Problem accessing a web page
Antoni Mont
amontfes at yahoo.es
Mon Dec 15 16:31:39 EST 2008
Tim Chase wrote:
> When you get the second page, are you getting the same content
> back that you get if you do a search in your favorite browser?
>
> Using just
>
> content = urllib.urlopen(url2).read()
> 'Error' in content # True
> 'Friedrich' in content # False
>
> However, when you browse to the page, those two should be inverted:
>
> 'Error' in content # False
> 'Friedrich' in content # True
>
> I've tried adding in the parameters correctly via post
>
> params = urllib.urlencode([
> ('params.forzaQuery', 'N'),
> ...
> ('layout', 'busquedaisbn'),
> ])
> content = urllib.urlopen(url2, data).read()
>
> However, this too fails because the underlying engine expects a
> session ID in the URL. I finally got it to work with the code below:
>
> import urllib
>
> data = [
> ('params.forzaQuery', 'N'),
> ('params.cdispo', 'A'),
> ('params.cisbnExt', '8484031128'),
> ('params.liConceptosExt[0].texto', ''),
> ('params.orderByFormId', '1'),
> ('action', 'Buscar'),
> ('language', 'es'),
> ('prev_layout', 'busquedaisbn'),
> ('layout', 'busquedaisbn'),
> ]
>
> params = urllib.urlencode(data)
>
> url =
> 'http://www.mcu.es/webISBN/tituloSimpleDispatch.do;jsessionid=5E8D9A11E4A28BDF0BA6B254D0118262'
>
> fp = urllib.urlopen(url, params)
> content = fp.read()
> fp.close()
>
>
> but I had to hard-code the jsessionid parameter in the URL. This
> would have to be determined from the initial call & response of
> the initial URL (the initial URL returns a <FORM> element with
> the URL to POST to, including this magic jsessionid parameter).
>
> Hope this helps nudge you (the OP) in the right direction to get
> what you're looking for.
>
> -tkc
>
>
>
>
>
>
> --
> http://mail.python.org/mailman/listinfo/python-list
OK, Tim, I think you got the point. The jsessionid change in every
response of the initial URL, so I need to read it and stand with it
during the session. Now I must guess how to do it.
Thank you very much to you and also to Chris.
Kind regards,
Toni
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