Node.js 代码段

,

一些常用或有用的代码段，积少成多。

http

  • server
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    const http = require('http');

    http.createServer((request, response) => {
        response.writeHead(200, { 'Content-Type': 'text/plain;charset=utf-8'});

        response.end('你好，跳跳');
    }).listen(8080);
  • request
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    const http = require('http');
    const option = {
        hostname: '127.0.0.1',
        port: 8080,
        path: '/',
        method: 'GET'
    };

    const req = http.request(option, (res) => {
        console.log('STATUS: ' + res.statusCode);
        console.log('HEADERS: ' + JSON.stringify(res.headers));
        res.setEncoding('utf8');
        res.on('data', (chunk) => {
            console.log(chunk);
        });
    });

    req.end();

Stream

  • ReadStream/WriteStream
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const fs = require('fs');

function copyFile(source, dist) {
   const readStream = fs.createReadStream(source);
   const writeStream = fs.createWriteStream(dist);

   readStream.on('data', (chunk) => {
           writeStream.write(chunk);
   });

   // 或者
   fs.createReadStream(source).pipe(fs.createWriteStream(dist));
}