如何使用Java SSM实现在线点餐系统

小编给大家分享一下如何使用Java SSM实现在线点餐系统，相信大部分人都还不怎么了解，因此分享这篇文章给大家参考一下，希望大家阅读完这篇文章后大有收获，下面让我们一起去了解一下吧！

介绍

项目编号：BS-PT-022

本项目基于SSM框架实现在线点餐系统，主要实现系统的在线点餐功能。

开发工具：IDEA/ECLIPSE

数据库：MYSQL5.7

后台技术：SSM

前台技术：CSS，JS，JSP

应用服务器：TOMCAT8.5

效果图

下面展示一下系统功能：

首页

我的餐车

订单

用户中心

会员登陆

会员注册

后台登陆

菜单管理

菜单类别管理

公告信息管理

订单管理

信息修改

核心代码

package com.example.meal_ordering_system.controller; import com.example.meal_ordering_system.entity.Admin;import com.example.meal_ordering_system.entity.Menus;import com.example.meal_ordering_system.entity.Types;import com.example.meal_ordering_system.service.AdminService;import org.apache.ibatis.annotations.Param;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.beans.factory.annotation.Qualifier;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.bind.annotation.RestController; import javax.annotation.Resource;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpSession;import java.util.List; /** * (Admin)表控制层 * * @author znz * @since 2021-02-04 12:51:19 */@Controller@RequestMapping("admin")public class AdminController {    /**     * 服务对象     */    //自动注入业务层的AdminService类    @Autowired    @Qualifier("adminService")    private AdminService adminService;     //修改管理员信息    @RequestMapping("update")    public String update(Admin admin) {        adminService.update(admin);        return "/admin/menus";    }      @RequestMapping(value = "/login",method = RequestMethod.GET)    public String toLogin(){        return  "/admin/index";    }     //login业务的访问位置为/admin/login    @RequestMapping(value = "/login",method = RequestMethod.POST)    public String login(Admin admin, HttpServletRequest request,HttpSession session){        //调用login方法来验证是否是注册用户        boolean loginType = adminService.login(admin.getName(),admin.getPwd());        if(loginType){            //如果验证通过,则将用户信息传到前台            request.setAttribute("admin",admin);            session.setAttribute("admin_session",admin);            //并跳转到success.jsp页面            return "/admin/main";        }else{            //若不对,则返回            request.setAttribute("message","用户名密码错误");            return "/admin/index";        }    }     //登出,地址/admin/logout    @RequestMapping("logout")    public String logout(HttpSession session){        //清除session        session.removeAttribute("admin_session");        //重定向到登录页面的跳转方法        return "/admin/index";    }   }

package com.example.meal_ordering_system.controller; import com.example.meal_ordering_system.entity.Users;import com.example.meal_ordering_system.service.UsersService;import org.apache.ibatis.annotations.Param;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.beans.factory.annotation.Qualifier;import org.springframework.context.annotation.Scope;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController; import javax.annotation.Resource;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.http.HttpSession;import java.util.Random;import java.util.UUID; /** * (Users)表控制层 * * @author znz * @since 2021-02-04 12:51:21 */@Controller("usersController")@RequestMapping("users")@Scope("prototype")public class UsersController {    /**     * 服务对象     */    @Autowired    @Qualifier("usersService")    private UsersService usersService;     /**     * 通过主键查询单条数据     *     * @param id 主键     * @return 单条数据     */    @RequestMapping ("queryById")    public Users queryById(Integer id) {        return this.usersService.queryById(id);    }      /**     * 登录方法     * @param user     * @param request     * @return     */    @RequestMapping("login")    public String login(Users user, HttpServletRequest request){        boolean loginType=usersService.login(user.getName(), user.getPwd());        HttpSession session=request.getSession();        if(loginType){            session.setAttribute("user_session",usersService.queryById(usersService.queryByname(user.getName())));            return "redirect:/menus/qiantai/allMenus";        }else{            session.setAttribute("message","用户名密码错误");            return "qiantai/userLoginFail";        }    }    //登出,地址/users/logout    @RequestMapping("logout")    public String logout(String type,HttpSession session){        //清除session        session.removeAttribute("user_session");        if(type!=null&&type.equals("qiantai")){            return "redirect:/menus/qiantai/allMenus";        }else {            //重定向到登录页面的跳转方法            return "/admin/index";        }    }     @RequestMapping("insert")    public String insert(@Param("name") String name,@Param("pwd") String pwd,@Param("realname") String realname,@Param("sex") String sex,@Param("age") Integer age,@Param("card") String card,@Param("address") String address,@Param("Phone") String phone,@Param("email")String email,@Param("code")String code,@Param("type")Integer type){        Users user=new Users(name,pwd,realname,sex,age,card,address,phone,email,code,type);        usersService.insert(user);        return "redirect:../public/qiantai/login.jsp";    }      @RequestMapping("update")    public String update(HttpSession session,@Param("id")Integer id,@Param("name") String name,@Param("pwd") String pwd,@Param("realname") String realname,@Param("sex") String sex,@Param("age") Integer age,@Param("card") String card,@Param("address") String address,@Param("Phone") String phone,@Param("email")String email,@Param("code")String code,@Param("type")Integer type){        Users user=new Users(id,name,pwd,realname,sex,age,card,address,phone,email,code,type);        usersService.update(user);        session.removeAttribute("user_session");        return "redirect:/users/login";    }}

package com.example.meal_ordering_system.controller; import com.example.meal_ordering_system.entity.*;import com.example.meal_ordering_system.service.MenusService;import com.example.meal_ordering_system.service.OrdersService;import com.example.meal_ordering_system.service.UsersService;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.beans.factory.annotation.Qualifier;import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;  import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpSession;import java.io.UnsupportedEncodingException;import java.text.SimpleDateFormat;import java.util.ArrayList;import java.util.Date;import java.util.List; /** * (Orders)表控制层 * * @author znz * @since 2021-02-04 12:51:20 */@Controller@RequestMapping("orders")public class OrdersController {    /**     * 服务对象     */    @Autowired    @Qualifier("ordersService")    private OrdersService ordersService;     @Autowired    @Qualifier("menusService")    private MenusService menusService;     @Autowired    @Qualifier("usersService")      private UsersService usersService;     //获取全部订单信息    @RequestMapping("ordergetall")    public String ordergetall( HttpServletRequest request) {        //传给前端        Pages page1=null;        //总页面        Integer totalCount=null;         //当前页面        String currentpages="1";         //获取上一页还是下一页标识        String s="";         //数据库操作页面        String pagess="1";         //前端页面总数        Integer allpage=null;         //如果不为空则获取currentpage        if(request.getParameter("currentpage")!=null){            currentpages=request.getParameter("currentpage");            totalCount= ordersService.pageCount();            allpage=totalCount/5;            if(totalCount%5!=0){                allpage++;            }            if(Integer.parseInt(currentpages)<=0){                currentpages="1";            }            if(Integer.parseInt(currentpages)>allpage){                currentpages=""+allpage;            }              //设置pagess的值            if(request.getParameter("s")!=null){                s=request.getParameter("s");                if(s.equals("up")){                    pagess=""+(Integer.parseInt(currentpages)-4);                }else if(s.equals("down")){                    pagess=""+((Integer.parseInt(currentpages)-1)*5-1);                }else if (s.equals("first")){                    pagess="0";                }else if(s.equals("last")){                    pagess=""+(totalCount-(totalCount%5)-1);                }else {                    System.out.println("错误");                }            }             page1=new Pages(currentpages,allpage);            request.setAttribute("pages",page1);         }else{            totalCount= ordersService.pageCount();            allpage=totalCount/5;            if(ordersService.pageCount()%5!=0){                allpage++;            }            page1=new Pages("1", allpage);             request.setAttribute("pages",page1);        }         //判断操作数据库页面是否突破限制        if(Integer.parseInt(pagess)<=0){            pagess="0";        }        if(Integer.parseInt(pagess)>totalCount){            pagess=""+(totalCount-(totalCount%5)-1);        }          List list= ordersService.pageList(Integer.parseInt(pagess),5);        request.setAttribute("list",list);         System.out.println("pagess="+pagess);        System.out.println("currentpages="+currentpages);         return "/admin/order";    }     //确认订单 确认则将deliverys设置为一否则删除    @RequestMapping("OrderComfirm")    public String OrderComfirm( HttpServletRequest request){        int id=Integer.parseInt(request.getParameter("id"));        String reqtype=request.getParameter("reqtype");        if(reqtype.equals("delivery")){            ordersService.updatedeliveryById(id);        }else if(reqtype.equals("del")){            ordersService.deleteById(id);        }else{            System.out.println("错误");        }         return "redirect:/orders/ordergetall";    }      @RequestMapping("order_search")    public String order_search( HttpServletRequest request) {        return "/admin/order_search";    }       @RequestMapping("ordergetallbydelivery")    public  String ordergetallbydelivery(HttpServletRequest request){        String delivery=request.getParameter("delivery");        Integer d=Integer.parseInt(delivery);        List list=ordersService.pageListByDelivery(d);        HttpSession session=request.getSession();        session.setAttribute("ordersearch", list);        return "/qiantai/order";    }     @RequestMapping(value="order_qiantai",method = RequestMethod.POST)    public String  order_qiantai( HttpServletRequest request) throws UnsupportedEncodingException {        List list=null;        HttpSession session=request.getSession();        request.setCharacterEncoding("utf-8");        Integer id=null;        String menuname=null;        String day1=null;        if(request.getParameter("menuname")!=null&&(!request.getParameter("menuname").equals(""))){            menuname=request.getParameter("menuname");            list=ordersService.pageListByMenue(menuname);        }else if(request.getParameter("date")!=null&&(!request.getParameter("date").equals(""))){            day1=request.getParameter("date");            Integer a=Integer.parseInt(day1.substring(9,10));            String aa=""+(a+1);            StringBuilder day=new StringBuilder(day1);            day.replace(9,10,aa);            String day2=day.toString();            list=ordersService.pageListByDate(day1,day2);        }else {            System.out.println("未提交");        }          session.setAttribute("ordersearch", list);        System.out.println(id);        System.out.println(menuname);        System.out.println(day1);         return "/qiantai/order";      }      @RequestMapping(value="order_searchs",method = RequestMethod.POST)    public String order_searchs( HttpServletRequest request) throws UnsupportedEncodingException {         List list=null;        HttpSession session=request.getSession();        request.setCharacterEncoding("utf-8");        Integer id=null;        String menuname=null;        String day1=null;        if(request.getParameter("userid")!=null&&(!request.getParameter("userid").equals(""))){            id=Integer.parseInt(request.getParameter("userid"));            list=ordersService.pageListByID(id);        }else if(request.getParameter("menuname")!=null&&(!request.getParameter("menuname").equals(""))){            menuname=request.getParameter("menuname");            list=ordersService.pageListByMenue(menuname);        }else if(request.getParameter("date")!=null&&(!request.getParameter("date").equals(""))){            day1=request.getParameter("date");            Integer a=Integer.parseInt(day1.substring(9,10));            String aa=""+(a+1);            StringBuilder day=new StringBuilder(day1);            day.replace(9,10,aa);            String day2=day.toString();            list=ordersService.pageListByDate(day1,day2);        }else {            System.out.println("未提交");        }          session.setAttribute("ordersearch", list);        System.out.println(id);        System.out.println(menuname);        System.out.println(day1);         return "/admin/order_search";    }     //跳转到statistic页面    @RequestMapping("order_statistic")    public String order_statistic( HttpServletRequest request) throws UnsupportedEncodingException {        List list=null;        HttpSession session=request.getSession();        request.setCharacterEncoding("utf-8");         SimpleDateFormat formatter= new SimpleDateFormat("yyyy-MM-dd");        Date date = new Date(System.currentTimeMillis());        String day1=formatter.format(date);        Integer a=Integer.parseInt(day1.substring(9,10));        String aa=""+(a+1);        StringBuilder day=new StringBuilder(day1);        day.replace(9,10,aa);        String day2=day.toString();         System.out.println(a);        System.out.println(day1);        System.out.println(day2);        list=ordersService.pageListByDate(day1,day2);         session.setAttribute("orderstatistic", list);         return "/admin/order_statistic";     }     @RequestMapping("orderqiantai")    public String orderqiantai( HttpServletRequest request){        return "/qiantai/order";    }      //放入购物车    @RequestMapping("order_addshoppingcar")    public String order_addshoppingcar(HttpServletRequest request){        HttpSession session=request.getSession();         String menuId = request.getParameter("menuId");        Integer id=Integer.parseInt(menuId);        Integer sum=(Integer) session.getAttribute("sum");        if(sum==null){            sum=1;            session.setAttribute("sum",sum);        }        Menus menus = menusService.queryById(id);        String name=menus.getName();        float price=menus.getPrice1();         ShoppingCart shoppingCart1=new ShoppingCart(id,name,price,sum);        List shoppingCarts=new ArrayList();        if(session.getAttribute("shoppingcar")!=null){            shoppingCarts=(List)session.getAttribute("shoppingcar");            for (ShoppingCart shoppingCart:shoppingCarts) {                if(name.equals(shoppingCart.getName())){                    sum=shoppingCart.getSums()+1;                    shoppingCarts.remove(shoppingCart);                    break;                }            }            shoppingCart1=new ShoppingCart(id,name,price,sum);            shoppingCarts.add(shoppingCart1);            session.setAttribute("shoppingcar",shoppingCarts);        }else{            shoppingCart1=new ShoppingCart(id,name,price,sum);            shoppingCarts.add(shoppingCart1);            session.setAttribute("shoppingcar",shoppingCarts);        }        return "redirect:/menus/qiantai/allMenus";    }      //购物车单个取消    @RequestMapping("order_shoppingcardel")    public String order_shoppingcardel(HttpServletRequest request){        HttpSession session=request.getSession();        List shoppingCarts=(List)session.getAttribute("shoppingcar");        Integer id=Integer.parseInt(request.getParameter("del"));        Integer i=0;        for (ShoppingCart shoppingCart:shoppingCarts) {            if(i.equals(id)){                shoppingCarts.remove(shoppingCart);                break;            }            i++;        }         return "redirect:/menus/qiantai/allMenus";    }    @RequestMapping("order_addshoppingcartoOrder")     //提交或取消订单    public String order_addshoppingcartoOrder(HttpServletRequest request) {        HttpSession session=request.getSession();        List shoppingCarts=(List)session.getAttribute("shoppingcar");        if(session.getAttribute("user_session")!=null) {            Users user = (Users) session.getAttribute("user_session");            Integer userid = usersService.queryByname(user.getName());            Integer delivery = 0;            String remove = request.getParameter("remove");            SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");            Date date = new Date(System.currentTimeMillis());            String day = formatter.format(date);            Integer id = null;            if (shoppingCarts != null) {                for (ShoppingCart shoppingCart : shoppingCarts) {                    Integer sums = shoppingCart.getSums();                    Integer menuid = shoppingCart.getId();                    Orders orders = new Orders(id, userid, menuid, sums, day, delivery);                    ordersService.insert(orders);                }                session.removeAttribute("shoppingcar");            }             if(remove!=null) {                if (remove.equals("1")) {                    session.removeAttribute("shoppingcar");                }            }        }else{            return "redirect:../public/qiantai/login.jsp";        }        return "redirect:/menus/qiantai/allMenus";    } }

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