为什么通过 python-pdfkit 调用时出现 wkhtmltopdf IO 错误？

Question

我正在尝试将我的 wkhtmltopdf 软件包升级到 0.12.2.1 并且没有任何运气。

• 在更新之前它确实有效。我试图更新的原因是 修复 PDF 页面之间内容的拆分。
• 我正在运行 - Ubuntu 64x - 值得信赖
• 我正在通过 python-pdfkit 使用。
• 我开始获取最新版本的wkhtmltopdf http://sourceforge.net/projects/wkhtmltopdf/files/0.12.2.1/wkhtmltox-0.12.2.1_linux-trusty-amd64.deb/download?use_mirror=hivelocity

以下是我到目前为止所做/尝试过的事情。有没有人幸运地更新了他们的设置？或者任何指针都会有很大帮助！谢谢！

开箱即用，我得到了Configuration Error，我硬编码只是为了通过这个。

# -*- coding: utf-8 -*-
import subprocess
import sys

class Configuration(object):
    def __init__(self, wkhtmltopdf='', meta_tag_prefix='pdfkit-'):
        self.meta_tag_prefix = meta_tag_prefix

        self.wkhtmltopdf = wkhtmltopdf

        if not self.wkhtmltopdf:
            if sys.platform == 'win32':
                self.wkhtmltopdf = subprocess.Popen(                    ['where', 'wkhtmltopdf'], stdout=subprocess.PIPE).communicate()[0].strip()
            else:
                self.wkhtmltopdf = subprocess.Popen( ['which', 'wkhtmltopdf'], stdout=subprocess.PIPE).communicate()[0].strip()

        try:
            #with open(self.wkhtmltopdf) as f:
           with open("/usr/local/bin/wkhtmltopdf") as f:
                pass
        except IOError:
            raise IOError('No wkhtmltopdf executable found: "%s"\n'
                          'If this file exists please check that this process can '
                          'read it. Otherwise please install wkhtmltopdf - '
                          'https://github.com/JazzCore/python-pdfkit/wiki/Installing-wkhtmltopdf' % self.wkhtmltopdf)

现在我收到此错误，不知道如何继续。我尝试将shell=True 添加到上面的 Popen 中，但这也不起作用。

Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/rq/worker.py", line 543, in perform_job
    rv = job.perform()
  File "/usr/local/lib/python2.7/dist-packages/rq/job.py", line 490, in perform
    self._result = self.func(*self.args, **self.kwargs)
  File "/home/worker-1/Desktop/Dropbox/changeaddress/facts/jobs.py", line 864, in job_sharepdfs
    mymovepdf_link = build_mymovepdf(account_uuid, addresschange_uuid)
  File "/home/worker-1/Desktop/Dropbox/changeaddress/facts/jobs.py", line 608, in build_mymovepdf
    s3file = pdfkit.from_string( output.getvalue() , False )
  File "/usr/local/lib/python2.7/dist-packages/pdfkit/api.py", line 68, in from_string
    return r.to_pdf(output_path)
  File "/usr/local/lib/python2.7/dist-packages/pdfkit/pdfkit.py", line 93, in to_pdf
    stderr=subprocess.PIPE)
  File "/usr/lib/python2.7/subprocess.py", line 710, in __init__
    errread, errwrite)
  File "/usr/lib/python2.7/subprocess.py", line 1327, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory

Answer 1

您必须设置wkhtmltopdf 库的configuration（路径）。

我已经创建了一个基本的辅助函数，如下所示，

import os
import pdfkit

WKHTMLTOPDF_PATH = '/usr/local/bin/wkhtmltopdf'

def generate_pdf(html, static_path,  _path):
    config = pdfkit.configuration(wkhtmltopdf=WKHTMLTOPDF_PATH)
    _status = pdfkit.from_string(
        html,
        os.path.join(static_path, _path),
        configuration=config,
        options={
            'page-size': 'A4',
            'margin-top': '0',
            'margin-right': '0',
            'margin-left': '0',
            'margin-bottom': '0',
            'zoom': '1.2',
            'encoding': "UTF-8",
        })
    return _path if _status else ''

用途：

html = "<h1>Hello World !!!</h1>"
static_path = "/static/"
file_path = "pdfs/out.pdf"
generate_pdf(html, static_path, file_path)

Answer 2

另一种解决方案（安装wkhtmltopdf）：

wget http://download.gna.org/wkhtmltopdf/0.12/0.12.3/wkhtmltox-0.12.3_linux-generic-amd64.tar.xz
tar xvf wkhtmltox-0.12.3_linux-generic-amd64.tar.xz
sudo mv wkhtmltox/bin/wkhtmltopdf /usr/local/bin/wkhtmltopdf
sudo chmod +x /usr/local/bin/wkhtmltopdf