MD5加密

public class MD5Utils {public static String md5(String string) {StringBuffer sb = new StringBuffer();try {MessageDigest instance = MessageDigest.getInstance("MD5");instance.update(string.getBytes());byte[] digest = instance.digest();for (byte b : digest) {int g = b & 0xff;String hexString = Integer.toHexString(g);if (hexString.length() < 2) {hexString = "0" + hexString;}sb.append(hexString);}} catch (NoSuchAlgorithmException e) {// TODO Auto-generated catch blocke.printStackTrace();}return sb.toString();}