Python实现修改PDF文件内部属性值

import PyPDF2

def modify_pdf_metadata(input_path, output_path, metadata):
    # 读取原始PDF文件
    with open(input_path, 'rb') as file:
        reader = PyPDF2.PdfReader(file)
        writer = PyPDF2.PdfWriter()

        # 复制所有页面到写入器
        for page in reader.pages:
            writer.add_page(page)

        # 获取原始元数据并更新
        original_metadata = reader.metadata
        writer.add_metadata({
            '/Title': metadata.get('title', ''),
            '/Author': metadata.get('author', ''),
            '/Subject': metadata.get('subject', ''),
            '/Keywords': metadata.get('keywords', ''),
            # 可以添加更多元数据字段
        })

        # 写入新的PDF文件
        with open(output_path, 'wb') as output_file:
            writer.write(output_file)

# 使用示例
metadata = {
    'title': '新标题',
    'author': '新作者',
    'subject': '新主题',
    'keywords': '关键词1,关键词2'
}

modify_pdf_metadata('input.pdf', 'output.pdf', metadata)

# 使用pdftk（需要先安装）
pdftk input.pdf dump_data output metadata.txt  # 导出元数据到文本文件
# 编辑metadata.txt文件中的属性值
pdftk input.pdf update_info metadata.txt output output.pdf  # 更新元数据

# 使用exiftool（需要先安装）
exiftool -Title="新标题" -Author="新作者" -Subject="新主题" input.pdf -o output.pdf

# -*- encoding=utf-8 -*-
import os
import time
def get_file_time(filename):
filename = os.path.abspath(filename)
create_time = os.path.getctime(filename) # 创建时间
print('old create time:{}'.format(time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(create_time))))
update_time = os.path.getmtime(filename) # 修改时间
print('old update time:{}'.format(time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(update_time))))
access_time = os.path.getatime(filename) # 访问时间
print('old access time:{}'.format(time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(access_time))))
return create_time, update_time, access_time
if __name__ == '__main__':
get_file_time('E:/a.txt')

# -*- encoding=utf-8 -*-
import os
import time
def set_file_time(filename, updatetime, access_time):
# 先传修改时间，再传访问时间
filename = os.path.abspath(filename)
new_updatetime = time.mktime(time.strptime(updatetime, '%Y-%m-%d %H:%M:%S'))
new_access_time = time.mktime(time.strptime(access_time, '%Y-%m-%d %H:%M:%S'))
os.utime(filename, (new_access_time, new_updatetime))
if __name__ == '__main__':
set_file_time('E:/a.txt', '2018-01-08 10:50:20', '2019-07-15 04:03:01')

# -*- encoding=utf-8 -*-
import os
import time
def get_file_time(filename):
filename = os.path.abspath(filename)
# 创建时间
create_time = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(os.path.getctime(filename)))
# 修改时间
update_time = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(os.path.getmtime(filename)))
# 访问时间
access_time = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(os.path.getatime(filename)))
return create_time, update_time, access_time
def set_file_time(filename, updatetime, access_time):
# 先传修改时间，再传访问时间
filename = os.path.abspath(filename)
new_update_time = time.mktime(time.strptime(updatetime, '%Y-%m-%d %H:%M:%S'))
new_access_time = time.mktime(time.strptime(access_time, '%Y-%m-%d %H:%M:%S'))
os.utime(filename, (new_access_time, new_update_time))
def debug():
create_time, update_time, access_time = get_file_time('E:/a.txt')
set_file_time('E:/a.txt', update_time, access_time)
get_file_time('E:/a.txt')
if __name__ == '__main__':
debug()

import os
import time
from pywintypes import Time # 可以忽视这个 Time 报错(运行程序还是没问题的)
from win32con import FILE_FLAG_BACKUP_SEMANTICS
from win32con import FILE_SHARE_WRITE
from win32file import CloseHandle
from win32file import CreateFile
from win32file import GENERIC_WRITE
from win32file import OPEN_EXISTING
from win32file import SetFileTime
def modify_file_create_time(filename, create_time_str, update_time_str, access_time_str):
try:
format_str = "%Y-%m-%d %H:%M:%S" # 时间格式
# f = CreateFile(filename, GENERIC_READ | GENERIC_WRITE, 0, None, OPEN_EXISTING, 0, 0)
f = CreateFile(filename, GENERIC_WRITE, FILE_SHARE_WRITE, None, OPEN_EXISTING,
FILE_FLAG_BACKUP_SEMANTICS, 0)
create_time = Time(time.mktime(time.strptime(create_time_str, format_str)))
update_time = Time(time.mktime(time.strptime(update_time_str, format_str)))
access_time = Time(time.mktime(time.strptime(access_time_str, format_str)))
SetFileTime(f, create_time, update_time, access_time)
CloseHandle(f)
print('update file time success:{}/{}/{}'.format(create_time_str, update_time_str,
access_time_str))
except Exception as e:
print('update file time fail:{}'.format(e))
if __name__ == '__main__':
cTime = "2019-12-13 21:51:02" # 创建时间
mTime = "2019-02-02 00:01:03" # 修改时间
aTime = "2019-02-02 00:01:04" # 访问时间
fName = r"a.txt" # 可以是文件也可以是文件夹
print(os.path.isdir(fName))
modify_file_create_time(fName, cTime, mTime, aTime)