org.apache.jasper.el.ELContextImpl cannot be cast to org.apache.jasper.runtime.ELContextImpl

Question

I have a web service project implemented in java and it also contains jsp pages. I deploy it on jetty 8.1.5 on my machine and it works normally. But when I deploy on a windo

Answer 1

If the folder /WEB-INF/lib of your webapp does not contain a jasper.jar (see BalusC' answer), please check whether another webapp is running in your container. Then check if that webapp contains a jasper.jar in its folder /WEB-INF/lib. This happened to us. Be removing jasper.jar from those webapps (sic!), the problem could be solved. Obviously, the webapps are not that isolated for meach other as they should be. The problem appeared as we switched from Tomcat6 to Tomcat7 and jasper.jar (version 6) was bundled accidently with one of our webapps.