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""" | |
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() |
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