如何使用 pdfminer 6 获取可编辑字段的页码

Question

我按照此答案中的示例从 PDF 文档中获取可编辑字段值：

How to extract PDF fields from a filled out form in Python?

对于每个字段，我得到一个如下所示的数据结构。但该列表包括所有页面中的所有字段。如何确定每个字段所在的页面？在调试器中，我尝试查看 PDFObjRef 的“AP”和“P”项目，但这并没有引导我到任何地方。

'AP' = {dict: 1} {'N': <PDFObjRef:1947>}
'DA' = {bytes: 23} b'0 0 0 rg /ArialMT 10 Tf'
'F' = {int} 4
'FT' = {PSLiteral} /'Tx'
'M' = {bytes: 23} b"D:20200129121854-06'00'"
'MK' = {dict: 0} {}
'P' = {PDFObjRef} <PDFObjRef:1887>
'Rect' = {list: 4} [36.3844, 28.5617, 254.605, 55.1097]
'StructParent' = {int} 213
'Subtype' = {PSLiteral} /'Widget'
'T' = {bytes: 12} b'CustomerName'
'TU' = {bytes: 13} b'Customer Name'
'Type' = {PSLiteral} /'Annot'
'V' = {bytes: 21} b'Ball-Mart Stores, Inc.'

TIA

Answer 1

同样的问题，我花了 2 个小时才通过查看 PDF 找到 page.annots 的想法。

它适用于 PyPDF2。 doc 之前由 doc = open('sample.pdf') 初始化

idtopg = {}
pge = 0
for page in PDFPage.create_pages(doc):
    if page.annots:
        for annot in page.annots:
            por = PDFObjRef.resolve(annot)
            aid = por['T'].decode("utf-8")
            idtopg[aid] = pge
    pge += 1

现在看看你的“T”。此处生成的 dict 为您提供每个 'T' 的页面

myfieldid = thenameofyourfield['T'].decode('utf-8')
print("The field id {0} in on page {1}".format(myfieldid, idtopg[myfieldid])

Answer 2

通过执行以下操作，我能够获取字段的页码：

from pdfminer.pdfparser import PDFParser
from pdfminer.pdfdocument import PDFDocument
from pdfminer.pdftypes import resolve1

fp = open(PdfUtility.resource_path(filename), 'rb')
parser = PDFParser(fp)
doc = PDFDocument(parser)
kids = resolve1(doc.catalog['Pages'])['Kids']
page = 0
field_list = []
for kid in kids:
    page += 1
    kid_fields = resolve1(resolve1(kid)['Annots'])
    for i in kid_fields:
        field_dict = {}
        field = resolve1(i)
        name, position = field.get('T'), field.get('Rect')
        if name:
            field_dict['name'] = name.decode('utf-8')
            field_dict['page'] = page
            field_dict['position'] = position
            print(field_dict)
            field_list.append(field_dict)