Java实战之校园外卖点餐系统的实现

目录

• 一、项目简述
• 二、效果图展示
• 三、核心代码
• 管理员controller控制层
• 管理员角色controler控制层
• 后台登录控制层
• 订单模块controller控制层

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<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";
    }

    /**
     * 修改管理员角色
     * @param model
     * @param id
     * @return
     */
    @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

/**
 * 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<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

/**
 * 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<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";
    }

    /**
     * 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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