Python 图像库错误 - 渲染 : not enough data 时捕获 IOError

Question

我创建了一个网站，它使用 sorl-thumbnail 来调整上传图像的大小。大多数图像都可以毫无问题地调整大小，但很少有图像出现以下错误:

Caught IOError while rendering: not enough data
Request Method: GET
Request URL:    http://localhost:8000/user/nash22/photographs/
Django Version: 1.3.1
Exception Type: TemplateSyntaxError
Exception Value:    
Caught IOError while rendering: not enough data
Exception Location: /usr/local/lib/python2.7/site-packages/PIL/TiffImagePlugin.py in load, line 382
Python Executable:  /usr/local/bin/python
Python Version: 2.7.1

我在谷歌上搜索但找不到任何相关答案。有人可以帮助我发生了什么事，我该如何解决？谢谢。

编辑

完整的回溯

Traceback (most recent call last):

File "/lib/python2.7/django/core/handlers/base.py", line 111, in get_response response = callback(request, *callback_args, **callback_kwargs)

File "/home/swaroop/project/apps/photography/views.py", line 702, in showPhoto context_instance=RequestContext(request))

File "/lib/python2.7/django/shortcuts/init.py", line 20, in render_to_response return HttpResponse(loader.render_to_string(*args, **kwargs), **httpresponse_kwargs)

File "/lib/python2.7/django/template/loader.py", line 188, in render_to_string return t.render(context_instance)

File "/lib/python2.7/django/template/base.py", line 123, in render return self._render(context)

File "/lib/python2.7/django/template/base.py", line 117, in _render return self.nodelist.render(context)

File "/lib/python2.7/django/template/base.py", line 744, in render bits.append(self.render_node(node, context))

File "/lib/python2.7/django/template/base.py", line 757, in render_node return node.render(context)

File "/lib/python2.7/django/template/loader_tags.py", line 127, in render return compiled_parent._render(context)

File "/lib/python2.7/django/template/base.py", line 117, in _render return self.nodelist.render(context)

File "/lib/python2.7/django/template/base.py", line 744, in render bits.append(self.render_node(node, context))

File "/lib/python2.7/django/template/base.py", line 757, in render_node return node.render(context)

File "/lib/python2.7/django/template/loader_tags.py", line 64, in render result = block.nodelist.render(context)

File "/lib/python2.7/django/template/base.py", line 744, in render bits.append(self.render_node(node, context))

File "/lib/python2.7/django/template/base.py", line 757, in render_node return node.render(context)

File "/lib/python2.7/sorl/thumbnail/templatetags/thumbnail.py", line 45, in render return self._render(context)

File "/lib/python2.7/sorl/thumbnail/templatetags/thumbnail.py", line 97, in render file, geometry, **options

File "/lib/python2.7/sorl/thumbnail/base.py", line 61, in get_thumbnail thumbnail)

File "/lib/python2.7/sorl/thumbnail/base.py", line 86, in _create_thumbnail image = default.engine.create(source_image, geometry, options)

File "/lib/python2.7/sorl/thumbnail/engines/base.py", line 15, in create image = self.orientation(image, geometry, options)

File "/lib/python2.7/sorl/thumbnail/engines/base.py", line 26, in orientation return self._orientation(image)

File "/lib/python2.7/sorl/thumbnail/engines/pil_engine.py", line 29, in _orientation exif = image._getexif()

File "/usr/local/lib/python2.7/site-packages/PIL/JpegImagePlugin.py", line 381, in _getexif info.load(file)

File "/usr/local/lib/python2.7/site-packages/PIL/TiffImagePlugin.py", line 382, in load raise IOError, "not enough data"

IOError: not enough data

Answer 1

更新

image._getexif 据称是高度实验性的。引用文献 sorl-thumbnail和 issue #98 ，您可以将代码更新为

def _orientation(self, image):
    try:
        exif = image._getexif()
    except (AttributeError, IOError):
        exif = None

---

这是由于 PIL 尝试加载损坏的或可能不受支持的 TIFF 文件引起的。
通常当你使用 forms.ImageField 时，Django 会检查上传图片的正确性。
因此你需要:

• 确保您正在使用 forms.ImageField(models.ImageField 的默认设置)来处理 View 中的上传

• 通过

  检查上传的图片

  from PIL import Image
  Image.open(path).load()
  

• 使用处理 TIFF 的工具包打开图像，如果可以打开，将其保存为 Jpeg 或 Png 并更新模型实例的字段以指向新文件。

您还可以限制用户上传普通格式，如 jpeg/png/gif 而不是 TIFF