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@mywaiting
Created August 23, 2012 16:45
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Tornado上传文件的例子!
"""
http://saepy.sinaapp.com/topic/24/Tornado%E4%B8%8A%E4%BC%A0%E6%96%87%E4%BB%B6%E7%A4%BA%E4%BE%8B
在bcore的开发过程中,涉及到上传文件有两个地方,一个是相册,一个是文章图文混排。这里作为一个备忘。罗列一些关键点:
文件上传的内容体在tornado.web.RequestHandler.request.files属性中,并且是以数组形式存放的。
使用临时文件存储时,在write完成后要记着把seek重置到文件头。要不然文件无法被读取。
再使用Image模块的thumbnail方法进行缩放时,resample=1作为重载渲染参数能够有效的使图片平滑,消除锯齿。
"""
if self.request.files:
for f in self.request.files['postfile']:
rawname = f['filename']
dstname = str(int(time.time()))+'.'+rawname.split('.').pop()
thbname = "thumb_"+dstname
# write a file
# src = "./static/upload/src/"+dstname
# file(src,'w+').write(f['body'])
tf = tempfile.NamedTemporaryFile()
tf.write(f['body'])
tf.seek(0)
# create normal file
# img = Image.open(src)
img = Image.open(tf.name)
img.thumbnail((920,920),resample=1)
img.save("./static/upload/postfiles/"+dstname)
# create thumb file
img.thumbnail((100,100),resample=1)
img.save("./static/upload/postfiles/"+thbname)
tf.close()
@woostundy
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Image打开的时候出现IO Permission denied错误是什么原因?

@khahux
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khahux commented Apr 23, 2015

write a file 传上去的图片乱码,# file(src,'wb+').write(f['body'])

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