Re: Applet Help

> Have you tried to run the application using JNLP yet?  If it works as a
> standalone JAR then it will probably work with JNLP.  However, even if
> it does work then this is not really a resolution for your issue.  Can
> you tell us what application server and Java version that you are running?
>
>
> Josh Juneau
> juneau001@... <mailto:juneau001@...>
> http://jj-blogger.blogspot.com
> Twitter ID:  javajuneau
>
>
> On Mon, Jun 15, 2009 at 3:40 PM, Neil M. <nabber00@...
> <mailto:nabber00@...>> wrote:
>
>     Thanks, I guess should explain some more.  First, I'm using Jython
>     2.5 RC4
>     if that makes a difference.  Also, the files do not exist on the
>     webserver
>     nor do I want them to be there, the .class and .py files (along with all
>     of jython) are included in the .jar file and I expect it to just
>     find and
>     load those.  I don't want to see any HTTP requests like I'm seeing
>     because
>     it is unbearably slow to load the applet that way.
>
>     I changed the way the factory gets called, for example I do this to
>     get a
>     class:
>
>     JythonFactory jf = JythonFactory.getInstance();
>     Downloader eType = (Downloader) jf.getJythonObject(
>                                   "jyinterface.Downloader", "JDownloader");
>
>
>     There is a corresponding Downloader.class and JDownloader.py file
>     included
>     in the .jar.
>
>     So it should just be looking in classpath and sys.path to import things?
>     I don't understand why it is hitting the webserver to do this.  I figure
>     it must be a classpath or pythonpath issue?
>
>     Neil
>
>     > Neil-
>     >
>     > It seems from your example like you are passing a string
>     representation of
>     > the path to the Python modules.  That is one way of performing
>     this task.
>     > Another way is to place the modules somewhere in your sys.path and
>     pass
>     > just
>     > the name of the module instead of the complete path.  You can take
>     a look
>     > at
>     > an article submitted to Jython Monthly by Charlie Groves for more
>     > information:
>     > http://wiki.python.org/jython/JythonMonthly/Articles/October2006/3
>     on this
>     > technique.  You'd have to modify your code a bit, but this may be
>     one way
>     > to
>     > get around these errors.
>     >
>     > I am not exactly sure why you are receiving the errors unless the
>     modules
>     > are not available to the web server in the designated path that
>     you are
>     > sending to the factory.
>     >
>     > Hope this gets you headed in the right direction for resolving the
>     errors.
>     >
>     > Josh Juneau
>     > juneau001@... <mailto:juneau001@...>
>     > http://jj-blogger.blogspot.com
>     > Twitter ID:  javajuneau
>     >
>     >
>     > On Mon, Jun 15, 2009 at 12:16 PM, Neil M. <nabber00@...
>     <mailto:nabber00@...>> wrote:
>     >
>     >> Hi, I'm trying to run a Java Applet with a Java Swing GUI but using a
>     >> python library as a backed.  I've packed it all into a .jar that runs
>     >> fine as a standalone Java app.  When I move it to the webserver
>     it seems
>     >> to be issuing HTTP requests (see attached log) for various
>     imports and I
>     >> have no idea why.  Something with the classpath or pythonpath?  Any
>     >> ideas?
>     >>
>     >> Neil
>     >>
>     >> --------------- modified jython factory ----------------------
>     >>   public static Object getJythonObject(String interfaceName,
>     >>                                        String pathToJythonModule){
>     >>
>     >>       Object javaInt = null;
>     >>       PythonInterpreter interpreter = new PythonInterpreter();
>     >>       //interpreter.execfile(pathToJythonModule);
>     >>       interpreter.exec("import " + pathToJythonModule);
>     >>       //String tempName =
>     >> pathToJythonModule.substring(pathToJythonModule.lastIndexOf("/")+1);
>     >>       String tempName =
>     >> pathToJythonModule.substring(pathToJythonModule.lastIndexOf(".")+1);
>     >>       //tempName = tempName.substring(0, tempName.indexOf("."));
>     >>       //System.out.println(tempName);
>     >>       String instanceName = tempName.toLowerCase();
>     >>       String javaClassName = tempName.substring(0,1).toUpperCase() +
>     >>                           tempName.substring(1);
>     >>       //String objectDef = "=" + javaClassName + "()";
>     >>       String objectDef = "=" + pathToJythonModule + "." +
>     javaClassName
>     >> + "()";
>     >>       interpreter.exec(instanceName + objectDef);
>     >>       //System.out.println(instanceName + objectDef);
>     >>        try {
>     >>           Class JavaInterface = Class.forName(interfaceName);
>     >>           javaInt =
>     >>              
>      interpreter.get(instanceName).__tojava__(JavaInterface);
>     >>        } catch (ClassNotFoundException ex) {
>     >>            ex.printStackTrace();  // Add logging here
>     >>        }
>     >>
>     >>       return javaInt;
>     >>   }
>     >>
>     >>
>     >> -------------------- HTTP Log --------------------
>     >>
>     >> [Sun Jun 14 18:50:40 2009] [error] [client X] File does not exist:
>     >> /download_test/stat$py.class
>     >>
>     >> [Sun Jun 14 18:50:41 2009] [error] [client X] File does not exist:
>     >> /download_test/stat$py.class
>     >> [Sun Jun 14 18:50:42 2009] [error] [client X] File does not exist:
>     >> /download_test/java
>     >> [Sun Jun 14 18:50:45 2009] [error] [client X] File does not exist:
>     >> /download_test/java
>     >> [Sun Jun 14 18:50:46 2009] [error] [client X] File does not exist:
>     >> /download_test/java
>     >> [Sun Jun 14 18:50:46 2009] [error] [client X] File does not exist:
>     >> /download_test/java
>     >> [Sun Jun 14 18:50:47 2009] [error] [client X] File does not exist:
>     >> /download_test/org.class
>     >> [Sun Jun 14 18:50:47 2009] [error] [client X] File does not exist:
>     >> /download_test/org.class
>     >> [Sun Jun 14 18:50:48 2009] [error] [client X] File does not exist:
>     >> /download_test/org
>     >> [Sun Jun 14 18:50:48 2009] [error] [client X] File does not exist:
>     >> /download_test/org
>     >> [Sun Jun 14 18:50:49 2009] [error] [client X] File does not exist:
>     >> /download_test/org
>     >> [Sun Jun 14 18:50:50 2009] [error] [client X] File does not exist:
>     >> /download_test/org
>     >>
>     >>
>     >>
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>
>
>
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>     royalty-free distribution of the report engine for externally facing
>     server and web deployment.
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