app6.py
import dash import dash_bootstrap_components as dbc import dash_html_components as html from dash.dependencies import Input, Output, State import dash_uploader as du import os from flask import send_from_directory import time app = dash.Dash(__name__, suppress_callback_exceptions=True) du.configure_upload(app, 'NetDisk', use_upload_id=False) app.layout = html.Div( dbc.Container( [ html.H3('简易的个人云盘应用'), html.Hr(), html.P('文件上传区：'), du.Upload(id='upload', text='点击或拖动文件到此进行上传！', text_completed='已完成上传文件：', max_files=1000), html.Hr(), dbc.Row( [ dbc.Button('删除选中的文件',, outline=True), dbc.Button('打包下载选中的文件',, outline=True) ] ), html.Hr(), dbc.Spinner( dbc.Checklist( ) ), html.A(id='download-url', target='_blank') ] ) ) @app.server.route('/download/<file>') def download(file): return send_from_directory('NetDisk', file) @app.callback( [Output('file-list-check', 'options'), Output('download-url', 'children'), Output('download-url', 'href')], [Input('upload', 'isCompleted'), Input('delete-btn', 'n_clicks'), Input('download-btn', 'n_clicks')], State('file-list-check', 'value') ) def render_file_list(isCompleted, delete_n_clicks, download_n_clicks, check_value): # 获取上下文信息 ctx = dash.callback_context if ctx.triggered[0]['prop_id'] == 'delete-btn.n_clicks': for file in check_value: try: os.remove(os.path.join('NetDisk', file)) except FileNotFoundError: pass if ctx.triggered[0]['prop_id'] == 'download-btn.n_clicks': import zipfile with zipfile.ZipFile('NetDisk/打包下载.zip', 'w') as zipobj: for file in check_value: try: zipobj.write(os.path.join('NetDisk', file)) except FileNotFoundError: pass return [ {'label': file, 'value': file} for file in os.listdir('NetDisk') if file != '打包下载.zip' ], '打包下载链接', '/download/打包下载.zip' time.sleep(2) return [ {'label': file, 'value': file} for file in os.listdir('NetDisk') if file != '打包下载.zip' ], '', '' if __name__ == '__main__': app.run_server(debug=True)以上就是本文的全部内容，欢迎在评论区与我进行讨论！