1. overview

In fact, it is a client. The service is registered in the eureka service center, so that the service can be provided to other clients.

2. steps

2.1 new construction

Create a new maven module project, named Eureka client, whose father POM is spring cloud. The jar package of Eureka client needs to be introduced. The POM file is as follows:

<?xml version="1.0"?>
<project
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
	xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
	<modelVersion>4.0.0</modelVersion>
	<parent>
		<groupId>com.lin</groupId>
		<artifactId>springcloud</artifactId>
		<version>0.0.1-SNAPSHOT</version>
	</parent>
	<groupId>com.lin</groupId>
	<artifactId>eureka-client</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>eureka-client</name>
	<url>http://maven.apache.org</url>
	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
	</properties>
	<dependencies>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>3.8.1</version>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
	</dependencies>

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

2.2 startup

Create a new startup class ServiceHiApplication.java to provide a service. The service name is SERVICE-HI/hi. The code is as follows:

package org.eureka.client;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
@SpringBootApplication
@EnableEurekaClient
@RestController
public class ServiceHiApplication {
    public static void main(String[] args) {
        SpringApplication.run( ServiceHiApplication.class, args );
    }
    @Value("${server.port}")
    String port;
    @RequestMapping("/hi")
    public String home(@RequestParam(value = "name", defaultValue = "linwu") String name) {
        return "hi " + name + " ,i am from port:" + port;
    }
} 

2.3 configuration file application

Create a resources folder and create a new application.yml file below it. The configuration is as follows:

server:
  port: 8762

spring:
  application:
    name: service-hi

eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8761/eureka/