给字符开展MD5加密

给字符进行MD5加密

给一个字符串进行MD5加密

public class MD5 {/** * 获取与密码对应的条码 * @param str * @return */public static String getMD5Str(String str) {MessageDigest messageDigest = null;try {messageDigest = MessageDigest.getInstance("MD5");messageDigest.reset();messageDigest.update(str.getBytes("UTF-8"));} catch (NoSuchAlgorithmException e) {System.out.println("NoSuchAlgorithmException caught!");System.exit(-1);} catch (UnsupportedEncodingException e) {e.printStackTrace();}byte[] byteArray = messageDigest.digest();StringBuffer md5StrBuff = new StringBuffer();for (int i = 0; i < byteArray.length; i++) {if (Integer.toHexString(0xFF & byteArray[i]).length() == 1)md5StrBuff.append("0").append(Integer.toHexString(0xFF & byteArray[i]));elsemd5StrBuff.append(Integer.toHexString(0xFF & byteArray[i]));}return md5StrBuff.toString();}public static void main(String[] args) {System.out.println(MD5.getMD5Str("123"));}}

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