I faced the same problem few days ago with m2eclipse (without WTP integration add on available via m2eclipse-extras) on Eclipse Indigo. I created a Maven Web Module and manually added the Dynamic Web Module facet to it. When I deployed it on Eclipse WST Tomcat Server, it appeared that my Maven dependencies are not getting pushed to the server when the project is published to it.
The solution was simple. Right Click on your web project in Project Explorer -> select 'Properties'. Under project properties, select 'Deployment Assembly'.
The Deployment Assembly property page shows the content that will be published as a assembled artifact by Eclipse to the server. You need to tell Eclipse that you want all your Maven dependencies to be published too.
To do that, click 'Add' button, then select 'Java Build Path Entries'. Click Next and select Maven Dependencies. This will publish the Maven dependency JAR files to the lib folder when Eclipse publishes your project to WST server.
This approach worked for me.
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