Spring Boot; passing user's First Name to welcome.jsp after logging in - spring

Question

A lot of the articles online for Spring Boot deals with Spring Security and it does not help me in the slightest. I am trying to implement a registration and login page and once the user successfully logins, it will take them to a welcome page where it should display their first name, something like "Welcome first name or Welcome username". I have tried passing the first name through a
model.addAttribute("firstName", accountInstance.getFirstName());
but that doesn't seem to work. Any hints to achieve this would be much appreciated
Login Controller
#Controller
public class LoginController {
#Autowired
private AccountRepository accountRepo;
#RequestMapping(value = "/login", method = RequestMethod.GET)
public String showLoginPage(ModelMap model) {
model.addAttribute("login", new AccountEntity());
return "login";
}
#RequestMapping(value = "/login", method = RequestMethod.POST)
public Object submitLoginIn(#ModelAttribute("login") AccountEntity accountForm, Model model) {
AccountEntity accountInstance = accountRepo.findByEmail(accountForm.getEmail().toLowerCase());
// Password Verifier using Argon2
Argon2PasswordEncoder argon2PasswordEncoder = new Argon2PasswordEncoder();
boolean passwordMatch = argon2PasswordEncoder.matches(accountForm.getPassword(), accountInstance.getPassword());
// issue where if i use caps email, throws null pointer exception
if (accountInstance == null || !passwordMatch) {
System.out.println("Invalid Email or Password");
// return ResponseEntity.status(HttpStatus.BAD_REQUEST).body(null);
return "login";
} else if (accountInstance.isEnabled() == false) {
System.out.println("Cant login cause not verified");
return "login";
} else {
System.out.println("account exist");
model.addAttribute("firstName", accountInstance.getFirstName());
return "redirect:welcome"; // Change later
}
}
}
Account Repository
public interface AccountRepository extends CrudRepository<AccountEntity, Long> {
// Optional<AccountEntity> findById(Long Id);
AccountEntity findByUserName(String userName);
AccountEntity findByPassword(String password);
AccountEntity findByEmail(String email);
AccountEntity findByVerificationCode(String verificationCode);
}
Account Entity
#Entity(name = "user")
public class AccountEntity {
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
private String firstName;
private String lastName;
private String userName;
private String email;
private String password;
// private String gender;
private Integer age;
private Date createdDate;
private boolean enabled;
#Column(updatable = false)
private String verificationCode;
// Getters and Setters
public void setId(Long id) {
this.id = id;
}
public Long getId() {
return id;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getFirstName() {
return firstName;
}
public String getLastName() {
return lastName;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
/*
* public String getGender() { return gender; }
*
* public void setGender(String gender) { this.gender = gender; }
*/
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public String getVerificationCode() {
return verificationCode;
}
public void setVerificationCode(String verificationCode) {
this.verificationCode = verificationCode;
}
public Date getCreatedDate() {
return createdDate;
}
public void setCreatedDate(Date createdDate) {
this.createdDate = createdDate;
}
public boolean isEnabled() {
return enabled;
}
public void setEnabled(boolean enabled) {
this.enabled = enabled;
}
}
Welcome.jsp
<p> Welcome, ${firstName.firstName} </p>
<!-- <p> Welcome, ${firstName} </p> -->

Answer 1

SO #Bollywood was correct with the redirecting:welcome. Doing so didn't pass the value I wanted to the jsp. Changing it to return "welcome" instead of return "redirect:welcome" worked!