server.js

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

const PORT = 18080;
const ROOT = __dirname;

const mimeTypes = {
    '.html': 'text/html',
    '.js': 'text/javascript',
    '.css': 'text/css',
    '.json': 'application/json',
    '.png': 'image/png',
    '.jpg': 'image/jpeg',
    '.gif': 'image/gif',
    '.svg': 'image/svg+xml',
    '.ico': 'image/x-icon'
};

const server = http.createServer((req, res) => {
    let filePath = path.join(ROOT, req.url === '/' ? 'index.html' : req.url);
    const extname = path.extname(filePath).toLowerCase();
    const contentType = mimeTypes[extname] || 'application/octet-stream';

    fs.readFile(filePath, (err, content) => {
        if (err) {
            if (err.code === 'ENOENT') {
                res.writeHead(404, { 'Content-Type': 'text/plain; charset=utf-8' });
                res.end('404 Not Found');
            } else {
                res.writeHead(500);
                res.end(`Server Error: ${err.code}`);
            }
        } else {
            res.writeHead(200, { 
                'Content-Type': contentType,
                'Cache-Control': 'no-cache'
            });
            res.end(content, 'utf-8');
        }
    });
});

server.listen(PORT, '0.0.0.0', () => {
    console.log(`🚀 排班系统已启动`);
    console.log(`📍 访问地址: http://localhost:${PORT}`);
    console.log(`📍 局域网地址: http://0.0.0.0:${PORT}`);
    console.log(`\n按 Ctrl+C 停止服务`);
});