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PyPDF2 编码问题 PyPDF2.utils.PdfReadError Illegal character in Name Object

参考资料：https://github.com/mstamy2/PyPDF2/issues/438

使用 PyPDF2 做合并 PDF 文件时报错如下：

Traceback (most recent call last): File "D:\projects\myproject\venv\lib\site-packages\PyPDF2\generic.py", line 484, in readFromStream return NameObject(name.decode('utf-8')) UnicodeDecodeError: 'utf-8' codec can't decode byte 0xcb in position 8: invalid continuation byte During handling of the above exception, another exception occurred: Traceback (most recent call last): File "D:\projects\myproject\apps\backstage\views\busi_contract_manage_view.py", line 703, in post merge_pdf_result = merge_pdf(final_files, pdf_path) File "D:\projects\myproject\apps\utils\doc_convert_util.py", line 86, in merge_pdf pdf_writer.write(new_file) File "D:\projects\myproject\venv\lib\site-packages\PyPDF2\pdf.py", line 482, in write self._sweepIndirectReferences(externalReferenceMap, self._root) File "D:\projects\myproject\venv\lib\site-packages\PyPDF2\pdf.py", line 571, in _sweepIndirectReferences self._sweepIndirectReferences(externMap, realdata) File "D:\projects\myproject\venv\lib\site-packages\PyPDF2\pdf.py", line 547, in _sweepIndirectReferences value = self._sweepIndirectReferences(externMap, value) File "D:\projects\myproject\venv\lib\site-packages\PyPDF2\pdf.py", line 571, in _sweepIndirectReferences self._sweepIndirectReferences(externMap, realdata) File "D:\projects\myproject\venv\lib\site-packages\PyPDF2\pdf.py", line 547, in _sweepIndirectReferences value = self._sweepIndirectReferences(externMap, value) File "D:\projects\myproject\venv\lib\site-packages\PyPDF2\pdf.py", line 556, in _sweepIndirectReferences value = self._sweepIndirectReferences(externMap, data[i]) File "D:\projects\myproject\venv\lib\site-packages\PyPDF2\pdf.py", line 571, in _sweepIndirectReferences self._sweepIndirectReferences(externMap, realdata) File "D:\projects\myproject\venv\lib\site-packages\PyPDF2\pdf.py", line 547, in _sweepIndirectReferences value = self._sweepIndirectReferences(externMap, value) File "D:\projects\myproject\venv\lib\site-packages\PyPDF2\pdf.py", line 547, in _sweepIndirectReferences value = self._sweepIndirectReferences(externMap, value) File "D:\projects\myproject\venv\lib\site-packages\PyPDF2\pdf.py", line 547, in _sweepIndirectReferences value = self._sweepIndirectReferences(externMap, value) File "D:\projects\myproject\venv\lib\site-packages\PyPDF2\pdf.py", line 577, in _sweepIndirectReferences newobj = data.pdf.getObject(data) File "D:\projects\myproject\venv\lib\site-packages\PyPDF2\pdf.py", line 1611, in getObject retval = readObject(self.stream, self) File "D:\projects\myproject\venv\lib\site-packages\PyPDF2\generic.py", line 66, in readObject return DictionaryObject.readFromStream(stream, pdf) File "D:\projects\myproject\venv\lib\site-packages\PyPDF2\generic.py", line 579, in readFromStream value = readObject(stream, pdf) File "D:\projects\myproject\venv\lib\site-packages\PyPDF2\generic.py", line 60, in readObject return NameObject.readFromStream(stream, pdf) File "D:\projects\myproject\venv\lib\site-packages\PyPDF2\generic.py", line 492, in readFromStream raise utils.PdfReadError("Illegal character in Name Object") PyPDF2.utils.PdfReadError: Illegal character in Name Object

找到对应的报错文件 

File "D:\projects\myproject\venv\lib\site-packages\PyPDF2\generic.py", line 484

第484行 原代码：

try: return NameObject(name.decode('utf-8')) except (UnicodeEncodeError, UnicodeDecodeError) as e: # Name objects should represent irregular characters # with a '#' followed by the symbol's hex number if not pdf.strict: warnings.warn("Illegal character in Name Object", utils.PdfReadWarning) return NameObject(name) else: raise utils.PdfReadError("Illegal character in Name Object")

在 except 中加入代码 

return NameObject(name.decode('gbk'))

修改后

try: return NameObject(name.decode('utf-8')) except (UnicodeEncodeError, UnicodeDecodeError) as e: try: return NameObject(name.decode('gbk')) except (UnicodeEncodeError, UnicodeDecodeError) as e: # Name objects should represent irregular characters # with a '#' followed by the symbol's hex number if not pdf.strict: warnings.warn("Illegal character in Name Object", utils.PdfReadWarning) return NameObject(name) else: raise utils.PdfReadError("Illegal character in Name Object")

修改后仍会报错，需要修改修改另一处

Lib/site-packages/PyPDF2/utils.py 第238行

原代码

r = s.encode('latin-1') if len(s) < 2: bc[s] = r return r

 修改后代码：

try: r = s.encode('latin-1') except Exception as e: r = s.encode('utf-8') if len(s) < 2: bc[s] = r return r

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