SpringCloud如何使用Eureka实现服务之间的传递数据

@RestController
@RequestMapping("/user")
public class UserController {
 
    @Resource
    private UserRepository userRepository;
 
    @GetMapping("/getallUser")
    public List<User> getUserPage(){
        return userRepository.findAll();
    }
 
    @GetMapping("/getUser")
    public User getUser(Long userId){
        return userRepository.getOne(userId);
    }
}

@Repository
public interface UserRepository extends JpaRepository<User,Long> {
}

@Entity
@Table(name="TM_USER")
@JSONIgnoreProperties(value={"hibernateLazyInitializer","handler","fieldHandler"})
public class User implements Serializable, Cloneable {
 
    @Id
    @GeneratedValue(strategy= GenerationType.AUTO)
    private Long userId;
 
    
    @Column(name = "USER_NAME")
    private String userName;
 
    
    @Column
    private String name;
 
    
    @Column
    private BigDecimal balance;
 
    
    @Column
    private int age;}

@SpringBootApplication
@EnableEurekaClient  //启用eureka客户端
public class MicroserviceSimplecConsumerOrderServerApplication {
 
 @Bean
 public RestTemplate restTemplate(){
  return new RestTemplate();
 }
 
 public static void main(String[] args) {
  SpringApplication.run(MicroserviceSimplecConsumerOrderServerApplication.class, args);
 }
}

user:
  urlPath: Http://localhost:9021

@RestController
@RequestMapping("/order")
public class OrderServerController {
 
    @Autowired
    private RestTemplate restTemplate;
 
    @Value("${user.urlPath}")
    private String urlPath;
    //获取集合方式
    @GetMapping("/allUser")
    private List<User> getAllUser(){
        ResponseEntity<List<User>> responseEntity = restTemplate.exchange("urlPath"+/user/getallUser?",
                HttpMethod.GET, null, new ParameterizedTypeReference<List<User>>() {});
        return responseEntity.getBody();
    }
    //获取单个对象方式
    @GetMapping("/getUser")
    private User getUser(Long userId){
        User user = restTemplate.getForObject("urlPath"+/user/getUser?userId="+userId,User.class);
        return user;
    }
}

spring:
  application:
    name: microservice-privider-user

@GetMapping("/allUser")  //返回集合
   private List<User> getAllUser(){
        ResponseEntity<List<User>> responseEntity = restTemplate.exchange("microservice-privider-user"+"/user/getallUser", HttpMethod.GET, null, new ParameterizedTypeReference<List<User>>() {});
        return responseEntity.getBody();
    }
//返回对象
    @GetMapping("/getUser")
    private User getUser(Long userId){
        User user = restTemplate.getForObject("microservice-privider-user"+/user/getUser?userId="+userId,User.class);
        return user;
    }

<!-- Eureka Client -->
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>

#eureka
spring.application.name=producer
#注册中心地址
eureka.client.service-url.defaultZone=http://localhost:8761/eureka
#是否把自己注册
eureka.client.reGISter-with-eureka=true
#是否搜索服务信息
eureka.client.fetch-registry=true
 
#使用ip地址注册
eureka.instance.prefer-ip-address=true
#注册中心列表显示的状态
eureka.instance.instance-id=${spring.cloud.client.ip-address}:${server.port}

@Bean
@LoadBalanced//负载均衡
public RestTemplate initRestTemplate() {
 return new RestTemplate();//
 }
 
 @Bean//负载均衡的规则，下面的是其中之一：随机，还有权重，轮询等
 public IRule initIRule() {
  return new RandomRule();
 }

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-openfeign</artifactId>
    <version>2.1.1.RELEASE</version>
</dependency>

package com.sumengnan.test.WEB;
 
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.GetMapping;
 
@FeignClient(name = "eureka",fallback = HtystrixEurekaFallback.class)//调用失败后回滚执行方法
public interface EurekaServiceapi {
    @GetMapping("test")
    String test();
}

package com.sumengnan.test.web;
 

public class HtystrixEurekaFallback implements EurekaServiceApi {
    @Override
    public String test() {
        return "连接失败，请稍后再试！";
    }
}