The server does not support version 3.0 of the J2EE web module specification

Question

The server does not support version 3.0 of the J2EE web module specification.

I am getting this error when I execute an application in

Answer 1

The ...serverdef and plugin.xml configuration files for the server that you've set up in Eclipse define what versions of the specifications that the server supports.

Answer 2

The error message is quite understandable - you are attempting to execute an application that requires the server to support Servlet Spec 3.0 when it doesn't. You must therefore run the application on a server that complies with that version of the Servlet Specification.

As far as I know you have the following options at your disposal, at the time of writing this:

• Apache Tomcat 7.0
• Glassfish 3.1
• IBM WebSphere 8
• JBoss 6 and 7
• Resin 4

Answer 3

right click on your project -> Properties --> project Facets then you must change Dynamic Web Module from 3 to 2.5

Answer 4

From you web project try to downgrade the Dynamic Web Module: project -> Properties -> project Facets

If this has no effect, try to downgrade the EAR from your EAR project: project -> Properties -> project Facets

If you can't change the versions from eclipse, edit manually the file org.eclipse.wst.common.project.facet.core.xml