Re: [Jython-users] ImportError: no module named java

[Ihab A.B. A. <ih...@ah...>]

Hi all,

More re this issue. I finally decided to use PyServlet verbatim, as a 
baseline test case. Here is the relevant part of my "web.xml" file --

  <servlet>
    <servlet-name>PyServlet</servlet-name>
    <servlet-class>org.python.util.PyServlet</servlet-class>
    <init-param>
      <param-name>python.home</param-name>
      <param-value>/opt/java/jython-2.1a1</param-value>
    </init-param>
  </servlet>
 
  <servlet-mapping>
    <servlet-name>PyServlet</servlet-name>
    <url-pattern>*.py</url-pattern>
  </servlet-mapping>

and here is a servlet in Jython --

  from javax.servlet.http import HttpServlet
  import os

  class test(HttpServlet):

    def doGet(self, req, res):
        res.setContentType("text/html");
        out = res.getOutputStream()
        print >>out, "Hello World, how are we?"
        print >>out, dir(os)
        print >>out, os.listdir('/home/ihab')
        out.close()
        return 

Now, when I invoke this, I get the following --

  Hello World, how are we? ['__depends__', 'classDictInit'] 

  A Servlet Exception Has Occurred
    Traceback (innermost last):
    File "/home/ihab/www-docs/logs/../bin/../webapps/omtdb/ ...
      edu/umn/genomics/omtdb/test.py", line 24, in doGet
    AttributeError: class 'org.python.modules.os' has no attribute 'listdir'

so notice that dir(os) does not show any of the symbols that I would expect 
to find and, of course, invoking os.listdir() raises an exception.

Thanks & peace,

Ihab

-- 
Ihab A.B. Awad <ih...@ah...>
Center for Computational Genomics and Bioinformatics,
University of Minnesota. http://www.cbc.umn.edu/~ihab/