nacos2.0.3当前最新稳定版本 配置中心功能

最重要的是依赖的版本，版本不对的话，可能导致无法找到对应的key、系统启动时不加载等问题。以下依赖是支持nacos2.0.3 最低版本，部分升级到较高版本正在测试中

启动类

package com.zrh.jserver;

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

@SpringBootApplication
public class JServerApplication {
    public static void main(String[] args) throws InterruptedException {
        ConfigurableApplicationContext applicationContext = SpringApplication.run(JServerApplication.class, args);
        while(true){
            String userName = applicationContext.getEnvironment().getProperty("dev.port");
            String userAge = applicationContext.getEnvironment().getProperty("dev.server");
            System.err.println("user name :" + userName + "; age: " + userAge);
            Thread.sleep(10000);
        }
    }
}

jserver pom.xml

    4.0.0
    com.zrh
    jserver
    0.0.1-SNAPSHOT
    pom
    jserver
    jsd server

    
        1.8
        UTF-8
        UTF-8
        2.4.1
    

    
        start
        jserver-api
        jserver-common
        jserver-dao
        jserver-service
    

    
        
            
                org.springframework.boot
                spring-boot-dependencies
                2.3.12.RELEASE
                pom
                import
            
            
                org.springframework.cloud
                spring-cloud-dependencies
                Hoxton.SR12
                pom
                import
            
            
                com.alibaba.cloud
                spring-cloud-alibaba-dependencies
                2.2.7.RELEASE
                pom
                import
            
            
                org.projectlombok
                lombok
                1.18.22
            
            
                com.alibaba
                fastjson
                1.2.78
            
        
    

    
    
        
            
                org.apache.maven.plugins
                maven-compiler-plugin
                3.8.1
                
                    1.8
                    1.8
                    UTF-8
                
            
        
        
            
                
                    org.apache.maven.plugins
                    maven-deploy-plugin
                    2.8.2
                    
                        true
                    
                
            
        
    

start pom.xml

    4.0.0
    
        com.zrh
        jserver
        0.0.1-SNAPSHOT
        ../pom.xml
    
    start

    

        
            org.springframework.boot
            spring-boot-starter-web
        
        
            com.alibaba.cloud
            spring-cloud-starter-alibaba-nacos-config
        
        
            org.projectlombok
            lombok
        
    
    
    

bootstrap.properties

spring.cloud.nacos.config.server-addr=10.2.57.237:8848
spring.cloud.nacos.config.namespace=9f5d8328-55b8-48f1-a450-249bb434c20e
spring.cloud.nacos.config.extension-configs[0].data-id=jserver-dev.properties
spring.cloud.nacos.config.extension-configs[0].group=ZRH_GROUP
spring.cloud.nacos.config.extension-configs[0].refresh=true

Config.controller

package com.zrh.jserver;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.context.config.annotation.RefreshScope;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("config")
@RefreshScope // 必须
public class ConfigController {

    @Value("${dev.server}")
    private String mc;

    @RequestMapping(value = "/get")
    public String get() {
        System.out.println("1222222222222" + mc);
        return mc;
    }
}

curl http://localhost:8080/config/get