I’m getting this error when I’m trying to save ChatUser object from /showSignUpForm request . The object details are stored successfully in the DB but it gives “jakarta.persistence.TransactionRequiredException: no transaction is in progress” error on on /processSignUpForm

This is my controller class

`@Controller
public class ChatUserController {

@Autowired
private ChatUserService chatUserService;

@GetMapping("/showLoginForm")
public String showLoginForm(Model theModel){
    return "login-form";
}

@GetMapping("/showSignUpForm")
public String showSignUpForm(Model theModel) {
    theModel.addAttribute("chatUser", new ChatUser());
    return "sign-up-form";
}

@PostMapping("/processSignUpForm")
@Transactional
public String processSignUpForm(@ModelAttribute("chatUser") ChatUser chatUser) {
    
    System.out.println(chatUser.toString());
    chatUserService.saveChatUser(chatUser);
    return "chat-page";
}

}`

This my DAO interface
`public interface ChatUserDAO {

public List<ChatUser> getchatUsers();

public void saveChatUser(ChatUser theChatUser);

public ChatUser getChatUser(int theId);

public void deleteChatUser(int theId);

}
`

DAO Implementation:

`@Repository
public class ChatUserDaoImpl implements ChatUserDAO{

@Autowired
private SessionFactory sessionFactory;

@Override
public List<ChatUser> getchatUsers() {
    Session currentSession = sessionFactory.getCurrentSession();
    Query<ChatUser> theQuery = currentSession.createQuery("from ChatUser", ChatUser.class);
    List<ChatUser> chatUsers = theQuery.getResultList();
    return chatUsers;
}

@SuppressWarnings("deprecation")
@Override
public void saveChatUser(ChatUser theChatUser) {
    Session currentSession = sessionFactory.getCurrentSession();
    currentSession.saveOrUpdate(theChatUser);   
}

}
`

This is my ChatUser Entity
`@Entity
@Table(name=”chat_user”)
public class ChatUser {

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "user_id")
private int user_id;

@Column(name="user_name")
private String user_name;

@Column(name="user_email")
private String user_email;

@Column(name="user_password")
private String user_password;


@ManyToMany(fetch=FetchType.LAZY, cascade = {CascadeType.PERSIST,CascadeType.MERGE,CascadeType.DETACH,CascadeType.REFRESH })
@JoinTable(
        name="group_user",
        joinColumns=@JoinColumn(name="user_id"),
        inverseJoinColumns=@JoinColumn(name="group_id")
        )
private List<ChatGroup> chatGroups;

public ChatUser() {
    
}

public ChatUser(String user_name, String user_email, String user_password) {
    this.user_name = user_name;
    this.user_email = user_email;
    this.user_password = user_password;
}

}`

This is my Service Class Implementation

`@Service
public class ChatUserServiceImpl implements ChatUserService{

@Autowired
private ChatUserDAO chatUserDao;

@Override
@Transactional
public List<ChatUser> getChatUsers() {
    return chatUserDao.getchatUsers();
}

@Override
@Transactional
public void saveChatUser(ChatUser theChatUser) {
    chatUserDao.saveChatUser(theChatUser);
}

@Override
@Transactional
public ChatUser getChatUser(int theId) {
    return chatUserDao.getChatUser(theId);
}

@Override
@Transactional
public void deleteChatUser(int theId) {
    chatUserDao.deleteChatUser(theId);
}

}`

Please help. Thankyou.

though the object is getting saved, but error still persists.