spring cloud 集成nacos config discovery最新

废话不多说直接上代码

1. 首先创建一个spring boot maven项目

2. pom文件增加依赖

   
   
       4.0.0
       
           org.springframework.boot
           spring-boot-starter-parent
           2.3.9.RELEASE
            
       
       com.example
       nacosDemo
       0.0.1-SNAPSHOT
       nacosDemo
       Demo project for Spring Boot
       
           1.8
       
       
           
               org.springframework.boot
               spring-boot-starter-web
           
   
           
               com.alibaba.cloud
               spring-cloud-starter-alibaba-nacos-config
               2.2.3.RELEASE
           
   
           
               com.alibaba.cloud
               spring-cloud-starter-alibaba-nacos-discovery
               2.2.3.RELEASE
           
   
           
               org.springframework.boot
               spring-boot-starter-test
               test
           
       
   
       
           
               
                   org.springframework.boot
                   spring-boot-maven-plugin
               
           
       
   
   
   
   

   image.gif

3. 在application.properties文件中添加配置

   spring.application.name=agent
   spring.cloud.nacos.config.server-addr=127.0.0.1:8848
   spring.cloud.nacos.discovery.server-addr=127.0.0.1:8848
   //定义配置文件后缀为.properties
   spring.cloud.nacos.config.file-extension=properties
   //此处为自定义命名空间,下面会有说明
   spring.cloud.nacos.config.namespace=29de6443-9f76-4c4b-9ff2-f754961365d4
   //此处为自定义分组,下面有说明
   spring.cloud.nacos.config.group=OLD_GROUP
   

   image.gif

4. 在启动类里面加上

   @EnableDiscoveryClient
   

5. 在配置类上面添加实现当前类属性动态更新

   @RefreshScope
   

   package com.example.nacosdemo;
   
   import org.springframework.beans.factory.annotation.Value;
   import org.springframework.boot.SpringApplication;
   import org.springframework.boot.autoconfigure.SpringBootApplication;
   import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
   import org.springframework.cloud.context.config.annotation.RefreshScope;
   import org.springframework.web.bind.annotation.RequestMapping;
   import org.springframework.web.bind.annotation.RestController;
   
   @SpringBootApplication
   @RefreshScope
   @RestController
   @EnableDiscoveryClient
   public class NacosDemoApplication {
   
       public static void main(String[] args) {
           SpringApplication.run(NacosDemoApplication.class, args);
       }
   
       @Value("${redis.host}")
       private String config;
   
       @RequestMapping("/getValue")
       public String getValue() {
           return config;
       }
   }
   
   

   image.gif

6. 官网下载nacos-server,启动nacos

7. 创建命名空间
   image
   image.gif

8. 创建dataid,配填写配置
   image
   image.gif

9. 完成以上操作即可顺利启动