谷歌应用程序引擎下载包含文件的文件 [英] google app engine download a file containing files
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问题描述
好的,我有:
$ p $ class Content(db.Model):
code = db.TextProperty( )
存储在数据库中的代码有3种不同的值。我将如何创建一个zip文件,将三个代码值存储在三个可以下载的独立文件中?
基于eric.f的回答:
我重写了他的代码,使其能够完成我想要的功能:
contents = db.GqlQuery(SELECT * FROM Content ORDER BY created DESC)
output = StringIO.StringIO()
with zipfile.ZipFile输出'w')作为myzip:
表示内容中的内容:
如果content.code:
code = content.code
else:
code = content。 code2
myzip.writestr('udacity_code'+`content.key().id()`,code)
self.response.headers [Content-Type] =application / zip
self.response.headers ['Content-Disposition'] =attachment; filename = test.zip
self.response.out.write(output.getvalue())
我得到了一个错误...
self.response.out.write(output.getvalue(),utf-8)
文件/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7 /StringIO.py,lin e 270,in getvalue
UnicodeDecodeError:'ascii'编解码器无法解码位置10中的字节0xb4:序号不在范围内(128)
解决方案
import zipfile
import StringIO
output = StringIO。 StringIO()
带zipfile.ZipFile(输出,'w')as myzip:
myzip.writestr('file1.txt','aaaaaaaaa')
myzip.writestr ('file2.txt','bbbbbbbbb')
myzip.writestr('file3.txt','ccccccccc')
然后作出回应,将 output.getvalue()
设为内容,并设置标题如下:
内容类型:application / zip
内容处置:附件; filename = test.zip
Okay, I have:
class Content(db.Model):
code=db.TextProperty()
And there are 3 different values of code stored in the database. How would I create a zip file that stores the three values of code in 3 separate files that would be downloaded?
Based on eric.f's answer: I rewrote his code to make it to do what I wanted:
contents = db.GqlQuery("SELECT * FROM Content ORDER BY created DESC")
output = StringIO.StringIO()
with zipfile.ZipFile(output, 'w') as myzip:
for content in contents:
if content.code:
code=content.code
else:
code=content.code2
myzip.writestr('udacity_code'+`content.key().id()`, code)
self.response.headers["Content-Type"] = "application/zip"
self.response.headers['Content-Disposition'] = "attachment; filename=test.zip"
self.response.out.write(output.getvalue())
I got an error though...
self.response.out.write(output.getvalue(), "utf-8")
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/StringIO.py", line 270, in getvalue
UnicodeDecodeError: 'ascii' codec can't decode byte 0xb4 in position 10: ordinal not in range(128)
解决方案
import zipfile
import StringIO
output = StringIO.StringIO()
with zipfile.ZipFile(output, 'w') as myzip:
myzip.writestr('file1.txt', 'aaaaaaaaa')
myzip.writestr('file2.txt', 'bbbbbbbbb')
myzip.writestr('file3.txt', 'ccccccccc')
then make your response, set output.getvalue()
as the content, and set headers as below:
Content-type: application/zip
Content-disposition: attachment; filename=test.zip
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