通用简单的MD5程序
import java.security.MessageDigest; /** * FileName:MD5.CLASS * Author:Gboshi * Create File Time:2006-07 * */public class Md5 { /*** String Array?* @pram MyMiss* */ private final static String[] MyMiss = { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f"}; public static String byteArrayToHexString(byte[] b) { StringBuffer sb = new StringBuffer(); for (int i = 0; i < b.length; i++) { sb.append(byteToHexString(b[i])); } return sb.toString(); } private static String byteToHexString(byte b) { int n = b; if (n < 0) n = 256 + n; int d1 = n / 16; int d2 = n % 16; return MyMiss[d1] + MyMiss[d2]; } public static String md5(String origin) { String rs = null; try { rs=new String(origin); MessageDigest md = MessageDigest.getInstance("MD5"); rs=byteArrayToHexString(md.digest(rs.getBytes())); } catch (Exception ex) { ex.printStackTrace(); } return rs; } //Test public static void main(String agrs[]){ System.out.println(md5("admin")); System.out.println(md5("ADMIN")); }}