Spring Cloud- Microservice Registration and Discovery using Netflix Eureka

Spring Cloud - Table Of Contents
Microservice Registration and Discovery with Spring cloud using Netflix Eureka- Part 1.
Microservice Registration and Discovery with Spring cloud using Netflix Eureka - Part 2.
Microservice Registration and Discovery with Spring cloud using Netflix Eureka - Part 3.
Microservice Registration and Discovery with Spring cloud using Netflix Eureka - Part 4.
Spring Cloud- Netflix Eureka + Ribbon Simple Example
Spring Cloud- Netflix Eureka + Ribbon + Hystrix Fallback Simple Example
Spring Cloud- Netflix Hystrix Circuit Breaker Simple Example
Spring Cloud- Netflix Feign REST Client Simple Example
Spring Cloud- Netflix Zuul +Eureka Simple Example
Spring Cloud Config Server using Native Mode Simple Example
Spring Cloud Config Server Using Git Simple Example
Spring Boot Admin Simple Example
Spring Cloud Stream Tutorial - Publish Message to RabbitMQ Simple Example
Spring Cloud Stream Tutorial - Consume Message from RabbitMQ Simple Example
Spring Cloud Tutorial - Publish Events Using Spring Cloud Bus
Spring Cloud Tutorial - Stream Processing Using Spring Cloud Data Flow
Spring Cloud Tutorial - Distributed Log Tracing using Sleuth and Zipkin Example
Spring Cloud Tutorial - Spring Cloud Gateway Hello World Example
Spring Cloud Tutorial - Spring Cloud Gateway Filters Example
Spring Cloud Tutorial - Spring Cloud Gateway + Netflix Eureka Example
Spring Cloud Tutorial - Spring Cloud Gateway + Netflix Eureka + Netflix Hystrix Example
Spring Cloud Tutorial - Secure Secrets using Spring Cloud Config + Vault Example

Lets Begin-

• Modify the employee-consumer service as follows-

  Modify the pom.xml with spring cloud dependencies as follows-
  

  <?xml version="1.0" encoding="UTF-8"?>
  <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  	<modelVersion>4.0.0</modelVersion>
  
  	<groupId>com.javainuse</groupId>
  	<artifactId>employee-consumer</artifactId>
  	<version>0.0.1-SNAPSHOT</version>
  	<packaging>jar</packaging>
  
  	<parent>
  		<groupId>org.springframework.boot</groupId>
  		<artifactId>spring-boot-starter-parent</artifactId>
  		<version>1.4.1.RELEASE</version>
  		<relativePath /> <!-- lookup parent from repository -->
  	</parent>
  
  	<properties>
  		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
  		<java.version>1.8</java.version>
  	</properties>
  
  	<dependencies>
  		<dependency>
  			<groupId>org.springframework.boot</groupId>
  			<artifactId>spring-boot-starter-web</artifactId>
  		</dependency>
  
  		<dependency>
  			<groupId>org.springframework.cloud</groupId>
  			<artifactId>spring-cloud-starter-eureka</artifactId>
  		</dependency>
  
  		<dependency>
  			<groupId>org.springframework.boot</groupId>
  			<artifactId>spring-boot-starter-test</artifactId>
  			<scope>test</scope>
  		</dependency>
  
  	</dependencies>
  
  	<dependencyManagement>
  		<dependencies>
  			<dependency>
  				<groupId>org.springframework.cloud</groupId>
  				<artifactId>spring-cloud-dependencies</artifactId>
  				<version>Camden.SR6</version>
  				<type>pom</type>
  				<scope>import</scope>
  			</dependency>
  		</dependencies>
  	</dependencyManagement>
  
  
  </project>
  

  Modfy the ConsumerControllerClient class to autowire the DiscoveryClient dependency.
  

  package com.javainuse.controllers;
  
  import java.io.IOException;
  import java.util.List;
  
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.cloud.client.ServiceInstance;
  import org.springframework.cloud.client.discovery.DiscoveryClient;
  import org.springframework.http.HttpEntity;
  import org.springframework.http.HttpHeaders;
  import org.springframework.http.HttpMethod;
  import org.springframework.http.MediaType;
  import org.springframework.http.ResponseEntity;
  import org.springframework.stereotype.Controller;
  import org.springframework.web.client.RestClientException;
  import org.springframework.web.client.RestTemplate;
  @Controller
  public class ConsumerControllerClient {
  	
  	@Autowired
  	private DiscoveryClient discoveryClient;
  	
  	public void getEmployee() throws RestClientException, IOException {
  		
  		List<ServiceInstance> instances=discoveryClient.getInstances("employee-producer");
  		ServiceInstance serviceInstance=instances.get(0);
  		
  		String baseUrl=serviceInstance.getUri().toString();
  		
  		baseUrl=baseUrl+"/employee";
  		
  		RestTemplate restTemplate = new RestTemplate();
  		ResponseEntity<String> response=null;
  		try{
  		response=restTemplate.exchange(baseUrl,
  				HttpMethod.GET, getHeaders(),String.class);
  		}catch (Exception ex)
  		{
  			System.out.println(ex);
  		}
  		System.out.println(response.getBody());
  	}
  
  	private static HttpEntity<?> getHeaders() throws IOException {
  		HttpHeaders headers = new HttpHeaders();
  		headers.set("Accept", MediaType.APPLICATION_JSON_VALUE);
  		return new HttpEntity<>(headers);
  	}
  }
  

  
  

server.port=8091
eureka.client.serviceUrl.defaultZone=http://localhost:8090/eureka

spring.application.name=employee-consumer

See Also
Spring Boot Hello World Application- Create simple controller and jsp view using Maven
Spring Boot Tutorial-Spring Data JPA
Spring Boot + Simple Security Configuration
Pagination using Spring Boot Simple Example
Spring Boot + ActiveMQ Hello world Example
Spring Boot + Swagger Example Hello World Example
Spring Boot + Swagger- Understanding the various Swagger Annotations
Spring Boot Main Menu
Spring Boot Interview Questions