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Deployment & Runtime

Watching Frank!Framework Startup​

  • INFO [main] org.apache.catalina.core.ApplicationContext.log Starting IbisContext — framework startup begins
  • INFO [main] org.apache.catalina.startup.Catalina.start Server startup in [xxx] milliseconds — ready to receive HTTP requests

Custom Code: IllegalAccessError Between Classes​

Problem: IllegalAccessError: failed to access class when custom classes are loaded by different classloaders (URLClassLoader vs DirectoryClassLoader).

Cause: The JVM treats classes from different classloaders as separate unnamed modules, blocking non-public access.

Fix: Make all custom Java classes public, or define helper classes as inner classes within the custom pipe.

Credential Factory Not Working​

Problem: HTTP 401 from external system despite configured credentials.

Fix: Check Application Server startup logs (e.g., ${catalina.home}/logs) for credential factory initialization errors. See the FF! Reference for credential providers for configuration details. Example:

WARNING [main] org.frankframework.credentialprovider.CredentialFactory.tryFactory Cannot instantiate CredentialFactory [org.frankframework.credentialprovider.FileSystemCredentialFactory]

These errors do not appear as console warnings.

Flow Diagram Images​

Property flow.adapter.dir holds the directory where flow diagrams are saved. Find its value under "Environment Variables" in the Frank!Console.