Pfthb

I trying to authenticate and authorize by Spring Security. I am able to authenticate and authorize when I use Postman pulgin. But when I integrate the application with Frontend (i.e angular) the SecurityContextHolder.getContext().getAuthentication() returns null.

Any help would be great appreciated. I have been trying to do this since past 3-4 weeks. As there are many classes for this configuration, I am not putting all code here. Please let me know what code (apart from below code) you need, so I can get a help from you. Fyi: initially when I was calling /authenticateAndGenerateToken and then call /student, it was not getting the authentication. So I added code to put the authentication in the controller(as shown below). I am using auth0/angular-jwt

Thanks in advance!!

JwtAuthenticationFilter.java

public class JwtAuthenticationFilter extends OncePerRequestFilter 

 @Autowired
 private JwtTokenProvider tokenProvider;

 private static final Logger logger = LoggerFactory.getLogger(JwtAuthenticationFilter.class);

 @Override
 protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException 
 String jwt = getJwtFromRequest(request);
 String url = getFullURL(request);
 System.out.println("URL:..............." + url);
 if(jwt == null && !url.contains("api/security/authentication/authenticateAndGenerateToken")) 
 jwt = "No Token Provided";
 
 if (StringUtils.hasText(jwt)) 
 if(tokenProvider.validateToken(jwt)) 
 UserDetails userDetails = (UserDetails) SecurityContextHolder.getContext().getAuthentication().getPrincipal();
 UsernamePasswordAuthenticationToken authentication = new UsernamePasswordAuthenticationToken(userDetails, null, userDetails.getAuthorities());
 authentication.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));

 SecurityContextHolder.getContext().setAuthentication(authentication);
 else 
 response.sendError(HttpServletResponse.SC_BAD_REQUEST, "Required headers not specified in the request");
 System.out.println("Token Validation Failed.....");
 
 
 filterChain.doFilter(request, response);
 

 private String getJwtFromRequest(HttpServletRequest request) 
 String bearerToken = request.getHeader("Authorization");
 if (StringUtils.hasText(bearerToken) && bearerToken.startsWith("Bearer ")) 
 return bearerToken.substring(7, bearerToken.length());
 
 return null;
 

 public String getFullURL(HttpServletRequest request) 
 StringBuilder requestURL = new StringBuilder(request.getRequestURL().toString());
 String queryString = request.getQueryString();

 if (queryString == null) 
 return requestURL.toString();
 else 
 return requestURL.append('?').append(queryString).toString();
 
 

AuthenticationController.java

 @RestController
 @RequestMapping("/api/auth")
 @CrossOrigin
 public class AuthController 
 @SuppressWarnings( "unchecked", "rawtypes" )
 @PostMapping("/authenticateAndGenerateToken")
 public ResponseEntity<?> authenticateUser(@RequestBody LoginRequest loginRequest) 
 if(loginRequest.getUsername().isEmpty()