------------------客戶端controller層---------------------
@RestController
public class ClientFeignController {

	@Autowired
	private ProductFeignInterface productFeignInterface;

	@GetMapping("/msg")
	public String msg() {
		String msg = productFeignInterface.getMsg();
		return msg;
	}
	
}


-----------------客戶端feign調用的接口-----------------------
/**
 * name:被調用的服務名稱
 

 */
@FeignClient(name = "product")
public interface ProductFeignInterface {

	/**
	 * 根據getMapping匹配接口，與方法名無關
	 * @return
	 */
	@GetMapping("/product/getMsg")
	public String getMsg();
}

------------------服務端接口-----------------------------------
@RestController
public class ServerController {

	@GetMapping("/product/getMsg
 
")
	public String msg() {
		return "this is product‘ msg 1";
	}
}

應用通信-方案二:Feign