Select Paper Controller

package com.education.vidyarthi.online;

import java.util.Map;

import javax.servlet.http.HttpSession;
import javax.validation.Valid;


import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;

import com.education.vidyarthi.online.model.Language;
import com.education.vidyarthi.online.model.User;
import com.education.vidyarthi.online.service.LanguageService;



@Controller
@RequestMapping("/user/selectpaper")
public class SelectPaperController {
   
    @Autowired
    private LanguageService languageService;

    @RequestMapping(method = RequestMethod.GET)
    public String showSelectPaper(Map model, HttpSession session) {
        if ((session.getAttribute("userEmail")) == null) {
            User user = new User();
            model.put("user", user);
            return "/user/userlogin";
        }
        Language language = new Language();
        model.put("language", language);
        model.put("languagelist", languageService.listLanguages());
        return "/user/selectpaper";
    }

    @RequestMapping(method = RequestMethod.POST)
    public ModelAndView processSelectPaper(@Valid Language language, Map model,
            HttpSession session) {
        if ((session.getAttribute("userEmail")) == null) {
            return new ModelAndView("redirect:userlogin.html");
        }
        Long languageId = language.getLanguageId();
        if (languageId == -1) {
            model.put("languagelist", languageService.listLanguages());
            model.put("errormessage", "Select Language");
            return new ModelAndView("/user/selectpaper");
        }
        return new ModelAndView("redirect:questionpaper.html?languageId="
                + language.getLanguageId());
    }
}

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