Microservice Registration with Spring cloud using Netflix Eureka - Part 2

Define the domain class Employee

package com.javainuse.model;

public class Employee {
	private String empId;
	private String name;
	private String designation;
	private double salary;

	public Employee() {
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getDesignation() {
		return designation;
	}

	public void setDesignation(String designation) {
		this.designation = designation;
	}

	public double getSalary() {
		return salary;
	}

	public void setSalary(double salary) {
		this.salary = salary;
	}

	public String getEmpId() {
		return empId;
	}

	public void setEmpId(String empId) {
		this.empId = empId;
	}

}

Expose the service using the Controller as-

package com.javainuse.controllers;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

import com.javainuse.model.Employee;

@RestController
public class TestController {

	@RequestMapping(value = "/employee", method = RequestMethod.GET)
	public Employee firstPage() {

		Employee emp = new Employee();
		emp.setName("emp1");
		emp.setDesignation("manager");
		emp.setEmpId("1");
		emp.setSalary(3000);

		return emp;
	}

}

Finally define the Spring Boot Main class

package com.javainuse;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class SpringBootHelloWorldApplication {

	public static void main(String[] args) {
		SpringApplication.run(SpringBootHelloWorldApplication.class, args);
	}
}

Compile and the run the SpringBootHelloWorldApplication.java as a Java application.
Go to localhost:8080/employee
Deploy Spring Boot Microservice

Develop employee-consumer as follows- The maven project we will be creating is as follows-

sprcloud_1-4

The pom.xml with spring batch dependencies is 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.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>

	</dependencies>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>


</project>

Define the controller to consume the service exposed by employee-producer above using the RESTTemplate as follows-

package com.javainuse.controllers;

import java.io.IOException;
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.web.client.RestClientException;
import org.springframework.web.client.RestTemplate;

public class ConsumerControllerClient {

	public void getEmployee() throws RestClientException, IOException {

		String baseUrl = "http://localhost:8080/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);
	}
}

Finally create the Bean for the above controller, load it and call the getEmployee() Method.

package com.javainuse;

import java.io.IOException;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestClientException;

import com.javainuse.controllers.ConsumerControllerClient;

@SpringBootApplication
public class SpringBootHelloWorldApplication {

	public static void main(String[] args) throws RestClientException, IOException {
		ApplicationContext ctx = SpringApplication.run(
				SpringBootHelloWorldApplication.class, args);
		
		ConsumerControllerClient consumerControllerClient=ctx.getBean(ConsumerControllerClient.class);
		System.out.println(consumerControllerClient);
		consumerControllerClient.getEmployee();
		
	}
	
	@Bean
	public  ConsumerControllerClient  consumerControllerClient()
	{
		return  new ConsumerControllerClient();
	}
}

Define the application.properties as

server.port=8091

Running the Rest Client we get the output as
sprcloud_1-3

Download Source Code

Download it -
Employee Producer Service
Employee Consumer Service

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Microservice Registration and Discovery with Spring cloud using Netflix Eureka

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Download Source Code

Search Tutorials

Microservice Registration and Discovery with Spring cloud using Netflix Eureka

Lets Begin-

Download Source Code

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