This will probably come from a dependency. One source can be logback, you have to use 1.4.x or 1.5.x (see https://logback.qos.ch/news.html). Logback 1.3 has a javax.servlet.ServletContainerInitializer, which in fact loads a javax dependency.
Check your dependencies, they might have a file in the jar in the META-INF/services/<whateverfilename>. You can try to put a breakpoint in the error and go up in the stack to see who is loading this class. On Wed, Jul 24, 2024 at 12:55 PM COURTAULT Francois <francois.courta...@thalesgroup.com.invalid> wrote: > THALES GROUP LIMITED DISTRIBUTION to email recipients > > Hello, > > One of our teams is migrating an application using TomEE 8.0.16 to 9.1.3. > Unfortunately, they get this: > org.apache.tomcat.util.digester.Digester.startElement Begin event threw > exception > java.lang.NoClassDefFoundError: > javax/servlet/http/HttpServletResponse > at > java.base/java.lang.Class.getDeclaredConstructors0(Native Method) > at > java.base/java.lang.Class.privateGetDeclaredConstructors(Class.java:3373) > > Of course the application code has been updated in order to replace javax > packages to jakarta packages. > The libraries used have also been updated to be compatible to Jakarta 9.1. > > Any idea where this issue comes from ? > > Best Regards. > > > >
