通过InputStream 转Byte数组

/**
 * 通过InputStream 转Byte数组
 *
 * @param inStream
 * @return
 * @throws IOException
 */
public static final byte[] inputToByte(InputStream inStream) throws IOException {

    ByteArrayOutputStream swapStream = new ByteArrayOutputStream();
    byte[] buff = new byte[PmsConstantsFinal.INPUTSTREAM_TO_BYTE];
    int rc = 0;
    while ((rc = inStream.read(buff, 0, PmsConstantsFinal.INPUTSTREAM_TO_BYTE)) > 0) {
        swapStream.write(buff, 0, rc);
    }
    byte[] in2b = swapStream.toByteArray();
    return in2b;
}