springmvc spring hibernate ajax json

package com.fqq.action; import java.util.List; import javax.annotation.Resource; import javax.servlet.http.HttpServletRequest; import com.fqq.biz.MenuService; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import com.fqq.vo.Person; import com.fqq.biz.PersonService; @Controller @RequestMapping(value="/person") public class PersonController { @Resource(name="personService") private PersonService personService; @Resource(name="menuService") private MenuService menuService; @RequestMapping(value="/savePersonUI") public String savePersonUI(){ return "savePersonForm"; } @RequestMapping(value="/save") public String savePerson(Person p){ personService.savePerson(p); System.out.println("savePerson()..."); return "redirect:/person/findAllPerson"; } @RequestMapping(value="/findAllPerson") public String findAllPerson(HttpServletRequest req){ List<Person> persons = personService.findAllPerson(); req.setAttribute("persons", persons); return "personList"; } @RequestMapping(value="/deletePerson") public String deletePerson(Person p){ personService.deletePerson(p); return "redirect:/person/findAllPerson"; } @RequestMapping(value="/deletePersons") public String deletePersons(String ids){ if(ids.trim().length()>0 && ids!=null){ ids = ids.substring(0, ids.length() -1); String[] idss = ids.split(","); Person p = new Person(); for(int i=0;i<idss.length;i++){ p.setId(Integer.valueOf(idss[i])); personService.deletePerson(p); } } return "redirect:/person/findAllPerson"; } @RequestMapping(value="/updatePersonUI") public String updatePersonUI(String id,HttpServletRequest req){ Person p = personService.findPersonById(id); req.setAttribute("p", p); return "updatePersonForm"; } @RequestMapping(value="/updatePerson") public String updatePerson(Person p){ personService.updatePerson(p); return "redirect:/person/findAllPerson"; } }