Example usage for java.io InputStream read

Introduction

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

Prototype

public int read(byte b[]) throws IOException

Source Link

Document

Reads some number of bytes from the input stream and stores them into the buffer array b.

Usage

From source file:Main.java

/**
 * Loads a file into string//from w  ww  .  j av a2  s .  c om
 */
public static String readFile(String fileName, AssetManager assetManager) throws IOException {
    InputStream input;
    input = assetManager.open(fileName);
    int size = input.available();
    byte[] buffer = new byte[size];
    input.read(buffer);
    input.close();
    return new String(buffer);
}

From source file:co.edu.unal.arqdsoft.presentacion.JSON.java

/**
 * //from   www.  jav  a2s .  c o m
 * @param request
 * @return JSONObject con los parametros del request
 * @throws Exception 
 */
public static JSONObject toObject(HttpServletRequest request) throws Exception {
    if (request.getParameter("accion") != null) {//Servidor independiente
        JSONObject r = new JSONObject();
        r.put("accion", request.getParameter("accion"));
        r.put("datos", request.getParameter("datos"));
        return r;
    } else {//Servidor base netbeans
        InputStream is = request.getInputStream();
        byte[] charr = new byte[is.available()];
        is.read(charr);
        return (JSONObject) JSONValue.parse(new String(charr, "UTF-8"));
    }
}

From source file:Main.java

public static void copyFile(InputStream in, OutputStream out) throws IOException {
    byte[] buffer = new byte[1024];
    int read;/*from  w  w w .ja  v  a 2s .  com*/
    while ((read = in.read(buffer)) != -1) {
        out.write(buffer, 0, read);
    }
    out.flush();
}

From source file:Main.java

public static byte[] readInputStream(InputStream in) {
    byte[] buffer = null;
    try {//from   w w w  .  jav  a2  s  .c o  m
        int length = in.available();
        buffer = new byte[length];
        in.read(buffer);
    } catch (IOException e) {
        e.printStackTrace();
    }
    return buffer;
}

From source file:Main.java

private static long copyStream(InputStream input, OutputStream output) throws IOException {
    byte[] buffer = new byte[1024];
    long count = 0;
    int n = 0;// www . ja  va  2 s.  c o m
    while (-1 != (n = input.read(buffer))) {
        output.write(buffer, 0, n);
        count += n;
    }
    return count;
}

From source file:Main.java

public static String getContent(InputStream in) throws IOException {
    String retval = "";
    byte[] buf = new byte[512];
    while (true) {
        int n = in.read(buf);
        if (n <= 0)
            break;
        retval += new String(buf);
    }/*from w  w  w  .j a v a 2s.  com*/
    return retval;
}

From source file:Main.java

public static String readAssetTextFile(Context context, String inFile) {
    String tContents = "";

    try {//from   w w w .j  ava  2s  .c o  m
        InputStream stream = context.getAssets().open(inFile);

        int size = stream.available();
        byte[] buffer = new byte[size];
        stream.read(buffer);
        stream.close();
        tContents = new String(buffer);
    } catch (IOException e) {
        // Handle exceptions here
    }

    return tContents;

}

From source file:Main.java

/**
 * Reads at most <tt>maxBytes</tt> bytes from the supplied input stream and
 * returns them as a byte array./* w  w w.j av a2  s. c  om*/
 *
 * @param in The InputStream supplying the bytes.
 * @param maxBytes The maximum number of bytes to read from the input
 * stream.
 * @return A byte array of size <tt>maxBytes</tt> if the input stream can
 * produce that amount of bytes, or a smaller byte containing all available
 * bytes from the stream otherwise.
 */
public static final byte[] readBytes(InputStream in, int maxBytes) throws IOException {
    byte[] result = new byte[maxBytes];

    int bytesRead = in.read(result);
    int totalBytesRead = bytesRead;

    while (totalBytesRead < maxBytes && bytesRead >= 0) {
        // Read more bytes
        bytesRead = in.read(result, bytesRead, maxBytes - bytesRead);

        if (bytesRead > 0) {
            totalBytesRead += bytesRead;
        }
    }

    if (totalBytesRead < 0) {
        // InputStream at end-of-file
        result = new byte[0];
    } else if (totalBytesRead < maxBytes) {
        // Create smaller byte array
        byte[] tmp = new byte[totalBytesRead];
        System.arraycopy(result, 0, tmp, 0, totalBytesRead);
        result = tmp;
    }

    return result;
}

From source file:Main.java

public static byte[] readByteArray(InputStream stream, int length) {
    byte[] data = null;
    try {//from   w ww .  ja v  a2  s .c o m
        data = new byte[(int) 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:com.splout.db.common.CompressorUtil.java

public static void createZip(File dir, File out, IOFileFilter filefilter, IOFileFilter dirFilter)
        throws IOException {
    Collection<File> files = FileUtils.listFiles(dir, filefilter, dirFilter);

    out.delete();//from   w w  w .j  a  v  a2 s  .  c  o m
    ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(out));
    byte[] buf = new byte[1024];
    for (File f : files) {
        ZipEntry ze = new ZipEntry(getRelativePath(f, dir));
        zos.putNextEntry(ze);
        InputStream is = new FileInputStream(f);
        int cnt;
        while ((cnt = is.read(buf)) >= 0) {
            zos.write(buf, 0, cnt);
        }
        is.close();
        zos.flush();
        zos.closeEntry();
    }
    zos.close();
}