Win32com 使用 Acrobat Pro X 将 PDF 保存为 XML > com_error "-2147467263, '未实现'" [重复]

Question

• Python 2.7 (r27:82525, Jul 4 2010, 09:01:59) [MSC v.1500 32 bit (Intel)] on win32
• Windows XP SP3
• Python 2.7 pywin32-218
• Adobe Acrobat X 10.0.0

我想使用 Python 自动化 Acrobat Pro 以将 PDF 导出为 XML。我已经使用正在运行的程序中的“另存为”对话框手动尝试过，现在想通过 Python 脚本来完成。我已经阅读了很多页面，包括 Adob​​e SDK、SDK 论坛、VB 论坛的部分内容，但运气不佳。

我在这里阅读了 Blish 的问题："Not implemented" Exception when using pywin32 to control Adobe Acrobat

还有这个页面：timgolden python/win32_how_do_i/generate-a-static-com-proxy.html

我错过了一些东西。我的代码是：

import win32com.client
import win32com.client.makepy

win32com.client.makepy.GenerateFromTypeLibSpec('Acrobat')
adobe = win32com.client.DispatchEx('AcroExch.App')
avDoc = win32com.client.DispatchEx('AcroExch.AVDoc')
avDoc.Open('C:\Documents and Settings\PC\Desktop\a_PDF.pdf', 'C:\Documents and Settings\PC\Desktop')
pdDoc = avDoc.GetPDDoc()
jObject = pdDoc.GetJSObject()
jObject.SaveAs('C:\Documents and Settings\PC\Desktop\a_PDF.xml', "com.adobe.acrobat.xml-1-00")

完整的错误是：

Traceback (most recent call last):
  File "<pyshell#31>", line 1, in <module>
    jObject.SaveAs('C:\Documents and Settings\PC\Desktop\a_PDF.xml', "com.adobe.acrobat.xml-1-00")
  File "C:\Python27\lib\site-packages\win32com\client\dynamic.py", line 511, in __getattr__
    ret = self._oleobj_.Invoke(retEntry.dispid,0,invoke_type,1)
com_error: (-2147467263, 'Not implemented', None, None)

我猜它与 make.py 有关，但我不明白如何在我的代码中实现它。

我从我的代码中提取了这一行并在运行时遇到了同样的错误：

win32com.client.makepy.GenerateFromTypeLibSpec('Acrobat')

然后我将这两行从“DispatchEX”更改为“Dispatch”，同样的错误：

adobe = win32com.client.Dispatch('AcroExch.App')
avDoc = win32com.client.Dispatch('AcroExch.AVDoc')

当我自己运行 Dispatches 然后回调它们时，我得到：

>>> adobe = win32com.client.DispatchEx('AcroExch.App')
>>> adobe
<win32com.gen_py.Adobe Acrobat 10.0 Type Library.CAcroApp instance at 0x18787784>
>>> avDoc = win32com.client.Dispatch('AcroExch.AVDoc')
>>> avDoc
<win32com.gen_py.Adobe Acrobat 10.0 Type Library.CAcroAVDoc instance at 0x20365224>

这是否意味着我应该只调用一次 Dispatch？我拉了：

adobe = win32com.client.Dispatch('AcroExch.App')

得到了同样的错误。

这个 Adob​​e 网站说：

AVDoc    
Product availability: Acrobat, Reader
Platform availability: Macintosh, Windows, UNIX
Syntax
typedef struct _t_AVDoc* AVDoc;

A view of a PDF document in a window. There is one AVDoc per displayed document. Unlike a PDDoc, an AVDoc has a window associated with it.

• acrobat_sdk/9.1/Acrobat9_1_HTMLHelp/API_References/Acrobat_API_Reference/AV_Layer/AVDoc.html#AVDocSaveParams

PDDoc 页面显示：

A PDDoc object represents a PDF document. There is a correspondence between a PDDoc and an ASFile. Also, every AVDoc has an associated PDDoc, although a PDDoc may not be associated with an AVDoc.

• /9.1/Acrobat9_1_HTMLHelp/API_References/Acrobat_API_Reference/PD_Layer/PDDoc.html

我尝试了以下代码，也得到了同样的错误：

import win32com.client
import win32com.client.makepy

pdDoc = win32com.client.Dispatch('AcroExch.PDDoc')
pdDoc.Open('C:\Documents and Settings\PC\Desktop\a_PDF.pdf')
jObject = pdDoc.GetJSObject()
jObject.SaveAs('C:\Documents and Settings\PC\Desktop\a_PDF.xml', "com.adobe.acrobat.xml-1-00")

如果我改变同样的错误：

pdDoc = win32com.client.Dispatch('AcroExch.PDDoc')

到

pdDoc = win32com.client.gencache.EnsureDispatch('AcroExch.PDDoc')

喜欢这里：win32com.client.Dispatch works but not win32com.client.gencache.EnsureDispatch

Answer 1

user2993272，你快到了：只要多一行，你的代码应该可以完美运行。

我将尝试以与您的问题相同的精神来回答，并尽可能详细地为您提供。

This thread 是您正在寻找的解决方案的关键：https://mail.python.org/pipermail/python-win32/2002-March/000260.html

我承认该帖子不是最容易找到的（也许 Google 根据内容的年龄对其评分较低？）。

具体来说，应用this 的建议会让事情顺利进行：https://mail.python.org/pipermail/python-win32/2002-March/000265.html

为了完整起见，这段代码应该可以完成工作，并且不需要您手动修补 dynamic.py（sn-p 应该开箱即用）：

# gets all files under ROOT_INPUT_PATH with FILE_EXTENSION and tries to extract text from them into ROOT_OUTPUT_PATH with same filename as the input file but with INPUT_FILE_EXTENSION replaced by OUTPUT_FILE_EXTENSION
from win32com.client import Dispatch
from win32com.client.dynamic import ERRORS_BAD_CONTEXT

import winerror

# try importing scandir and if found, use it as it's a few magnitudes of an order faster than stock os.walk
try:
    from scandir import walk
except ImportError:
    from os import walk

import fnmatch

import sys
import os

ROOT_INPUT_PATH = None
ROOT_OUTPUT_PATH = None
INPUT_FILE_EXTENSION = "*.pdf"
OUTPUT_FILE_EXTENSION = ".txt"

def acrobat_extract_text(f_path, f_path_out, f_basename, f_ext):
    avDoc = Dispatch("AcroExch.AVDoc") # Connect to Adobe Acrobat

    # Open the input file (as a pdf)
    ret = avDoc.Open(f_path, f_path)
    assert(ret) # FIXME: Documentation says "-1 if the file was opened successfully, 0 otherwise", but this is a bool in practise?

    pdDoc = avDoc.GetPDDoc()

    dst = os.path.join(f_path_out, ''.join((f_basename, f_ext)))

    # Adobe documentation says "For that reason, you must rely on the documentation to know what functionality is available through the JSObject interface. For details, see the JavaScript for Acrobat API Reference"
    jsObject = pdDoc.GetJSObject()

    # Here you can save as many other types by using, for instance: "com.adobe.acrobat.xml"
    jsObject.SaveAs(dst, "com.adobe.acrobat.accesstext")

    pdDoc.Close()
    avDoc.Close(True) # We want this to close Acrobat, as otherwise Acrobat is going to refuse processing any further files after a certain threshold of open files are reached (for example 50 PDFs)
    del pdDoc

if __name__ == "__main__":
    assert(5 == len(sys.argv)), sys.argv # <script name>, <script_file_input_path>, <script_file_input_extension>, <script_file_output_path>, <script_file_output_extension>

    #$ python get.txt.from.multiple.pdf.py 'C:\input' '*.pdf' 'C:\output' '.txt'

    ROOT_INPUT_PATH = sys.argv[1]
    INPUT_FILE_EXTENSION = sys.argv[2]
    ROOT_OUTPUT_PATH = sys.argv[3]
    OUTPUT_FILE_EXTENSION = sys.argv[4]

    # tuples are of schema (path_to_file, filename)
    matching_files = ((os.path.join(_root, filename), os.path.splitext(filename)[0]) for _root, _dirs, _files in walk(ROOT_INPUT_PATH) for filename in fnmatch.filter(_files, INPUT_FILE_EXTENSION))

    # Magic piece of code that should get everything working for you!
    # patch ERRORS_BAD_CONTEXT as per https://mail.python.org/pipermail/python-win32/2002-March/000265.html
    global ERRORS_BAD_CONTEXT
    ERRORS_BAD_CONTEXT.append(winerror.E_NOTIMPL)

    for filename_with_path, filename_without_extension in matching_files:
        print "Processing '{}'".format(filename_without_extension)
        acrobat_extract_text(filename_with_path, ROOT_OUTPUT_PATH, filename_without_extension, OUTPUT_FILE_EXTENSION)

我已在 WinPython x64 2.7.6.3、Acrobat X Pro 上对此进行了测试