手把手搭建微服务框架（二）：搭建服务提供者，并注册到注册中心（Eureka）

1.新建maven工程，在pom.xml导入先关依赖

<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>1.5.2.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>
	</properties>

	<dependencies>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-eureka</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
	</dependencies>
	<dependencyManagement>
		<dependencies>
			<dependency>
				<groupId>org.springframework.cloud</groupId>
				<artifactId>spring-cloud-dependencies</artifactId>
				<version>Dalston.RC1</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>
	<repositories>
		<repository>
			<id>spring-milestones</id>
			<name>Spring Milestones</name>
			<url>https://repo.spring.io/milestone</url>
			<snapshots>
				<enabled>false</enabled>
			</snapshots>
		</repository>
	</repositories>

2.在resources目录下新建application.properties

#服务端口
server.port=6666
#服务名称，注册至注册中心的名称，方便后期调用服务
spring.application.name=server-provision
#注册至注册中心,注册中心地址
eureka.client.serviceUrl.defaultZone=http://localhost:5555/eureka
#Eureka Client 向 Eureka Server 发送心跳的时间间隔
eureka.instance.lease-renewal-interval-in-seconds=10
#指定 Eureka Client 间隔多久需要向 Eureka Server 发送心跳来告知 Eureka Server 该实例还存活着。
eureka.instance.lease-expiration-duration-in-seconds=5

3.新建Controller，编写服务接口

@RestController
public class UserController {
    
    
	@Value("${server.port}")
	private String port;
	
	@GetMapping("/username")
	public String userName() {
    
    
		return "张三--------端口"+port;
	}
}

4.创建启动类，启动服务

package com.provision;

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

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

5.查看注册中心，出现（SERVER-PROVISION服务）说明注册成功