Spring云网关预飞行Cors误差与角度

Question

Access to XMLHttpRequest at 'http://localhost:9090/api/v1/publishers/?pageNo=1&pageSize=10&sort=name,desc&sort=city,desc' from origin 'http://localhost:4200' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: Redirect is not allowed for a preflight request.

server:
  port: 9090
keycloak-client:
  server-url: http://keycloak-url:8080/auth
  realm: dev
spring:
  application:
    name: gateway
  security:
    oauth2:
      client:
        provider:
          keycloak:
            issuer-uri: ${keycloak-client.server-url}/realms/${keycloak-client.realm}
            user-name-attribute: preferred_username
        registration:
          keycloak:
            client-id: cei-backend
            client-secret: f4d3242b-1fee-4dab-a491-d91ac51d637f
  cloud:
    gateway:
      default-filters:
        - TokenRelay
      globalcors:
        cors-configurations:
          '[/**]':
            allowedOrigins: "http://localhost:4200"
            allowedHeaders: "*"
            allowedMethods:
            - GET
            - POST
            - DELETE
            - PUT
      routes:
        - id: publisher_route
          uri: http://localhost:8000
          predicates:
            - Path=/api/v1/publishers/**
          filters:
            - RemoveRequestHeader=Cookie        
logging:
  level:
    org.springframework.cloud.gateway: DEBUG
    reactor.netty: DEBUG

@Configuration
public class SecurityConfig {

    @Bean
    public SecurityWebFilterChain springSecurityFilterChain(ServerHttpSecurity http,
                                                            ReactiveClientRegistrationRepository clientRegistrationRepository) {
        // Authenticate through configured OpenID Provider
        http.oauth2Login();
        // Also logout at the OpenID Connect provider
        http.logout(logout -> logout.logoutSuccessHandler(new OidcClientInitiatedServerLogoutSuccessHandler(
                clientRegistrationRepository)));
        // Require authentication for all requests
        http.authorizeExchange().anyExchange().authenticated();
        // Allow showing /home within a frame
        http.headers().frameOptions().mode(Mode.SAMEORIGIN);
        // Disable CSRF in the gateway to prevent conflicts with proxied service CSRF
        http.csrf().disable();

        return http.build();
    }

我从angular调用这个API，但我在飞行前请求上得到了CORS错误。我什么都试过了，但不知道哪里出错了。你知道吗？

Answer 1

我通过将Angular App移动到API网关后面来解决它，并在API网关和微服务中添加了以下代码

在API网关中

http.cors();

在微服务中

@Configuration
@EnableWebMvc
public class RestServiceCorsApplication implements WebMvcConfigurer {
    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**");
    }
}