将 Base64 字符串加载到 Python 图像库中

Loading Base64 String into Python Image Library(将 Base64 字符串加载到 Python 图像库中)
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')

这篇关于将 Base64 字符串加载到 Python 图像库中的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持编程学习网!

本站部分内容来源互联网,如果有图片或者内容侵犯您的权益请联系我们删除!

相关文档推荐

Leetcode 234: Palindrome LinkedList(Leetcode 234:回文链接列表)
How do I read an Excel file directly from Dropbox#39;s API using pandas.read_excel()?(如何使用PANDAS.READ_EXCEL()直接从Dropbox的API读取Excel文件?)
subprocess.Popen tries to write to nonexistent pipe(子进程。打开尝试写入不存在的管道)
I want to realize Popen-code from Windows to Linux:(我想实现从Windows到Linux的POpen-code:)
Reading stdout from a subprocess in real time(实时读取子进程中的标准输出)
How to call type safely on a random file in Python?(如何在Python中安全地调用随机文件上的类型?)