<@&1004656351647117403> please have a look, thanks.
#Spring Security principal user returning null after login.
proud mantleBOT
proud mantleBOT
<@&1004656351647117403> please have a look, thanks.
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null value. This can happen due to several reasons. Here are some possible causes and solutions:
-
Incorrect configuration: Check your Spring Security configuration to ensure that it is properly set up. Make sure you have defined the appropriate authentication provider and user details service.
-
Custom UserDetailsService: If you are using a custom UserDetailsService implementation, make sure it is correctly implemented and returning the user details object with the correct authorities.
-
Authentication success handler: If you have defined a custom authentication success handler, make sure it is properly configured to set the principal in the security context.
-
Session management: Check if your session management configuration is causing any issues. For example, if you have enabled session fixation protection, it may be creating a new session after login, resulting in a null principal.
-
Remember me functionality: If you have enabled remember me functionality, ensure that it is working correctly and not interfering with the authentication process.
-
Debugging: Enable debug logging for Spring Security to get more information about the authentication process and any potential errors or warnings.
-
Testing with different users: Try logging in with different users to see if the issue persists or if it is specific to a particular user account.
If none of these solutions work, please provide more details about your Spring Security configuration and any relevant code snippets for further assistance.
tough blade
controller method-
@PostMapping("/login")
public void login(@RequestBody VisitorDTO visitorDTO) {
authenticationManager.authenticate(new UsernamePasswordAuthenticationToken(visitorDTO.getUsername(), visitorDTO.getPassword()));
}
loadbyusername method:
@Override
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
Visitor visitor = visitorRepository.findByUsername(username);
if (visitor == null){
throw new UsernameNotFoundException("user not found");
}else {
return new PrincipalUser(visitor);
}
}
security config-
@Configuration
@EnableWebSecurity
public class SecurityConfig{
private VisitorService visitorService;
public SecurityConfig(VisitorService visitorService) {
this.visitorService = visitorService;
}
@covert nacelle
public AuthenticationManager authenticationManager(HttpSecurity http) throws Exception{
return http.getSharedObject(AuthenticationManagerBuilder.class)
.userDetailsService(visitorService)
.passwordEncoder(passwordEncoder())
.and().build();
}
@covert nacelle
public SecurityFilterChain filterChain(HttpSecurity http) throws Exception{
http.cors().and().csrf().disable().exceptionHandling().authenticationEntryPoint(
(request, response, authException) -> response.sendError(
HttpServletResponse.SC_UNAUTHORIZED,
authException.getMessage())
).and().authorizeRequests()
.requestMatchers("/login","/add","/visitors").permitAll()
.anyRequest().authenticated();
return http.build();
}
@covert nacelle
PasswordEncoder passwordEncoder(){
return new BCryptPasswordEncoder();
}
@covert nacelle
public WebMvcConfigurer corsConfigurer() {
return new WebMvcConfigurer() {
@Override
public void addCorsMappings(CorsRegistry registry) {
registry.addMapping("/**")
.allowedMethods("*");
}
};
}
}
eternal pollen
