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Editorial Team
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Asked: 2026-06-01T16:21:45+00:00

The error is: SEVERE: Servlet.service() for servlet [jsp] in context with path [] threw

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The error is:

SEVERE: Servlet.service() for servlet [jsp] in context with path [] threw exception      [Unable to compile class for JSP] with root cause
java.lang.ClassCastException: de.odysseus.el.ExpressionFactoryImpl cannot be cast to javax.el.ExpressionFactory
at javax.el.ExpressionFactory.newInstance(ExpressionFactory.java:180)
at javax.el.ExpressionFactory.newInstance(ExpressionFactory.java:107)
at org.apache.jasper.compiler.PageInfo.<init>(PageInfo.java:79)
at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:110)
    .....

The project is using a war overlay, in which the overlaid project has the juel-impl jar, which is necessary for its use of shindig. Any way to use jstl in the child project jsp pages?

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1 Answer

  1. Editorial Team

    Seems you have two rivaling EL APIs in your class path, tomcat’s and another one from your application. Your war file must not contain an el-api.jar or juel-api.jar. Make sure to exclude those dependencies.

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