spring boot nacos 手动注册

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原创最新推荐文章于 2026-07-14 15:59:56 发布 473 阅读 AI 写同款· GEO 优化 ›

如何手动控制nacos注册在使用nacos作为服务注册与发现时，我们可能需要手动控制服务注册到nacos中的时机，如系统启动好之后，需要预热一段时间，加载一些缓存数据之后才允许被其它微服务访问。阅读详情

@Slf4j
@Component
@Order(Integer.MIN_VALUE)
public class NacosRegisterServiceInit implements CommandLineRunner {
    @Autowired
    private NacosDiscoveryProperties nacosDiscoveryProperties;
    @Autowired
    private NacosServiceManager nacosServiceManager;
    @Override
    public void run(String... args) throws Exception {
        //注册服务
        registerInstance(nacosDiscoveryProperties,nacosServiceManager);
        //服务下线
        nacosShutdownHook(nacosDiscoveryProperties,nacosServiceManager);
    }
    
    /**
     * 注册服务
     *
     * @param nacosProperties
     * @param nacosServiceManager
     */
    private void registerInstance(NacosDiscoveryProperties nacosProperties, NacosServiceManager nacosServiceManager) {
        String serviceName = nacosProperties.getService();
        String groupName = nacosProperties.getGroup();
        String clusterName = nacosProperties.getClusterName();
        String ip = nacosProperties.getIp();
        int nacosPort = nacosProperties.getPort();
        try {
            nacosServiceManager.getNamingService().registerInstance(serviceName, groupName, ip, nacosPort, clusterName);
        } catch (NacosException e) {
            log.error("registerInstance from nacos error", e);
        }
        log.info("{} start, registerInstance.serviceName:{},groupName:{},ip:{},port:{},clusterName:{}", SpringUtil.getApplicationName(), serviceName, groupName, ip, nacosPort, clusterName);
    }
    
    /**
     * 注册钩子函数，停机时从nacos下线
     *
     * @param nacosProperties
     * @param nacosServiceManager
     */
    private void nacosShutdownHook(NacosDiscoveryProperties nacosProperties, NacosServiceManager nacosServiceManager) {
        RuntimeUtil.addShutdownHook(() -> {
            String serviceName = nacosProperties.getService();
            String groupName = nacosProperties.getGroup();
            String clusterName = nacosProperties.getClusterName();
            String ip = nacosProperties.getIp();
            int nacosPort = nacosProperties.getPort();
            try {
                nacosServiceManager.getNamingService().deregisterInstance(serviceName, groupName, ip, nacosPort, clusterName);
            } catch (NacosException e) {
                log.error("deregister from nacos error", e);
            }
            log.info("{} stop, deregisterNacosInstance.serviceName:{},groupName:{},ip:{},port:{},clusterName:{}", SpringUtil.getApplicationName(), serviceName, groupName, ip, nacosPort, clusterName);
        });
    }
}