@Controller
public class HtmlPageController {
    @RequestMapping(value = "/some/path/test", method = RequestMethod.GET)
    public String getTestPage() {
        return "test.html";
    }
}

@Controller
public class HtmlPageController {
    @RequestMapping(value = "/some/path/test", method = RequestMethod.GET)
    public String getTestPage() {
        return "test";
    }
}