获取springcloud项目中子项目的端口号（nacos不知到，因此不知到配置的端口号，本地启动获取）

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.ApplicationArguments;
import org.springframework.boot.ApplicationRunner;
import org.springframework.stereotype.Component;
import org.springframework.cloud.client.discovery.DiscoveryClient;

@Component
public class NacosPortPrinter implements ApplicationRunner {

    @Autowired
    private DiscoveryClient discoveryClient;

    @Override
    public void run(ApplicationArguments args) throws Exception {
//YOUR-SERVICE-NAME 是子服务名称

discoveryClient.getInstances("YOUR-SERVICE-NAME").forEach(instance -> { System.out.println("Service Port: " + instance.getPort()); }); } }