pdfplumber处理pdf在线

Question

我正在尝试处理pdfplumber的在线pdf文件。但是pdfplumber似乎不支持urlopen，它只支持pdfplumber.open来处理本地pdf文件。

有什么解决方案吗？

fp = pdfplumber.open("t1.PDF")
#fp = pdfplumber.urlopen('https://www1.hkexnews.hk/listedco/listconews/sehk/2020/0124/2020012400942_c.pdf')

Answer 1

示例

from io import BytesIO

import requests
import pdfplumber

req = requests.get("https://www1.hkexnews.hk/listedco/listconews/sehk/2020/0124/2020012400942_c.pdf")

with pdfplumber.load(BytesIO(req.content)) as pdf:
    print(pdf.pages[0].extract_text())

Answer 2

pdfplumber的存储库是here。如果您只需要处理pdf文件，则不必下载pdf。您可以直接访问链接，如下所示：

import urllib3
import pdfplumber
import io

def extract_text_from_pdf_by_url(url):
    all_text = ''

    http = urllib3.PoolManager()
    temp = io.BytesIO()
    temp.write(http.request("GET", url).data)
    try:    # to verify is the url has valid pdf file!
        pdf = pdfplumber.open(temp)
        for pdf_page in pdf.pages:
            single_page_text = pdf_page.extract_text()
            # TypeError: can only concatenate str (not "NoneType") to str
            if single_page_text is not None: 
                all_text += '\n' + single_page_text
        pdf.close()
    except:
        pass
    return all_text


url  = 'https://www1.hkexnews.hk/listedco/listconews/sehk/2020/0124/2020012400942_c.pdf'
text = extract_text_from_pdf_by_url(url)
print(text)