加上ribbon后报No instances available for xxx，不加则无法使用IRule的替代方案

写一个CustomerLoadBalancerConfiguration类并将以下代码粘入

import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.loadbalancer.core.RandomLoadBalancer;
import org.springframework.cloud.loadbalancer.core.ReactorLoadBalancer;
import org.springframework.cloud.loadbalancer.core.ServiceInstanceListSupplier;
import org.springframework.cloud.loadbalancer.support.LoadBalancerClientFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.core.env.Environment;

public class CustomerLoadBalancerConfiguration {
    @Bean
    ReactorLoadBalancer<ServiceInstance> randomLoadBalancer(Environment environment,
                                                            LoadBalancerClientFactory loadBalancerClientFactory) {
        String name = environment.getProperty(LoadBalancerClientFactory.PROPERTY_NAME);

        return new RandomLoadBalancer(loadBalancerClientFactory
                .getLazyProvider(name, ServiceInstanceListSupplier.class),
                name);
    }
}

并在主启动类上加入以下注解

@LoadBalancerClient(name = "CLOUD-PAYMENT-SERVICE",configuration = CustomerLoadBalancerConfiguration.class)

之后去掉pom文件中的ribbon就可以了

参考：没有IRule接口咋办啊 加Ribbon依赖会报错的 eureka3.0以上版本包括了Ribbon 但没有Ribbon依赖就没有IRule接口啊_大数据-优快云问答