Nocos注册中心

1. Nacos简介

Nacos 致力于帮助您发现、配置和管理微服务。Nacos 提供了一组简单易用的特性集，帮助您快速实现动态服务发现、服务配置、服务元数据及流量管理。

Nacos 帮助您更敏捷和容易地构建、交付和管理微服务平台。 Nacos 是构建以“服务”为中心的现代应用架构 (例如微服务范式、云原生范式) 的服务基础设施。

2. 创建微服务项目

2.1 idea创建项目

选择普通的maven项目即可，暂时不添加依赖，需要修改maven版本，没有适配最新版本。

image-20250615235247440

image-20250615235428503

删除多余的文件,只剩pom.xml配置文件即可,设置打包方式为pom

image-20250615235957154

<packaging>pom</packaging>

添加spring-cloud-alibaba-dependencies和spring-cloud-dependencies依赖

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<?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>3.3.4</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <packaging>pom</packaging>
    <modules>
        <module>servicecs</module>
    </modules>
    <groupId>com.kdd</groupId>
    <artifactId>cloud-demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>cloud-demo</name>
    <description>cloud-demo</description>
    
    
<!--    添加spring-cloud-alibaba-dependencies和spring-cloud-dependencies依赖**-->

    <properties>
        <maven.compiler.source>17</maven.compiler.source>
        <maven.compiler.target>17</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <spring-cloud.version>2023.0.3</spring-cloud.version>
        <spring-cloud-alibaba.version>2023.0.3.2</spring-cloud-alibaba.version>
    </properties>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>${spring-cloud-alibaba.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

2.2 创建services模块

创建普通的module即可,其中的parent选择顶级的父工程

image-20250616000257456

image-20250616000334716

在services.pom.xml中同样添加打包方式为pom,也可以删掉其中的src文件夹,继续在其中添加两个模块,命名为service-product,service-order,记住其中的parent记得选择services作为父模块

image-20250616000725139

image-20250616001049552.png

由于子类自动继承父亲的pom依赖,我们直接在services的pom中添加我们想要的依赖,其子类会自动引入依赖,在services/pom.xml中添加以下依赖

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<dependencies>
       <dependency>
           <groupId>com.alibaba.cloud</groupId>
           <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
       </dependency>
       <dependency>
           <groupId>org.springframework.cloud</groupId>
           <artifactId>spring-cloud-starter-openfeign</artifactId>
       </dependency>
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-web</artifactId>
       </dependency>
   </dependencies>

刷新依赖后,可以看到两个子类都自动导入了父类的依赖

image-20250616001606748

2.3 创建启动项目

在两个service-order的java目录下都创建~MainApplacation和application.properties

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package com.kdd;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class OrderMainApplacation {
    public static void main(String[] args) {
        SpringApplication.run(OrderMainApplacation.class, args);
    }
}
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spring.application.name=service-product
#项目端口号
server.port=9000
#nacos地址
spring.cloud.nacos.server-addr=127.0.0.1:8848

image-20250616002716196

3. 安装nacos

进入nacos官网Nacos官网| Nacos 配置中心 | Nacos 下载| Nacos 官方社区 | Nacos 官网

点击上方的下载,选择window版本的zip文件,下载完成后将压缩包解压到本机不带有中文路径的目录下.

image-20250616001736417

进入bin路径下,地址栏输入cmd打开提示符,使用命令运行nacos,使用单机模式启动

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startup.cmd -m standalone

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访问nacos提供的网站

http://localhost:8848/nacos/index.html

image-20250616002139919

至此nacos安装完成,此时将微服务项目启动部署到nacos即可

4. 启动项目

image-20250616002758139

或者在上面创建的application中分别点击运行

image-20250616002936985

查看nacos网页,其中就显示了配置文件中设置的端口号和服务名称

image-20250616003031664

image-20250616003042806

5. 代码备份

nacos-demo/pom.xml

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<?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>3.3.4</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <packaging>pom</packaging>
    <modules>
        <module>services</module>
    </modules>
    <groupId>com.kdd</groupId>
    <artifactId>nacos-demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>cloud-demo</name>
    <description>cloud-demo</description>


    <!--    添加spring-cloud-alibaba-dependencies和spring-cloud-dependencies依赖**-->

    <properties>
        <maven.compiler.source>17</maven.compiler.source>
        <maven.compiler.target>17</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <spring-cloud.version>2023.0.3</spring-cloud.version>
        <spring-cloud-alibaba.version>2023.0.3.2</spring-cloud-alibaba.version>
    </properties>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>${spring-cloud-alibaba.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

services/pom.xml

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<?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>
    <parent>
        <groupId>com.kdd</groupId>
        <artifactId>nacos-demo</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>

    <artifactId>services</artifactId>
    <packaging>pom</packaging>
    <modules>
        <module>service-product</module>
        <module>service-order</module>
    </modules>

    <properties>
        <maven.compiler.source>17</maven.compiler.source>
        <maven.compiler.target>17</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>
    <dependencies>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>
</project>