Estou criando uma api java, e estou recebendo o seguinte erro:
java.lang.NullPointerException: Cannot invoke "school.pachecos.api.users.UserRepository.findByEmail(String)" because "this.user_repository" is null
Esse é o código
Security Filter
@Component
public class SecurityFilter extends OncePerRequestFilter {
@Autowired
TokenService token_service = new TokenService();
@Autowired
private UserRepository user_repository;
@Override
protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filter_chain) throws ServletException, IOException {
String token = getToken(request);
if(token != null){
String token_subject = token_service.getTokenSubject(token);
UserDetails user_entity = user_repository.findByEmail(token_subject);
Authentication authentication = new UsernamePasswordAuthenticationToken(user_entity, null, user_entity.getAuthorities());
SecurityContextHolder.getContext().setAuthentication(authentication);
}
filter_chain.doFilter(request, response);
}
private String getToken(HttpServletRequest request){
String token = request.getHeader("Authorization");
if(token == null){
return null;
}
return token.replace("Bearer", "");
}
}
Security Config
@Configuration
@EnableWebSecurity
public class SecurityConfigurations {
@Bean
public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
return http
.csrf(csrf -> csrf.disable())
.authorizeHttpRequests(http_request -> http_request
.requestMatchers("/auth/login").permitAll()
.anyRequest().authenticated()
)
.sessionManagement(sm -> sm.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
.addFilterBefore(new SecurityFilter(), UsernamePasswordAuthenticationFilter.class)
.build();
}
@Bean
public AuthenticationManager authenticationManager(AuthenticationConfiguration auth_config) throws Exception {
return auth_config.getAuthenticationManager();
}
@Bean
public PasswordEncoder passwordEncoder(){
return new BCryptPasswordEncoder();
}
}
Token Config
@Service
public class TokenService {
private final String secret = "b0eMdsHE5jKDW9RsjuC5VrF8BT7P2oHubObbdBvaVbfzlXgKftxQ2WrZfX4RtU04";
private final String ISSUER = "API Pacheco's School";
public String createToken(UserEntity user){
try {
Algorithm algorithm = Algorithm.HMAC256(secret);
return JWT.create()
.withIssuer(ISSUER)
.withExpiresAt(getExpiresAt())
.withSubject(user.getUsername())
.sign(algorithm);
} catch (JWTCreationException exception){
return null;
}
}
private Instant getExpiresAt(){
return LocalDateTime.now().plusDays(1).toInstant(ZoneOffset.of("-03:00"));
}
public String getTokenSubject(String token){
try {
Algorithm algorithm = Algorithm.HMAC256(secret);
return JWT.require(algorithm)
.withIssuer(ISSUER)
.build()
.verify(token)
.getSubject();
} catch (JWTVerificationException exception){
return null;
}
}
}
User Repository
public interface UserRepository extends JpaRepository<UserEntity, Long> {
@Query(value = "SELECT u FROM UserEntity u WHERE " +
"u.name LIKE CONCAT('%', :name, '%') " +
"OR u.birth_date = :date " +
"OR u.email LIKE CONCAT('%', :email, '%') " +
"OR cellphone LIKE CONCAT('%', :cellphone, '%') "
)
Collection<UserEntity> searchUsers(String name, LocalDate date, String email, String cellphone);
UserDetails findByEmail(String email);
}
Tive o mesmo erro com o Token Service no Security Filter, mas como era uma classe, pude instancia-la e cria-la. Só que no UserRepository , como se trata de uma interface, não posso fazer isso. Alguma ideia?
