Re: Tomcat 9, ClassCast exception

On 21/05/2025 13:44, Zdeněk Henek wrote: Hello, I am getting these errors in one of our systems: java.lang.ClassCastException: class com.sun.mail.handlers.text_html cannot be cast to class javax.activation.DataContentHandler (com.sun.mail.handlers.text_html is in unnamed module of loader org.ap

Re: Tomcat 9, ClassCast exception

I log classes when loaded into a separate log file. I am sure classes are loaded from expected jar files The files are 4 times because I have four web applications in the system. $ grep javax.activation.DataContentHandler classloaded.log [5436.540s][info][class,load] javax.activation.DataContentHa

Tomcat 9, ClassCast exception

Hello, I am getting these errors in one of our systems: java.lang.ClassCastException: class com.sun.mail.handlers.text_html cannot be cast to class javax.activation.DataContentHandler (com.sun.mail.handlers.text_html is in unnamed module of loader org.apache.catalina.loader.ParallelWebappClassLoa