I'm trying to create a user login system for an application. This login system works by allowing a user to register a profile and save it to a database. A login interface is then created in the logininterface class where the user inputs their username and password. This class should then call user service which access' a repository to locate the username and password in the database. The issue persists when trying to retrieve a user's details from the database, the repository used returns null. I think this is due to it not being initialised properly, however I cannot find the correct way to initialise the repository. Code snippets are included below:
Main class
@SpringBootApplication
public class Application implements ApplicationRunner {
@Autowired
UserRepo userRepo;
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
@Override
public void run(ApplicationArguments args) throws Exception {
System.setProperty("java.awt.headless", "false");
LoginInterface.createLogin();
}
}
User Repository
@Repository
public interface UserRepo extends JpaRepository<User, Long> {
Optional<User> findByuserName(String userName);
}
User Service
@Service
public class UserService implements UserDetailsService {
private final static String not_found = "user with username %s not found";
@Autowired
public UserRepo userRepo;
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
return userRepo.findByuserName(username).orElseThrow(() -> new UsernameNotFoundException(String.format(not_found, username)));
}
}
Login Interface
public class LoginInterface implements ActionListener {
private UserService userService = new UserService();
public static void createLogin(){
button.addActionListener((ActionListener) new LoginInterface());
}
@Override
public void actionPerformed(ActionEvent e) {
String user = username.getText();
String password = username.getText();
User theUser = (User) userService.loadUserByUsername(user);
String theUsername = theUser.getUsername();
String thePassword = theUser.getPassword();
if(user.equals(theUsername) && password.equals(thePassword)){
JOptionPane.showMessageDialog(null, "Login Successful");
}
else{
JOptionPane.showMessageDialog(null, "Username or Password mismatch");
}
}
}
