1.在provide上添加pom（必須加上web） 如果不加 啟動後就會自己關閉

    　　<dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
            <version>2.1.1.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
            <version>2.1.1.RELEASE</version>
        </dependency>

    <dependency>
        <groupId>com.google.code.gson</groupId>
        <artifactId>gson</artifactId>
        <version>2.8.5</version>
    </dependency>

　　　　<dependency>
　　　　　　<groupId>org.springframework.boot</groupId>
　　　　　　<artifactId>spring-boot-starter-web</artifactId>

2. yml配置

server:
  port: 8001

eureka:
  client:     #客戶端註冊進eureka服務列表內
    service-url:
      defaultZone: http://localhost:7001/eureka

3. 啟動類

package com.service;

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

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

4. 修改主機映射名稱

instance:
    instance-id: mmdept123

完整

eureka:
  client:     #客戶端註冊進eureka服務列表內
    service-url:
      defaultZone: http://localhost:7001/eureka
  instance:
    instance-id: mmdept123

Eureka 註冊微服務到服務中心