Spring Boot internal server error (StackOverflowError) - spring-boot

Question

I have a problem while trying to log-in and authentitace my user. After sending POST request from Postman an internal server error(500) occure, then i get that error in my command line:
2022-11-26 11:23:32.930 ERROR 16316 --- [nio-8080-exec-3] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Handler dispatch failed; nested exception is java.lang.StackOverflowError] with root cause.
As i understand there's probably infinite loop in my code, but I unfortunaly don't know how to solve this.
Login endpoint that I'm trying to do:
`
#PostMapping("login")
public ResponseEntity<AuthResponseDTO> login(#RequestBody LoginDto loginDto){
Authentication authentication = authenticationManager.authenticate(
new UsernamePasswordAuthenticationToken(
loginDto.getUsername(),
loginDto.getPassword()));
SecurityContextHolder.getContext().setAuthentication(authentication);
String token = jwtGenerator.generateToken(authentication);
return new ResponseEntity<>(new AuthResponseDTO(token), HttpStatus.OK);
}
AuthResponseDTO:
#Data
public class AuthResponseDTO {
private String accessToken;
private String tokenType = "Bearer ";
public AuthResponseDTO(String accessToken) {
this.accessToken = accessToken;
}
}
SecurityConfig:
#Configuration
#EnableWebSecurity
#EnableMethodSecurity
public class SecurityConfig {
private JwtAuthEntryPoint authEntryPoint;
private CustomUserDetailsService userDetailsService;
#Autowired
public SecurityConfig(CustomUserDetailsService userDetailsService, JwtAuthEntryPoint authEntryPoint) {
this.userDetailsService = userDetailsService;
this.authEntryPoint = authEntryPoint;
}
#Bean
public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
http
.csrf().disable()
.exceptionHandling()
.authenticationEntryPoint(authEntryPoint)
.and()
.sessionManagement()
.sessionCreationPolicy(SessionCreationPolicy.STATELESS)
.and()
.authorizeRequests()
.antMatchers("/api/auth/**").permitAll()
.anyRequest().authenticated()
.and()
.httpBasic();
http.addFilterBefore(jwtAuthenticationFilter(), UsernamePasswordAuthenticationFilter.class);
return http.build();
}
#Bean
public AuthenticationManager authenticationManager(
AuthenticationConfiguration authenticationConfiguration) throws Exception {
return authenticationConfiguration.getAuthenticationManager();
}
#Bean
PasswordEncoder passwordEncoder() {
return new BCryptPasswordEncoder();
}
#Bean
public JWTAuthenticationFilter jwtAuthenticationFilter() {
return new JWTAuthenticationFilter();
}
}
`
JWTGenerator:
`
#Component
public class JWTGenerator {
public String generateToken(Authentication authentication) {
String username = authentication.getName();
Date currentDate = new Date();
Date expireDate = new Date(currentDate.getTime() + SecurityConstants.JWT_EXPIRATION);
String token = Jwts.builder()
.setSubject(username)
.setIssuedAt(new Date())
.setExpiration(expireDate)
.signWith(SignatureAlgorithm.HS512, SecurityConstants.JWT_SECRET)
.compact();
return token;
}
public String getUsernameFromJWT(String token) {
Claims claims = Jwts.parser()
.setSigningKey(SecurityConstants.JWT_SECRET)
.parseClaimsJws(token)
.getBody();
return claims.getSubject();
}
public boolean validateToken(String token) {
try {
Jwts.parser().setSigningKey(SecurityConstants.JWT_SECRET).parseClaimsJws(token);
return true;
} catch (Exception ex) {
throw new AuthenticationCredentialsNotFoundException("JWT was expired or incorrect");
}
}
}
`
As i said before, I don't know how to solve that problem. I expected to get data from AuthResponseDTO in order to get my JWT token.