Spring Cloud入门-Nacos实现注册和配置中心(Hoxton版本)

import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import com.alibaba.cloud.nacos.NacosDiscoveryProperties;
import com.alibaba.nacos.api.annotation.NacosInjected;
import com.alibaba.nacos.api.exception.NacosException;
import com.alibaba.nacos.api.naming.NamingService;
import com.alibaba.nacos.api.naming.pojo.Instance;
 
@Configuration
@EnableDiscoveryClient
public class NacosDiscoveryClientConfiguration {
 
    @NacosInjected
    private NamingService namingService;
 
    @NacosInjected
    private NacosDiscoveryProperties discoveryProperties;
 
    @Bean
    public NamingService nacosNamingService() throws NacosException {
        // 可以在这里进行NamingService的定制化配置
        return namingService;
    }
 
    // 注册实例到Nacos
    public void registerInstance() throws NacosException {
        String serviceName = discoveryProperties.getService();
        String ip = "127.0.0.1";
        Instance instance = new Instance();
        instance.setIp(ip);
        instance.setPort(8080);
        // 注册实例
        namingService.registerInstance(serviceName, instance);
    }
 
    // 注销实例
    public void deregisterInstance() throws NacosException {
        String serviceName = discoveryProperties.getService();
        String ip = "127.0.0.1";
        Instance instance = new Instance();
        instance.setIp(ip);
        instance.setPort(8080);
        // 注销实例
        namingService.deregisterInstance(serviceName, ip, 8080);
    }
}

这段代码展示了如何在Spring Cloud应用中使用Nacos作为服务注册和发现的客户端。它定义了一个配置类，其中包含了注册实例和注销实例的方法。这些方法可以在应用启动或者停止时被调用，以保证服务实例在Nacos中正确注册和注销。