/**
     * Reads this input stream and returns contents as a byte[]
     * from:aspectjweaver.jar
     */
    public static byte[] readAsByteArray(InputStream inStream) throws IOException {
        int size = 1024;
        byte[] buff = new byte[size];
        int readSoFar = 0;
        while (true) {
            int nRead = inStream.read(buff, readSoFar, size - readSoFar);
            if (nRead == -1) {
                break;
            }
            readSoFar += nRead;
            if (readSoFar == size) {
                int newSize = size * 2;
                byte[] newBuff = new byte[newSize];
                System.arraycopy(buff, 0, newBuff, 0, size);
                buff = newBuff;
                size = newSize;
            }
        }
        byte[] newBuff = new byte[readSoFar];
        System.arraycopy(buff, 0, newBuff, 0, readSoFar);
        return newBuff;
    }

public static byte[] readStreamAsBytes(InputStream in) throws IOException {
    if (in == null) {
        return null;
    }
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    byte[] bys = new byte[4096];
    for (int p = -1; (p = in.read(bys)) != -1; ) {
        out.write(bys, 0, p);
    }
    return out.toByteArray();
}

------解决方案--------------------
good good .......

------解决方案--------------------
感谢分享哈

------解决方案--------------------
看看，学习

------解决方案--------------------
谢谢，虽然没看懂

------解决方案--------------------
好方法