我试图使用Python处理一些PDF表单,这些表单是使用Adobe Acrobat Reader填写并签名的。
我试过:
我可以继续寻找和尝试图书馆,但我希望有人已经有一个有效的解决方案。
更新:根据史蒂文的回答,我查看了pdfminer,它做得很好。
from argparse import ArgumentParser
import pickle
import pprint
from pdfminer.pdfparser import PDFParser, PDFDocument
from pdfminer.pdftypes import resolve1, PDFObjRef
def load_form(filename):
"""Load pdf form contents into a nested list of name/value tuples"""
with open(filename, 'rb') as file:
parser = PDFParser(file)
doc = PDFDocument()
parser.set_document(doc)
doc.set_parser(parser)
doc.initialize()
return [load_fields(resolve1(f)) for f in
resolve1(doc.catalog['AcroForm'])['Fields']]
def load_fields(field):
"""Recursively load form fields"""
form = field.get('Kids', None)
if form:
return [load_fields(resolve1(f)) for f in form]
else:
# Some field types, like signatures, need extra resolving
return (field.get('T').decode('utf-16'), resolve1(field.get('V')))
def parse_cli():
"""Load command line arguments"""
parser = ArgumentParser(description='Dump the form contents of a PDF.')
parser.add_argument('file', metavar='pdf_form',
help='PDF Form to dump the contents of')
parser.add_argument('-o', '--out', help='Write output to file',
default=None, metavar='FILE')
parser.add_argument('-p', '--pickle', action='store_true', default=False,
help='Format output for python consumption')
return parser.parse_args()
def main():
args = parse_cli()
form = load_form(args.file)
if args.out:
with open(args.out, 'w') as outfile:
if args.pickle:
pickle.dump(form, outfile)
else:
pp = pprint.PrettyPrinter(indent=2)
file.write(pp.pformat(form))
else:
if args.pickle:
print pickle.dumps(form)
else:
pp = pprint.PrettyPrinter(indent=2)
pp.pprint(form)
if __name__ == '__main__':
main()
您应该可以使用pdfminer来完成这项工作,但这需要深入研究pdfminer的内部,了解pdf格式(当然是wrt格式,也需要了解pdf的内部结构,如“字典”和“间接对象”)。
这个例子可能会帮助您(我认为它只适用于简单的情况,没有嵌套字段等…)
编辑:忘记提及:如果需要提供密码,请将其传递给
doc.initialize()
PythonPyPDF2包(pyPdf的后续版本)非常方便:
那么
ff
是一个包含所有相关表单信息的dict
。Python3.6+:
pip install PyPDF2
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