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; @Controller@RequestMapping("admin")public class AdminController { //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; @Controller("usersController")@RequestMapping("users")@Scope("prototype")public class UsersController { @Autowired @Qualifier("usersService") private UsersService usersService; @RequestMapping ("queryById") public Users queryById(Integer id) { return this.usersService.queryById(id); } @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; @Controller@RequestMapping("orders")public class OrdersController { @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<Orders> 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<Orders> 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<Orders> 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<Orders> 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<Orders> 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<ShoppingCart> shoppingCarts=new ArrayList(); if(session.getAttribute("shoppingcar")!=null){ shoppingCarts=(List<ShoppingCart>)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<ShoppingCart> shoppingCarts=(List<ShoppingCart>)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<ShoppingCart> shoppingCarts=(List<ShoppingCart>)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"; } }以上是“如何使用Java SSM实现在线点餐系统”这篇文章的所有内容，感谢各位的阅读！相信大家都有了一定的了解，希望分享的内容对大家有所帮助，如果还想学习更多知识，欢迎关注编程网行业资讯频道！
