Question

I have a Spring MVC Controller class (bean):

@Controller
@RequestMapping("/index.jsp")
public class EjbCaller {

    @Autowired
    private InfoBean infoBean;

    public EjbCaller() {
        System.out.println("creating !!!!!!!!!!!!!!!!!!!!!!!!!!");
    }

    @ModelAttribute("textFromService")
    public String call() {
       System.out.println("!!!!!!!!!!!!!!!!!!!1 gogogogog");
       return infoBean.getRefSampleService().doService();
    }    
}

How to know that @RequestMapping(“/index.jsp”) fires well when I go to the index.jsp? Because i do not know if I’m putting right value to the @RequestMapping annotation, or maybe something wrong with @ModelAttribute because it does not fire as well..

In my index.jsp i have code like this:

<p>
    <span>from SampleService: ${textFromService} </span>
</p>

About my usage/settgins:

I have DispatcherServlet in web.xml, i have , bit it does not work. I guess ModelAndView this is old approach to use MVC, @ModelAttribute this is a new approach as i understand. So that’s why i use @ModelAtrribute.

I have output in the jbossConsole from EJBCaller from constructor but not when call()-method is calling that’s why i do not know if this method runs or not.

Answer 1

Controllers are just one part of the MVC equation, you should have:

Controllers with @RequestMapping annotations noting which URLs they handle, they (essentially) return views. In Spring MVC, these are done with ViewResolvers, the simplest is:

<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/"/>
    <property name="suffix" value=".jsp"/>
</bean>

So then you can do something like

@RequestMapping(value="/test/{myParam}", method=RequestMethod.GET)
public ModelAndView myMethod(@PathVariable("myParam") String param) { 
     ModelAndView mv = new ModelAndView();
     mv.setViewName("index"); // now put index.jsp in /WEB-INF/views
     // try passing the input back to the view so you can play around
     // with the view/parameter handling
     mv.addObject("variableName", param); 
}

In your Spring config file, there are a bunch of options, I often do:

<mvc:annotation-driven />
<bean name="someController" class="..."/>

This will then get picked up.

Don’t forget your org.springframework.web.servlet.DispatcherServlet in web.xml