Issue1652
Created on 2010-09-08.16:22:48 by ddaniels, last changed 2014-05-22.00:17:58 by zyasoft.
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jar_issue.tar.gz
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ddaniels,
2010-09-08.16:22:47
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example py script and postgreSQL JDBC jar file |
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msg6049 (view) |
Author: Doug Daniels (ddaniels) |
Date: 2010-09-08.16:22:47 |
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I'm having trouble loading classes from a JAR file using the java.ext.dir or java.class.path properties passed to jython as -D arguments.
I'm using the PostgreSQL 8.4 JDBC JAR to test this, which is attached along with a test script.
When I run:
jython -Djava.class.path=jar/postgresql-8.4-701.jdbc4.jar postgres_jar_loader.py
The postgres Driver class is not found:
Property java.ext.dirs: [/Library/Java/Extensions:/System/Library/Java/Extensions:/System/Library/Frameworks/JavaVM.framework/Versions/1.6.0/Home/lib/ext]
Property java.class.path: [jar/postgresql-8.4-701.jdbc4.jar]
Unable to import Driver class
Traceback (most recent call last):
File "postgres_jar_loader.py", line 11, in <module>
import org.postgresql.Driver
ImportError: No module named Driver
When I run:
jython -Djava.ext.dirs=jar postgres_jar_loader.py
The same thing happens.
However, if I set the CLASSPATH env var, everything works:
export CLASSPATH="jar/postgresql-8.4-701.jdbc4.jar"
jython postgres_jar_loader.py
Property java.ext.dirs: [/Library/Java/Extensions:/System/Library/Java/Extensions:/System/Library/Frameworks/JavaVM.framework/Versions/1.6.0/Home/lib/ext]
Property java.class.path: [/opt/local/share/java/jython/jython.jar:jar/postgresql-8.4-701.jdbc4.jar]
Successfully imported Driver class
Is there an issue with passing these arguments to jython with the -D option?
This is on a 32-bit Mac running OS 10.6 with jython 2.5.1 installed via port.
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msg8517 (view) |
Author: Jim Baker (zyasoft) |
Date: 2014-05-22.00:17:57 |
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This is a problem with how JDBC resolves a specific driver - it must be in the CLASSPATH or the equivalent of your container. See for example http://www.jython.org/jythonbook/en/1.0/DatabasesAndJython.html#getting-started
There is other ways of making this work, see also
http://www.jython.org/jythonbook/en/1.0/appendixB.html#working-with-classpath
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Date |
User |
Action |
Args |
2014-05-22 00:17:58 | zyasoft | set | status: open -> closed resolution: invalid messages:
+ msg8517 nosy:
+ zyasoft |
2013-02-26 17:34:35 | fwierzbicki | set | nosy:
+ fwierzbicki |
2013-02-20 19:00:46 | fwierzbicki | set | versions:
+ Jython 2.5, - 2.5.1 |
2010-09-08 16:22:48 | ddaniels | create | |
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