import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class MD5Encoder {
	public static String encode(String pwd) {
		try {
			MessageDigest  digest = MessageDigest.getInstance("MD5");
			byte[]  bytes = digest.digest(pwd.getBytes());
			StringBuffer sb = new  StringBuffer();
			for(int i = 0;i<bytes.length;i++){
				String s = Integer.toHexString(0xff&bytes[i]);
				
				if(s.length()==1){
					sb.append("0"+s);
				}else{
					sb.append(s);
				}
			}
			
			return sb.toString();
		} catch (NoSuchAlgorithmException e) {
			e.printStackTrace();
			throw new RuntimeException("buhuifasheng");
		}
	}

}