一台机器可能存在多个网卡也就同时存在多个IP地址,如果我想知道我这个服务在向Nacos注册的时候使用的哪一个IP该怎么获取呢?

非常简单,你可以通过这种方式获取

import com.alibaba.cloud.nacos.NacosDiscoveryProperties;
import org.springframework.boot.CommandLineRunner;
import org.springframework.context.annotation.Configuration;

import javax.annotation.Resource;

@Configuration
public class NacosRegistrationRegister implements CommandLineRunner  {
    @Resource
    private NacosDiscoveryProperties nacosDiscoveryProperties;

    @Override
    public void run(String... args) throws Exception {
        String ip = nacosDiscoveryProperties.getIp();
        System.out.println(ip);
    }
}

也可以在任意地方注入nacos的NacosDiscoveryProperties来获取比如下面

import com.alibaba.cloud.nacos.NacosDiscoveryProperties;
import org.springframework.context.annotation.Configuration;

import javax.annotation.PostConstruct;
import javax.annotation.Resource;

@Configuration
public class NacosRegistrationRegister   {
    @Resource
    private NacosDiscoveryProperties nacosDiscoveryProperties;

    @PostConstruct
    public void init() {
        String ip = nacosDiscoveryProperties.getIp();
        System.out.println(ip);
    }
}

输出的就是本机向Nacos注册的IP地址

10.xxx.xxx.212