Pillow 返回错误：“IOError：图像文件被截断（6 个字节未处理）”

Question

我使用 Pillow 4.1.1 和 Python 2.7/Django 1.9

我的网站上有成千上万张用户上传的图片，我使用枕头从模板生成缩略图。

例如：

{% thumbnail apicture.file "1200x350" crop="center" as im %}
    <img src="{{ im.url }}" width=100%>
{% endthumbnail %}

直到本周，它都运行良好。Django 现在显示此错误：

IOError: image file is truncated (6 bytes not processed)

在 stackoverflow 上找到的解决方案不起作用，因为它们都适用于视图而不是模板（例如 ImageFile.LOAD_TRUNCATED_IMAGES = True）。

有没有一种简单的方法可以识别哪些图片会产生此错误？如何解决这个错误？

这是完整的回溯：

Internal Server Error: /trip/province-dublin-2034
Traceback (most recent call last):
  File "C:\Python27\lib\site-packages\django\core\handlers\base.py", line 149, in get_response
    response = self.process_exception_by_middleware(e, request)
  File "C:\Python27\lib\site-packages\django\core\handlers\base.py", line 147, in get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)    
  File "C:\Terradiem\terradiem\trip\views.py", line 300, in trip
    return render(request, 'trip/results.html', qsall)
  File "C:\Python27\lib\site-packages\django\shortcuts.py", line 67, in render template_name, context, request=request, using=using)
  File "C:\Python27\lib\site-packages\django\template\loader.py", line 97, in render_to_string
    return template.render(context, request)
  File "C:\Python27\lib\site-packages\django\template\backends\django.py", line 95, in render
    return self.template.render(context)
  File "C:\Python27\lib\site-packages\django\template\base.py", line 206, in render
    return self._render(context)
  File "C:\Python27\lib\site-packages\django\test\utils.py", line 92, in instrumented_test_render
    return self.nodelist.render(context)
  File "C:\Python27\lib\site-packages\django\template\base.py", line 992, in render
    bit = node.render_annotated(context)
  File "C:\Python27\lib\site-packages\django\template\base.py", line 959, in render_annotated
    return self.render(context)
  File "C:\Python27\lib\site-packages\django\template\defaulttags.py", line 220, in render
    nodelist.append(node.render_annotated(context))
  File "C:\Python27\lib\site-packages\django\template\base.py", line 959, in render_annotated
    return self.render(context)
  File "C:\Python27\lib\site-packages\django\template\defaulttags.py", line 220, in render
    nodelist.append(node.render_annotated(context))
  File "C:\Python27\lib\site-packages\django\template\base.py", line 959, in render_annotated
    return self.render(context)
  File "C:\Python27\lib\site-packages\django\template\defaulttags.py", line 326, in render
    return nodelist.render(context)
  File "C:\Python27\lib\site-packages\django\template\base.py", line 992, in render
    bit = node.render_annotated(context)
  File "C:\Python27\lib\site-packages\django\template\base.py", line 959, in render_annotated
    return self.render(context)
  File "C:\Python27\lib\site-packages\sorl\thumbnail\templatetags\thumbnail.py", line 59, in render
    return self._render(context)
  File "C:\Python27\lib\site-packages\sorl\thumbnail\templatetags\thumbnail.py", line 137, in _render
    thumbnail = get_thumbnail(file_, geometry, **options)
  File "C:\Python27\lib\site-packages\sorl\thumbnail\shortcuts.py", line 8, in get_thumbnail
    return default.backend.get_thumbnail(file_, geometry_string, **options)
  File "C:\Python27\lib\site-packages\sorl\thumbnail\base.py", line 125, in get_thumbnail
    thumbnail)
  File "C:\Python27\lib\site-packages\sorl\thumbnail\base.py", line 157, in _create_thumbnail
    image = default.engine.create(source_image, geometry, options)
  File "C:\Python27\lib\site-packages\sorl\thumbnail\engines\base.py", line 21, in create
    image = self.colorspace(image, geometry, options)
  File "C:\Python27\lib\site-packages\sorl\thumbnail\engines\base.py", line 53, in colorspace
    return self._colorspace(image, colorspace)
  File "C:\Python27\lib\site-packages\sorl\thumbnail\engines\pil_engine.py", line 101, in _colorspace
    return image.convert('RGB')
  File "C:\Python27\lib\site-packages\PIL\Image.py", line 844, in convert
self.load()
  File "C:\Python27\lib\site-packages\PIL\ImageFile.py", line 226, in load
"(%d bytes not processed)" % len(b))
IOError: image file is truncated (6 bytes not processed)

谢谢

Answer 1

好的，我得到了我自己问题的答案！

正如lepsch评论的那样，只需添加

from PIL import Image, ImageFile ImageFile.LOAD_TRUNCATED_IMAGES = True

尽早在 django 应用程序中使用。我将它添加到生成页面的视图中，它工作正常。