系统:
Python 3.6
Windows 10
目标:
使用Adobe Acrobat API使用“另存为”功能将pdf保存为jpeg格式。
注意:就我的目的而言,我不能使用Wand或其他软件包。
资源:
当前代码:
import winerror
import win32com
from win32com.client.dynamic import Dispatch, ERRORS_BAD_CONTEXT
ERRORS_BAD_CONTEXT.append(winerror.E_NOTIMPL)
my_dir = r"path\\to\\example\\"
my_pdf = "example.pdf"
os.chdir(my_dir)
src = os.path.abspath(my_pdf)
pdDoc = Dispatch("AcroExch.PDDoc")
pdDoc.Open(src)
jsObject = pdDoc.GetJSObject()
jsObject.SaveAs(os.path.abspath('./output_example.jpeg'), "com.adobe.acrobat.jpeg")
问题:
jsObject为空
导致以下回溯:
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
<ipython-input-26-9c82c454eb2a> in <module>()
----> 1 jsObject.SaveAs(os.path.abspath('./output_example.jpeg'), "com.adobe.acrobat.jpeg")
AttributeError: 'NoneType' object has no attribute 'SaveAs'
错误文档说明:
GetJSObject
Gets a dual interface to the JavaScript object associated with the PDDoc. This allows automation clients full access to both built-in and user-defined JavaScript methods available in the document. For more information on working with JavaScript, see Developing Applications Using Interapplication Communication.
Syntax
LDispatch* GetJSObject();
Returns
The interface to the JavaScript object if the call succeeded, NULL otherwise.
发布于 2018-08-04 02:59:39
考虑在其中一个链接显示其用法时与AvDoc对象交互,然后从它构建pdDoc和jsObject。请确保还将进程包装在try/except/finally
块中,以便有效地释放COM对象,而不管是否出现错误。
import os
import winerror
from win32com.client.dynamic import Dispatch, ERRORS_BAD_CONTEXT
ERRORS_BAD_CONTEXT.append(winerror.E_NOTIMPL)
my_dir = r"C:\\path\\to\\example\\"
my_pdf = "example.pdf"
os.chdir(my_dir)
src = os.path.abspath(my_pdf)
try:
AvDoc = Dispatch("AcroExch.AVDoc")
if AvDoc.Open(src, ""):
pdDoc = AvDoc.GetPDDoc()
jsObject = pdDoc.GetJSObject()
jsObject.SaveAs(os.path.join(my_dir, 'output_example.jpeg'), "com.adobe.acrobat.jpeg")
except Exception as e:
print(str(e))
finally:
AvDoc.Close(True)
jsObject = None
pdDoc = None
AvDoc = None
https://stackoverflow.com/questions/51530305
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