MD5及加盐处理

//1.设置加盐常量

例：public static final String USER_SLAT = "b2cstore";

//2.获取密码进行MD5加密，并加盐处理
String password = employee.getPassword();
password = DigestUtils.md5DigestAsHex(password.getBytes());
password += DigestUtils.md5DigestAsHex(UserConstan.USER_SLAT.getBytes());
employee.setPassword(password);