const http = require('http');
const fs = require('fs');
const path = require('path');

const PORT = 14515;

http.createServer((req, res) => {
    let filePath = path.join(__dirname, req.url === '/' ? '/index.html' : req.url);

    fs.readFile(filePath, (err, data) => {
        if (err) {
            // 如果文件不存在，返回 index.html
            fs.readFile(path.join(__dirname, 'index.html'), (err, indexData) => {
                if (err) {
                    res.writeHead(500, { 'Content-Type': 'text/plain' });
                    res.end('500 Internal Server Error');
                } else {
                    res.writeHead(200, { 'Content-Type': 'text/html' });
                    res.end(indexData);
                }
            });
        } else {
            // 返回找到的文件
            const ext = path.extname(filePath).toLowerCase();
            const mimeTypes = {
                '.html': 'text/html',
                '.js': 'application/javascript',
                '.css': 'text/css',
                '.json': 'application/json',
                '.png': 'image/png',
                '.jpg': 'image/jpg',
                '.gif': 'image/gif',
                '.svg': 'image/svg+xml',
            };

            res.writeHead(200, { 'Content-Type': mimeTypes[ext] || 'application/octet-stream' });
            res.end(data);
        }
    });
}).listen(PORT, () => {
    console.log(`Server running at http://0.0.0.0:${PORT}/`);
});

node server.js

nohup node server.js &  //在后臺(tái)可以運(yùn)行