I have an Spring MVC 6 app deployed in Tomcat 10.1. the context root of the app is /codereaper as that is the name of the war file. The app starts successfully with no errors.

I am using a UrlBasedViewResolver with the following properties.

<bean id="viewResolver"           class="org.springframework.web.servlet.view.UrlBasedViewResolver">           <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />          <property name="prefix" value="/WEB-INF/pages/" />                   <property name="suffix" value=".jsp" />              </bean>

and the home.jsp in the /WEB-INF/paqes/ folder in the war file If I want my MainController to be as follows to render the home page for /codereaper/home what should the MainController annotation mapping be.

Here is what I am trying in my MainController. So the context root for my app is /codereaper and I THINK that the Main controller annotation of / would equate to /codereaper/home since the / is relative and postpended to the Context root of the app.

I asked the Tomcat folks and they thought that this was correct as the / is relative to the Container context root.

In a previous post, I was flamed for suggesting this and was told that I needed to add /codereaper to all of my Controllers to achieve this effect.

@Controller @RequestMapping("/") 
public class MainController {   
static Logger logger = LogManager.getLogger(MainController.class);      
@RequestMapping("/home")    
public ModelAndView home(Model model, HttpServletRequest request, HttpServletResponse response)
 {      
ModelAndView mav = new ModelAndView();      
MainContent mainContent = new MainContent();        
String username;        
model.addAttribute("userName", "Username");         
mav.setViewName("home.jsp");        
return (mav);   
}

I have tried adding /codereaper to the MainController annotation and also just a /.

I always get a 404 and in my tomcat logs I see:

192.168.0.28 – – [10/Sep/2024:18:07:03 -0400] “GET /codereaper/home HTTP/1.1” 404 7651

And in app logs I see

DispatcherServlet [http-nio-80-exec-7] GET “/codereaper/home”, parameters={}, headers={masked} in DispatcherServlet ‘codereaperServlet’

h.SimpleUrlHandlerMapping [http-nio-80-exec-7] Mapped to HandlerExecutionChain with [org.springframework.web.servlet.resource.DefaultServletHttpRequestHandler@2b3472a0] and 2 interceptors

DispatcherServlet [http-nio-80-exec-7] No view rendering, null ModelAndView returned.

DispatcherServlet [http-nio-80-exec-7] Completed 404 NOT_FOUND, headers={}

The app redirects to my 404 error page and I put the following in the JSP

<h1 class="text-dark fw-bolder" align="center">Page Not Found Error - ${pageContext.request.contextPath} </h1>

and it renders Page Not Found Error – /codereaper so I know the context root is correct.

BTW this paradigm works in a Spring MVC 4 app with Tomcat 9.0