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军政门户/server.js

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+// 简易静态服务器，根目录为 军政门户/
+// 用法: node server.js [port]
+const http = require('http');
+const fs = require('fs');
+const path = require('path');
+
+const ROOT = path.resolve(__dirname);
+const PORT = process.argv[2] || 8765;
+
+const MIME = {
+  '.html': 'text/html; charset=utf-8',
+  '.css':  'text/css; charset=utf-8',
+  '.js':   'application/javascript; charset=utf-8',
+  '.jpg':  'image/jpeg',
+  '.jpeg': 'image/jpeg',
+  '.png':  'image/png',
+  '.gif':  'image/gif',
+  '.ico':  'image/x-icon',
+  '.svg':  'image/svg+xml'
+};
+
+const server = http.createServer((req, res) => {
+  let url = decodeURIComponent(req.url.split('?')[0]);
+  if (url === '/') url = '/css/首页模板.html';
+  const filePath = path.join(ROOT, url);
+
+  // 防越界
+  if (!filePath.startsWith(ROOT)) {
+    res.writeHead(403); return res.end('Forbidden');
+  }
+
+  fs.stat(filePath, (err, stat) => {
+    if (err || !stat.isFile()) {
+      res.writeHead(404, { 'Content-Type': 'text/plain; charset=utf-8' });
+      return res.end('404 Not Found: ' + url);
+    }
+    const ext = path.extname(filePath).toLowerCase();
+    res.writeHead(200, { 'Content-Type': MIME[ext] || 'application/octet-stream' });
+    fs.createReadStream(filePath).pipe(res);
+  });
+});
+
+server.listen(PORT, '127.0.0.1', () => {
+  console.log(`预览服务器已启动: http://localhost:${PORT}/`);
+  console.log(`首页模板: http://localhost:${PORT}/preview.html`);
+});