前两文中的建立的项目，在逻辑上可分为服务提供者（ralab-nlp）和服务消费者（ralab-client），服务消费者采用RestTemplate与之通信
在spring cloude中，采用了服务注册的方式，所有的服务提供者及服务消费者都向注册服务器注册，然后服务消费者从注册服务器上查询相关服务
微服务’ralab-server’
- New microservice ‘ralab-server’ and add the Maven spring-cloud-starter-netflix-eureka-server denpendency
- Add @EnableEurekaServer to the application class
本文建立注册服务器（注册服务器ralab-server），引入eureka-server依赖，pom.xml文件如下：1
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56<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.8.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.ralab</groupId>
<artifactId>ralab-server</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>ralab-server</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>Greenwich.SR2</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</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>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
RalabServerApplication文件1
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15package com.ralab.ralabserver;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
public class RalabServerApplication {
public static void main(String[] args) {
SpringApplication.run(RalabServerApplication.class, args);
}
}
运行RalabServerApplication
打开浏览器http://localhost:8761/
这时没有发现注册实例
