About vertx, java.net.BindException: Address already in use

Question

Now, I begin to learn vert.x.

At first, I tried to define a function that can work.

However, 当我第二次运行程序的时候, my current implementation gives me the following error:

三月 22, 2018 3:29:23 下午 io.vertx.core.http.impl.HttpServerImpl
严重: java.net.BindException: Address already in use

我希望第二次运行时，可以首先检测下端口，如果端口被占用，先关闭端口

I could not find an answer from the documentation.

Source code

package com.project.service;

import io.vertx.core.AbstractVerticle;
import io.vertx.core.Vertx;
import io.vertx.core.VertxOptions;
import io.vertx.ext.web.Router;

import java.util.function.Consumer;

public class VerticleMain extends AbstractVerticle {


    @Override
    public void start() throws Exception {

        Router router = Router.router(vertx);

        router.route().handler(routingContext -> {
            routingContext.response()
                    .putHeader("content-type","text/html;charset=UTF-8")
                    .end("我的人设开始");
        });
        vertx.createHttpServer().requestHandler(router::accept).listen(8181);
    }

    public static void deployVertx() {
        String verticleId = VerticleMain.class.getName();
        VertxOptions options = new VertxOptions();
        Consumer<Vertx> runner = vertxStart -> {
            vertxStart.deployVerticle(verticleId);
        };
        Vertx vertx = Vertx.vertx(options);
        runner.accept(vertx);
    }

    public static void main(String[] args) {

        VerticleMain.deployVertx();
    }
}

Answer 1

好像关闭端口占用,是要关闭占用端口的系统进程吧你要先去查是哪个进程占用了该端口,然后在kill进程 其实你第一次运行完了关闭程序就可以了哇,何必搞的这么麻烦