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package test;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.security.*;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
/**
* ¼ÓÃܽâÃÜ
*
* @author shy.qiu
* @since http://blog.csdn.net/qiushyfm
*/
public class CryptTest {
/**
* ½øÐÐMD5¼ÓÃÜ
*
* @param info
* Òª¼ÓÃܵÄÐÅÏ¢
* @return String ¼ÓÃܺóµÄ×Ö·û´®
*/
public String encryptToMD5(String info) {
byte[] digesta = null;
try {
// µÃµ½Ò»¸ömd5µÄÏûÏ¢ÕªÒª
MessageDigest alga = MessageDigest.getInstance("MD5");
// Ìí¼ÓÒª½øÐмÆËãÕªÒªµÄÐÅÏ¢
alga.update(info.getBytes());
// µÃµ½¸ÃÕªÒª
digesta = alga.digest();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
// ½«ÕªÒª×ªÎª×Ö·û´®
String rs = byte2hex(digesta);
return rs;
}
/**
*
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public static boolean validateEmail(String email){
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#cd /home
#cp jdk-1_5_0_02-linux-i586.rpm /usr/local
#cd /usr/local
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#chmod +x jdk-1_5_0_02-linux-i586.rpm.bin
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import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.SocketException;
public class Server
{
private DatagramSocket server;
private DatagramPacket packet;
......