Eureka之服务注册

本文介绍微服务作为Eureka Client如何注册到Eureka Server。

1 创建项目,导入依赖

<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.yiidian</groupId>
	<artifactId>user_service</artifactId>
	<version>0.0.1-SNAPSHOT</version>

	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.0.1.RELEASE</version>
		<relativePath />
	</parent>

	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
		<java.version>1.8</java.version>
		<!-- SpringCloud版本,F系列 -->
		<spring-cloud.version>Finchley.RC1</spring-cloud.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-data-jpa</artifactId>
		</dependency>
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<scope>runtime</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
		<!-- Eureka客户端 -->
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
		</dependency>
	</dependencies>

	<dependencyManagement>
		<dependencies>
			<!-- SpringCloud依赖,一定要放到dependencyManagement中,起到管理版本的作用即可 -->
			<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>

	<repositories>
		<repository>
			<id>spring-milestones</id>
			<name>Spring Milestones</name>
			<url>https://repo.spring.io/milestone</url>
			<snapshots>
				<enabled>false</enabled>
			</snapshots>
		</repository>
	</repositories>

</project>

2 配置Eureka Client

建立application.yml,内容如下:

server:
  port: 9001 # 端口
  
spring:
  application:
    name: user-service  # 服务名称
    
    # 数据源
  datasource:
    url: jdbc:mysql://localhost:3306/microservice?characterEncoding=utf8
    driver-class-name: com.mysql.jdbc.Driver
    username: root
    password: root
    
    # jpa配置
  jpa:
    show-sql: true
    
  # Eureka服务注册配置
eureka:
  client:
    register-with-eureka: true  # 服务提供方必须向Eureka服务器注册,该值必须为true
    fetch-registry: false 
    service-url:
      defaultZone: http://127.0.0.1:10086/eureka

3 编写启动类

package com.yiidian;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;

/**
 * 
 * 一点教程网 - http://www.yiidian.com
 */
@SpringBootApplication
@EnableEurekaClient // 开启Eureka客户端
public class UserServiceApplication {

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

}

4 启动并查看注册信息

运行启动类,访问Eureka Server,效果如下:

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