目录：

1、搭建服务注册的服务端;

2、将Spring boot的一个项目做为服务注册进去；

一、搭建服务注册的服务端

1、首先通过IntelliJ IDEA或其它IDE创建一个spring boot 项目；

2、在pom.xml文件中添加spring cloud的版本依赖和Eureka的服务端依赖，具体代码如下：

<?xml version="1.0" encoding="UTF-8"?> <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.lyq.demo</groupId> 	<artifactId>eureka-server</artifactId> 	<version>0.0.1-SNAPSHOT</version> 	<packaging>jar</packaging>  	<name>eureka-server</name> 	<description>eureka-server 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> 	</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-test</artifactId> 			<scope>test</scope> 		</dependency>  		<!-- 添加springcloud-erueka服务端依赖 --> 		<dependency> 			<groupId>org.springframework.cloud</groupId> 			<artifactId>spring-cloud-starter-eureka-server</artifactId> 		</dependency> 	</dependencies>  	<!-- spring-cloud版本依赖 --> 	<dependencyManagement> 		<dependencies> 			<dependency> 				<groupId>org.springframework.cloud</groupId> 				<artifactId>spring-cloud-dependencies</artifactId> 				<version>Dalston.SR1</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>   </project> 

3、通过注解@EnableEurekaServer启动此为一个服务注册中心提供给其它应用进行对话，具体代码如下：

package com.lyq.demo;  import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.boot.builder.SpringApplicationBuilder; import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;  /**  * 通过@EnableEurekaServer开启此端为服务注册中心  */ @SpringBootApplication @EnableEurekaServer public class EurekaServerApplication {  	public static void main(String[] args) { 		SpringApplication.run(EurekaServerApplication.class, args); 	} }

4、在application.yml或者application.properties(格式自己去做对应的改变)文件中进行注册服务端的参数配置：

#配置端口 server:   port: 1111  #配置为Eureka的服务端-服务注册中心 eureka:   instance:     hostname: localhost   client:     #因为自己是注册中心，设置为false，表示不向注册中心注册自己     register-with-eureka: false     #因为自己是注册中心，设置为false，表示不需要去检索服务     fetch-registry: false     #Eureka客户端将要注册的注册中心的地址     serviceUrl:       defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/ 

5、编译运行项目即可，在浏览器输入: http://localhost:1111出现Eureka信息面板

二、将Spring boot的一个项目做为服务注册进去

1、创建一个springboot项目eureka-clientone;

2、在pom.xml引入springcloud的依赖还有eureka-client的依赖，具体如下：

<?xml version="1.0" encoding="UTF-8"?> <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.lyq.demo</groupId> 	<artifactId>eureka-clientone</artifactId> 	<version>0.0.1-SNAPSHOT</version> 	<packaging>jar</packaging>  	<name>eureka-clientone</name> 	<description>eureka-clientone 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> 	</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-test</artifactId> 			<scope>test</scope> 		</dependency>  		<!-- springcloud-eureka-client依赖 --> 		<dependency> 			<groupId>org.springframework.cloud</groupId> 			<artifactId>spring-cloud-starter-eureka</artifactId> 		</dependency>  	</dependencies>  	<!-- spring-cloud版本依赖 --> 	<dependencyManagement> 		<dependencies> 			<dependency> 				<groupId>org.springframework.cloud</groupId> 				<artifactId>spring-cloud-dependencies</artifactId> 				<version>Dalston.SR1</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>   </project> 

3、通过注解@EnableEurekaClient开启注册功能，激活Eureka的DiscoveryClient实现，具体代码如下：

package com.lyq.demo;  import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.netflix.eureka.EnableEurekaClient;  /**  * 使用注解@EnableEurekaClient开启注册功能，激活Eureka的DiscoveryClient实现  * @author : lyq  * @date   : 2018/1/9  */ @SpringBootApplication @EnableEurekaClient public class EurekaClientoneApplication {  	public static void main(String[] args) { 		SpringApplication.run(EurekaClientoneApplication.class, args); 	} } 

4、在application.yml或者application.properties(格式自己去做对应的改变)文件中进行注册服务端的参数配置：

# 配置注册到注册中心的服务名称 spring:   application:     name: hello-service  # 配置服务注册中心的地址 eureka:   client:     serviceUrl:       defaultZone: http://localhost:1111/eureka/

5、如果需要打印请求的日志，在HelloController里面注解DiscoveryClient对象来获取信息打印，具体如下：

package com.lyq.demo.controller;   import org.apache.log4j.Logger; import org.omg.PortableInterceptor.SYSTEM_EXCEPTION; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.cloud.client.ServiceInstance; import org.springframework.cloud.client.discovery.DiscoveryClient; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RestController;  /**  * @author : lyq  * @date   : 2018/1/9  */ @RestController public class HelloController {      private final Logger logger = Logger.getLogger(HelloController.class);      @Autowired     private DiscoveryClient discoveryClient;      @GetMapping("hello")     public String hello() {         ServiceInstance instance = discoveryClient.getLocalServiceInstance();         System.out.println("********************************************");         System.out.println("* request path: "+instance.getUri() + " host: "+instance.getHost()+" serviceid: "+instance.getServiceId());         System.out.println("********************************************");         return "Eureka-clientone";     }  } 

6、先运行服务端，然后在运行此需要注册的客户端在控制台可以见到如下注册信息：

7、或者在浏览器输入:http://localhost:1111也可以看到注册信息

Summary:

    到目前位置单点服务注册已经实现，接下来做集群，请见后续文章