springCloud ribbon -10 ribbon 服务调用

@SpringBootApplication
@EntityScan("com.zjk.order.entity")
@EnableEurekaClient
public class OrderApplication {

    @Bean
    @LoadBalanced
    public RestTemplate restTemplate() {
        return new RestTemplate();
    }
    
    public static void main(String[] args) {
        SpringApplication.run(OrderApplication.class,args);
    }
}

    @LoadBalanced

    
    @GetMapping(value = "/findByIdByRibbon/{Id}")
    public TbProduct findByIdByRibbon(@PathVariable Long Id){
        try {
            List instances = discoveryClient.getInstances("service-product");
            ServiceInstance serviceInstance = instances.get(0);
            TbProduct tbProduct = restTemplate.getForEntity("http://service-product/product/{Id}", TbProduct.class,Id).getBody();
            return tbProduct;
        }catch (Exception e){
            e.printStackTrace();
        }
        return null;
    }

            TbProduct tbProduct = restTemplate.getForEntity("http://service-product/product/{Id}", TbProduct.class,Id).getBody();

大家可以看出来，我们可以直接使用服务提供者的服务名称请求

 其实，ribbon 最重要的作用是负载均衡