getting Servletcontext in a class

[Elizabath Lima]

Hi

I would like to get an attribute in WebApplicationContext in DWRFacade class. I extented HttpServlet to DWRFacade class. But i'm getting

WARNING: Method execution failed:
java.lang.NullPointerException
at javax.servlet.GenericServlet.getServletContext(GenericServlet.java:159)
at com.scs.rb.web.utils.DWRFacade.getCounties(DWRFacade.java:23)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

I'm sure abt the values in the servletCOntext.

Hw i'll get the values from the servletContext..

Thanks in advance

[Peter Chase]

Is your servlet initialised?

[struts lover]

Post your code. So that, we can have idea about the problem.

[Bear Bibeault]

"struts lover",

There aren't many rules that you need to worry about here on the Ranch, but one that we take very seriously regards the use of proper names. Please take a look at the JavaRanch Naming Policy and adjust your display name to match it.

In particular, your display name must be a first and a last name separated by a space character, and must not be obviously fictitious.

Thanks!
bear
JavaRanch Sheriff

[Elizabath Lima]

Hi

I'm pasting my code for the class

public class DWRFacade extends HttpServlet {

public Set getCounties(int stateId){

Set setCounties = null;
List lstStateMaster= (List)getServletContext().getAttribute("lstStateMaster");
StateMaster state;
for(int i=0; i<lstStateMaster.size();i++){
state = (StateMaster) lstStateMaster.get(i);
if(state.getStateId() == stateId){
setCounties = (Set) state.getCountyMasters();
}
}
return  setCounties;

}
 
and this attribute is set in a servlet, that code is here
 
public class RBDispatcherServlet extends DispatcherServlet {
    private LookupService lookupService;
    
    private static final long serialVersionUID = -6825845016865353168L;

protected WebApplicationContext initWebApplicationContext() throws BeansException
{
WebApplicationContext ctx = super.initWebApplicationContext();
 System.out.println("InitWebApplicationContext Santhosh");
 DBUtils.setWebApplicationContext(ctx); 

return ctx;
}
 

protected void initFrameworkServlet() throws ServletException, BeansException {

super.initFrameworkServlet();
WebApplicationContext ctx = super.initWebApplicationContext();
lookupService= (LookupService)  ctx.getBean("lookupService");
 ctx.getServletContext().setAttribute("lstStateMaster",lookupService.getAllStates());
 ctx.getServletContext().setAttribute("lstResidenceTypes",lookupService.getAllResidenceTypes());
 ctx.getServletContext().setAttribute("lstPropertyTypes",lookupService.getAllPropertyTypes());
 ctx.getServletContext().setAttribute("lstCardTypes", lookupService.getAllCardTypes());

}

[Edit by Dave - code tags added]
[ April 07, 2006: Message edited by: David O'Meara ]

[David O'Meara]

I think Peter may be right, it looks like your servlet has not been initialised. You could try setting it to initialise on startup in your web.xml, that may help things.

[Elizabath Lima]

Hi David,

Thanks for your reply.
I'm developing this appication in Spring and I'm loading all the necessary xmls using ContextLoaderListener. And the DWRFacade class's bean is defined in one of the xml too.

By the time i tried extending the RBDispatcherServlet to the DWRFacade class, but that too doesn't work.

Can you please tell me what is wrong in my deeds?