Java生成MD5码

• 第一种 

    //盐，用于混交md5
	private static final String slat = "&%5123***&&%%$$#@";
	public static String encrypt(String dataStr) {
		try {
			dataStr = dataStr + slat;
			MessageDigest m = MessageDigest.getInstance("MD5");
			m.update(dataStr.getBytes("UTF8"));
			byte s[] = m.digest();
			String result = "";
			for (int i = 0; i < s.length; i++) {
				result += Integer.toHexString((0x000000FF & s[i]) | 0xFFFFFF00).substring(6);
			}
			return result;
		} catch (Exception e) {
			e.printStackTrace();
		}

		return "";
	}

•  第二种

    //盐，用于混交md5
	private static final String slat = "&%5123***&&%%$$#@";
	/**
	 * 生成md5
	 * @param seckillId
	 * @return
	 */
	public static String getMD5(String str) {
		String base = str +"/"+slat;
		String md5 = DigestUtils.md5DigestAsHex(base.getBytes());
		return md5;
	}