Spring Cloud Eureka (第二篇) 服務提供者 (eureka client)

一、創建一個服務提供者 (eureka client)

當client向server註冊時，它會提供一些元數據，例如主機和端口，URL，主頁等。Eureka server 從每個client實例接收心跳消息。 如果心跳超時，則通常將該實例從註冊server中刪除。

pom.xml如下：

<modelVersion>4.0.0</modelVersion>

	<groupId>com.example</groupId>
	<artifactId>eureka-client</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>

	<name>eureka-client</name>
	<description>Demo project for Spring Boot</description>

	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>1.5.9.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>
		<spring-cloud.version>Edgware.SR5</spring-cloud.version>
	</properties>

	<dependencies>
		<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>
		<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>${spring-cloud.version}</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
		</dependencies>
	</dependencyManagement>

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

二 ，通過註解@EnableEurekaClient 表明自己是一個eurekaclient.

@SpringBootApplication
@EnableEurekaClient
@RestController
public class EurekaClientApplication {

	public static void main(String[] args) {
		SpringApplication.run(EurekaClientApplication.class, args);
	}
	 @Value("${server.port}")
	    String port;

	    @RequestMapping("/test")
	    public String test() {
	        return  "port:" + port;
	    }
}

三，需要在配置文件中註明自己的服務註冊中心的地址，application.yml配置文件如下：

server:
  port: 8762

spring:
  application:
    name: service-hi

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

四，啓動工程，打開http://localhost:8761 ，即eureka server 的網址：

你會發現一個服務已經註冊在服務中了，服務名爲SERVICE-HI ,端口爲7862

五，這一篇文章基於上一篇文章的工程，啓動eureka-server 工程；啓動service-hi工程，它的端口爲8762

https://blog.csdn.net/weixin_42694286/article/details/83411041