[java] Spring ModelAndView 로 파라미터 전달하기

import javax.servlet.http.HttpServletRequest;
import kr.go.binet.common.base.RedirectURL;
import org.apache.commons.codec.binary.Base64;
import org.apache.commons.lang3.StringUtils;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.servlet.ModelAndView;
 
public ModelAndView sendMsg(Model model, HttpServletRequest request){
 
    String msg = "메시지 내용을 입력하세요";
    msg = new String(Base64.encodeBase64(msg.getBytes()));
    RedirectURL rurl = new RedirectURL(request,"/uri.do?msg="+msg);
    return rurl.getReturnUrl();
 
}
 
public String receiveMsg(Model model, HttpServletRequest request){
 
    if (StringUtils.isNotEmpty(request.getParameter("msg"))) {
        String decodeMsg = new String(Base64.decodeBase64(request.getParameter("msg").getBytes()));
        model.addAttribute("msg", decodeMsg);
    }
 
    return "/msgList";
}