Re: Problem Displaying Pics

[Rami Chowdhury]

On Wed, 07 Oct 2009 14:05:25 -0700, Victor Subervi  
<victorsube...@gmail.com> wrote:

print 'Content-Type: image/jpeg'
print 'Content-Encoding: base64'
print
print content.encode('base64')
I did change it to text/plain, but I don't know how I'm supposed to  
manually
decode it. Yes, it printed out a bunch of crap to the screen. I've gotten
that far before, and once I read "Adobe" something, so yes, it's an  
image.
TIA,
V


Hopefully the 'crap' you're getting is the base64-encoded representation  
of your binary image -- you should be able to use Python to decode that,  
and then use any image viewer to verify that the JPEG is sound.

Can you remind us of the URL where that code (with the text/plain content  
type) is running?


On Wed, Oct 7, 2009 at 3:52 PM, Rami Chowdhury  
<rami.chowdh...@gmail.com>wrote:

On Wed, 07 Oct 2009 13:24:28 -0700, Victor Subervi <
victorsube...@gmail.com> wrote:

 I did that. In fact, just to make things easier, I wrote out exactly  
what
is
supposed to be rendered, as below:

#!/usr/local/bin/python
import cgitb; cgitb.enable()
import MySQLdb
import cgi
import sys,os
sys.path.append(os.getcwd())
from login import login
user, passwd, db, host = login()
form = cgi.FieldStorage()
db = MySQLdb.connect(host, user, passwd, db)
cursor= db.cursor()
sql = "select pic1 from products where id='1';"
cursor.execute(sql)
content = cursor.fetchall()[0][0].tostring()
cursor.close()
print '''Content-Type: image/jpeg'''    # Only print one line

Content-Encoding: base64
'''
print
print content.encode('base64')


Just to reiterate what Gabriel and Carsten have pointed out, I'd suggest
changing the last few lines of the script, as the comments below  
indicate:

print '''Content-Type: image/jpeg''' # One header line
print '''Content-Encoding: base64''' # Another header line. Note *no*  
blank
line between them
print                                # Blank line signals the end of the
headers
print content.encode(base64)         # Base64-encoded content comes  
*after*
the blank line

If you include extra blank lines after the headers, the browser will
misunderstand where the binary image data begins, and so will see a
malformed JPEG.

If this doesn't work, I suggest changing the content-type header to
text/plain and trying to manually decode and check the image data to  
ensure
it's valid.



On Wed, Oct 7, 2009 at 2:47 PM, Gabriel Genellina  
<gagsl-...@yahoo.com.ar
>wrote:

 En Wed, 07 Oct 2009 12:00:13 -0300, Victor Subervi
<victorsube...@gmail.com> escribió:

> print '''Content-Type: image/jpeg
>
> '''
> print
> print content

On Wed, Oct 7, 2009 at 9:51 AM, Gabriel Genellina <gagsl-
p...@yahoo.com.ar>wrote:

> That's still wrong. The output should be:
>
> - a line containing Content-Type: image/jpeg
> - a blank line (no more!)
       ^^^^^^^^^^^^^^^^^^^^^^^^^
> - the actual image data

--
Gabriel Genellina
--
http://mail.python.org/mailman/listinfo/python-list




--
Rami Chowdhury
"Never attribute to malice that which can be attributed to stupidity" --
Hanlon's Razor
408-597-7068 (US) / 07875-841-046 (UK) / 0189-245544 (BD)




--
Rami Chowdhury
"Never attribute to malice that which can be attributed to stupidity" --  
Hanlon's Razor
408-597-7068 (US) / 07875-841-046 (UK) / 0189-245544 (BD)
--
http://mail.python.org/mailman/listinfo/python-list