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Colin Lightfoot's questions

Martin Hope
Colin Lightfoot
Asked: 2023-09-17 10:03:23 +0800 CST
  • 5

我按照有关如何使用 PyPDF2 的指南进行操作，并且文本字段已填充。唯一的问题是，我在文本字段上看到蓝色覆盖层，并且仅当我单击蓝色覆盖层时才会显示其下方写的文本，请看这张图片：

如果用户在该字段中键入，则显示“全名”字段。如果我单击蓝色覆盖层以显示 PyPDF2 写入的文本，则“全名”字段是完整的名字字段，而“全名”字段是如果我不单击该字段，则 PyPDF2 写入文本字段的外观。无论如何，是否可以使用 PyPDF2 或相关库让中间和右侧的文本字段看起来像左侧的文本字段？

我的代码如下：

#!/usr/bin/python3

filename = "file.pdf"

from PyPDF2 import PdfReader, PdfWriter
from PyPDF2.generic import BooleanObject, NameObject, IndirectObject

def set_need_appearances_writer(writer):
    
    try:
        catalog = writer._root_object
        # get the AcroForm tree and add "/NeedAppearances attribute
        if "/AcroForm" not in catalog:
            writer._root_object.update(
                {
                    NameObject("/AcroForm"): IndirectObject(
                        len(writer._objects), 0, writer
                    )
                }
            )

        need_appearances = NameObject("/NeedAppearances")
        writer._root_object["/AcroForm"][need_appearances] = BooleanObject(True)
        return writer

    except Exception as e:
        print("set_need_appearances_writer() catch : ", repr(e))
        return writer

reader = PdfReader(filename, "rb")
if "/AcroForm" in reader.trailer["/Root"]:
    reader.trailer["/Root"]["/AcroForm"].update(
        {NameObject("/NeedAppearances"): BooleanObject(True)}
    )

blankTextFields = reader.get_form_text_fields()

blankTextFieldsKeys = blankTextFields.keys()

pdfFillerDict = {}
for key in blankTextFieldsKeys:
    
  if "BarCode" not in key:
    value = input("What is your " + key[:-3] + "? ")
    pdfFillerDict.update({key: value})

writer = PdfWriter()

set_need_appearances_writer(writer)
if "/AcroForm" in writer._root_object:
    writer._root_object["/AcroForm"].update(
        {NameObject("/NeedAppearances"): BooleanObject(True)}
    )

writer.add_page(reader.pages[0])

print(blankTextFields)
print(pdfFillerDict)
writer.update_page_form_field_values(
  writer.pages[0], pdfFillerDict
)

with open("filled-out.pdf", "wb") as output_stream:
    writer.write(output_stream)

output_stream.close()
python-3.x