AI 生成: 一个基于浏览器网址的跨设备文件快传工具，支持拖拽上传、二维码扫描、实时传输进度显示。

2026-09-28 22:46:55 +08:00
commit 7b09d4b79f
6 changed files with 745 additions and 0 deletions
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+# -*- coding: utf-8 -*-
+"""
+QuickShare - 浏览器跨设备文件快传服务
+"""
+import os
+import socket
+import time
+from flask import Flask, render_template, request, jsonify, send_from_directory, abort
+from werkzeug.utils import secure_filename
+
+app = Flask(__name__)
+
+# 上传目录
+UPLOAD_FOLDER = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'uploads')
+os.makedirs(UPLOAD_FOLDER, exist_ok=True)
+
+# 允许所有文件类型，最大 2GB
+app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER
+app.config['MAX_CONTENT_LENGTH'] = 2 * 1024 * 1024 * 1024
+
+
+def get_local_ip():
+    """获取本机局域网 IP 地址"""
+    try:
+        s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+        s.connect(('8.8.8.8', 80))
+        ip = s.getsockname()[0]
+        s.close()
+        return ip
+    except Exception:
+        return '127.0.0.1'
+
+
+def format_size(size):
+    """格式化文件大小"""
+    for unit in ['B', 'KB', 'MB', 'GB']:
+        if size < 1024:
+            return f"{size:.1f} {unit}"
+        size /= 1024
+    return f"{size:.1f} TB"
+
+
+@app.route('/')
+def index():
+    """主页面"""
+    ip = get_local_ip()
+    port = int(os.environ.get('PORT', 5000))
+    url = f"http://{ip}:{port}"
+    return render_template('index.html', url=url)
+
+
+@app.route('/upload', methods=['POST'])
+def upload_file():
+    """接收上传的文件"""
+    if 'file' not in request.files:
+        return jsonify({'success': False, 'error': '没有文件'}), 400
+
+    file = request.files['file']
+    if file.filename == '':
+        return jsonify({'success': False, 'error': '文件名为空'}), 400
+
+    # 安全文件名，避免路径穿越
+    filename = secure_filename(file.filename)
+    if not filename:
+        filename = f"file_{int(time.time())}"
+
+    # 避免覆盖同名文件
+    save_path = os.path.join(app.config['UPLOAD_FOLDER'], filename)
+    base, ext = os.path.splitext(filename)
+    counter = 1
+    while os.path.exists(save_path):
+        filename = f"{base}_{counter}{ext}"
+        save_path = os.path.join(app.config['UPLOAD_FOLDER'], filename)
+        counter += 1
+
+    file.save(save_path)
+    size = os.path.getsize(save_path)
+
+    return jsonify({
+        'success': True,
+        'filename': filename,
+        'size': format_size(size),
+        'size_bytes': size
+    })
+
+
+@app.route('/files')
+def list_files():
+    """列出已上传的文件"""
+    files = []
+    if os.path.exists(UPLOAD_FOLDER):
+        for name in os.listdir(UPLOAD_FOLDER):
+            path = os.path.join(UPLOAD_FOLDER, name)
+            if os.path.isfile(path):
+                stat = os.stat(path)
+                files.append({
+                    'name': name,
+                    'size': format_size(stat.st_size),
+                    'size_bytes': stat.st_size,
+                    'mtime': stat.st_mtime
+                })
+    # 按修改时间倒序
+    files.sort(key=lambda x: x['mtime'], reverse=True)
+    return jsonify(files)
+
+
+@app.route('/download/<path:filename>')
+def download_file(filename):
+    """下载文件"""
+    # 安全检查
+    if '..' in filename or filename.startswith('/'):
+        abort(400)
+    return send_from_directory(app.config['UPLOAD_FOLDER'], filename, as_attachment=True)
+
+
+@app.route('/delete/<path:filename>', methods=['DELETE'])
+def delete_file(filename):
+    """删除文件"""
+    if '..' in filename or filename.startswith('/'):
+        abort(400)
+    path = os.path.join(app.config['UPLOAD_FOLDER'], filename)
+    if os.path.isfile(path):
+        os.remove(path)
+        return jsonify({'success': True})
+    return jsonify({'success': False, 'error': '文件不存在'}), 404
+
+
+if __name__ == '__main__':
+    port = int(os.environ.get('PORT', 5000))
+    ip = get_local_ip()
+    print("\n" + "=" * 50)
+    print("  QuickShare 已启动")
+    print("=" * 50)
+    print(f"  本机访问:  http://localhost:{port}")
+    print(f"  局域网访问: http://{ip}:{port}")
+    print("=" * 50 + "\n")
+    app.run(host='0.0.0.0', port=port, debug=False, threaded=True)