Spring Boot 在程序中获取启动端口号

import org.springframework.boot.context.embedded.EmbeddedServletContainerInitializedEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.context.annotation.Configuration;
import org.springframework.util.Assert;

/**
 * @author jiangzeyin
 * @create 2017 02 14 12:44
 */
@Configuration
public class ServiceInfoUtil implements ApplicationListener<EmbeddedServletContainerInitializedEvent> {
    private static EmbeddedServletContainerInitializedEvent event;

    @Override
    public void onApplicationEvent(EmbeddedServletContainerInitializedEvent event) {
        ServiceInfoUtil.event = event;
    }

    public static int getPort() {
        Assert.notNull(event);
        int port = event.getEmbeddedServletContainer().getPort();
        Assert.state(port != -1, "端口号获取失败");
        return port;
    }
 }