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

public static byte[] readStream(InputStream is) throws Exception {
    byte[] bytes = new byte[1024];
    int leng;//  www  . java2 s  .co  m
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    while ((leng = is.read(bytes)) != -1) {
        baos.write(bytes, 0, leng);
    }
    return baos.toByteArray();
}

From source file:StreamsUtils.java

public static void inputStream2OutputStream(InputStream stream, OutputStream out) throws IOException {
    int readedBytes;
    byte[] buf = new byte[1024];
    while ((readedBytes = stream.read(buf)) > 0) {
        out.write(buf, 0, readedBytes);//from   ww  w. j ava2 s. c  om
    }
    stream.close();
    out.close();
}

From source file:com.eryansky.common.utils.encode.MD5Util.java

/**
 * ?MD5//from  w ww .  j  av a  2  s.  c  o  m
 * @param file
 * @return
 * @throws IOException
 * @date   2012-1-9?3:15:43
 */
public static String getFileMD5String(File file) throws IOException {
    InputStream fis;
    fis = new FileInputStream(file);
    byte[] buffer = new byte[1024];
    int numRead = 0;
    while ((numRead = fis.read(buffer)) > 0) {
        messagedigest.update(buffer, 0, numRead);
    }
    fis.close();
    return bufferToHex(messagedigest.digest());
}

From source file:Main.java

public static String loadJSONFromAsset(Context context, String filename) {
    String json = null;/* w w  w . j  a  va  2 s.co  m*/
    try {

        InputStream is = context.getAssets().open(filename);

        int size = is.available();

        byte[] buffer = new byte[size];

        is.read(buffer);

        is.close();

        json = new String(buffer, "UTF-8");

    } catch (IOException ex) {
        ex.printStackTrace();
        return null;
    }
    return json;

}

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

public static byte[] readByte(InputStream is) {
    try {/*  ww w. j a v  a 2s  .c  o m*/
        byte r[] = new byte[is.available()];
        is.read(r);
        return r;
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }
}

From source file:Main.java

public static void writeInputStreamToOutputStream(InputStream in, OutputStream out, long maxLength)
        throws IOException {
    byte[] buf = new byte[4096];
    int bytesRead;

    while ((bytesRead = in.read(buf)) != -1) {
        maxLength -= bytesRead;//from   w w  w  .jav a 2 s .c o m
        if (maxLength <= 0) {
            throw new IOException("Stream exceeded max size");
        }
        out.write(buf, 0, bytesRead);
    }
}

From source file:Main.java

public static void createFileFormInputStream(InputStream is, String path) {
    try {//from   ww w. j  a va  2s  .  co m
        FileOutputStream fos = new FileOutputStream(path);
        byte[] buf = new byte[1376];
        while (is.read(buf) > 0) {
            fos.write(buf, 0, buf.length);
        }
        is.close();
        fos.flush();
        fos.close();
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

From source file:Main.java

public static String readFromStream(InputStream in) throws IOException {
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    int len = 0;// w  ww .  j a  va 2s .c  om
    byte[] buf = new byte[1024];
    if ((len = in.read(buf)) != -1) {
        out.write(buf, 0, len);
    }
    String result = out.toString();
    in.close();
    out.close();
    return result;
}

From source file:Main.java

/**
 * Copies inputStream to outputStream in a somewhat buffered way
 * @param in Input stream//from  w  w w .ja  v a 2 s  .  c om
 * @param out Output stream
 * @throws IOException if the operation fails
 */
public static void copyStream(InputStream in, OutputStream out)
        throws IOException {
    byte[] buffer = new byte[BUFFER_SIZE];
    int read;
    while ((read = in.read(buffer)) != -1) {
        out.write(buffer, 0, read);
    }
}

From source file:Main.java

public static void copy(InputStream is, OutputStream os) throws IOException {
    byte[] buffer = new byte[1024];
    int len;//  www  .ja  v  a  2 s . com
    while ((len = is.read(buffer)) != -1) {
        os.write(buffer, 0, len);
    }
}