Completing the Stack - Stripes...and Java Web Development is Fun Again - page 254

bean context is also a Stripes extension, called the action bean context
factory. We can easily extend the Stripes default implementation, obtain
the action bean context object that it creates, and inject dependen-
cies before returning it. Stripes provides a convenient SpringHelper.inject-
Beans ( ) method to detect annotations and then inject @SpringBean

dependencies:

Download email_25/src/stripesbook/ext/MyActionBeanContextFactory.java

package stripesbook.ext;
public class MyActionBeanContextFactory
extends DefaultActionBeanContextFactory

{

@Override
public ActionBeanContext getContextInstance(
HttpServletRequest req, HttpServletResponse resp)
throws ServletException

{

ActionBeanContext actionBeanContext
= super .getContextInstance(req, resp);

ServletContext servletContext =
StripesFilter.getConfiguration().getServletContext();

SpringHelper.injectBeans(actionBeanContext, servletContext);

return actionBeanContext;

}

}

@SpringBean now works in MyActionBeanContext :

Download email_25/src/stripesbook/ext/MyActionBeanContext.java

public class MyActionBeanContext extends ActionBeanContext {
@SpringBean private FolderDao folderDao;
@SpringBean private UserDao userDao;

}

We can also use this technique to inject Spring dependencies into other
non-action-bean Stripes objects—type converters, formatters, and so
on. Subclass the Stripes default factory, call the superclass method to
create the object, and use SpringHelper.injectBeans ( ) on the object before
returning it. Besides a ServletContext object, injectBeans ( ) also accepts
an ActionBeanContext or a Spring ApplicationContext to be able to load
the components from Spring.