如何通过执行一个node js文件来生成本地主机URL？

const http = require('http');
const url = require('url');

const server = http.createServer((req, res) => {
  // 处理请求
});

const port = 3000; // 指定端口号
server.listen(port, () => {
  console.log(`Server is running on http://localhost:${port}`);
});

const server = http.createServer((req, res) => {
  const parsedUrl = url.parse(req.url, true);
  const hostname = parsedUrl.hostname;
  const port = parsedUrl.port;

  // 处理请求
});

const server = http.createServer((req, res) => {
  const parsedUrl = url.parse(req.url, true);
  const hostname = parsedUrl.hostname;
  const port = parsedUrl.port;

  // 处理请求
});

const port = 3000; // 指定端口号
server.listen(port, () => {
  const localUrl = `http://localhost:${port}`;
  console.log(`Server is running on ${localUrl}`);
});