基于SSM的餐厅收银系统

package controller; import java.util.ArrayList; import java.util.List; import javax.annotation.Resource; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpSession; import javax.sound.midi.Soundbank; 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.RequestParam; import org.springframework.web.bind.annotation.ResponseBody; import com.alibaba.fastjson.JSON; import dao.dish.DishMapper; import org.springframework.web.servlet.ModelAndView; import pojo.*; import pojo.dish.Dishes; import pojo.DeskPager; import pojo.Pager; import service.desk.DeskService; import tools.PagerTools; import tools.RedisUtil; @Controller public class DeskController { @Autowired private DeskService deskService; @Resource(name="redisUtil") private RedisUtil redisUtil; @Autowired private DishMapper dishMapper; //显示桌位列表页面 @RequestMapping(value="/desklist.html") public String showDeskList(Model model, HttpSession session, @RequestParam(required=false)String show){ if(session.getAttribute("user")==null){//权限控制 return "redirect:login.html"; } List<Desk> desks=deskService.getDesks(); model.addAttribute("desks", desks); if(!"desk".equals(show)){ return "redirect:desklist.html?show=desk"; }else{ return "/desk/desklist"; } } //桌位详情页面 @RequestMapping(value="/deskinfo.html") public String showDeskInfo(@RequestParam(required=false)String id,Model model,HttpSession session){ if(session.getAttribute("user")==null){//权限控制 return "redirect:login.html"; } Desk desk=null; int status=0; String deskCode=null; if(id!=null && id!=""){ desk=deskService.getDeskById(id); } if(desk!=null){ status=desk.getStatus(); deskCode=desk.getDeskCode(); } if(status==1){//如果桌位状态为空 if(deskCode!=null && deskCode!=""){//传过来的桌位编号不为空时 redisUtil.del(deskCode);//删除缓存内的桌位菜单信息 } }else if(status==2){//如果桌位状态为未买单 if(deskCode!=null && deskCode!=""){//传过来的桌位编号不为空时 List<DeskInfo_detail> deskDish=redisUtil.getList(deskCode);//从缓存取出当前桌位的点菜信息 Double totalMoney=0.0;//总计 if (deskDish==null || deskDish.size()==0) { deskDish=new ArrayList<DeskInfo_detail>(); redisUtil.addList(deskCode, deskDish); } for (int i = 0; i < deskDish.size(); i++) { if(deskDish.get(i).getCost()!=null){ totalMoney+=deskDish.get(i).getCost(); } } model.addAttribute("totalMoney", totalMoney); model.addAttribute("deskDish", deskDish); } } List dishes=redisUtil.getList("allDishes");//先从缓存中查询 if(dishes == null || dishes.size()==0){//如果缓存中没有则从数据库查 dishes=dishMapper.getDish(); redisUtil.addList("allDishes",dishes); } Dishes dishesUtil=Dishes.getDishes();//菜单工具类 dishesUtil.setAllDish(dishes);//将查询出来的菜品放在工具类中 dishesUtil.count();//格式化菜品（分类） //session.setAttribute("dishUtil",dishesUtil); model.addAttribute("desk", desk); return "/desk/deskinfo"; } //ajax点菜 @RequestMapping("/selectDish.do") @ResponseBody public Object selectDish(DeskInfo_detail deskInfo_detail,@RequestParam(required=false)String deskCode){ List<DeskInfo_detail> deskDish=redisUtil.getList(deskCode); if(deskDish==null){ deskDish=new ArrayList<DeskInfo_detail>(); System.out.println("------------------------------新建桌位号"+deskCode+"菜单列表------------------------------"); } boolean addFlag=true;//标记是否有相同的菜品，默认为true表名不存在相同菜名 for (int i = 0; i < deskDish.size(); i++) { if(deskDish.get(i).getDishName().equals(deskInfo_detail.getDishName())){//如果存在相同的菜品 int oldNum=deskDish.get(i).getDishNum();//得到原来的数目 String newContent=deskInfo_detail.getContent(); int newNum=oldNum+deskInfo_detail.getDishNum();//将新添加的数目和原来的数目相加得到新数目 deskDish.get(i).setDishNum(newNum);//修改数目 deskDish.get(i).setCost(newNum*deskDish.get(i).getPrice());//修改小计 deskDish.get(i).setContent(newContent); addFlag=false;//存在相同的，将标记设置为false break; } } if(addFlag){//如果不存在相同的菜品，addFlag的值为true deskDish.add(deskInfo_detail); } redisUtil.addList(deskCode, deskDish);//更新缓存 return JSON.toJSONString(deskDish); } //更改桌位状态 @RequestMapping("/changeStatus.do") @ResponseBody public Object changeDeskStatus(Desk desk){ boolean flag=false; if(desk!=null){ if(desk.getStatus()!=null && desk.getStatus()!=2 ){ desk.setStatus(2); flag=deskService.updateDeskStatus(desk); }else{ return JSON.toJSONString("OK"); } } if(flag){ return JSON.toJSONString("OK"); }else{ return JSON.toJSONString("NO"); } } //更改桌位 @RequestMapping("/changeDesk.do") @ResponseBody public Object changeDesk(Desk desk){ boolean flag=deskService.updateDesk(desk); String str=""; if(flag){ str="true"; }else{ str="false"; } return JSON.toJSONString(str); } //更改菜品 @RequestMapping("/updateDish.do") @ResponseBody public Object updateDish(DeskInfo_detail deskInfo_detail,@RequestParam(required=false)String deskCode){ List<DeskInfo_detail> deskDish=redisUtil.getList(deskCode); for (int i = 0; i < deskDish.size(); i++) { if(deskDish.get(i).getDishName().equals(deskInfo_detail.getDishName())){//找到相同的菜品 String newContent=deskInfo_detail.getContent();//得到新的备注 int newNum=deskInfo_detail.getDishNum();//得到修改过后的数目 deskDish.get(i).setDishNum(newNum);//修改数目 deskDish.get(i).setCost(newNum*deskDish.get(i).getPrice());//修改小计 deskDish.get(i).setContent(newContent);//修改备注 redisUtil.addList(deskCode, deskDish);//更新缓存 break; } } return JSON.toJSONString(deskDish); } //删除菜品 @RequestMapping("/delDish.do") @ResponseBody public Object delDish(DeskInfo_detail deskInfo_detail,@RequestParam(required=false)String deskCode){ List<DeskInfo_detail> deskDish=redisUtil.getList(deskCode); for (int i = 0; i < deskDish.size(); i++) { if(deskDish.get(i).getDishName().equals(deskInfo_detail.getDishName())){//找到相同的菜品 deskDish.remove(i);//删除该菜品 redisUtil.addList(deskCode, deskDish);//更新缓存 break; } } return JSON.toJSONString(deskDish); } @ResponseBody @RequestMapping("/alldish.do") public ModelAndView showAlldish(ModelAndView modelAndView, Pager pager ){ Dishes dishes=Dishes.getDishes(); if("allDish".equals(pager.getOpr())){ pager.setTotalCount(dishes.getAllDishCount()); pager.setPageSize(PagerTools.dishMenuPagerSize); pager.count(); List<Dish> list=dishes.getAllDish(pager); pager.setList(list); }else if("soup".equals(pager.getOpr())){ pager.setTotalCount(dishes.getSoupsCount()); pager.setPageSize(PagerTools.dishMenuPagerSize); pager.count(); List<Dish> list=dishes.getSoups(pager); pager.setList(list); }else if("fry".equals(pager.getOpr())){ pager.setTotalCount(dishes.getFrysCount()); pager.setPageSize(PagerTools.dishMenuPagerSize); pager.count(); List<Dish> list=dishes.getFrys(pager); pager.setList(list); }else if("other".equals(pager.getOpr())){ pager.setTotalCount(dishes.getOthersCount()); pager.setPageSize(PagerTools.dishMenuPagerSize); pager.count(); List<Dish> list=dishes.getOthers(pager); pager.setList(list); }else if("drink".equals(pager.getOpr())){ pager.setTotalCount(dishes.getDrinksCount()); pager.setPag