test.js

// 标准输入输出 (管道)
// process.stdin.pipe(process.stdout);

// const http = require("http");
// const server = http.createServer((req, res) => {
//     if (req.method === "POST") {
//         req.pipe(res);
//     }
// });

// server.listen(8800);

// 复制文件
// const fs = require("fs");
// const path = require("path");

// const fileName1 = path.resolve(__dirname, "data.txt");
// const fileName2 = path.resolve(__dirname, "data-bak.txt");

// const readStream = fs.createReadStream(fileName1);
// const writeStream = fs.createWriteStream(fileName2);

// readStream.pipe(writeStream);

// readStream.on("data", (chunk) => {
// 	console.log(chunk.toString());
// });

// readStream.on("end", () => {
// 	console.log("copy done");
// });

const http = require('http')
const fs = require('fs')
const path = require('path')
const fileName1 = path.resolve(__dirname, 'data.txt')
const server = http.createServer((req, res) => {
  if (req.method === 'GET') {
    const readStream = fs.createReadStream(fileName1)
    readStream.pipe(res)
  }
})
server.listen(8800)