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April 28, 2021 12:29
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How to use pdfbox's PDFTextStripper class in Python.
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| #!/usr/bin/env python3 | |
| """ | |
| How to use pdfbox's PDFTextStripper class in Python. | |
| """ | |
| import pathlib | |
| import pkg_resources | |
| import re | |
| import urllib.request | |
| import appdirs | |
| import jpype | |
| import jpype.imports | |
| import numpy as np | |
| # Replace with path to pdfbox jar file: | |
| a = appdirs.AppDirs('python-pdfbox') | |
| cache_dir = pathlib.Path(a.user_cache_dir) | |
| file_list = list(cache_dir.glob('pdfbox-app-*.jar')) | |
| def f(s): | |
| v = re.search('pdfbox-app-([\w\.\-]+)\.jar', s.name).group(1) | |
| return pkg_resources.parse_version(v) | |
| jpype.addClassPath(sorted(file_list, key=f)[-1]) | |
| if not jpype.isJVMStarted(): | |
| jpype.startJVM(jpype.getDefaultJVMPath(), '-Djava.awt.headless=true', convertStrings=False) | |
| from java.awt.image import BufferedImage | |
| from java.io import File | |
| from org.apache.pdfbox.pdmodel import PDDocument | |
| from org.apache.pdfbox.text import PDFTextStripper | |
| def extract_text(in_file): | |
| """ | |
| Extract text of PDF file. | |
| Parameters | |
| ---------- | |
| in_file : str | |
| Path to input PDF file. | |
| Returns | |
| ------- | |
| text : str | |
| Extracted text. | |
| """ | |
| doc = PDDocument.load(File(in_file)) | |
| pdf_text_stripper = PDFTextStripper() | |
| text = pdf_text_stripper.getText(doc) | |
| return str(text) | |
| if __name__ == '__main__': | |
| import os | |
| import tempfile | |
| import urllib | |
| # Download sample multipage PDF: | |
| data = urllib.request.urlopen('https://researchtorevenue.files.wordpress.com/2015/04/1r41ai10801601_fong.pdf').read() | |
| fd, name = tempfile.mkstemp() | |
| f = open(name, 'wb') | |
| f.write(data) | |
| f.close() | |
| result = extract_text(name) | |
| os.unlink(name) |
@lebedov Thank you for the prompt answer.
The jar file was already there:
finotti@H170:~/.cache/python-pdfbox$ ls -l total 32 -rwxrwxr-x 1 finotti finotti 28694 jun 27 10:26 pdfbox-app-2.0.26.jar finotti@H170:~/.cache/python-pdfbox$
Maybe the jar version ??
@sfinotti The file size looks suspiciously small - check that its SHA256 checksum satisfies what is listed on Apache's website using sha256sum. If it doesn't match, try downloading the jar file again (the script works fine with 2.0.26 on my system).
@lebedov Thank you again. You nailed it !!! The file was corrupted I downloaded it again and it's working now. Thank you !!!
Nice example, almost looks easier than using the CLI!
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@sfinotti The script can't find the pdfbox jar file - you need to either copy the jar file to the indicated user cache directory (e.g.,
~/Library/Caches/python-pdfboxon MacOS or~/.cache/python-pdfboxon Linux) or update the first few lines to pass the appropriate path tojpype.addClassPath()