Spring/Hibernate Entity Management Web Interface/UI

Naked Objects, OpenXava and Spring Roo, all can do what you are looking for.

Looks like LightAdmin pluggable administration interface for Spring/JPA based applications would be a good choice for you. It has a built-in Java DSL for interface configuration and the only thing you need to do is to download a jar or declare Maven dependency, enable your domain administration through web.xml (point to package containing your JPA entities) and create @Administration configuration for the entity.

Here is an example of configuration:

@Administration( User.class )
public class UserAdministration {

  public static EntityMetadata configuration(EntityMetadataBuilder configurationBuilder ) {
    return configurationBuilder.nameField( "firstname" ).build();
  }

  public static ScreenContext screenContext( ScreenContextBuilder screenContextBuilder ) {
    return screenContextBuilder
           .screenName( "Users Administration" )
           .menuName( "Users" ).build();
  }

  public static FieldSet listView( final FieldSetBuilder fragmentBuilder ) {
    return fragmentBuilder
           .field( "firstname" ).caption( "First Name" )
           .field( "lastname" ).caption( "Last Name" ).build();
  }

I'd try Grails to do this. It's built for fast development of CRUD web applications. It's based on Groovy, Spring, and Hibernate.