如何使用MySQL和JavaScript实现一个简单的文件浏览功能

const fileInput = document.getElementById('fileInput');
fileInput.addEventListener('change', (event) => {
   const selectedFile = event.target.files[0];
   const xhr = new XMLHttpRequest();
   xhr.open('POST', '/upload');
   xhr.send(selectedFile);
});

const express = require('express');
const mysql = require('mysql');

const app = express();
const connection = mysql.createConnection({
   host: 'localhost',
   user: 'root',
   passWord: 'password',
   database: 'files'
});

app.get('/files', (req, res) => {
   connection.query('SELECT * FROM files', (error, results) => {
      if (error) throw error;
      res.json(results);
   });
});

app.listen(3000, () => {
   console.log('Server is running on port 3000');
});

fetch('/files')
   .then(response => response.json())
   .then(data => {
      const fileList = document.getElementById('fileList');
      data.forEach(file => {
         const listItem = document.createElement('li');
         listItem.textContent = file.name;
         fileList.appendChild(listItem);
      });
   });