ModeAndViewジャンプ時404

package handlers;

import Model.User;
import org.springframework.http.HttpRequest;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;

//    
import org.springframework.web.servlet.*;

@RequestMapping("/HelloWorld")
@Controller
public class HelloWorld {
    private static final String SUCCESS="success";

    @RequestMapping("TestModelAndView")
    public ModelAndView testModelAndView(){
        ModelAndView mv=new ModelAndView(SUCCESS);
        mv.addObject("name","miao");
        return mv;
    }
}

org.springframe ew.web.servlet.ModelAndViewを導入すべきです.
実際にorg.springframe ewek.web.portlet.ModelAndViewを導入します.