@Controller
//@WebServlet(urlPatterns={"/logIn"})
public class LoginController {
    @Autowired UserInfoRepo userRepo;

//  @RequestMapping(value="error-login", method=RequestMethod.GET)
//  public String invalidLogin(Model model) {
//      model.addAttribute("error", true);
//      return "login";
//  }



//  @RequestMapping(value="logIn", method=RequestMethod.POST)
//  public String login(@Valid HttpServletRequest request, @ModelAttribute("userInfo") BindingResult result, Model model) throws ServletException{
//
//
//      boolean s=false;
////        for(UserInfo u : userRepo.findByUsername(username)){
////
////            if ((u.getUsername().equals(request.getParameter("newUsername"))) && (u.getPassword().equals(request.getParameter("newPassword")))){
////            s= true;
////            }
////
////        }
//      if (!(((userRepo.findByUsername(request.getParameter("newUsername")))).equals(null))) {
//          s= true;
//          }
//
//      if(s=true){
//          System.out.print("logged In");
//      return "loggedIn";
//      }
//
//      else    {
//      System.out.print("Invalid Login");
//      return "login";}
////    if (!(userRepo.findByUsername(request.getParameter("newUsername"))).equals(null)){
////
//  }

@RequestMapping(value="logIn", method=RequestMethod.POST)
        public ModelAndView login(ModelAndView view, @ModelAttribute("userInfo") UserInfo userInfo, HttpServletRequest request,HttpSession  session){
            Object user= request.getSession().getAttribute("userInfo");
            if (user!=null){
                System.out.print("aVAILABLE uSERS");

        return new ModelAndView("redirect:login");

    }
        UserInfo userUsername = userRepo.findByUsername(userInfo.getUsername());

        if (userUsername==null || !(userUsername.getPassword().equals(userInfo.getPassword()))){
            System.out.println("not Logged In");
            view.setViewName("login");
            view.addObject("error", "Wrong Username or Password");
            return view;
        }
        else{
        System.out.print("Succesfull Login");
        request.getSession().setAttribute("user", userUsername);
        view.setViewName("loggedIn");
        }
        return view;
    }
    }

...
    <div class="row blockDisplay">
    <div class="column_half left_half">
      <h2 class="column_title">LOGIN</h2>
        <div class="loginForm">
     <form action="/logIn" object="${userInfo}" class="loginFormText" method="post"  >
  Username: <br>
  <input id="newUsername" class="submissionfield" type="text" name="newUsername"><br>
  Password: <br>
  <input id="newPassword" type="text" name="newPassword"><br>
         <input    type="submit" value="Submit"> <br>
         <a href="/createaccount/">No account? Sign-up</a>
</form>

    </div>
    </div>
...

@Entity
@Table(name="userInfoTable")
public class UserInfo {

    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    int id;

    @Column(name="username", nullable=false)
     String username;
    @Column(name="password", unique=true, nullable=false)
    String password;
    @Transient
    String firstname;
    @Transient
    String lastname;

    public String getPassword(){
        return password;
    }

    public void setPassword(String p){
        this.password =  p;
    }

    public String getUsername(){
        return username;
    }

    public void setUsername(String u){
        this.username = u;
    }

    public String getFirstname(){
        return firstname;
    }

    public void setFirstname(String f){
        this.firstname = f;
    }

    public String getLastname(){
        return lastname;
    }

    public void setLastname(String l){
        this.lastname = l;
    }


    public int getId(){
        return id;
    }

    public void setId(int i){
        this.id = i;
    }

    @Override
    public String toString() {
        return "UserInfo [username=" + username + ", password=" + password + ", firstname="
                + firstname + ", lastname=" + lastname + "]";
    }

}