这篇文章主要介绍“Java怎么实现校园外卖点餐系统”，在日常操作中，相信很多人在Java怎么实现校园外卖点餐系统问题上存在疑惑，小编查阅了各式资料，整理出简单好用的操作方法，希望对大家解答”Java怎么实现校园外卖点餐系统”的疑惑有所帮助！接下来，请跟着小编一起来学习吧！
一、项目简述
环境配置：
Jdk1.8 + Tomcat8.5 + mysql + Eclispe（IntelliJ IDEA,Eclispe,MyEclispe,Sts都支持）
项目技术：
JSP +Spring + SpringMVC + MyBatis + css + JavaScript + JQuery + Ajax + layui+ maven等等。
二、效果图展示
三、核心代码
管理员controller控制层
@Controller@RequestMapping("/config")public class UserController { @Autowired UserRoleService userRoleService; @Autowired UserService userService; @Autowired RoleService roleService; @RequestMapping("/enableStatus") @ResponseBody public String enableStatus(@RequestParam(value = "name") String name){ return userService.enableStatus(name); } @RequestMapping("/stopStatus") @ResponseBody public String stopStatus(@RequestParam(value = "name") String name){ return userService.stopStatus(name); } @RequestMapping("/adminAdd") public String adminadd(Model model){ List<Role> list = roleService.list(); model.addAttribute("rolelist",list); return "syspage/admin-add"; } @RequestMapping("/listUser") public String list(Model model, Page page){ PageHelper.offsetPage(page.getStart(),page.getCount());//分页查询 List<User> us= userService.list(); int total = (int) new PageInfo<>(us).getTotal();//总条数 page.setTotal(total); model.addAttribute("us", us);//所有用户 model.addAttribute("total",total); Map<User,List<Role>> user_roles = new HashMap<>(); //每个用户对应的权限 for (User user : us) { List<Role> roles=roleService.listRoles(user); user_roles.put(user, roles); } model.addAttribute("user_roles", user_roles); return "syspage/admin-list"; } @RequestMapping("/editUser") public String edit(Model model,Long id){ List<Role> rs = roleService.list(); model.addAttribute("rs", rs); User user =userService.get(id); model.addAttribute("user", user); //当前拥有的角色 List<Role> roles =roleService.listRoles(user); model.addAttribute("currentRoles", roles); return "syspage/admin-edit"; } @RequestMapping("deleteUser") public String delete(Model model,long id){ userService.delete(id); return "redirect:listUser"; } @RequestMapping("updateUser") public String update(User user, long[] roleIds){ userRoleService.setRoles(user,roleIds); String password=user.getPassword(); //如果在修改的时候没有设置密码，就表示不改动密码 if(user.getPassword().length()!=0) { String salt = new SecureRandomNumberGenerator().nextBytes().toString(); int times = 2; String algorithmName = "md5"; String encodedPassword = new SimpleHash(algorithmName,password,salt,times).toString(); user.setSalt(salt); user.setPassword(encodedPassword); } else user.setPassword(null); userService.update(user); return "redirect:listUser"; } @RequestMapping("addUser") public String add(User user,long[] roleIds){ String salt = new SecureRandomNumberGenerator().nextBytes().toString();//生成随机数 int times = 2; String algorithmName = "md5"; String encodedPassword = new SimpleHash(algorithmName,user.getPassword(),salt,times).toString(); User u = new User(); u.setName(user.getName()); u.setPassword(encodedPassword); u.setSalt(salt); u.setStatus(1); u.setAddress(user.getAddress()); u.setPhone(user.getPhone()); userService.add(u); userRoleService.setRoles(u,roleIds); return "redirect:listUser"; } }管理员角色controler控制层
@Controller@RequestMapping("/config")public class RoleController { @Autowired RoleService roleService; @Autowired RolePermissionService rolePermissionService; @Autowired PermissionService permissionService; @RequestMapping("/addRoleUI") public String addRole(){ return "syspage/admin-role-add"; } @RequestMapping("/listRole") public String list(Model model, Page page){ PageHelper.offsetPage(page.getStart(),page.getCount());//分页查询 List<Role> rs= roleService.list(); int total = (int) new PageInfo<>(rs).getTotal();//总条数 page.setTotal(total); model.addAttribute("rs", rs); model.addAttribute("roleSize",total); Map<Role,List<Permission>> role_permissions = new HashMap<>(); for (Role role : rs) { List<Permission> ps = permissionService.list(role); role_permissions.put(role, ps); } model.addAttribute("role_permissions", role_permissions); return "syspage/admin-role"; } @RequestMapping("/editRole") public String list(Model model,long id){ Role role =roleService.get(id); model.addAttribute("role", role); //所有权限 List<Permission> ps = permissionService.list(); model.addAttribute("ps", ps); //当前管理员拥有的权限 List<Permission> currentPermissions = permissionService.list(role); model.addAttribute("currentPermissions", currentPermissions); return "syspage/admin-role-edit"; } @RequestMapping("/updateRole") public String update(Role role,long[] permissionIds){ rolePermissionService.setPermissions(role, permissionIds); roleService.update(role); return "redirect:listRole"; } @RequestMapping("/addRole") public String list(Model model,Role role){ roleService.add(role); return "redirect:listRole"; } @RequestMapping("/deleteRole") public String delete(Model model,long id){ roleService.delete(id); return "redirect:listRole"; } }后台登录控制层
@Controller@RequestMapping("")public class LoginController { @Autowired UserService userService; @RequestMapping(value="/login",method=RequestMethod.POST) public String login(Model model, String name, String password){//throws ParseException Subject subject = SecurityUtils.getSubject(); UsernamePasswordToken token = new UsernamePasswordToken(name,password); try { subject.login(token); User us = userService.getByName(name); String lastLoginTime = ""; if(us!=null){ SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); //上次时间 Date time = us.getLasttime(); lastLoginTime = sdf.format(time); //新时间 String format = sdf.format(new Date()); //string转date 不处理时间格式会不理想 ParsePosition pos = new ParsePosition(0); Date strtodate = sdf.parse(format, pos); us.setLasttime(strtodate); userService.update(us); } if (us.getStatus()==1){ Session session=subject.getSession(); session.setAttribute("subject", subject); session.setAttribute("lastLoginTime",lastLoginTime); return "redirect:index"; }else { model.addAttribute("error", "账号已被停用！"); return "/login"; } } catch (AuthenticationException e) { model.addAttribute("error", "验证失败！"); return "/login"; } } }订单模块controller控制层
@Controller@RequestMapping("/order")public class OrderController { @Autowired OrderService orderService; @Autowired OrderItemService orderItemService; @RequestMapping("/list") public String list(Model model, Page page){ PageHelper.offsetPage(page.getStart(),page.getCount()); List<Order> os= orderService.list(); int total = (int) new PageInfo<>(os).getTotal(); page.setTotal(total); //为订单添加订单项数据 orderItemService.fill(os); model.addAttribute("os", os); model.addAttribute("page", page); model.addAttribute("totals", total); return "ordermodule/order-list"; } @RequestMapping("/orderDelivery") public String delivery(Order o){ o.setStatus(2); orderService.update(o); return "redirect:list"; } @RequestMapping("/seeOrderItem") public String seeOrderItem(int oid,Model model){ Order o = orderService.get(oid); orderItemService.fill(o); model.addAttribute("orderItems",o.getOrderItems()); model.addAttribute("total",o.getOrderItems().size()); model.addAttribute("totalPrice",o.getTotal()); return "ordermodule/orderItem-list"; } }到此，关于“Java怎么实现校园外卖点餐系统”的学习就结束了，希望能够解决大家的疑惑。理论与实践的搭配能更好的帮助大家学习，快去试试吧！若想继续学习更多相关知识，请继续关注编程网网站，小编会继续努力为大家带来更多实用的文章！
