Hello,
I'm quite new to jython, i find it very powerful as a script language.
But at this time, I have a problem to make an independant jar from a jython
script.
I use Jython 2.0, with SUN JDK1.3.0 on Win2000 Pro.
My script is called dir.py and contains:
== begin ======
import os
for file in os.listdir('.'):
print file
== end ========
It works well as I use the command line:
jython dir.py
(it shows me the list of the files of the current directory)
I want to build a jar file from this script.
I used this command :
jythonc -a -j dir.jar dir.py
It created a jar file (called dir.jar) which contains normally all the
needed jython libraries
needed to make it run.
But as I want to run it, using the command
java -jar dir.jar
I got an exception :
== begin ==============
Java Traceback:
at org.python.core.Py.JavaError(Py.java:238)
at org.python.core.PyTableCode.call(PyTableCode.java:159)
at org.python.core.imp.createFromCode(imp.java:157)
at org.python.core.Py.runMain(Py.java:798)
at dir.main(dir.java:61)
Traceback (innermost last):
File "C:\Documents\src\jython\test\dir.py", line 0, in main
java.lang.ExceptionInInitializerError: java.lang.NullPointerException
at org.python.modules.os.<clinit>(os.java:11)
at java.lang.reflect.Method.invoke(Native Method)
at org.python.core.PyJavaClass.initialize(PyJavaClass.java:108)
at
org.python.core.PyJavaClass.lookupGivingClass(PyJavaClass.java:666)
at org.python.core.PyClass.lookup(PyClass.java:164)
at org.python.core.PyJavaClass.__findattr__(PyJavaClass.java:712)
at org.python.core.PyObject.__getattr__(PyObject.java:670)
at dir$_PyInner.main$1(dir.java:43)
at dir$_PyInner.call_function(dir.java:28)
at org.python.core.PyTableCode.call(PyTableCode.java:155)
at org.python.core.imp.createFromCode(imp.java:157)
at org.python.core.Py.runMain(Py.java:798)
at dir.main(dir.java:61)
java.lang.ExceptionInInitializerError: java.lang.ExceptionInInitializerError
== end ================
I solved the problem giving the root dir of jython installation as a system
property:
java -Dpython.home=c:\dev\jython-2.0 -jar dir.jar
But it annoys me...
Is the generated jar (dir.jar) still dependant of the jython installation ?
Does it mean that it can't run on a workstation having only JRE installed ?
If not, please help me to find out the thing or the option I missed.
Thanks
Pierre
--
Pierre Dittgen, software engineer
CRIL Telecom software
E-mail: pie...@cr...
Phone: (33) 1 58 17 04 64
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