spring cloud---服务治理框架 Eureka

首先创建spring boot 工程，引入如下 pom.xml

    <parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>1.3.7.RELEASE</version>
		<relativePath></relativePath>
	</parent>


	<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-dependencies</artifactId>
				<version>Brixton.SR5</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
		</dependencies>
	</dependencyManagement>

通过@EnableEurekaServer注解开启服务注册中心功能

@EnableEurekaServer
@SpringBootApplication
public class MicroserviceDiscoveryEurekaServerApplication {

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

默认设置下，该服务注册中心会将自己当成客户端来注册自己，我们这只是单体的结构，所以要禁用它的客户端注册行为，很简单，只需要在配置文件里添加如下配置

server:
  port: 8761
spring:
  application:
    name: microservice-provider-movie
eureka:
  client:
    register-with-eureka: false//禁用想注册中心注册自己
    fetch-register: false//是否去检索服务
    serviceUrl:
      defaultZone: http://localhost:8761/eureka/

完成上述配置后，启动应用，并访问 http://localhost:8761/可以看到如下所示的eureka信息界面，其中 instance currently registered with eureka是空的，说明还没有实例在这注册

注册服务

在完成了注册中心的搭建后，再添加一个springboot应用到eureka中去，创建一个springboot应用，并添加如下依赖

<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.0.2.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>Finchley.RC2</spring-cloud.version>
	</properties>
<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>				
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-eureka</artifactId>
			<version>1.4.4.RELEASE</version>
		</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>

再配置文件里加上

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

spring:
  application:
    name: microservice-provider-movie

再启动类上添加@EnableDiscoveryClient注解，启动项目再控制台可以看到这样的日志，表示注册成功

2018-10-01 09:18:22.462  INFO 11060 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_MICROSERVICE-PROVIDER-MOVIE/localhost:microservice-provider-movie:8083: registering service...
2018-10-01 09:18:22.561  INFO 11060 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_MICROSERVICE-PROVIDER-MOVIE/localhost:microservice-provider-movie:8083 - registration status: 204

也可以再eureka的信息面板

spring cloud---服务治理框架 Eureka

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