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:game.com.HandleDownloadFolderServlet.java

public static void addDirToZipArchive(ZipOutputStream zos, File fileToZip, String parrentDirectoryName)
        throws Exception {
    if (fileToZip == null || !fileToZip.exists()) {
        return;//from w w w  .j a v a  2 s  .  c  o  m
    }

    String zipEntryName = fileToZip.getName();
    if (parrentDirectoryName != null && !parrentDirectoryName.isEmpty()) {
        zipEntryName = parrentDirectoryName + "/" + fileToZip.getName();
    }

    if (fileToZip.isDirectory()) {
        System.out.println("+" + zipEntryName);
        for (File file : fileToZip.listFiles()) {
            addDirToZipArchive(zos, file, zipEntryName);
        }
    } else {
        System.out.println("   " + zipEntryName);
        byte[] buffer = new byte[1024];
        FileInputStream fis = new FileInputStream(fileToZip);
        zos.putNextEntry(new ZipEntry(zipEntryName));
        int length;
        while ((length = fis.read(buffer)) > 0) {
            zos.write(buffer, 0, length);
        }
        zos.closeEntry();
        fis.close();
    }
}

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From source file:Main.java

private static byte[] MD5EncodeFileByte(File filename) {
    if (filename != null) {
        int i;/*from  ww  w . ja va 2  s.  c  o  m*/
        MessageDigest md = null;
        try {
            md = MessageDigest.getInstance("MD5");
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
            return null;
        }
        byte[] data = new byte[4096];
        FileInputStream fis;
        try {
            fis = new FileInputStream(filename);
        } catch (FileNotFoundException e2) {
            e2.printStackTrace();
            return null;
        }
        while (true) {
            try {
                i = fis.read(data);
                if (i != -1) {
                    md.update(data, 0, i);
                } else {
                    fis.close();
                    return md.digest();
                }
            } catch (IOException e) {
                e.printStackTrace();
                try {
                    fis.close();
                } catch (IOException e1) {
                    e1.printStackTrace();
                }
                return null;
            }
        }
    }
    return null;
}

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From source file:org.openmrs.module.omodexport.util.OmodExportUtil.java

/**
 * Utility method for zipping a list of files
 * /*from w  w w . ja  v a 2 s  .  c o  m*/
 * @param files -The list of files to zip
 * @param out
 * @throws FileNotFoundException
 * @throws IOException
 */
public static void zipFiles(List<File> files, ZipOutputStream out) throws FileNotFoundException, IOException {
    byte[] buffer = new byte[4096]; // Create a buffer for copying
    int bytesRead;

    for (File f : files) {
        if (f.isDirectory())
            continue;// Ignore directory
        FileInputStream in = new FileInputStream(f); // Stream to read file
        out.putNextEntry(new ZipEntry(f.getName())); // Store entry
        while ((bytesRead = in.read(buffer)) != -1)
            out.write(buffer, 0, bytesRead);
        in.close();
    }

    out.close();
}

---

From source file:com.sshtools.j2ssh.transport.publickey.SshPrivateKeyFile.java

/**
 *
 *
 * @param keyfile/*from w  w w. j ava2 s. c  om*/
 *
 * @return
 *
 * @throws InvalidSshKeyException
 * @throws IOException
 */
public static SshPrivateKeyFile parse(File keyfile) throws InvalidSshKeyException, IOException {
    FileInputStream in = new FileInputStream(keyfile);
    byte[] data = null;

    try {
        data = new byte[in.available()];
        in.read(data);
    } finally {
        try {
            if (in != null) {
                in.close();
            }
        } catch (IOException ex) {
        }
    }

    return parse(data);
}

---

From source file:com.zimbra.cs.service.util.ItemDataFile.java

static void addFile(File f, String topdir, Set<MailItem.Type> types, TarOutputStream tos) throws IOException {
    ItemData id = null;/* w w w.j  ava2  s . c  o  m*/
    String path = f.getPath();
    File mf = new File(path + ".meta");
    TarEntry te;
    MailItem.Type type;

    if (path.indexOf(topdir) == 0)
        path = path.substring(topdir.length() + 1);
    path = path.replace('\\', '/');
    if (mf.exists()) {
        byte[] meta = new byte[(int) mf.length()];
        FileInputStream fis = new FileInputStream(mf);

        if (fis.read(meta) != mf.length()) {
            throw new IOException("meta read err: " + f.getPath());
        }
        fis.close();
        id = new ItemData(meta);
        type = MailItem.Type.of(id.ud.type);
        if (skip(types, type)) {
            return;
        }
        te = new TarEntry(path + ".meta");
        System.out.println(te.getName());
        te.setGroupName(MailItem.Type.of(id.ud.type).toString());
        te.setMajorDeviceId(id.ud.type);
        te.setModTime(mf.lastModified());
        te.setSize(meta.length);
        tos.putNextEntry(te);
        tos.write(meta);
        tos.closeEntry();
    } else {
        if (path.endsWith(".csv") || path.endsWith(".vcf")) {
            type = MailItem.Type.CONTACT;
        } else if (path.endsWith(".eml")) {
            type = MailItem.Type.MESSAGE;
        } else if (path.endsWith(".ics")) {
            if (path.startsWith("Tasks/")) {
                type = MailItem.Type.TASK;
            } else {
                type = MailItem.Type.APPOINTMENT;
            }
        } else if (path.endsWith(".wiki")) {
            type = MailItem.Type.WIKI;
        } else {
            type = MailItem.Type.DOCUMENT;
        }
        if (skip(types, type)) {

        }
        return;
    }
    if (f.exists() && !f.isDirectory() && (id != null || types == null)) {
        byte[] buf = new byte[TarBuffer.DEFAULT_BLKSIZE];
        FileInputStream fis = new FileInputStream(f);
        int in;

        te = new TarEntry(path);
        System.out.println(te.getName());
        te.setGroupName(MailItem.Type.of(id.ud.type).toString());
        te.setMajorDeviceId(id.ud.type);
        te.setModTime(mf.lastModified());
        te.setSize(f.length());
        tos.putNextEntry(te);
        while ((in = fis.read(buf)) > 0)
            tos.write(buf, 0, in);
        fis.close();
        tos.closeEntry();
    }
}

---

From source file:Main.java

public static void copy(String source, String target, boolean isFolder) throws Exception {
    if (isFolder) {
        (new File(target)).mkdirs();
        File a = new File(source);
        String[] file = a.list();
        File temp = null;//from  www . ja va2  s.  c om
        for (int i = 0; i < file.length; i++) {
            if (source.endsWith(File.separator)) {
                temp = new File(source + file[i]);
            } else {
                temp = new File(source + File.separator + file[i]);
            }
            if (temp.isFile()) {
                FileInputStream input = new FileInputStream(temp);
                FileOutputStream output = new FileOutputStream(target + "/" + (temp.getName()).toString());
                byte[] b = new byte[1024];
                int len;
                while ((len = input.read(b)) != -1) {
                    output.write(b, 0, len);
                }
                output.flush();
                output.close();
                input.close();
            }
            if (temp.isDirectory()) {
                copy(source + "/" + file[i], target + "/" + file[i], true);
            }
        }
    } else {
        int byteread = 0;
        File oldfile = new File(source);
        if (oldfile.exists()) {
            InputStream inStream = new FileInputStream(source);
            File file = new File(target);
            file.getParentFile().mkdirs();
            file.createNewFile();
            FileOutputStream fs = new FileOutputStream(file);
            byte[] buffer = new byte[1024];
            while ((byteread = inStream.read(buffer)) != -1) {
                fs.write(buffer, 0, byteread);
            }
            inStream.close();
            fs.close();
        }
    }
}

---

From source file:Main.java

private static void zipDir(String dir, ZipOutputStream out) throws IOException {
    File directory = new File(dir);

    URI base = directory.toURI();

    ArrayList<File> filesToZip = new ArrayList<File>();

    GetFiles(directory, filesToZip);//w w  w . ja va  2  s .c o  m

    for (int i = 0; i < filesToZip.size(); ++i) {
        FileInputStream in = new FileInputStream(filesToZip.get(i));

        String name = base.relativize(filesToZip.get(i).toURI()).getPath();

        out.putNextEntry(new ZipEntry(name));

        byte[] buf = new byte[4096];
        int bytes = 0;

        while ((bytes = in.read(buf)) != -1) {
            out.write(buf, 0, bytes);
        }

        out.closeEntry();

        in.close();
    }

    out.finish();
    out.flush();
}

---

From source file:com.vexsoftware.votifier.util.rsa.RSAIO.java

/**
 * Loads an RSA key pair from a directory. The directory must have the files
 * "public.key" and "private.key"./*from  w  ww . java2  s.c o  m*/
 * 
 * @param directory
 *            The directory to load from
 * @return The key pair
 * @throws Exception
 *             If an error occurs
 */
public static KeyPair load(File directory) throws Exception {
    // Read the public key file.
    File publicKeyFile = new File(directory + "/public.key");
    FileInputStream in = null;
    byte[] encodedPublicKey;
    try {
        in = new FileInputStream(directory + "/public.key");
        encodedPublicKey = new byte[(int) publicKeyFile.length()];
        in.read(encodedPublicKey);
        encodedPublicKey = DatatypeConverter.parseBase64Binary(new String(encodedPublicKey));
    } finally {
        try {
            in.close();
        } catch (Exception exception) {
            // ignore
        }
    }

    // Read the private key file.
    File privateKeyFile = new File(directory + "/private.key");
    byte[] encodedPrivateKey;
    try {
        in = new FileInputStream(directory + "/private.key");
        encodedPrivateKey = new byte[(int) privateKeyFile.length()];
        in.read(encodedPrivateKey);
        encodedPrivateKey = DatatypeConverter.parseBase64Binary(new String(encodedPrivateKey));
    } finally {
        try {
            in.close();
        } catch (Exception exception) {
            // ignore
        }
    }

    // Instantiate and return the key pair.
    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);
}

---

From source file:com.attilax.zip.FileUtil.java

/**
 * //w  w w. j  a  v  a2 s. co  m
 * 
 * @param source     ?
 * @param target         
 * @param cache        ?
 * @throws Exception
 */
public static void mv(String source, String target, int cache) throws Exception {
    if (source.trim().equals(target.trim()))
        return;
    byte[] cached = new byte[cache];
    FileInputStream fromFile = new FileInputStream(source);
    FileOutputStream toFile = new FileOutputStream(target);
    while (fromFile.read(cached) != -1) {
        toFile.write(cached);
    }
    toFile.flush();
    toFile.close();
    fromFile.close();
    new File(source).deleteOnExit();
}

---

From source file:edu.cornell.mannlib.vitro.webapp.auth.identifier.common.IsBlacklisted.java

/**
 * Runs the SPARQL query in the file with the uri of the individual
 * substituted in.//from www .  ja  v a  2s.c  o  m
 * 
 * The URI of ind will be substituted into the query where ever the token
 * "?individualURI" is found.
 * 
 * If there are any solution sets, then the URI of the variable named
 * "cause" will be returned. Make sure that it is a resource with a URI.
 * Otherwise null will be returned.
 */
private static String runSparqlFileForBlacklist(File file, Individual ind, ServletContext context) {
    if (!file.canRead()) {
        log.debug("cannot read blacklisting SPARQL file " + file.getName());
        return NOT_BLACKLISTED;
    }

    String queryString = null;
    FileInputStream fis = null;
    try {
        fis = new FileInputStream(file);
        byte b[] = new byte[fis.available()];
        fis.read(b);
        queryString = new String(b);
    } catch (IOException ioe) {
        log.debug(ioe);
        return NOT_BLACKLISTED;
    } finally {
        if (fis != null) {
            try {
                fis.close();
            } catch (IOException e) {
                log.warn("could not close file", e);
            }
        }
    }

    if (StringUtils.isEmpty(queryString)) {
        log.debug(file.getName() + " is empty");
        return NOT_BLACKLISTED;
    }

    OntModel model = ModelAccess.on(context).getOntModel();

    queryString = queryString.replaceAll("\\?individualURI", "<" + ind.getURI() + ">");
    log.debug(queryString);

    Query query = QueryFactory.create(queryString);
    QueryExecution qexec = QueryExecutionFactory.create(query, model);
    try {
        ResultSet results = qexec.execSelect();
        while (results.hasNext()) {
            QuerySolution solution = results.nextSolution();
            if (solution.contains("cause")) {
                RDFNode node = solution.get("cause");
                if (node.isResource()) {
                    return node.asResource().getURI();
                } else if (node.isLiteral()) {
                    return node.asLiteral().getString();
                }
            } else {
                log.error("Query solution must contain a variable " + "\"cause\" of type Resource or Literal.");
                return NOT_BLACKLISTED;
            }
        }
    } finally {
        qexec.close();
    }
    return NOT_BLACKLISTED;
}

---

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