SpringCloud Alibaba -负载均衡ribbon报错：java.net.UnknownHostException：xxxxx

使用Nacos作为注册中心，将服务者和消费者均注册到注册中心后，负载均衡ribbon报错。

java.net.UnknownHostException: test-video-service
	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:184) ~[na:1.8.0_60]
	at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) ~[na:1.8.0_60]
	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.8.0_60]
	......

解决:需在RestTemplate上加注解@LoadBalanced

@SpringBootApplication
@EnableDiscoveryClient
public class OrderApplication {
    public static void main(String[] args) {
        SpringApplication.run(OrderApplication.class,args);
    }

    @Bean
    @LoadBalanced
    public RestTemplate getRestTemplate(){
        return new RestTemplate();
    }
}