django 处理上传图片生成缩略图首先要注意form标签上必须有enctype="multipart/form-data"属性,另外要装好PIL库, 然后就很简单了,如下是实例代码:
upload.html
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< div id = "uploader" > < form id = "upload" enctype = "multipart/form-data" action = "/ajax/upload/" method = "post" > < input id = "file" name = "file" type = "file" > < input type = "submit" value = "Upload" > </ form > </ div > |
view.py
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# -*- coding: utf-8 -*- from django.http import HttpResponse import Image def upload(request): reqfile = request.FILES[ 'file' ] image = Image. open (reqfile) image.thumbnail(( 128 , 128 ),Image.ANTIALIAS) image.save( "/home/lhb/1.jpeg" , "jpeg" ) return HttpResponse( "success." ) |
下面介绍下生成缩略图质量差的解决办法。
使用python的PIL库的thumbnail方法生成缩略图的质量很差,需要使用resize方法来生成缩略图,并制定缩略图的质量,如下代码:
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image = image.resize((x, y), Image.ANTIALIAS) quality_val = 90 image.save(filename, 'JPEG' , quality = quality_val) |
总结
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原文链接:http://outofmemory.cn/code-snippet/35750/django-upload-image-file-make-thumbnail