如何通过REACTIVE feign客户端使用受基本身份验证保护的Restful web服务

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>

@FeignClient(name = "target-service")
public interface TargetServiceClient {

    @RequestMapping(method = RequestMethod.GET, value = "/api/resource")
    Mono<String> getResource(@RequestHeader("Authorization") String authorization);

}

spring.cloud.gateway.routes[0].id=target-service
spring.cloud.gateway.routes[0].uri=http://target-service.com
spring.cloud.gateway.routes[0].predicates[0]=Path=/api/**
spring.cloud.gateway.routes[0].filters[0]=RewritePath=/api/(?<segment>.*), /$\{segment}

@RestController
public class MyController {

    @Autowired
    private TargetServiceClient targetServiceClient;

    @GetMapping("/my-resource")
    public Mono<String> getMyResource() {
        String authorization = "Basic " + Base64.getEncoder().encodeToString("username:password".getBytes());
        return targetServiceClient.getResource(authorization);
    }

}