Mr.S的blog

public class ByteUtil {        public static byte[] join(byte[] src,byte[] des){        byte[] result = new byte[src.length + des.length];        System.arraycopy(src, 0, result, 0, src.length);      

import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream; public class FileUtils { 

import java.io.BufferedReader;import java.io.InputStreamReader;import org.apache.struts2.ServletActionContext;public class Iputil {    public static String getIp(){        String ip = ServletActionCon

import java.security.MessageDigest;import java.security.NoSuchAlgorithmException;import java.util.Hashtable;import javax.naming.Context;import javax.naming.NamingEnumeration;import javax.naming.Naming

import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.Date; public class TimeUtil {    //private static Calendar  calCurrent;    //private static