Dynamic Web Module 3.0 — 3.1

Question

I have a mavenized codebased configured Spring 3.2.4 web app. When I build the app with Maven/pom.xml first I got an error that web.xml is missing. first I tried to create

Answer 1

In a specific case the issue is due to the maven-archetype-webapp which is released for a dynamic webapp, faceted to the ver.2.5 (see the produced web.xml and the related xsd) and it's related to eclipse. When you try to change the project facet to dynamic webapp > 2.5 the src folder structure will syntactically change (the 2.5 is different from 3.1), but not fisically.

This is why you will face in a null pointer exception if you apply to the changes.

To solve it you have to set from the project facets configuration the Default configuration. Apply the changes, then going into the Java Build Path you have to remove the /src folder and create the /src/main/java folder at least (it's also required /src/main/resources and /src/test/java to be compliant) re-change into the required configuration you desire (3.0, 3.1) and then do apply.