Hello,
I was trying to run the OpenNLP UIMA wrapper "OpenNLPAggregate.xml"
from the UIMA examples (org.apache.uima.examples.opennlp.annotators)
and load it in the CAS Visual Debugger. I got the following Java
exception:
"Exception in thread "AWT-EventQueue-0"
java.lang.UnsupportedClassVersionError: Bad version number in .class
file
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:675)
at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:316)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:
280)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:
374)
at
org
.apache
.uima
.examples
.opennlp.annotator.SentenceDetector.initialize(SentenceDetector.java:54)
...
at
java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:176)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:
110)
"
The Java source code of this line is when the Wrapper initializes the
OpenNLP Sentence Detector:
sentenceDetector = new
opennlp.tools.lang.english.SentenceDetector(modelFile);
I did the following steps.
1) Create a new Java project with UIMA nature.
2) Add necessary libraries (uima core, opennlp, etc.) and
descriptors (Aggregate Engine and it's dependent Annotators)
3) set the "ModeFile" parameter "Configuration Parameters" in the
Analysis Engine XML files (OpenNLPSentenceDetec, OpenNLPTokenizer,
OpenNLPTagger) to the absolute path of the corresponding model file
(e.g. /home/workspace/models/model.bin.gz). I also tried relative paths.
4) Open the CAS Visual Debugger and Load the Aggregate Engine
5) Java Error when trying to load the model file:
UnsupportedClassVersionError Error
Maybe the model file was be loaded successfully. I do get the same
error message when the model file in SentenceDetector is empty.
For any help I would be grateful.
Regards,
Toby
