we would like to use the dmn-engine within our multi-project architecture.
I include the camunda-engine-dmn, 7.7.0 in maven:
Compiling and first calls wer leading to no problems, dmn-example.xml was correctly executed! So war everythings looks nice. But the first call to a jsp-page creates following error and the application stops:
//Login with method execute.
2017-07-08 20:29:02,852 ERROR [http-bio-8090-exec-3] [Sk=170708-202902124_890@50, Nutzer=guest] org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/servicestelle].[jsp] Servlet.service() for servlet jsp threw exception
java.lang.ClassCastException: de.odysseus.el.ExpressionFactoryImpl cannot be cast to javax.el.ExpressionFactory
at javax.el.ExpressionFactory.newInstance(ExpressionFactory.java:230) ~[el-api.jar:2.2.FR]
at javax.el.ExpressionFactory.newInstance(ExpressionFactory.java:149) ~[el-api.jar:2.2.FR]
The problem are the different used El-Implementations? How can we solve the problem when we include camunda-engine-dmn-7.7.0.jar. The dependencies is camunda-engine-dmn-7.7.0.jar to juel-impl are fixed and other moduls
in our project are fixed to tomcat-el-api.
I tried to exclude the juel-api but without success.
Does anybody has an idea how to solve the problem?