Got it, let's fix your UI-service to use Eureka for service discovery instead of that hardcoded localhost:8093 URL. Here's a step-by-step guide to make this work smoothly:

1. Add Eureka Client Dependencies #

First, you need to include the Spring Cloud Eureka Client dependency in your UI-service's build file.

For Maven (add to pom.xml):

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

For Gradle (add to build.gradle):

implementation 'org.springframework.cloud:spring-cloud-starter-netflix-eureka-client'

2. Configure Eureka Client Settings #

Next, tell your UI-service where the Eureka server is located, and set a service name for itself so it can register with Eureka. Add these properties to your application.properties or application.yml:

application.properties #

# Eureka server URL
eureka.client.service-url.defaultZone=http://your-eureka-server-host:port/eureka/

# UI-service's own name (will show up in Eureka dashboard)
spring.application.name=UI-SERVICE

application.yml #

eureka:
  client:
    service-url:
      defaultZone: http://your-eureka-server-host:port/eureka/

spring:
  application:
    name: UI-SERVICE

Make sure your Login-service is also registered with the same Eureka server, and its spring.application.name is set to something like LOGIN-SERVICE (we’ll use this name later).

3. Create a Load-Balanced RestTemplate #

To let RestTemplate resolve service names from Eureka, configure it with the @LoadBalanced annotation. Create a @Bean for RestTemplate in your configuration class or main application class:

@Configuration
public class RestTemplateConfig {

    @Bean
    @LoadBalanced
    public RestTemplate restTemplate() {
        return new RestTemplate();
    }
}

The @LoadBalanced annotation integrates RestTemplate with Ribbon (Spring’s load balancer), which lets it look up service instances from Eureka’s registry automatically.

4. Update Your Controller Code #

Now replace the hardcoded URL with the service name of your Login-service. Instead of http://localhost:8093/accounts/login, use http://LOGIN-SERVICE/accounts/login (replace LOGIN-SERVICE with whatever name you set for Login-service in its spring.application.name).

Here’s your updated controller method (note we’re injecting the RestTemplate instead of creating a new one each time):

@RestController
public class YourController {

    @Autowired
    private RestTemplate restTemplate;

    @RequestMapping("/log") 
    public String abc(HttpServletRequest request) { 
        // Use Eureka-registered service name instead of hardcoded URL
        final String uri = "http://LOGIN-SERVICE/accounts/login"; 
        String result = restTemplate.getForObject(uri, String.class); 
        return result; 
    }
}

5. Enable Eureka Client on Your Application #

Add the @EnableEurekaClient (or @EnableDiscoveryClient, which works for multiple service discovery tools) annotation to your UI-service’s main application class:

@SpringBootApplication
@EnableEurekaClient
public class UiServiceApplication {
    public static void main(String[] args) {
        SpringApplication.run(UiServiceApplication.class, args);
    }
}

Final Checks #

• Confirm your Eureka server is running and accessible.
• Verify both UI-service and Login-service appear in the Eureka dashboard (usually at http://eureka-host:port/).
• Test the /log endpoint—your UI-service will now automatically find Login-service instances from Eureka, no hardcoded URLs required!

内容的提问来源于stack exchange，提问作者Manish Goyal