CODEWITHSUNDEEP
pythonzipdownloadtornado
softwareplay
softwareplay

Reputation: 1409

serve a zip file in tornado.web

I'm new to tornado and I need to serve a zip file (made by python).

So i added this code lines to my script, found here:

        zipname="clients_counter.zip"
        zf = zipfile.ZipFile(zipname, "w")
        for dirname, subdirs, files in os.walk("tozip"):
            zf.write(dirname)
            for filename in files:
                zf.write(os.path.join(dirname, filename))
        zf.close()
        self.set_header('Content-Type', 'application/zip')
        self.write(zipname.getvalue())
        self.finish()

This just gives me a white page as a result, it doessn't start the download. Does anyone a better advice to accomplish my goal?

Upvotes: 3

Views: 1823

Answers (2)

Patrix Zheng
Patrix Zheng

Reputation: 51

If you want to send the zipfile to browser on the fly (without saving to the local filesystem), try this:

from io import BytesIO
zipname="clients_counter.zip"
f=BytesIO()
zf = zipfile.ZipFile(f, "w")
    for dirname, subdirs, files in os.walk("tozip"):
        zf.write(dirname)
        for filename in files:
            zf.write(os.path.join(dirname, filename))
zf.close()
self.set_header('Content-Type', 'application/zip')
self.set_header("Content-Disposition", "attachment; filename=%s" % zipname)
self.write(f.getvalue())
f.close()
self.finish()

BytesIO object is where the zipfile goes, and the zipname is just a name sent to client's browser.

Upvotes: 3

softwareplay
softwareplay

Reputation: 1409

I've read a little bit around and this is what I found out: I've built up the directory static for tornado, i've changed the python code to store the zip file inside the static folder:

zipname="C:/whatever/static/clients_counter.zip"
        zf = zipfile.ZipFile(zipname, "w")
        for dirname, subdirs, files in os.walk("tozip"):
            zf.write(dirname)
            for filename in files:
                zf.write(os.path.join(dirname, filename))
        zf.close()
        self.write("""<a href="/static/clients_counter.zip"> Download Zip of client counter files</a>""")
    except:
        traceback.print_exc()

settings = {
"static_path" : os.path.join(os.path.dirname(__file__), "static")
}  # This indicates the directory for static files to the server: 
   # it has to be a directory called static inside the project directory

Much easier than building a new directory or using other more difficult hacks. If this can help anyone, i'm glad.

Upvotes: 0

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