SSM简易项目（增删改查）

package cn.lt.core.web.controller; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import cn.lt.core.po.Food; import cn.lt.core.service.FoodService; @Controller public class FoodController { @Autowired private FoodService foodService; @RequestMapping(value="/index", method=RequestMethod.GET) public String index(Model model){ List<Food> foods = null; foods = foodService.findAllFood(); model.addAttribute("foods",foods); return "index"; } @RequestMapping(value = "/addFood" ,method = RequestMethod.POST) public String sendMail(Model model,String name ,String price,String msg, HttpServletRequest request, HttpServletResponse response) { int success =0; Food food = new Food(); food.setMsg(msg); food.setName(name); food.setPrice(price); Date date=new Date(); SimpleDateFormat df=new SimpleDateFormat("yyyy年MM月dd日 HH:mm:ss"); food.setDate(df.format(date)); if (foodService.addFood(food)) { success=1; } try { response.getWriter().write("{\"success\":"+success+"}"); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } return "redirect:index"; } @RequestMapping(value="/delete", method=RequestMethod.GET) public String del(int id){ foodService.delFood(id); return "redirect:index"; } @RequestMapping(value="/findFoodByName.action", method=RequestMethod.GET) public String findFoodByid(String name,Model model){ Food food=null; System.out.println(name); List<Food> foods = new ArrayList<Food>(); food = foodService.findFoodByName(name); if (food!=null) { foods.add(food); }else { foods = foodService.findAllFood(); } System.out.println(foods); model.addAttribute("foods",foods); return "index"; } // // @RequestMapping(value="/findFoodByid", method=RequestMethod.GET) // public String editFoodByid(int id,Model model){ // Food food=null; // food = foodService.finFoodById(id); // model.addAttribute("food",food); // return "editFood"; // } @RequestMapping(value="/editFood", method=RequestMethod.GET) public String editUser(int param ,String name ,String price,String msg,int id,Model model){ Food food=new Food(); try { if(param == 0){ food = foodService.findFoodById(id); model.addAttribute("food",food); return "editFood"; }else if(param == 1){ food.setId(id+""); food.setMsg(msg); food.setName(name); food.setPrice(price); Date date=new Date(); SimpleDateFormat df=new SimpleDateFormat("yyyy年MM月dd日 HH:mm:ss"); food.setDate(df.format(date)); System.out.println(food); Boolean aBoolean = foodService.updateFood(food); System.out.println(aBoolean); } } catch (Exception e) { e.printStackTrace(); } return "redirect:index"; } }