Springboot WebFlux集成Spring Security实现JWT认证的示例

  org.springframework.bootspring-boot-starter-webflux org.springframework.bootspring-boot-starter-security io.jsonwebtokenjjwt0.9.1

 @Component public class JwtTokenProvider { private static final String AUTHORITIES_KEY = "roles"; private final JwtProperties jwtProperties; private String secretKey; public JwtTokenProvider(JwtProperties jwtProperties) { this.jwtProperties = jwtProperties; } @PostConstruct public void init() { secretKey = Base64.getEncoder().encodeToString(jwtProperties.getSecretKey().getBytes()); } public String createToken(Authentication authentication) { String username = authentication.getName(); Collection authorities = authentication.getAuthorities(); Claims claims = Jwts.claims().setSubject(username); if (!authorities.isEmpty()) { claims.put(AUTHORITIES_KEY, authorities.stream().map(GrantedAuthority::getAuthority).collect(joining(","))); } Date now = new Date(); Date validity = new Date(now.getTime() + this.jwtProperties.getValidityInMs()); return Jwts.builder() .setClaims(claims) .setIssuedAt(now) .setExpiration(validity) .signWith(SignatureAlgorithm.HS256, this.secretKey) .compact(); } public Authentication getAuthentication(String token) { Claims claims = Jwts.parser().setSigningKey(this.secretKey).parseClaimsJws(token).getBody(); Object authoritiesClaim = claims.get(AUTHORITIES_KEY); Collection authorities = authoritiesClaim == null ? AuthorityUtils.NO_AUTHORITIES : AuthorityUtils.commaSeparatedStringToAuthorityList(authoritiesClaim.toString()); User principal = new User(claims.getSubject(), "", authorities); return new UsernamePasswordAuthenticationToken(principal, token, authorities); } public boolean validateToken(String token) { try { Jws claims = Jwts.parser().setSigningKey(secretKey).parseClaimsJws(token); if (claims.getBody().getExpiration().before(new Date())) { return false; } retur<em style="color:transparent">来源gao.dai.ma.com搞@代*码网</em>n true; } catch (JwtException | IllegalArgumentException e) { throw new InvalidJwtAuthenticationException("Expired or invalid JWT token"); } } }

 public class JwtTokenAuthenticationFilter implements WebFilter { public static final String HEADER_PREFIX = "Bearer "; private final JwtTokenProvider tokenProvider; public JwtTokenAuthenticationFilter(JwtTokenProvider tokenProvider) { this.tokenProvider = tokenProvider; } @Override public Mono filter(ServerWebExchange exchange, WebFilterChain chain) { String token = resolveToken(exchange.getRequest()); if (StringUtils.hasText(token) && this.tokenProvider.validateToken(token)) { Authentication authentication = this.tokenProvider.getAuthentication(token); return chain.filter(exchange) .subscriberContext(ReactiveSecurityContextHolder.withAuthentication(authentication)); } return chain.filter(exchange); } private String resolveToken(ServerHttpRequest request) { String bearerToken = request.getHeaders().getFirst(HttpHeaders.AUTHORIZATION); if (StringUtils.hasText(bearerToken) && bearerToken.startsWith(HEADER_PREFIX)) { return bearerToken.substring(7); } return null; } }

 @Configuration public class SecurityConfig { @Bean SecurityWebFilterChain springWebFilterChain(ServerHttpSecurity http, JwtTokenProvider tokenProvider, ReactiveAuthenticationManager reactiveAuthenticationManager) { return http.csrf(ServerHttpSecurity.CsrfSpec::disable) .httpBasic(ServerHttpSecurity.HttpBasicSpec::disable) .authenticationManager(reactiveAuthenticationManager) .exceptionHandling().authenticationEntryPoint( (swe, e) -> { swe.getResponse().setStatusCode(HttpStatus.UNAUTHORIZED); return swe.getResponse().writeWith(Mono.just(new DefaultDataBufferFactory().wrap("UNAUTHORIZED".getBytes()))); }) .accessDeniedHandler((swe, e) -> { swe.getResponse().setStatusCode(HttpStatus.FORBIDDEN); return swe.getResponse().writeWith(Mono.just(new DefaultDataBufferFactory().wrap("FORBIDDEN".getBytes()))); }).and() .securityContextRepository(NoOpServerSecurityContextRepository.getInstance()) .authorizeExchange(it -> it .pathMatchers(HttpMethod.POST, "/auth/login").permitAll() .pathMatchers(HttpMethod.GET, "/admin").hasRole("ADMIN") .pathMatchers(HttpMethod.GET, "/user").hasRole("USER") .anyExchange().permitAll() ) .addFilterAt(new JwtTokenAuthenticationFilter(tokenProvider), SecurityWebFiltersOrder.HTTP_BASIC) .build(); } @Bean public ReactiveAuthenticationManager reactiveAuthenticationManager(CustomUserDetailsService userDetailsService, PasswordEncoder passwordEncoder) { UserDetailsRepositoryReactiveAuthenticationManager authenticationManager = new UserDetailsRepositoryReactiveAuthenticationManager(userDetailsService); authenticationManager.setPasswordEncoder(passwordEncoder); return authenticationManager; } }

 @RestController @RequestMapping("/auth") public class AuthController { @Autowired ReactiveAuthenticationManager authenticationManager; @Autowired JwtTokenProvider jwtTokenProvider; @PostMapping("/login") public Mono login(@RequestBody AuthRequest request) { String username = request.getUsername(); Mono authentication = authenticationManager.authenticate(new UsernamePasswordAuthenticationToken(username, request.getPassword())); return authentication.map(auth -> jwtTokenProvider.createToken(auth)); } }