NoClassDefFoundError: org/citydb/gui/plugin/view/ViewExtension when running the Importer/Exporter CLI

[spechtx]

Describe the bug:
When attempting to use the Importer/Exporter command line interface (version 5.3.0), a java.lang.NoClassDefFoundError is thrown with the message org/citydb/gui/plugin/view/ViewExtension.

To Reproduce:
Steps to reproduce the behavior:

Run the following command:

java -jar lib/impexp-client-cli-5.3.0.jar import --duplicate-log=/mnt/data/temp/3dcitydb/duplicate.log --import-log=/mnt/data/temp/import.log --input-encoding=utf-8 --log-file=/mnt/data/temp/3dcitydb/logfile.log --log-level=info --import-mode=import_all --worker-threads=16 --db-type=postgresql --db-host=localhost --db-port=5434 --db-name=3DCITYDB --db-schema=citydb --db-username=***** --db-password=***** /mnt/data/temp/3dcitydb/hh/

See error:

[12:22:15 INFO] Starting 3D City Database Importer/Exporter, version 5.3.0
[12:22:15 INFO] Loading plugins
Exception in thread "main" java.lang.NoClassDefFoundError: org/citydb/gui/plugin/view/ViewExtension

Expected behavior:
The Importer/Exporter should start and load the plugins without any exceptions.

Environment (please complete the following information):

OS: Ubuntu Server 22.04
Java version: OpenJDK 11
Database: PostgreSQL 15]

[spechtx]

Workaround:
Interestingly, when running the command with the client GUI, instead the CLI, the import proceeds without any issues:
java -jar lib/impexp-client-gui-5.3.0.jar import --duplicate-log=/mnt/data/temp/3dcitydb/duplicate.log --import-log=/mnt/data/temp/import.log --input-encoding=utf-8 --log-file=/mnt/data/temp/3dcitydb/logfile.log --log-level=info --import-mode=import_all --worker-threads=16 --db-type=postgresql --db-host=localhost --db-port=5434 --db-name=3DCITYDB --db-schema=citydb --db-username=***** --db-password=***** /mnt/data/temp/3dcitydb/hh/

This is unexpected, as I am working in a shell environment and should not require the GUI version to run the import.

[clausnagel]

Seems like you have a plugin in your plugins folder that requires a GUI. Delete the plugin from the plugins folder to prevent it from being loaded at startup.

Btw, I recommend starting the CLI using the impexp executable in the bin folder rather than using the lib/impexp-client-cli-5.3.0.jar directly.

[spechtx]

Thank you very much for your helpful reply! It makes sense that a plugin requiring a GUI could have caused the issue when using the CLI. Turns out, I was following some older documentation, which is where I got the lib folder usage from...

Have a nice day!

[clausnagel]

Added proper log messages in case a plugin cannot be loaded through #287