python imgkit wkhtmltopdf OSError: [WinError 6] 句柄无效

﹏ヽ暗。殇╰゛Y 2022-11-07 04:23 168阅读 0赞

今天发现一个问题，按照网上的教程实现html转图片写好demo，在本地可以跑，放到django也可以，但是放到iis 中就报错无效的句柄  
我在终端手动启动项目 python manage.py runserver 没问题  
错误日志：

File ".\Plugin\imgkit.py", line 25, in generate_img_html
    cfg = imgkit.config(wkhtmltoimage=path_wkimg)
    File "c:\api\venv\lib\site-packages\imgkit\api.py", line 101, in config
    return Config(**kwargs)
    File "c:\api\venv\lib\site-packages\imgkit\config.py", line 24, in __init__
    stdout=subprocess.PIPE).communicate()[0].strip()
    File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\subprocess.py", line 665, in __init__
    errread, errwrite) = self._get_handles(stdin, stdout, stderr)
    File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\subprocess.py", line 919, in _get_handles
    errwrite = _winapi.GetStdHandle(_winapi.STD_ERROR_HANDLE)
    OSError: [WinError 6] 句柄无效。

废话不说直接上：  
修改imgkit/congfig.py 24 行  
stdout=subprocess.PIPE, stderr=subprocess.STDOUT, stdin=subprocess.DEVNULL  
附上config.py  
原因猜测是django运行在iis中进程输出有问题

# -*- coding: utf-8 -*-
    import subprocess
    import sys
    
    
    class Config(object):
        def __init__(self, wkhtmltoimage='', meta_tag_prefix='imgkit-'):
            self.meta_tag_prefix = meta_tag_prefix
    
            self.wkhtmltoimage = wkhtmltoimage
    
            self.xvfb = ''
    
            if not self.wkhtmltoimage:
                if sys.platform == 'win32':
                    self.wkhtmltoimage = subprocess.Popen(['where', 'wkhtmltoimage'],
                                                          stdout=subprocess.PIPE, stderr=subprocess.STDOUT, stdin=subprocess.DEVNULL).communicate()[0].strip()
                else:
                    self.wkhtmltoimage = subprocess.Popen(['which', 'wkhtmltoimage'],
                                                          stdout=subprocess.PIPE, stderr=subprocess.STDOUT, stdin=subprocess.DEVNULL).communicate()[0].strip()
            if not self.xvfb:
                if sys.platform == 'win32':
                    self.xvfb = subprocess.Popen(['where', 'xvfb-run'],
                                                 stdout=subprocess.PIPE, stderr=subprocess.STDOUT, stdin=subprocess.DEVNULL).communicate()[0].strip()
                else:
                    self.xvfb = subprocess.Popen(['which', 'xvfb-run'],
                                                 stdout=subprocess.PIPE, stderr=subprocess.STDOUT, stdin=subprocess.DEVNULL).communicate()[0].strip()
    
            try:
                with open(self.wkhtmltoimage):
                    pass
            except IOError:
                raise IOError('No wkhtmltoimage executable found: "{0}"\n'
                              'If this file exists please check that this process can '
                              'read it. Otherwise please install wkhtmltopdf - '
                              'http://wkhtmltopdf.org\n'.format(self.wkhtmltoimage))