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:net.sf.zekr.common.util.CryptoUtils.java

public static byte[] sign(String datafile, PrivateKey prvKey, String sigAlg) throws Exception {
    Signature sig = Signature.getInstance(sigAlg);
    sig.initSign(prvKey);//from  w w w  . j a va 2s .  c  o  m
    FileInputStream fis = new FileInputStream(datafile);
    byte[] dataBytes = new byte[1024];
    int nread = fis.read(dataBytes);
    while (nread > 0) {
        sig.update(dataBytes, 0, nread);
        nread = fis.read(dataBytes);
    }
    return sig.sign();
}

From source file:com.ibm.ids.example.ShowResult.java

public static String getVulnerableSource(String file)
        throws java.io.IOException, java.io.FileNotFoundException {
    FileInputStream fis = new FileInputStream(file);
    byte[] buf = new byte[100];
    fis.read(buf);
    String ret = new String(buf);
    fis.close();//from   w ww  .  j a v  a2  s .c o  m
    return ret;
}

From source file:Main.java

public static byte[] readByteArray(File file) {
    if (!file.exists() || !file.isFile()) {
        return null;
    }/*from w ww  .j  av  a 2 s  . co m*/
    byte[] data = null;
    FileInputStream stream = null;
    try {
        stream = new FileInputStream(file);
        data = new byte[(int) file.length()];
        stream.read(data);
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        if (stream != null) {
            try {
                stream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    return data;
}

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

public static void replaceAllInFile(File file, String[] oldValues, String[] newValues) throws IOException {
    byte[] b = new byte[(int) file.length()];
    FileInputStream is = new FileInputStream(file);
    is.read(b);
    is.close();/*from  w ww  . j a v  a2 s  . c om*/
    String s = new String(b);

    for (int i = 0; i < oldValues.length; i++) {
        s = s.replaceAll(oldValues[i], newValues[i]);
    }

    FileOutputStream os = new FileOutputStream(file);
    os.write(s.getBytes());
    os.flush();
    os.close();

}

From source file:Main.java

public static String[] getAvailableSchedulers() {
    File iofile = new File("/sys/block/mmcblk0/queue/scheduler");
    String s = "";
    FileInputStream fin2 = null;
    try {//from  ww w.  ja  v  a  2s  . co m
        fin2 = new FileInputStream(iofile);
        byte fileContent[] = new byte[(int) iofile.length()];
        fin2.read(fileContent);
        s = new String(fileContent).trim().split("\n")[0];
    } catch (FileNotFoundException e) {
        //System.out.println("File not found" + e);
    } catch (IOException ioe) {
        //System.out.println("Exception while reading file " + ioe);
    } finally {
        try {
            if (fin2 != null) {
                fin2.close();
            }
        } catch (IOException ioe) {
            //System.out.println("Error while closing stream: " + ioe);
        }
    }
    String[] IOSchedulers = s.replace("[", "").replace("]", "").split(" ");
    return IOSchedulers;
}

From source file:com.kyon.klib.base.KFileUtils.java

public static String readFile(Context context, String fileName) throws IOException {
    String res = "";
    try {/*from w  w w . j a  va2 s .  c o m*/
        FileInputStream fIn = context.openFileInput(fileName);
        int length = fIn.available();
        byte[] buffer = new byte[length];
        fIn.read(buffer);
        res = EncodingUtils.getString(buffer, "UTF-8");
        fIn.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return res;

}

From source file:Main.java

public static String getCurrentScheduler() {
    File iofile = new File("/sys/block/mmcblk0/queue/scheduler");
    String s = "";
    FileInputStream fin2 = null;
    try {//from w w  w.java2  s.  co  m
        fin2 = new FileInputStream(iofile);
        byte fileContent[] = new byte[(int) iofile.length()];
        fin2.read(fileContent);
        s = new String(fileContent).trim().split("\n")[0];
    } catch (FileNotFoundException e) {
        //System.out.println("File not found" + e);
    } catch (IOException ioe) {
        //System.out.println("Exception while reading file " + ioe);
    } finally {
        try {
            if (fin2 != null) {
                fin2.close();
            }
        } catch (IOException ioe) {
            //System.out.println("Error while closing stream: " + ioe);
        }
    }
    int bropen = s.indexOf("[");
    int brclose = s.lastIndexOf("]");
    return s.substring(bropen + 1, brclose);
}

From source file:org.phpmaven.pear.impl.Helper.java

/**
 * Returns the binary file contents.//from   w ww .  j av  a 2s.c om
 * @param uri URI of the resource.
 * @return the files content.
 * @throws IOException thrown on errors.
 */
public static byte[] getBinaryFileContents(String uri) throws IOException {
    // is it inside the local filesystem?
    if (uri.startsWith("file://")) {
        final File channelFile = new File(uri.substring(7));

        final byte[] result = new byte[(int) channelFile.length()];
        final FileInputStream fis = new FileInputStream(channelFile);
        fis.read(result);
        return result;
    }

    // try http connection
    final HttpClient client = new DefaultHttpClient();
    final HttpGet httpget = new HttpGet(uri);
    final HttpResponse response = client.execute(httpget);
    if (response.getStatusLine().getStatusCode() != HttpStatus.SC_OK) {
        throw new IOException("Invalid http status: " + response.getStatusLine().getStatusCode() + " / "
                + response.getStatusLine().getReasonPhrase());
    }
    final HttpEntity entity = response.getEntity();
    if (entity == null) {
        throw new IOException("Empty response.");
    }
    return EntityUtils.toByteArray(entity);
}

From source file:com.ewcms.common.io.HtmlFileUtil.java

public static byte[] readByte(String fileName) {
    try {/*  w  w  w  .j av  a 2s . c om*/
        fileName = normalizePath(fileName);
        FileInputStream fis = new FileInputStream(fileName);
        byte r[] = new byte[fis.available()];
        fis.read(r);
        fis.close();
        return r;
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }
}

From source file:Main.java

public static KeyPair loadKeyPair(Context context, String name)
        throws IOException, NoSuchAlgorithmException, InvalidKeySpecException {
    // Read Public Key.
    File filePublicKey = new File(context.getFilesDir(), name + "_public.key");
    FileInputStream fis = new FileInputStream(filePublicKey);
    byte[] encodedPublicKey = new byte[(int) filePublicKey.length()];
    fis.read(encodedPublicKey);
    fis.close();//ww w.  ja  v a  2s.co m

    // Read Private Key.
    File filePrivateKey = new File(context.getFilesDir(), name + "_private.key");
    fis = new FileInputStream(filePrivateKey);
    byte[] encodedPrivateKey = new byte[(int) filePrivateKey.length()];
    fis.read(encodedPrivateKey);
    fis.close();

    // Generate KeyPair.
    KeyFactory keyFactory = KeyFactory.getInstance("RSA");
    X509EncodedKeySpec publicKeySpec = new X509EncodedKeySpec(encodedPublicKey);
    PublicKey publicKey = keyFactory.generatePublic(publicKeySpec);

    PKCS8EncodedKeySpec privateKeySpec = new PKCS8EncodedKeySpec(encodedPrivateKey);
    PrivateKey privateKey = keyFactory.generatePrivate(privateKeySpec);

    return new KeyPair(publicKey, privateKey);
}