017 搭建eureka註冊中心

1 eureka server

    建立一個maven工程，pom文件引入依賴：

<dependencies>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-eureka-server</artifactId>
		</dependency>
	</dependencies>
	
	<dependencyManagement>
		<dependencies>
			<dependency>
				<groupId>org.springframework.cloud</groupId>
				<artifactId>spring-cloud-starter-parent</artifactId>
				<version>Camden.SR3</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
		</dependencies>
	</dependencyManagement>

    配置文件：application.yml

server:
  port: 8761
  
spring:
  application:
    name: eureka

eureka: 
  client:
    register-with-eureka: false
    fetch-registry: false
    serviceUrl:
      defaultZone: http://localhost:${server.port}/eureka/

    啓動類：

@SpringBootApplication
@EnableEurekaServer
public class EurekaApplication {
	public static void main(String[] args) {
		SpringApplication.run(EurekaApplication.class, args);
	}
}

    啓動項目並訪問：http://localhost:8761/

2 註冊服務

    在上一篇的 sales 和 user 項目基礎上，以user項目爲例，sales項目相似，修改下面的文件：

    2-1 添加 pom 依賴

<dependencies>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-eureka</artifactId>
		</dependency>
    </dependencies>
	
	<dependencyManagement>
		<dependencies>
			<dependency>
				<groupId>org.springframework.cloud</groupId>
				<artifactId>spring-cloud-starter-parent</artifactId>
				<version>Camden.SR3</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
		</dependencies>
	</dependencyManagement>

    2-2 更新 application.yml

server:
  port: 8081

spring:
  application:
    name: sales
    
eureka:
  client:
    serviceUrl: 
      defaultZone: http://localhost:8761/eureka/
  instance:
    prefer-ip-address: true

    2-3 修改啓動類，添加 @EnableDiscoveryClient 註解

@SpringBootApplication
@EnableDiscoveryClient
public class UserApplication {
	public static void main(String[] args) {
		SpringApplication.run(UserApplication.class, args);
	}
}

    2-4 啓動sales和user項目並訪問：http://localhost:8761/

3 代碼地址

    core-simple : https://code.aliyun.com/995586041/core-simple.git

    eureka：https://code.aliyun.com/995586041/eureka.git

    eureka_user：https://code.aliyun.com/995586041/eureka-user.git

    eureka_sales：https://code.aliyun.com/995586041/eureka-sales.git