        decData[i] = (byte) paddedCount;
    }

    return encrypt(decData);
}

From source file:Main.java

public static void compressFile(File file, File fileCompressed) throws IOException {

    byte[] buffer = new byte[SIZE_OF_BUFFER];
    ZipOutputStream zipOutputStream = new ZipOutputStream(new FileOutputStream(fileCompressed));
    FileInputStream fileInputStream = new FileInputStream(file);
    zipOutputStream.putNextEntry(new ZipEntry(file.getPath()));

    int size;//from  ww w.  j  a  va 2s . c  o m
    while ((size = fileInputStream.read(buffer)) > 0)
        zipOutputStream.write(buffer, 0, size);

    zipOutputStream.closeEntry();
    fileInputStream.close();
    zipOutputStream.close();
}

From source file:com.nineteendrops.tracdrops.client.core.Utils.java

public static byte[] getBinaryData(String fullFileName, TracProperties tracProperties) {

    File file = new File(fullFileName);
    if (!file.exists()) {
        throw new TracException(MessageUtils.getFullFileNameNotFoundMessage(fullFileName));
    }//ww w  .  java2 s. c o  m

    if (!file.canRead()) {
        throw new TracException(MessageUtils.getFullFileNameNotFoundMessage(fullFileName));
    }

    if (!file.isFile()) {
        throw new TracException(MessageUtils.getFullFileNameNotFoundMessage(fullFileName));
    }

    int maxUploadSize = tracProperties.getIntegerProperty(TracProperties.ATTACHMENT_UPLOAD_MAX_SIZE);
    if (file.length() > maxUploadSize) {
        throw new TracException(MessageUtils.getMessage("core.file.size.exceeded", fullFileName,
                String.valueOf(maxUploadSize)));
    }

    byte[] binaryData;
    try {
        binaryData = new byte[(int) file.length()];
        FileInputStream fis = new FileInputStream(file);
        fis.read(binaryData);
        fis.close();
    } catch (IOException e) {
        throw new TracException(MessageUtils.registerErrorLog(log, "core.unexpected.exception", e.getMessage()),
                e);
    }
    return binaryData;
}

From source file:Main.java

private static String loadBoard(File file) {
    String output = null;// w ww. j a v  a2 s .  co  m
    try {
        FileInputStream is = new FileInputStream(file);
        int size = is.available();
        byte[] buffer = new byte[size];
        is.read(buffer);
        is.close();
        output = new String(buffer);
    } catch (IOException e) {
        e.printStackTrace();
    }

    return output;
}

From source file:be.vds.jtbdive.core.utils.FileUtilities.java

public static String readFileContent(URI uri) throws IOException {
    File file = new File(uri);
    byte[] b = new byte[(int) file.length()];
    FileInputStream is = new FileInputStream(file);
    is.read(b);
    is.close();/*from   ww  w  .ja va 2s . c om*/
    return new String(b);
}

From source file:net.mindengine.oculus.frontend.web.controllers.display.FileDisplayController.java

public static void showFile(HttpServletResponse response, String path, String fileName, String contentType)
        throws IOException {
    File file = new File(path);
    response.setBufferSize((int) file.length());
    response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");

    response.setContentType(contentType);
    response.setContentLength((int) file.length());

    byte[] bytes = new byte[(int) file.length()];
    FileInputStream fis = new FileInputStream(file);
    fis.read(bytes);
    fis.close();//  ww w . j av a2s  .  c  o m

    FileCopyUtils.copy(bytes, response.getOutputStream());
}

From source file:S3ClientSideEncryptionWithSymmetricMasterKey.java

public static SecretKey loadSymmetricAESKey(String path, String algorithm)
        throws IOException, NoSuchAlgorithmException, InvalidKeySpecException, InvalidKeyException {
    // Read private key from file.
    File keyFile = new File(path + "/" + keyName);
    FileInputStream keyfis = new FileInputStream(keyFile);
    byte[] encodedPrivateKey = new byte[(int) keyFile.length()];
    keyfis.read(encodedPrivateKey);
    keyfis.close();//from w  w w  .ja va2 s.c o  m

    // Generate secret key.
    return new SecretKeySpec(encodedPrivateKey, "AES");
}

From source file:be.vds.jtbdive.core.utils.FileUtilities.java

public static void replaceAllInFile(File file, String oldValue, String newValue) throws IOException {
    byte[] b = new byte[(int) file.length()];
    FileInputStream is = new FileInputStream(file);
    is.read(b);
    is.close();//from   ww  w .  j av  a  2  s.  c  om
    String s = new String(b);
    s = s.replaceAll(oldValue, newValue);
    FileOutputStream os = new FileOutputStream(file);
    os.write(s.getBytes());
    os.flush();
    os.close();
}