Re: Problem using @SpringBean with Wicket 1.3.5

Mon, 19 Jan 2009 20:00:03 -0800 

Kent,
I am using 1.3.5 fine with springbean.
some differences that I see between your/mine is that I have the "protected" modifier. 


Mine:
        @SpringBean(name = "eventService")
        protected EventService eventService;

another difference:
Try adding a slash to the beginning of your spring path

       <param-value>classpath:/applicationContext.xml</param-value>






Do you have a bean by the name of userRegistrationService" in your  
spring context?

In your code, you are just requesting a bean of the type, not by id.


try doing a ctx.getBean("userRegistrationService") and make sure it's  
not null.


HTH
Phillip


On Jan 19, 2009, at 3:30 PM, Kent Larsson wrote:


Hi,


I've tried to solve this for several hours now, without success, but  
then

again I'm not that experienced. :-)


I have an application with Spring beans which I want to use from  
Wicket,
using @SpringBean. To see that Spring works fine I've tried using my  
bean

without the @SpringBean annotation. By having

   @Override
   protected void init() {
       super.init();

       ctx = new  
ClassPathXmlApplicationContext("applicationContext.xml");

   }

   public UserRegistrationService getUserRegistrationService() {

       return (UserRegistrationService)  
BeanFactoryUtils.beanOfType(ctx,

UserRegistrationService.class);
   }


In my class which extends WebApplication (my Application class). It  
works
fine that way! So it must have something to do with how I try to use  
the

@SpringBean annotation.

First I have

   @Override
   protected void init() {
       super.init();
       addComponentInstantiationListener(new
SpringComponentInjector(this));
   }

In my Application class and in my web.xml I have added

   <context-param>
       <param-name>contextConfigLocation</param-name>
       <param-value>classpath:applicationContext.xml</param-value>
   </context-param>

   <listener>


<listener- 
class>org.springframework.web.context.ContextLoaderListener</ 
listener-class>

   </listener>

and in my Page where I try to use the UserRegistrationService I have

   @SpringBean
   UserRegistrationService userRegistrationService;

   /**
    * Constructor...
    */
   public UserRegistrationPage(final PageParameters parameters) {
       add(new Label("message",
userRegistrationService.takeSomeString("hello service") ));
   }

But when I try this I get

" WicketMessage: Can't instantiate page using constructor public

net 
.mycompany 
.webcarrot 
.presentation 
.pages.UserRegistrationPage(org.apache.wicket.PageParameters)

and argument "


I have a complete stack trace at pastebin (to not pollute the mail  
with it)

http://pastebin.com/f7c12d56c


I hope someone more experienced with Wicket than me knows what's  
going on
here. I've tried to solve it for a couple of hours, but I can't find  
any
faults in it (I'm trying to follow the instructions in Wicket in  
Action).



Thank you for your time reading! Any help is HIGHLY appreciated!  
Have a nice

day!

Best regards, Kent
























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