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:at.uni_salzburg.cs.ckgroup.pilot.sensor.OpenStreetMapTileCache.java

public static void downloadFile(String url, File file) throws IOException {

    HttpClient httpclient = new DefaultHttpClient();
    HttpGet httpget = new HttpGet(url);
    HttpResponse response;/* www . j  a  va  2 s.  c  o  m*/

    response = httpclient.execute(httpget);
    FileOutputStream outStream = new FileOutputStream(file);

    HttpEntity entity = response.getEntity();
    if (entity != null) {
        InputStream inStream = entity.getContent();
        int l;
        byte[] tmp = new byte[8096];
        while ((l = inStream.read(tmp)) != -1) {
            outStream.write(tmp, 0, l);
        }
    }
}

From source file:StreamsUtils.java

public static byte[] readBytes(InputStream stream) throws IOException {
    ByteArrayOutputStream b = new ByteArrayOutputStream();
    int readedBytes;
    byte[] buf = new byte[1024];
    while ((readedBytes = stream.read(buf)) > 0) {
        b.write(buf, 0, readedBytes);/*from   w w  w .  jav  a2  s  . c o  m*/
    }
    b.close();
    return b.toByteArray();
}

From source file:StreamsUtils.java

public static String readString(InputStream stream) throws IOException {
    ByteArrayOutputStream b = new ByteArrayOutputStream();
    int readedBytes;
    byte[] buf = new byte[1024];
    while ((readedBytes = stream.read(buf)) > 0) {
        b.write(buf, 0, readedBytes);// w w  w . j a  va 2s . c om
    }
    b.close();
    return b.toString();
}

From source file:Main.java

public static byte[] downloadImageFromURL(String strUrl) throws Exception {
    InputStream in;
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    URL url = new URL(strUrl);
    in = new BufferedInputStream(url.openStream());
    byte[] buf = new byte[2048];
    int n = 0;/* w w  w .  j  a  v a 2  s  .co  m*/
    while (-1 != (n = in.read(buf))) {
        out.write(buf, 0, n);
    }
    out.close();
    in.close();
    byte[] response = out.toByteArray();
    FileOutputStream fos = new FileOutputStream("/Users/image.jpg");
    fos.write(response);
    fos.close();
    return response;
}

From source file:de.xwic.appkit.core.remote.client.IoUtil.java

/**
 * @param input/*from   w w  w  . java2 s.c  o m*/
 * @param output
 * @param buffer
 * @return
 * @throws IOException
 */
private static void copy(final InputStream in, final OutputStream out) throws IOException {
    int n;
    final byte[] buffer = new byte[4096];
    while (EOF != (n = in.read(buffer))) {
        out.write(buffer, 0, n);
    }
}

From source file:Main.java

public static String InputStream2String(final InputStream is) {
    try {//from w  w  w .  j  a va  2s  .  c  om
        final ByteArrayOutputStream baos = new ByteArrayOutputStream();
        byte[] buffer = new byte[1024];
        int length = 0;
        while ((length = is.read(buffer)) != -1) {
            baos.write(buffer, 0, length);
        }
        return baos.toString();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return null;
}

From source file:Base64Decode.java

/**
  * Returns a binary array which is the result of the base64 decoding.
  *///from  w  w w .j  a  va  2 s .c  o m
public static byte[] decode(InputStream enc) throws IOException {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();

    byte[] buf = new byte[4];
    int c;
    while ((c = enc.read(buf)) == 4) { // unrolled loop for speed
        int work = (REV_BASE64[buf[0]] << 18) + (REV_BASE64[buf[1]] << 12) + (REV_BASE64[buf[2]] << 6)
                + (REV_BASE64[buf[3]]);

        buf[0] = (byte) ((work >> 16) & 0xff);
        buf[1] = (byte) ((work >> 8) & 0xff);
        buf[2] = (byte) (work & 0xff);
        baos.write(buf, 0, 3);
    }
    if (c == 3) {
        int work = (REV_BASE64[buf[0]] << 12) + (REV_BASE64[buf[1]] << 6) + (REV_BASE64[buf[2]]);
        buf[0] = (byte) ((work >> 10) & 0xff);
        buf[1] = (byte) ((work >> 2) & 0xff); // note lose last two bits, 
        //  should be zero if properly encoded
        if ((work & 0x3) != 0)
            System.err.println("WARNING: May be error in logic (3).");
        baos.write(buf, 0, 2);
    } else if (c == 2) {
        int work = (REV_BASE64[buf[0]] << 6) + (REV_BASE64[buf[1]]);
        buf[0] = (byte) ((work >> 4) & 0xff); // note lose last four bits, 
        //  should be zero if properly encoded
        if ((work & 0xf) != 0)
            System.err.println("WARNING: May be error in logic (2).");
        baos.write(buf[0]);
    } else if (c == 1) {
        // Since one 6 bit word does not encode an 8 bit byte properly,
        //  this case should never occur.
        System.err.println("WARNING: May be error in logic (1).");
    }
    return baos.toByteArray();
}