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[], int off, int len) throws IOException

Source Link

Document

Reads up to len bytes of data from the input stream into an array of bytes.

Usage

From source file:software.uncharted.util.HTTPUtil.java

public static String post(String urlToRead, String postData) {
    URL url;/*from ww w  .jav  a  2s  . com*/
    HttpURLConnection conn;
    try {
        url = new URL(urlToRead);
        conn = (HttpURLConnection) url.openConnection();

        conn.setRequestMethod("POST");
        conn.setDoOutput(true);
        conn.setRequestProperty("Content-Type", "application/json");

        DataOutputStream wr = new DataOutputStream(conn.getOutputStream());
        wr.writeBytes(postData);
        wr.flush();
        wr.close();

        ByteArrayOutputStream buffer = new ByteArrayOutputStream();
        int nRead;
        byte[] data = new byte[16384];
        InputStream is = conn.getInputStream();
        while ((nRead = is.read(data, 0, data.length)) != -1) {
            buffer.write(data, 0, nRead);
        }
        buffer.flush();
        return buffer.toString();
    } catch (Exception e) {
        e.printStackTrace();
        System.err.println("Failed to read URL: " + urlToRead + " <" + e.getMessage() + ">");
    }
    return null;
}

From source file:Main.java

public static int readSCSocketBytesFully(InputStream is, byte[] buffer, int len) throws Exception {
    int ret = 0, curRead = 0;

    while (true) {
        curRead = (len - ret);//  ww w .  ja va2  s  . co  m
        curRead = is.read(buffer, ret, curRead);
        ret += curRead;
        if (ret >= len) {
            break;
        }
        Thread.sleep(20);
    }
    return ret;
}

From source file:Main.java

public static int stmTryRead(InputStream in, byte[] bb, int off, int len) throws IOException {
    int r;//from  ww w  .  j  ava  2  s.co  m
    int l = 0;
    int t = off;
    while ((r = in.read(bb, t, len - l)) >= 0) {
        t += r;
        l += r;
        if (l == len) {
            break;
        }
    }
    return l;
}

From source file:Main.java

public static byte[] getBytesFromInputStream(InputStream in) throws Exception {
    ByteArrayOutputStream outStream = new ByteArrayOutputStream();
    byte[] data = new byte[4096];
    int count;//  ww  w .j a va 2s  .c  o m
    while ((count = in.read(data, 0, 4096)) != -1)
        outStream.write(data, 0, count);
    return outStream.toByteArray();
}

From source file:com.intel.cryptostream.utils.IOUtils.java

public static void readFully(InputStream in, byte buf[], int off, int len) throws IOException {
    int toRead = len;
    while (toRead > 0) {
        int ret = in.read(buf, off, toRead);
        if (ret < 0) {
            throw new IOException("Premature EOF from inputStream");
        }//from   w  w  w  .  j a  v  a 2  s  . com
        toRead -= ret;
        off += ret;
    }
}

From source file:Main.java

public static File getFileFromInputStream(File file, InputStream ins) throws IOException {
    OutputStream os = new FileOutputStream(file);
    int bytesRead = 0;
    byte[] buffer = new byte[8192];
    while ((bytesRead = ins.read(buffer, 0, 8192)) != -1) {
        os.write(buffer, 0, bytesRead);//from  w w  w . j  a v a2 s.  com
    }
    os.close();
    ins.close();
    return file;
}

From source file:Main.java

public static byte[] getByteArray(InputStream is) throws IOException {
    ByteArrayOutputStream buffer = new ByteArrayOutputStream();
    int nRead;// ww w . j  a v a 2  s. c  o m
    byte[] data = new byte[16384];

    while ((nRead = is.read(data, 0, data.length)) != -1) {
        buffer.write(data, 0, nRead);
    }
    buffer.flush();
    return buffer.toByteArray();
}

From source file:Main.java

private static byte[] getBytes(InputStream is) {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    byte[] b = new byte[2048];
    int len = 0;/*from   w w w .  j  a  va2s.  c  om*/
    try {
        while ((len = is.read(b, 0, 2048)) != -1) {
            baos.write(b, 0, len);
            baos.flush();
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
    byte[] bytes = baos.toByteArray();
    return bytes;
}

From source file:Main.java

public static void CopyStream(InputStream is, OutputStream os) {
    final int buffer_size = 1024;
    try {//from   ww  w . j  ava2  s  .co  m
        byte[] bytes = new byte[buffer_size];
        for (;;) {
            int count = is.read(bytes, 0, buffer_size);
            if (count == -1)
                break;
            os.write(bytes, 0, count);
        }
    } catch (Exception ex) {
    }
}

From source file:Main.java

public static void copyStream(InputStream is, OutputStream os) {
    final int buffer_size = 1024;
    try {/*from w  w  w . jav  a 2  s  .com*/
        byte[] bytes = new byte[buffer_size];
        for (;;) {
            int count = is.read(bytes, 0, buffer_size);
            if (count == -1)
                break;
            os.write(bytes, 0, count);
        }
    } catch (Exception ex) {
    }
}