Alibaba--Nacos-服务注册

新建多模块maven项目

删除外层的src无用的目录
新建module


在最外层声明基础组件的版本号信息等

<?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>spring.cloud</groupId>
    <artifactId>springcloudAl</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>
    <modules>
        <module>server-consumer</module>
        <module>server-provider</module>
    </modules>
    <!--声明基础组件的版本等信息-->
    <properties>
        <java.version>1.8</java.version>
        <spring-boot.version>2.1.9.RELEASE</spring-boot.version>
        <springcloud-alibaba.version>0.9.0.RELEASE</springcloud-alibaba.version>
        <mybatis-plus.version>3.1.1</mybatis-plus.version>
        <mysql.version>5.1.47</mysql.version>
        <encoding>UTF-8</encoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>
    <!--声明依赖 但是并不引入-->
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>${spring-boot.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!--database-->
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>${mysql.version}</version>
            </dependency>
            <dependency>
                <groupId>com.baomidou</groupId>
                <artifactId>mybatis-plus-boot-starter</artifactId>
                <version>${mybatis-plus.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>${springcloud-alibaba.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
</project>

2.server-provier和server-consumer引入依赖

<?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>springcloudAl</artifactId>
        <groupId>spring.cloud</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>server-provider</artifactId>
    <!--引入SpringBoot等依赖-->
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-logging</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-log4j2</artifactId>
        </dependency>

        <!--Spring Cloud Alibaba-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
    </dependencies>
</project>

1.新建springboot启动类

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.context.annotation.ComponentScan;

//使用SpringBootApplication注解的时候下面显示红线 那么采用@ComponentScan和@EnableAutoConfiguration注解替换 就不报错了
@EnableDiscoveryClient //注册
@ComponentScan(value = "controller")
@EnableAutoConfiguration
public class HelloWorldApplication {
    public static void main(String[] args) {
        SpringApplication.run( HelloWorldApplication.class, args );
    }
}

2. 创建application.yml启动配置文件

server:
  port: 8081
spring:
  application:
    name: server-provider
  cloud:
    nacos:
      discovery:
        server-addr: 192.168.174.135:8848

3.启动项目 查看nacos注册中心

注意事项:新建cloud多层次目录 作者采用的是IDEA工具去新建，然后建立的时候采用的是空maven去新建 再在maven下面建立module目录