文件批量下载管理器：URL列表导入、并发下载、进度实时显示、失败重试

🖥️ 运行效果

🚀 实例简介

一个功能完整的文件批量下载工具，支持URL列表导入、并发下载、进度实时显示、失败重试。适合需要批量下载文件（图片、文档、视频等）的场景。

💻 核心代码

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
文件批量下载管理器
功能：URL列表导入、并发下载、进度实时显示、失败重试、断点续传
"""
import tkinter as tk
from tkinter import ttk, filedialog, messagebox, scrolledtext
import threading
import requests
import os
import time
from urllib.parse import urlparse
import platform

CHINESE_FONT = "WenQuanYi Zen Hei" if platform.system() == "Linux" else "Microsoft YaHei"

class BatchDownloader:
    def __init__(self, root):
        self.root = root
        self.root.title("文件批量下载管理器")
        self.root.geometry("900x700")
        self.downloading = False
        
        # 标题
        tk.Label(root, text="📥 文件批量下载管理器", 
                font=(CHINESE_FONT, 18, "bold"), fg="#2c3e50").pack(pady=10)
        
        # URL输入区
        tk.Label(root, text="下载URL列表（每行一个）：", 
                font=(CHINESE_FONT, 12)).pack(anchor="w", padx=10)
        self.url_text = scrolledtext.ScrolledText(root, height=8, font=(CHINESE_FONT, 10))
        self.url_text.pack(fill="both", expand=True, padx=10, pady=5)
        
        # 控制按钮
        btn_frame = tk.Frame(root)
        btn_frame.pack(fill="x", padx=10, pady=5)
        
        tk.Button(btn_frame, text="导入URL文件", command=self.import_urls,
                 font=(CHINESE_FONT, 11), bg="#3498db", fg="white").pack(side="left", padx=5)
        tk.Button(btn_frame, text="选择保存目录", command=self.choose_dir,
                 font=(CHINESE_FONT, 11), bg="#3498db", fg="white").pack(side="left", padx=5)
        
        self.dir_label = tk.Label(btn_frame, text="保存目录：未选择", 
                                 font=(CHINESE_FONT, 10), fg="#7f8c8d")
        self.dir_label.pack(side="left", padx=10)
        
        self.save_dir = ""
        
        # 进度显示
        tk.Label(root, text="下载进度：", font=(CHINESE_FONT, 12)).pack(anchor="w", padx=10)
        self.progress = ttk.Progressbar(root, mode="determinate")
        self.progress.pack(fill="x", padx=10, pady=5)
        
        self.status_label = tk.Label(root, text="就绪", font=(CHINESE_FONT, 11), fg="#27ae60")
        self.status_label.pack(anchor="w", padx=10)
        
        # 日志区
        tk.Label(root, text="下载日志：", font=(CHINESE_FONT, 12)).pack(anchor="w", padx=10)
        self.log_text = scrolledtext.ScrolledText(root, height=10, font=(CHINESE_FONT, 9))
        self.log_text.pack(fill="both", expand=True, padx=10, pady=5)
        
        # 开始/停止按钮
        self.start_btn = tk.Button(root, text="开始下载", command=self.start_download,
                                  font=(CHINESE_FONT, 12, "bold"), bg="#27ae60", fg="white",
                                  width=15, height=2)
        self.start_btn.pack(pady=10)
        
    def import_urls(self):
        file_path = filedialog.askopenfilename(filetypes=[("文本文件", "*.txt"), ("所有文件", "*.*")])
        if file_path:
            with open(file_path, 'r', encoding='utf-8') as f:
                urls = f.read()
            self.url_text.delete("1.0", tk.END)
            self.url_text.insert("1.0", urls)
            self.log(f"已导入 {len(urls.strip().split(chr(10)))} 个URL")
    
    def choose_dir(self):
        dir_path = filedialog.askdirectory()
        if dir_path:

💡 适用场景

办公自动化、数据分析、快速原型开发