来源:https://zhuanlan.zhihu.com/p/81852170
主要功能
(1) 设定站点名称； (2) 设定最大下载页； (3) 设定最大下载层； (4) 设定是否下载多媒体文件（图片）； (5) 设定是否下载其他站点网页； (6) 图形化显示。
为防止链接失效
# -*- coding: utf-8 -*-
import os
import os.path
import requests
import urllib
import tkinter as tk
import tkinter.messagebox
from bs4 import BeautifulSoup, SoupStrainer
BRANCH = '├─'
LAST_BRANCH = '└─'
TAB = '│ '
EMPTY_TAB = ' '
'''
variables:
input_website
input_max_pages
input_max_layers
'''
class TreeNode(object):
__slots__ = ("value", "children", "layer", "directory", "number")
def __init__(self, value, layer, directory, number):
self.value = value
self.children = []
self.layer = layer
self.directory = directory
self.number = number
def get_value(self):
return self.value
def get_layer(self):
return self.layer
def get_directory(self):
return self.directory
def get_number(self):
return self.number
def insert_child(self, node):
self.children.append(node)
def pop_child(self):
return self.children.pop(0)
layer_count = 1
website_count = 1
treenode_queue = []
# download the given website, generate html files and a readme file
def download_website():
print(input_website.get(), input_max_pages.get(), input_max_layers.get(),
btn_Group1.get(), btn_Group2.get())
if not judge():
print("fail to download")
else:
print("chect correct")
# prepare for the result filefolder
if not os.path.exists(r'D:\Download_Website'):
os.makedirs(r'D:\Download_Website')
download_img = False
if (int(btn_Group1.get()) == 1):
download_img = True
# start to download websites
global layer_count
global website_count
root_treenode = TreeNode(
input_website.get(), layer_count,
os.path.join(r"D:\Download_Website", str(website_count)),
website_count)
treenode_queue.append(root_treenode)
print("----------第" + str(layer_count) + "层----------")
# BFS, using a queue
while treenode_queue:
temp = treenode_queue.pop(0)
print(temp.value, temp.directory, temp.number)
if not os.path.exists(temp.directory):
os.makedirs(temp.directory)
re = requests.get(temp.get_value())
re.encoding = "utf-8"
with open(
os.path.join(temp.directory, str(temp.number)) + ".html",
"w+",
encoding="utf-8") as html_file:
html_file.write(re.text)
if download_img:
soup = BeautifulSoup(
re.text, "html.parser", parse_only=SoupStrainer('img'))
count = 1
print("正在下载", temp.value, "的图片... ...")
for img in soup:
if not (img["src"] == ""):
if str(img["src"][:2]) == r"//":
img["src"] = "https:" + img["src"]
img_dir = os.path.join(temp.directory, str(count))
if img["src"][-3:] == "png":
urllib.request.urlretrieve(img["src"],
img_dir + ".png")
elif img["src"][-3:] == "gif":
urllib.request.urlretrieve(img["src"],
img_dir + ".gif")
elif img["src"][-3:] == "jpg": # jpg and other formats
urllib.request.urlretrieve(img["src"],
img_dir + ".jpg")
else: # images which don't has a suffix
print("Failed :", img["src"])
count = count + 1
if (btn_Group2.get() == 2) or (int(
input_max_pages.get()) == 1) or (int(
input_max_layers.get()) == 1):
break
if layer_count >= int(input_max_layers.get()) + 1:
download_website_of_queue(*treenode_queue)
with open(r"D:\Download_Website\README.txt",
"w+") as readme_file:
readme_file.write(get_dir_list(r"D:\Download_Website"))
return
soup = BeautifulSoup(
re.text, "html.parser", parse_only=SoupStrainer('a'))
layer_count = layer_count + 1
print("----------第" + str(layer_count) + "层----------")
for each in soup:
if each.has_attr("href") and each["href"][:4] == "http":
website_count = website_count + 1
print("第" + str(website_count) + "个网站/第" +
str(layer_count) + "层：" + each["href"])
anode = TreeNode(
each["href"], layer_count,
os.path.join(temp.directory, str(website_count)),
website_count)
temp.insert_child(anode)
treenode_queue.append(anode)
if website_count >= int(input_max_pages.get()):
download_website_of_queue(*treenode_queue)
# finally generate README.txt file
with open(r"D:\Download_Website\README.txt",
"w+") as readme_file:
readme_file.write(
get_dir_list(r"D:\Download_Website"))
return
# check whether input_website is valid
def judge():
if (not input_max_pages.get().isdigit()) or (
not 0 < int(input_max_pages.get()) < 51):
tk.messagebox.showwarning(title='注意', message='最大下载页的数目为1-50，请重试 :(')
return False
elif (not input_max_pages.get().isdigit()) or (
not 0 < int(input_max_layers.get()) < 11):
tk.messagebox.showwarning(title='注意', message='最大下载层的数目为1-10，请重试 :(')
return False
else:
try:
con = requests.get(input_website.get())
except requests.RequestException:
tk.messagebox.showerror(title='注意', message='请求出错，请重试 :(')
except requests.ConnectionError:
tk.messagebox.showerror(title='注意', message='连接出错，请重试 :(')
except Exception:
tk.messagebox.showerror(title='注意', message='出错，请重试 :(')
else:
print("status_code:" + str(con.status_code))
if con.status_code == 200:
return True
else:
return False
def download_website_of_queue(*args):
download_img = False
if (int(btn_Group1.get()) == 1):
download_img = True
for temp in args:
re = requests.get(temp.get_value())
re.encoding = "utf-8"
if not os.path.exists(temp.directory):
os.makedirs(temp.directory)
with open(
os.path.join(temp.directory, str(temp.number)) + ".html",
"w+",
encoding="utf-8") as html_file:
html_file.write(re.text)
if download_img:
soup = BeautifulSoup(
re.text, "html.parser", parse_only=SoupStrainer('img'))
count = 1
print("正在下载", temp.value, "的图片... ...")
for img in soup:
if not (img["src"] == ""):
if str(img["src"][:2]) == r"//":
img["src"] = "https:" + img["src"]
img_dir = os.path.join(temp.directory, str(count))
if img["src"][-3:] == "png":
urllib.request.urlretrieve(img["src"],
img_dir + ".png")
elif img["src"][-3:] == "gif":
urllib.request.urlretrieve(img["src"],
img_dir + ".gif")
elif img["src"][-3:] == "jpg": # jpg and other formats
urllib.request.urlretrieve(img["src"],
img_dir + ".jpg")
else: # images which don't has a suffix
print("Failed :", img["src"])
count = count + 1
# open the result file folder in D:
def open_file():
if not os.path.exists('D:/Download_Website'):
os.makedirs('D:/Download_Website')
os.system((r"start explorer D:\Download_Website"))
def get_dir_list(path, placeholder=''):
folder_list = [
folder for folder in os.listdir(path)
if os.path.isdir(os.path.join(path, folder))
]
file_list = [
file for file in os.listdir(path)
if os.path.isfile(os.path.join(path, file))
]
result = ''
for folder in folder_list[:-1]:
result += placeholder + BRANCH + folder + '\n'
result += get_dir_list(os.path.join(path, folder), placeholder + TAB)
if folder_list:
result += placeholder + (BRANCH if file_list else
LAST_BRANCH) + folder_list[-1] + '\n'
result += get_dir_list(
os.path.join(path, folder_list[-1]),
placeholder + (TAB if file_list else EMPTY_TAB))
for file in file_list[:-1]:
result += placeholder + BRANCH + file + '\n'
if file_list:
result += placeholder + LAST_BRANCH + file_list[-1] + '\n'
return result
root = tk.Tk()
root.title("网站下载工具 by:cde")
root.geometry('300x360')
tk.Label(
root, text='要下载的网址：').grid(
row=1, column=1, columnspan=2, padx=10, pady=10)
input_website = tk.Entry(root)
input_website.grid(row=1, column=3, columnspan=2)
tk.Label(
root, text='最大下载页：').grid(
row=2, column=1, columnspan=2, sticky=tk.W, padx=10, pady=10)
input_max_pages = tk.Spinbox(root, from_=1, to=50)
input_max_pages.grid(row=2, column=3, columnspan=2)
tk.Label(
root, text='最大下载层：').grid(
row=3, column=1, columnspan=2, sticky=tk.W, padx=10, pady=10)
input_max_layers = tk.Spinbox(root, from_=1, to=10)
input_max_layers.grid(row=3, column=3, columnspan=2)
tk.Label(
root, text='下载多媒体文件：').grid(
row=4, column=1, columnspan=2, sticky=tk.W, padx=10, pady=10)
tk.Label(
root, text='下载其他网页：').grid(
row=5, column=1, columnspan=2, sticky=tk.W, padx=10, pady=10)
btn_Group1 = tk.IntVar()
btn_Group2 = tk.IntVar()
btn_Group1.set(2)
btn_Group2.set(2)
tk.Radiobutton(
root, variable=btn_Group1, text='是', value=1).grid(
row=4, column=3)
tk.Radiobutton(
root, variable=btn_Group1, text='否', value=2).grid(
row=4, column=4)
tk.Radiobutton(
root, variable=btn_Group2, text='是', value=1).grid(
row=5, column=3)
tk.Radiobutton(
root, variable=btn_Group2, text='否', value=2).grid(
row=5, column=4)
start_button = tk.Button(root, text=' 开始下载 ', command=download_website)
start_button.grid(row=7, column=1, columnspan=4, padx=10, pady=15, sticky=tk.S)
open_button = tk.Button(root, text=' 打开下载文件夹 ', command=open_file)
open_button.grid(row=8, column=1, columnspan=4, padx=10, pady=15, sticky=tk.S)
root.mainloop()
