Docin document downloader

docin-dl.py

###############################################################################
#
# Docin document downloader
#
# Valid as of 2022-12-13
#
###############################################################################
import argparse
import os
from types import SimpleNamespace
import urllib.request

conf = SimpleNamespace(
    docin_pid = 0,
    output_dir = ""
)

def download_image(pid):
    i = 0
    while True:
        i += 1
        try:
            urllib.request.urlretrieve(
                "http://211.147.220.164/index.jsp?file={}&pageno={}".format(pid, i),
                os.path.join(conf.output_dir, "{}.png".format(i))
            )
        except urllib.error.HTTPError:
            break
        else:
            print("Page", i, "saved.")

if __name__ == "__main__":
    # Parse the arguments
    parser = argparse.ArgumentParser()

    parser.add_argument("docin_pid", type=str, help="The number after \"p-\" in docin url")
    parser.add_argument("output_dir", type=str, help="The output directory")

    args = parser.parse_args()

    conf.docin_pid = args.docin_pid
    conf.output_dir = args.output_dir

    # Do the work
    download_image(conf.docin_pid)

https://www.docin.com/p-4780561796.html

这个链接没法使用，有办法吗？