1.确认Nacos版本

我的Nacos版本是1.4.2

2.确认Nacos相关依赖的版本之间兼容，一下是我的一些pom.xml依赖

    <!--父级项目的--><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.2.6.RELEASE</version></parent><properties><java.version>1.8</java.version><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding><spring-cloud.version>Hoxton.SR10</spring-cloud.version><spring-cloud-alibaba.version>2.2.6.RELEASE</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><!--公共模块的--><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-jpa</artifactId><version>2.2.6.RELEASE</version></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId></dependency><dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.56</version></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.6</version></dependency></dependencies><!--微服务模块的--><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId><version>2.2.6.RELEASE</version></dependency><!--nacos客户端--><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId><version>2.2.6.RELEASE</version></dependency><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId><version>2.2.6.RELEASE</version></dependency></dependencies>

不需要根据我的版本来设置，可以自行到Spring Boot、Spring Cloud、Spring Cloud Alibaba、Nacos依赖的官网查看各自的版本对应：版本说明 · alibaba/spring-cloud-alibaba Wiki · GitHub

3.springboot配置，application.yml

spring:cloud:nacos:username: {用户名}password: {密码}discovery:server-addr: {Nacos地址}namespace: {空间}config:server-addr: {Nacos地址}namespace: {空间}