依赖安装：pip install PyPDF2
具体代码：
import os
from PyPDF2 import PdfWriter, PdfReader
def get_reader(filename, password):
try:
old_file = open(filename, 'rb')
except Exception as err:
print('文件打开失败！' + str(err))
return None
# 创建读实例
pdf_reader = PdfReader(old_file, strict=False)
# 解密操作
if pdf_reader.is_encrypted:
if password is None:
print('%s文件被加密，需要密码！' % filename)
return None
else:
if pdf_reader.decrypt(password) != 1:
print('%s密码不正确！' % filename)
return None
if old_file in locals():
old_file.close()
return pdf_reader
def decrypt_pdf(filename, password, decrypted_folder):
"""
将加密的文件进行解密，并生成一个无需密码的pdf文件
:param filename: 原先加密的pdf文件
:param password: 对应的密码
:param decrypted_folder: 解密后放置文件的文件夹路径
:return:
"""
# 生成一个Reader和Writer
pdf_reader = get_reader(filename, password)
if pdf_reader is None:
return
pdf_writer = PdfWriter()
for page in pdf_reader.pages:
pdf_writer.add_page(page)
# 获取解密后的文件名
file_name, _ = os.path.splitext(filename)
if decrypted_folder is not None:
decrypted_filepath = os.path.join(decrypted_folder, os.path.basename(file_name) + ".pdf")
else:
print('生成文件失败，请给出解密后放置文件夹')
return
# 写入新文件
with open(decrypted_filepath, 'wb') as decrypted_file:
pdf_writer.write(decrypted_file)
print('解密成功' + decrypted_filepath)
# 获取文件夹中的pdf文件路径
def get_pdf_paths(folder_path):
pdf_paths = []
for root, _, files in os.walk(folder_path):
for file in files:
if file.endswith(".pdf"):
pdf_path = os.path.join(root, file)
pdf_paths.append(pdf_path)
return pdf_paths
pdf_path = input('请输入要解密的pdf或含pdf文件夹路径：')
# pdf_path = '文件夹或文件路径'
password = input('请输入密码：')
# password = '密码'
decrypted_folder = input('请输入解密文件夹：')
# decrypted_folder = '解密文件夹'
if os.path.isdir(pdf_path):
pdf_paths = get_pdf_paths(pdf_path)
for path in pdf_paths:
decrypt_pdf(path, password, decrypted_folder) # 修改此处，传递解密后文件存放的文件夹路径
else:
_, extension = os.path.splitext(pdf_path)
if extension.lower() == '.pdf':
decrypt_pdf(pdf_path, password, decrypted_folder)
else:
print('文件非pdf')
解密成功截图：
