springcloud 服务间通讯方式 Feign

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

@EnableFeignClients

@FeignClient(name = "product")
public interface ProductClient{

    @GetMapping("/msg")
    String getMsg();
}

    @Autowired
    private ProductClient productClient;
    /**
     * LoadBalancerClient + RestTemplate方式
     *
     * @return
     */
    @GetMapping("/msg4")
    public String helloMsg4() {

        //Feign
        String response = productClient.getMsg();
        log.info("response={}", response);

        return response;
    }