使用 PDFMiner (Python) 处理在线 pdf 文件.编码网址?

2022-01-20 00:00:00 python urllib2 urllib pdf fetch

问题描述

我希望使用 PDFMiner 提取在线可用的 pdf 文件的内容.

I am wishing to extract the content of pdf files available online using PDFMiner.

我的代码基于 文档 用于提取硬盘上的PDF文件内容:

My code is based on the one available in the documentation used to extract the content of PDF files on the hard disk:

# Open a PDF file.
fp = open('mypdf.pdf', 'rb')
# Create a PDF parser object associated with the file object.
parser = PDFParser(fp)
# Create a PDF document object that stores the document structure.
document = PDFDocument(parser)

稍作改动后效果很好.

现在，我已尝试将 urllib2.openurl 用于在线 PDF，但这不起作用.我收到一条错误消息:coercing to Unicode: need string or buffer, instance found.

Now, I have tried urllib2.openurl for online PDFs but that doesn't work. I get an error message : coercing to Unicode: need string or buffer, instance found.

如何从 urllib2.openurl 获取字符串(或其他)，以便在我给它一个 PDF 文件名时它与 open 函数相同(相对于 URL)`?

How can I get a string (or whatever) from urllib2.openurl so that it is the same as what the open function when I give it a PDF file name (versus an URL)`?

如果我的问题不清楚，请告诉我.

Please tell me if my question is not clear.

解决方案

嗯，终于找到解决方案了，

Well, I finally found out a solution,

我求助于 Request 和 StringIO 并摆脱了 open('my_file', 'rd') 命令

I resorted on Request and StringIO and got rid off the open('my_file', 'rd') command

from urllib2 import Request
from StringIO import StringIO

url = 'my_url'

open = urllib2.urlopen(Request(url)).read()
memoryFile = StringIO(open)

parser = PDFParser(memoryFile)

这样 Python 将 url 视为一个文件(这么说).

That way Python considers the url as a file (to say so).

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