Java怎么实现校园外卖点餐系统

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

/** * 管理员controller */@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 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 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_roles = new HashMap<>();        //每个用户对应的权限        for (User user : us) {            List roles=roleService.listRoles(user);            user_roles.put(user, roles);        }        model.addAttribute("user_roles", user_roles);         return "syspage/admin-list";    }     /**     * 修改管理员角色     * @param model     * @param id     * @return     */    @RequestMapping("/editUser")    public String edit(Model model,Long id){        List rs = roleService.list();        model.addAttribute("rs", rs);              User user =userService.get(id);        model.addAttribute("user", user);        //当前拥有的角色        List 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

/** * 管理员角色controler */@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 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_permissions = new HashMap<>();                 for (Role role : rs) {            List 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 ps = permissionService.list();        model.addAttribute("ps", ps);        //当前管理员拥有的权限        List 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

/** * 后台登陆 */@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

/** * 订单模块controller */@Controller@RequestMapping("/order")public class OrderController {     @Autowired    OrderService orderService;    @Autowired    OrderItemService orderItemService;     /**     * 所有订单     * @param model     * @param page     * @return     */    @RequestMapping("/list")    public String list(Model model, Page page){        PageHelper.offsetPage(page.getStart(),page.getCount());         List 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";    }     /**     * 订单发货     * @param o     * @return     */    @RequestMapping("/orderDelivery")    public String delivery(Order o){        o.setStatus(2);        orderService.update(o);        return "redirect:list";    }     /**     * 查看当前订单的订单项     * @param oid     * @param model     * @return     */    @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";    } }

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