本文介绍了将 Base64 字符串加载到 Python 图像库中的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我通过 ajax 将图像作为 base64 字符串发送到 django.在我的 django 视图中,我需要调整图像大小并将其保存在文件系统中.
I'm sending images as base64 string through ajax to django. In my django view I need to resize the image and save it in the file system.
这是一个base64字符串(简体):
Here is a base64 string(simplified):
data:image/jpeg;base64,/9j/4AAQSkZJRg-it-keeps-going-for-few-more-lines=
我尝试使用以下 python 代码在 PIL 中打开它:
I tried to open this in PIL using the below python code:
img = cStringIO.StringIO(request.POST['file'].decode('base64'))
image = Image.open(img)
return HttpResponse(image, content_type='image/jpeg')
我正在尝试将上传的图片显示回来,但是firefox抱怨'图片无法显示,因为它包含错误'
I'm trying to display the uploaded image back, but firefox complains that 'The image cannot be displayed because it contains error'
我无法弄清楚我的错误.
I couldn't figure out my mistake.
解决方案:
pic = cStringIO.StringIO()
image_string = cStringIO.StringIO(base64.b64decode(request.POST['file']))
image = Image.open(image_string)
image.save(pic, image.format, quality = 100)
pic.seek(0)
return HttpResponse(pic, content_type='image/jpeg')
推荐答案
解决方案:
将打开的 PIL 图像保存到类似文件的对象可以解决问题.
Saving the opened PIL image to a file-like object solves the issue.
pic = cStringIO.StringIO()
image_string = cStringIO.StringIO(base64.b64decode(request.POST['file']))
image = Image.open(image_string)
image.save(pic, image.format, quality = 100)
pic.seek(0)
return HttpResponse(pic, content_type='image/jpeg')
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