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springcloud项目使用nacos

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参考资料：

Nacos 融合 Spring Cloud：

https://nacos.io/zh-cn/docs/v2/ecology/use-nacos-with-spring-cloud.html

Java SDK：

https://nacos.io/zh-cn/docs/v2/guide/user/sdk.html

POM文件引用：

父pom

springcloud，springboot，springcloudalibaba，nacos版本引用

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<properties>
      <java.version>11</java.version>
      <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
      <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
      <spring-boot.version>2.6.13</spring-boot.version>
      <spring-cloud.version>2021.0.5</spring-cloud.version>
      <spring-cloud-alibaba.version>2021.0.4.0</spring-cloud-alibaba.version>
      <alibaba.nacos.version>2.1.1</alibaba.nacos.version>
  </properties>
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<dependencyManagement>
       <dependencies>
           <!--统一版本-->
           <dependency>
               <groupId>com.luck.sugar</groupId>
               <artifactId>luck-bom</artifactId>
               <version>1.0.0</version>
               <type>pom</type>
               <scope>import</scope>
           </dependency>
           <!-- SpringBoot 依赖配置 -->
           <dependency>
               <groupId>org.springframework.boot</groupId>
               <artifactId>spring-boot-dependencies</artifactId>
               <version>${spring-boot.version}</version>
               <type>pom</type>
               <scope>import</scope>
           </dependency>
           <!-- SpringCloud 微服务 -->
           <dependency>
               <groupId>org.springframework.cloud</groupId>
               <artifactId>spring-cloud-dependencies</artifactId>
               <version>${spring-cloud.version}</version>
               <type>pom</type>
               <scope>import</scope>
           </dependency>
           <!-- Alibaba Nacos 配置 -->
           <dependency>
               <groupId>com.alibaba.nacos</groupId>
               <artifactId>nacos-client</artifactId>
               <version>${alibaba.nacos.version}</version>
           </dependency>
           <!-- Mybatis 依赖配置 -->

           <!-- SpringCloud Alibaba 微服务 -->
           <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>

因为我们使用了注册中心所以配置不能再使用application.yaml，需要优先级更高的bootstrap文件来找到nacos的配置文件，在springboot2.2以后bootstrap默认是关闭的需要打开才能默认使用bootstrap文件为配置文件，需要在pom文件中添加模块引用

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<dependencies>
    <!-- bootstrap 启动器 -->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-bootstrap</artifactId>
    </dependency>
</dependencies>

子pom

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

      <!--nacos-->
      <dependency>
          <groupId>com.alibaba.cloud</groupId>
          <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
      </dependency>
      <dependency>
          <groupId>com.alibaba.cloud</groupId>
          <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
      </dependency>
  </dependencies>

配置文件修改：

上节解释了配置文件变化，以下是bootstrap.yml的示例

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# Tomcat
server:
  port: 1066

# Spring
spring:
  application:
    # 应用名称
    name: luck-uid
  profiles:
    active: dev
  cloud:
    nacos:
      discovery:
        # 服务注册地址
        server-addr: 49.235.122.65:8848
        namespace: 5e81acf8-7ce3-42fe-b666-878b41d27fca
      config:
        # 配置中心地址
        server-addr: 49.235.122.65:8848
        # 配置文件格式
        file-extension: yml
        # 共享配置
        shared-configs:
          - application-${spring.profiles.active}.${spring.cloud.nacos.config.file-extension}
        namespace: 5e81acf8-7ce3-42fe-b666-878b41d27fca





启动类注解添加：

@EnableDiscoveryClient

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@EnableDiscoveryClient
@SpringBootApplication
public class LuckUidApplication {

    public static void main(String[] args) {
        SpringApplication.run(LuckUidApplication.class, args);
        System.out.println("(♥◠‿◠)ﾉﾞ  ID服务启动成功   ლ(´ڡ`ლ)ﾞ  \n" +
                " .-------.       .-------.          \n" +
                " | i--------------------i |         \n" +
                " | |                    | |         \n" +
                " \\|   O       O        |/          \n" +
                "   |      /\\           |           \n" +
                "   |     /  \\          |           \n" +
                "   |    \\__/           |           \n" +
                "   |      __-- .        |           \n" +
                "           `-..-'              ");
    }

}

效果展示：

异常备注：

bootstrap.yml未生效：链接地址为 127.0.0.1

pom未添加spring-cloud-starter-bootstrap，

配置文件格式异常

项目启动完成后没有注册到nacos中：

子pom中未引用：spring-cloud-starter-alibaba-nacos-discovery