Spring Cloud Security配置JWT和OAuth2的集成实现授权管理（三）

#Spring Cloud Security配置JWT和OAuth2的集成实现授权管理（三）| 来源: 网络整理| 查看: 265

编写JwtTokenFilter和JwtAuthenticationFilter

为了使用JWT和OAuth2进行授权管理，我们需要编写两个过滤器：JwtTokenFilter和JwtAuthenticationFilter。

JwtTokenFilter用于提取和验证JWT令牌：

public class JwtTokenFilter implements GatewayFilter { private final ReactiveJwtDecoder jwtDecoder; public JwtTokenFilter(ReactiveJwtDecoder jwtDecoder) { this.jwtDecoder = jwtDecoder; } @Override public Mono filter(ServerWebExchange exchange, GatewayFilterChain chain) { String authorizationHeader = exchange.getRequest().getHeaders().getFirst(HttpHeaders.AUTHORIZATION); if (authorizationHeader != null && authorizationHeader.startsWith("Bearer ")) { String token = authorizationHeader.substring(7); return jwtDecoder.decode(token) .flatMap(jwt -> { exchange.getRequest().mutate() .header("X-User-Id", jwt.getSubject()) .header("X-User-Roles", jwt.getClaimAsStringList("roles")) .build(); return chain.filter(exchange); }) .onErrorResume(e -> chain.filter(exchange)); } return chain.filter(exchange); } }

在上面的代码中，我们使用ReactiveJwtDecoder接口来解码JWT令牌，并使用filter方法来提取和验证JWT令牌。如果JWT令牌有效，则将用户ID和角色添加到请求标头中。否则，我们将继续处理请求。

JwtAuthenticationFilter用于验证OAuth2授权并将OAuth2令牌添加到请求标头中：

public class JwtAuthenticationFilter extends AbstractGatewayFilterFactory { private final ReactiveOAuth2AuthorizedClientService authorizedClientService; public JwtAuthenticationFilter(ReactiveOAuth2AuthorizedClientService authorizedClientService) { super(Config.class); this.authorizedClientService = authorizedClientService; } @Override public GatewayFilter apply(Config config) { return (exchange, chain) -> { return exchange.getPrincipal() .cast(OAuth2AuthenticationToken.class) .flatMap(authentication -> authorizedClientService.loadAuthorizedClient( authentication.getAuthorizedClientRegistrationId(), authentication.getName()) .flatMap(authorizedClient -> { exchange.getRequest().mutate() .header(HttpHeaders.AUTHORIZATION, "Bearer " + authorizedClient.getAccessToken().getTokenValue()) .build(); return chain.filter(exchange); }) .switchIfEmpty(chain.filter(exchange))); }; } public static class Config {} }

在上面的代码中，我们使用ReactiveOAuth2AuthorizedClientService接口来获取已授权的OAuth2客户端，并使用filter方法将OAuth2令牌添加到请求标头中。如果找不到已授权的客户端，则继续处理请求。

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