java ee - Glassfish4 and JERSEY providers scanning -

when i'm deploying app glassfish 3, there is:

info: scanning root resource , provider classes in web app resource paths: 

and in case use:

<servlet-class>com.sun.jersey.spi.container.servlet.servletcontainer</servlet-class> 

in web.xml, fine. providers , root resources classes found.

but when same app deploying glassfish 4, there no "scanning" providers , root resource classes, , causes classes not registered. 1 change servlet class to

org.glassfish.jersey.servlet.servletcontainer 

wich glassfish4 familiar. why happen? should force scanning?

add web.xml.

<web-app>     <servlet>         <servlet-name>jersey web application</servlet-name>         <servlet-class>org.glassfish.jersey.servlet.servletcontainer</servlet-class>         <init-param>             <param-name>jersey.config.server.provider.packages</param-name>             <param-value>org.foo.rest;org.bar.rest</param-value>         </init-param>         ...     </servlet>     ... </web-app>