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Introducing tokens

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Pragya Keshap answered on February 7, 2023 Popularity 1/10 Helpfulness 1/10

answer Introducing tokens

Introducing tokens

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Spring Boot Application that supports Token based Authentication with JWT. You’ll know:

Appropriate Flow for User Signup & User Login with JWT Authentication

Spring Boot Application Architecture with Spring Security

How to configure Spring Security to work with JWT

How to define Data Models and association for Authentication and Authorization

Way to use Spring Data JPA to interact with PostgreSQL/MySQL Database

public class AuthTokenFilter extends OncePerRequestFilter {
	@Autowired
	private JwtUtils jwtUtils;

	@Autowired
	private UserDetailsServiceImpl userDetailsService;

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

	@Override
	protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
			throws ServletException, IOException {
		try {
			String jwt = parseJwt(request);
			if (jwt != null && jwtUtils.validateJwtToken(jwt)) {
				String username = jwtUtils.getUserNameFromJwtToken(jwt);

				UserDetails userDetails = userDetailsService.loadUserByUsername(username);
				UsernamePasswordAuthenticationToken authentication = new UsernamePasswordAuthenticationToken(
						userDetails, null, userDetails.getAuthorities());
				authentication.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));

				SecurityContextHolder.getContext().setAuthentication(authentication);
			}
		} catch (Exception e) {
			logger.error("Cannot set user authentication: {}", e);
		}

		filterChain.doFilter(request, response);
	}

	private String parseJwt(HttpServletRequest request) {
		String headerAuth = request.getHeader("Authorization");

		if (StringUtils.hasText(headerAuth) && headerAuth.startsWith("Bearer ")) {
			return headerAuth.substring(7, headerAuth.length());
		}

		return null;
	}
}

https://www.bezkoder.com/spring-boot-jwt-authentication/

Popularity 1/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: java

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Contributed on Feb 07 2023

Pragya Keshap

0 Answers Avg Quality 2/10

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