SpringCloud如何解决服务之间的通信问题

		 <!--web-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--consul client-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-consul-discovery</artifactId>
        </dependency>

server.port=8888
spring.application.name=USERS

#consul server
spring.cloud.consul.host=localhost
spring.cloud.consul.port=8500

server.port=9999
spring.application.name=ORDERS

#consul server
spring.cloud.consul.host=localhost
spring.cloud.consul.port=8500

package com.baizhi.controller;

import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@Slf4j
public class OrderController {

    @GetMapping("order")
    public String demo(){
       log.info("order demo...");
        return "order demo OK!!!";
    }
}

package com.baizhi.controller;

import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

@RestController
@Slf4j
public class UserController {

    @GetMapping("user")
    public String invokeDemo(){
         log.info("user demo...");
        //1、调用订单服务 服务地址：http://localhost:9999/order  必须是get方式 接收返回值String
        RestTemplate restTemplate = new RestTemplate();
        String orderResult = restTemplate.getForObject("http://localhost:9999/order", String.class);

        log.info("调用订单服务成功:{}",orderResult);

        return "调用order服务成功，结果为:"+orderResult;
    }
}