Spring Boot 使用 Nacos 的服务注册

Spring Boot 是 Spring 官方推出的快速开发框架，内嵌服务器、自动配置，无需 XML，几行代码即可构建生产级应用。它简化依赖管理，支持微服务与云原生，让 Java 开发更高效、更轻量。
spring Boot 版本 3.3.7
nacos 版本 3.1.1
Spring Cloud 版本 2023.0.3
Spring Cloud Alibaba 版本 2023.0.3.4

1. 添加依赖（Maven）

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>3.3.7</version>
        <relativePath/>
    </parent>
 
    <groupId>com.tsphp</groupId>
    <artifactId>study</artifactId>
    <version>0.0.1-SNAPSHOT</version>
 
    <name>study</name>
    <description>study</description>
    <properties>
        <java.version>17</java.version>
        <spring-cloud.version>2023.0.3</spring-cloud.version>
        <spring-cloud-alibaba.version>2023.0.3.4</spring-cloud-alibaba.version>
    </properties>
    <dependencyManagement>
        <dependencies>
            <!-- Spring Cloud -->
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!-- Spring Cloud Alibaba -->
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>${spring-cloud-alibaba.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    <dependencies>
        <!-- Spring Boot Web 依赖 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
 
        <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>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
 
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
 
        <!-- Nacos Discovery (服务注册与发现) -->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>
    </dependencies>
 
    <repositories>
        <repository>
            <id>nexus-aliyun</id>
            <name>nexus-aliyun</name>
            <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
            <releases>
                <enabled>true</enabled>
            </releases>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>
    <pluginRepositories>
        <pluginRepository>
            <id>aliyun-plugin</id>
            <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
            <releases>
                <enabled>true</enabled>
            </releases>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </pluginRepository>
    </pluginRepositories>
 
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
 
</project>

2. 配置文件

application.yml

      
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spring:
  application:
    name: study-server  # 服务名
  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848
        namespace: public
        group: DEFAULT_GROUP
        # 如果有账号密码（Nacos 开启鉴权）
        username: study
        password: study123
  config:
    import:
      - optional:nacos:${spring.application.name}.yaml  # 显示导入
server:
  port: 9801

3. Nacos 配置文件

a) 安装&启动 Nacos Server 3.1.1，若未安装可参考上一篇文章 https://mp.weixin.qq.com/s/9ss7bws0J9JNHz4cy4tcug

测试效果：

• • 启动后未报错

• • 查看 Nacos > 服务管理 > 服务列表，是否包含 study-server

• • 若已存在即已注册完成，可启动多个实例观察变化

• • 下图则表示同一个服务启动了两个实例，已经注册完成，可详情中查看具体
  

  

【小结】

服务注册？Done！是不是比泡面还快？🍜
但……注册完就完事了？No no no～
这只是打开微服务宇宙的第一道传送门——
真正的魔法？下期揭晓！🔮
快去冰箱拿罐快乐水，或者摸两分钟鱼🐟，
你值得这份“服务上线不崩”的小确幸！
下期见！