@Override
  public void doPost(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    response.setContentType("text/html");
    HttpSession session = request.getSession();

    String name = request.getParameter("name");
    String ID = request.getParameter("ID");
    String email = request.getParameter("email");
    String password = request.getParameter("password");
    String position = request.getParameter("position");

    try {
      MD5Util.addNewStaff(name, Integer.parseInt(ID), email, password, position);
      session.setAttribute("AddStaff", "Yes");
    } catch (Exception e) {
      session.setAttribute("AddStaff", "No");
    }

    response.sendRedirect("/library/people.jsp");
  }
  /**
   * Handles HTTP POST requests.
   *
   * @param request Description of the Parameter
   * @param response Description of the Parameter
   * @exception ServletException if there is a Servlet failure
   * @exception IOException if there is an IO failure
   */
  public void doPost(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {

    response.setContentType("text/html");
    HttpSession session = request.getSession();

    System.out.println(
        "In Project4AddServlet...get form parms of Employee, set into INSERT sql, return to add.");
    String url = null;

    String firstName = request.getParameter("firstName");
    String lastName = request.getParameter("lastName");
    String ssn = request.getParameter("ssn");
    String department = request.getParameter("department");
    String roomNumber = request.getParameter("roomNumber");
    String phoneNumber = request.getParameter("phoneNumber");

    // These session properties will persist between validations, in the JSP, input tag, text
    // value="${EL item}".
    session.setAttribute("firstName", firstName);
    session.setAttribute("lastName", lastName);
    session.setAttribute("ssn", ssn);
    session.setAttribute("department", department);
    session.setAttribute("roomNumber", roomNumber);
    session.setAttribute("phoneNumber", phoneNumber);

    EmployeeDirectory employeeDirectory =
        (EmployeeDirectory) getServletContext().getAttribute("employeeDirectory");

    // associate the Message with the request, and clear it before forwarding to JSP page
    String AddMessage = "";
    boolean firstNameErr = false;
    boolean lastNameErr = false;
    boolean ssnErr = false;
    boolean departmentErr = false;
    boolean roomNumberErr = false;
    boolean phoneNumberErr = false;

    // Validate that all fields have valid data, prior to employeeDirectory.Add()

    if (firstName == null || firstName.equals("")) {
      AddMessage = "Please enter missing First Name.";
      firstNameErr = true;
    } else if (lastName == null || lastName.equals("")) {
      AddMessage = "Please enter missing Last Name.";
      lastNameErr = true;
    } else if (ssn == null || ssn.equals("")) {
      AddMessage = "Please enter missing SSN.";
      ssnErr = true;
    } else if (department == null || department.equals("")) {
      AddMessage = "Please enter missing Department.";
      departmentErr = true;
    } else if (roomNumber == null || roomNumber.equals("")) {
      AddMessage = "Please enter missing Room Number.";
      roomNumberErr = true;
    } else if (phoneNumber == null || phoneNumber.equals("")) {
      AddMessage = "Please enter missing Phone Number.";
      phoneNumberErr = true;
    } else {
      employeeDirectory.addNewEmployee(
          firstName, lastName, ssn, department, roomNumber, phoneNumber);
      AddMessage = "Employee added.";
    }

    session.setAttribute("project4AddMessage", AddMessage);
    session.setAttribute("project4firstNameErr", firstNameErr);
    session.setAttribute("project4lastNameErr", lastNameErr);
    session.setAttribute("project4ssnErr", ssnErr);
    session.setAttribute("project4departmentErr", departmentErr);
    session.setAttribute("project4roomNumberErr", roomNumberErr);
    session.setAttribute("project4phoneNumberErr", phoneNumberErr);

    url = "/java112/Project4EmployeeAdd.jsp"; // do a redirect using url back to
    // Project4EmployeeAdd.jsp page.
    response.sendRedirect(url);
  }