SpringCloud系列（8）--将服务提供者Provider注册进Eureka Server_Java

前言：上一章节我们介绍了eureka服务端的安装与配置，本章节则介绍关于微服务如何入职eureka server

eureka架构原理图

1、修改provider-payment8001子模块的pom.xml文件，引入eureka clinet的依赖，然后reolad一下，下载依赖

例：

<?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">
    <parent>
        <artifactid>springcloud01</artifactid>
        <groupid>com.ken.springcloud</groupid>
        <version>1.0-snapshot</version>
    </parent>
    <modelversion>4.0.0</modelversion>

    <artifactid>provider-payment8001</artifactid>

    <dependencies>
        <!--以下依赖都没写版本号，没写版本号的情况下会引用父项目的版本-->
        <dependency>
            <groupid>org.springframework.boot</groupid>
            <artifactid>spring-boot-starter-web</artifactid>
        </dependency>
        <!--监控-->
        <dependency>
            <groupid>org.springframework.boot</groupid>
            <artifactid>spring-boot-starter-actuator</artifactid>
        </dependency>
        <!--mybatis和springboot的整合-->
        <dependency>
            <groupid>org.mybatis.spring.boot</groupid>
            <artifactid>mybatis-spring-boot-starter</artifactid>
        </dependency>
        <dependency>
            <groupid>com.alibaba</groupid>
            <artifactid>druid</artifactid>
        </dependency>
        <!--mysql-connector-java-->
        <dependency>
            <groupid>mysql</groupid>
            <artifactid>mysql-connector-java</artifactid>
        </dependency>
        <!--jdbc-->
        <dependency>
            <groupid>org.springframework.boot</groupid>
            <artifactid>spring-boot-starter-jdbc</artifactid>
        </dependency>
        <!--热部署-->
        <dependency>
            <groupid>org.springframework.boot</groupid>
            <artifactid>spring-boot-devtools</artifactid>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <!--lombok插件-->
        <dependency>
            <groupid>org.projectlombok</groupid>
            <artifactid>lombok</artifactid>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupid>org.springframework.boot</groupid>
            <artifactid>spring-boot-starter-test</artifactid>
            <scope>test</scope>
        </dependency>
        <!--引入自己定义的api调用包，可以使用payment模块的entity-->
        <dependency>
            <groupid>com.ken.springcloud</groupid>
            <artifactid>api-commons</artifactid>
            <version>${project.version}</version>
        </dependency>
        <!--eureka clinet-->
        <dependency>
            <groupid>org.springframework.cloud</groupid>
            <artifactid>spring-cloud-starter-netflix-eureka-client</artifactid>
        </dependency>
    </dependencies>

</project>

2、修改provider-payment8001子模块的application.yml文件配置的内容，将eureka相关配置引入

#服务端口号
server:
  port: 8001

#服务名称
spring:
  application:
    name: cloud-payment-service
  datasource:
    type: com.alibaba.druid.pool.druiddatasource      #当前数据源操作类型
    driver-class-name: com.mysql.cj.jdbc.driver       #mysql驱动包（mysql驱动包版本是5的要写成com.mysql.jdbc.driver）
    url: jdbc:mysql://localhost:3306/cloud?useunicode=true&characterencoding=utf-8&usessl=false&servertimezone=gmt%2b8 #mysql连接路径，记得把cloud这个数据库名改成自己的，或者新建名为cloud的数据库
    username: root
    password: 123456

eureka:
  client:
    #表示是否将自己注册进eureka server里，默认为true
    register-with-eureka: true
    #是否从eureka server抓取已有的注册信息，默认为true，单节点无所谓，集群必须设置为true才能配合ribbon使用负载均衡
    fetch-registry: true
    service-url:
      defaultzone: http://localhost:7001/eureka

#mybatis配置
mybatis:
  mapper-locations: classpath:mapper/*.xml            #扫描类路径下的mapper文件夹下所有的.xml配置文件
  type-aliases-package: com.ken.springcloud.entities  #该包下的所有entity类都取默认别名

效果图：

3、修改provider-payment8001子模块的主启动类，将provider-payment8001子模块标注为eureka client

package com.ken.springcloud;

import org.springframework.boot.springapplication;
import org.springframework.boot.autoconfigure.springbootapplication;
import org.springframework.cloud.netflix.eureka.enableeurekaclient;

@springbootapplication
//标注为eureka client（服务注册中心）
@enableeurekaclient
public class paymentmain {
    public static void main(string[] args) {
        springapplication.run(paymentmain.class, args);
    }
}

效果图：