将数据的长度写为8位无符号值，后跟实际数据。

import java.io.IOException;

import java.io.InputStream;/* 来 自 时 代 J     a    v  a - nowjava.com*/

import java.nio.ByteBuffer;

import java.util.Iterator;

import org.apache.log4j.Logger;


public class Main{

    /**

     * writes the length of data as an 8 bit unsigned value, followed by the

     * actual data. does not check that the length of the data-array actually

     * fits in the lengths field.

     * 

     * @param buf

     * @param data

     */

    final static public void writeArray8(