计算机毕业设计选题推荐-跑腿平台微信小程序/安卓APP-项目实战

news2025/7/10 13:04:00

作者主页:IT研究室✨
个人简介:曾从事计算机专业培训教学,擅长Java、Python、微信小程序、Golang、安卓Android等项目实战。接项目定制开发、代码讲解、答辩教学、文档编写、降重等。
☑文末获取源码☑
精彩专栏推荐⬇⬇⬇
Java项目
Python项目
安卓项目
微信小程序项目

文章目录

  • 一、前言
  • 二、开发环境
  • 三、系统界面展示
  • 四、代码参考
  • 五、论文参考
  • 六、系统视频
  • 结语

一、前言

在当今社会,随着互联网的快速发展,各种线上平台和服务如雨后春笋般涌现,改变了人们的生活方式。其中,跑腿平台作为一种满足用户个性化需求的服务平台,具有广阔的市场前景。然而,在跑腿平台的发展过程中,也面临着许多挑战。如何提高服务质量、保障用户权益、优化资源配置等问题逐渐凸显。因此,从学术角度出发,对跑腿平台进行深入研究具有重要的现实意义。

当前,跑腿平台在服务过程中主要存在以下问题:
信息不对称:用户和跑腿员之间的信息交流可能存在误差,导致跑腿员无法准确理解用户需求,影响服务质量。
评价机制不完善:现有的评价机制可能存在主观性和片面性,无法反映跑腿员的服务质量和用户真实评价。
监管力度不足:对于跑腿员的监管存在漏洞,可能导致部分跑腿员违规操作,损害用户利益。

本课题旨在研究一种新型的跑腿平台微信小程序/安卓APP,解决现有解决方案存在的问题,实现以下目标:
减少信息不对称:通过优化用户界面和交互设计,使用户能够更清晰地描述跑腿需求,提高跑腿员对用户需求的准确理解。
完善评价机制:建立客观的评价系统,综合评价跑腿员的服务质量,为用户提供参考依据。
加强监管力度:利用技术手段对跑腿员进行实时监控,防止违规行为的发生,保障用户权益。

本课题的研究意义在于:
提高服务质量:通过优化设计和服务流程,提高跑腿员对用户需求的准确理解,提高服务质量,提升用户体验。
保障用户权益:通过完善评价机制和加强监管力度,保障用户的合法权益,减少投诉。
推动行业发展:通过对跑腿平台的深入研究,推动行业的发展和创新,为市场注入新的活力。

二、开发环境

  • 开发语言:Java
  • 数据库:MySQL
  • 后端:SpringBoot
  • 前端:微信小程序/android+uniapp+Vue

三、系统界面展示

  • 跑腿平台微信小程序/安卓APP界面展示:
    跑腿平台微信小程序/安卓APP-跑腿任务详情
    跑腿平台微信小程序/安卓APP-跑腿任务发布
    跑腿平台微信小程序/安卓APP-跑腿任务管理-跑腿员
    跑腿平台微信小程序/安卓APP-接单任务管理-跑腿员
    跑腿平台微信小程序/安卓APP-跑腿员管理
    跑腿平台微信小程序/安卓APP-公告信息管理

四、代码参考

  • 跑腿平台微信小程序/安卓APP项目实战代码参考:
@Controller
@RequestMapping("/order")
public class OrderController {
    @Autowired
    private OrderService orderService;
    @Autowired
    private UserService userService;

    @Autowired
    private EvaluationService evaluationService;

    @RequestMapping("add_order")
    public String orderForm(@RequestParam("type_demand") String type_demand,Model model, HttpSession session){
        System.out.println(type_demand);
        User user = (User) session.getAttribute("user");
        List<UserAddress> addressList = userService.FindAddressbyid(user.getUserId());
        UserAddress userAddress = null;
        try{
            userAddress = addressList.get(0);
        }
        catch (Exception e){
            System.out.println("没有地址");
        }
        model.addAttribute("type_demand",type_demand);
        model.addAttribute("addressList",addressList);
        model.addAttribute("userAddress",userAddress);
        return "add_order";
    }

    @RequestMapping("submit_order")
    public String submitForm(@RequestBody OrderForm orderForm, HttpSession session)
    {
        orderForm.setBillUser((User)session.getAttribute("user"));
        System.out.println(orderForm);
        System.out.println((User) session.getAttribute("user"));
        orderService.addOrder(orderForm);
        return "login";
    }
    @RequestMapping("/submit_order_to_dataBase")
    public String submitOrderToDataBase(@RequestBody Map<String, Object> orderData, HttpSession session){
        int orderID = Integer.parseInt((String) orderData.get("OrderID"));
        User user = (User)session.getAttribute("user");
        int userID = user.getUserId();
        System.out.println("???????????");
        System.out.println(orderID);
        System.out.println(userID);
        System.out.println("???????????");
        orderService.InsertOrderReceivingUserAndChangeOrderStatus(orderID,userID);
        return "login";
    }
    @RequestMapping("display_orders")
    public String displayOrder(Model model){
        List<OrderForm> orderFormList = orderService.queryAllOrderForms();
        model.addAttribute("orderFormList",orderFormList);
        return "run_pool";
    }
    @RequestMapping("display_orders_by_limit")
    @ResponseBody
    public List<OrderForm> displayOrdersByLimit(@RequestBody Filter filter){
        System.out.println(filter);
        filter.setTimeInterval();
        filter.setMoney();
        System.out.println(filter);
        List<OrderForm> orderFormList = orderService.queryOrderFormsByLimit(filter);
        for (OrderForm orderForm : orderFormList) {
            System.out.println(orderForm);
        }
        return orderFormList;
    }
    @RequestMapping("/myrelease")
    public String complain(Model model,HttpSession session)
    {
        User user = (User) session.getAttribute("user");
        int userid=user.getUserId();
        List<OrderForm> formList = orderService.FindAllbyid(userid);
//        formList.stream().forEach(System.out::println);
        model.addAttribute(formList);
        return "order";
    }

    @RequestMapping("/canceled")
    public String canceled(Model model,HttpSession session)
    {
        User user = (User) session.getAttribute("user");
        int userid=user.getUserId();
        List<OrderForm> formList = orderService.FindAllbyidandstatus(userid,0);
        model.addAttribute(formList);
        return "order0";
    }




    @RequestMapping("/obligation")
    public String obligation(Model model,HttpSession session)
    {
        User user = (User) session.getAttribute("user");
        int userid=user.getUserId();
        List<OrderForm> formList = orderService.FindAllbyidandstatus(userid,1);
        model.addAttribute(formList);
        return "order1";
    }
    @RequestMapping("/seize")
    public String seize(Model model,HttpSession session)
    {
        User user = (User) session.getAttribute("user");
        int userid=user.getUserId();
        List<OrderForm> formList = orderService.FindAllbyidandstatus(userid,2);
        model.addAttribute(formList);
        return "order2";
    }
    @RequestMapping("/inprogress")
    public String inprogress(Model model,HttpSession session)
    {
        User user = (User) session.getAttribute("user");
        int userid=user.getUserId();
        List<OrderForm> formList = orderService.FindAllbyidandstatus(userid,3);
        model.addAttribute(formList);
        return "order3";
    }

    @RequestMapping("/completed")
    public String Completed(Model model,HttpSession session)
    {
        User user = (User) session.getAttribute("user");
        int userid=user.getUserId();
        List<OrderForm> formList = orderService.FindAllbyidandstatus(userid,4);
        List<OrderForm> List2 = orderService.FindAllbyidandstatus(userid,5);
        List<OrderForm> List3 = orderService.FindAllbyidandstatus(userid,6);
        List<OrderForm> List4 = orderService.FindAllbyidandstatus(userid,7);
        formList.addAll(List2);
        formList.addAll(List3);
        formList.addAll(List4);
        model.addAttribute(formList);
        return "order4";
    }

    @GetMapping("/complain")
    public String complain(@RequestParam("orderid") int orderid,Model model,HttpSession session)
    {
        OrderForm orderForm = orderService.FindByOrderid(orderid);
        System.out.println(orderForm);
        model.addAttribute("orderForm",orderForm);
        User user = (User) session.getAttribute("user");
        model.addAttribute("user",user);
        return "complaint";
    }


    @GetMapping("/complain0")
    public String complain0(@RequestParam("orderid") int orderid,Model model,HttpSession session)
    {
        OrderForm orderForm = orderService.FindByOrderid(orderid);
        System.out.println(orderForm);
        model.addAttribute("orderForm",orderForm);
        User user = (User) session.getAttribute("user");
        model.addAttribute("user",user);
        return "complaint0";
    }




    @RequestMapping("/Complaintsubmission")
    public String Complaintsubmission(int orderid,int complainantid,int respondentid,String content,Model model, HttpSession session)
    {
//        System.out.println(orderid);
//        System.out.println(complainantid);
//        System.out.println(respondentid);
//        System.out.println(content);
        orderService.AddComplain(orderid,complainantid,respondentid,content);
        User user = (User) session.getAttribute("user");
        int userid=user.getUserId();
        orderService.updatacomplainstatus(orderid);
        List<OrderForm> formList = orderService.FindAllbyidandstatus(userid,4);
        List<OrderForm> List2 = orderService.FindAllbyidandstatus(userid,5);
        List<OrderForm> List3 = orderService.FindAllbyidandstatus(userid,6);
        List<OrderForm> List4 = orderService.FindAllbyidandstatus(userid,7);
        formList.addAll(List2);
        formList.addAll(List3);
        formList.addAll(List4);
        model.addAttribute(formList);
        return "redirect:/order/completed";
    }

    @RequestMapping("/Complaintsubmission0")
    public String Complaintsubmission0(int orderid,int complainantid,int respondentid,String content,Model model, HttpSession session)
    {
//        System.out.println(orderid);
//        System.out.println(complainantid);
//        System.out.println(respondentid);
//        System.out.println(content);
        orderService.AddComplain(orderid,complainantid,respondentid,content);
        User user = (User) session.getAttribute("user");
        int userid=user.getUserId();
        orderService.updatacomplainstatus(orderid);
        List<OrderForm> formList = orderService.FindAllbyidandstatus(userid,4);
        List<OrderForm> List2 = orderService.FindAllbyidandstatus(userid,5);
        List<OrderForm> List3 = orderService.FindAllbyidandstatus(userid,6);
        List<OrderForm> List4 = orderService.FindAllbyidandstatus(userid,7);
        formList.addAll(List2);
        formList.addAll(List3);
        formList.addAll(List4);
        model.addAttribute(formList);
        return "redirect:/order/myrelease";
    }






    @GetMapping("/deleteOrder")
    public String deleteOrder(@RequestParam("orderid") int orderid,Model model,HttpSession session)
    {
        orderService.deletebyorderid(orderid);
        User user = (User) session.getAttribute("user");
        int userid=user.getUserId();
        List<OrderForm> formList = orderService.FindAllbyid(userid);
        model.addAttribute(formList);
        return "order";
    }




    @GetMapping("/deleteOrder2")
    public String deleteOrder2(@RequestParam("orderid") int orderid,Model model,HttpSession session)
    {
        orderService.deletebyorderid(orderid);
        User user = (User) session.getAttribute("user");
        int userid=user.getUserId();
        List<OrderForm> formList = orderService.FindAllbyidandstatus(userid,2);
        model.addAttribute(formList);
        return "order2";
    }


    @GetMapping("/deleteOrder3")
    public String deleteOrder3(@RequestParam("orderid") int orderid,Model model,HttpSession session)
    {
        orderService.deletebyorderid(orderid);
        User user = (User) session.getAttribute("user");
        int userid=user.getUserId();
        List<OrderForm> formList = orderService.FindAllbyidandstatus(userid,3);
        model.addAttribute(formList);
        return "order3";
    }


    @RequestMapping("/myordergrabbing")
    public String myordergrabbing(Model model,HttpSession session)
    {
        User user = (User) session.getAttribute("user");
        int userid=user.getUserId();
        List<OrderForm> formList = orderService.FindPickUpOrdersByid(userid);
        model.addAttribute(formList);

        return "run_order";
    }
    @GetMapping("/deleteRunorder")
    public String deleteRunorder(@RequestParam("orderid") int orderid,Model model,HttpSession session)
    {
        orderService.deletebyorderid(orderid);
        User user = (User) session.getAttribute("user");
        int userid=user.getUserId();
        List<OrderForm> formList = orderService.FindAllbyid(userid);
        model.addAttribute(formList);
        return "redirect:/order/myordergrabbing";
    }


    @GetMapping("/deleteRunorder1")
    public String deleteRunorder2(@RequestParam("orderid") int orderid,Model model,HttpSession session)
    {
        orderService.deletebyorderid(orderid);
        User user = (User) session.getAttribute("user");
        int userid=user.getUserId();
        List<OrderForm> formList = orderService.FindAllbyid(userid);
        model.addAttribute(formList);
        return "run_order1";
    }





    @RequestMapping("/Runorderinprogress")
    public String Runorderinprogress(Model model,HttpSession session)
    {
        User user = (User) session.getAttribute("user");
        int userid=user.getUserId();
        List<OrderForm> formList = orderService.FindAllbyreceiveUserandstatus(userid,3);
        model.addAttribute(formList);
        return "run_order1";
    }


    @RequestMapping("/Runordercompleted")
    public String Runordercompleted(Model model,HttpSession session)
    {
        User user = (User) session.getAttribute("user");
        int userid=user.getUserId();
        List<OrderForm> formList = orderService.FindAllbyreceiveUserandstatus(userid,4);
        model.addAttribute(formList);
        return "run_order2";
    }



    @RequestMapping("/Runordercanceled")
    public String Runordercanceled(Model model,HttpSession session)
    {
        User user = (User) session.getAttribute("user");
        int userid=user.getUserId();
        List<OrderForm> formList = orderService.FindAllbyreceiveUserandstatus(userid,0);
        model.addAttribute(formList);
        return "run_order3";
    }


    @GetMapping("/finishorder")
    public String finishorder(@RequestParam("orderid") int orderid,Model model,HttpSession session)
    {
        orderService.finishorder(orderid);
        User user = (User) session.getAttribute("user");
        int userid=user.getUserId();
        List<OrderForm> formList = orderService.FindAllbyid(userid);
        model.addAttribute(formList);
        return "order";
    }

    @GetMapping("/finishorder1")
    public String finishorder1(@RequestParam("orderid") int orderid,Model model,HttpSession session)
    {
        orderService.finishorder(orderid);
        User user = (User) session.getAttribute("user");
        int userid=user.getUserId();
        List<OrderForm> formList = orderService.FindAllbyid(userid);
        model.addAttribute(formList);
        return "redirect:/order/inprogress";
    }


    @RequestMapping("/insertevaluation")
    public String insertevaluation(Model model,HttpSession session,int id,String eva,float evascore)
    {
        OrderForm order = orderService.findone(id);
        OrderEvaluation evaluation=new OrderEvaluation();
        evaluation.setOrderId(id);
        evaluation.setBillUser(order.getBillUser());
        evaluation.setReceiveUser(order.getReceiveUser());
        evaluation.setAppraise(eva);
        evaluation.setBillScore(5);
        evaluation.setReceiveScore(evascore);
        evaluation.setIsFinish(1);
        evaluation.setStatus(0);
        evaluationService.inserteva(evaluation);
        orderService.updataOrderTransationstatus(id);
        return "redirect:/order/completed";
    }

    @RequestMapping("/popoup")
    public String popoup(Model model,int orderid){
        OrderForm findone = orderService.findone(orderid);
        model.addAttribute("ReceiveUser", findone.getReceiveUser());
        return "all";
    }
    @RequestMapping("/inserteva")
    public String inserteva(Model model,int orderid,HttpSession session){
        model.addAttribute("orderid",orderid);
        return "inserteva";
    }

}
@Controller
@RequestMapping("/transation")
public class TransationController {
    @Autowired
    private OrdertransationMapper service ;

    @Autowired
    private UserService userService;


    @RequestMapping("/findall")
    public String findall(Model model)
    {
        List<OrderTransation> listall;
        listall=service.findall();
        model.addAttribute("transationlistall",listall);
        listall.stream().forEach(System.out::println);
        return "all";
    }
    @RequestMapping("/findone")
    public String findone(Model model)
    {
        OrderTransation listone;
        listone=service.findone(1001);
        model.addAttribute("transationlistone",listone);
        System.out.println(listone);
        return "all";
    }
    @RequestMapping("/delectone")
    public String delectone(Model model)
    {
        OrderTransation listone;
        listone=service.findone(1001);
        if(listone!=null){
            System.out.println(service.delectone(1001));
            return "all";
        }
        else {
            model.addAttribute("msg","不存在这个用户");
        }
        return "all";
    }
    @RequestMapping("mybill")
    public String mybill(Model model, HttpSession session){
        User user = (User) session.getAttribute("user");
        Integer userid=user.getUserId();
        User user1 = userService.userisexist(userid);
        List<OrderTransation> mybill = service.mybill(userid);
        model.addAttribute("mybill",mybill);
        model.addAttribute("user",user1);
        session.setAttribute("user",user1);
        mybill.stream().forEach(System.out::println);
        return "money";
    }
}
@Controller
@RequestMapping("/user")
public class UserController {
//    @Autowired
//    private UserService service;
    @Autowired
   private EvaluationService EvaluationService;

    @Autowired
    private UserService service;


    @RequestMapping("/login")
    public String login()
    {
        return "login";
    }
    @RequestMapping("/get_userInfo")
    @ResponseBody
    public User getUserInfo(@RequestParam int UserID){
        System.out.println("test /user/get_userInfo"+UserID);
        System.out.println(service.userisexist(UserID));
        return service.userisexist(UserID);
    }

    @RequestMapping("/check")
    public String check(int id, String pwd, HttpSession session,Model model)
    {
        User user =service.login(id, pwd);
        if(user==null)
        {
            model.addAttribute("msg"," 账号或密码错误");
//            model.a("passwordError", true);
//            return "redirect:/user/login";
            return "login";
        }
        else
        {
            model.addAttribute("msg",null);
            session.setAttribute("user",user);
            return "homepage";
        }
    }
    @RequestMapping("/quit")
    public String quit(Model model,HttpSession session)
    {
        session.invalidate();
        return "login";
    }
    @RequestMapping("/money")
    public String money(Model model,HttpSession session){
        return "money";
    }
    @RequestMapping("/account")
    public String account(Model model,HttpSession session){
        User user = (User) session.getAttribute("user");
        int userid = user.getUserId();
        service.userisexist(userid);

        model.addAttribute("user",user);

        return "account";
    }
    @RequestMapping("/homepage")
    public String homePage(Model model,HttpSession session){
        return "homepage";
    }
    @RequestMapping("/evaluate")
    public String evaluate(Model model,HttpSession session){
        User user = (User) session.getAttribute("user");
        List<OrderEvaluation> orderformme = EvaluationService.orderformme(user.getUserId());
        List<OrderEvaluation> ordertome = EvaluationService.ordertome(user.getUserId());
        model.addAttribute("ordertome",ordertome);
        model.addAttribute("orderformme",orderformme);
        orderformme.stream().forEach(System.out::println);
        return "evaluate";
    }
    @RequestMapping("/ChangePassword")
    public String ChangePassword(Model model,HttpSession session){
        return "ChangePassword";
    }
    @RequestMapping("/mypage")
    public String myPage(Model model,HttpSession session)
    {
        User user = (User) session.getAttribute("user");
        model.addAttribute("user",user);
        return "mypage";
    }
    @RequestMapping("/run_pool")
    public String runPool(Model model,HttpSession session)
    {
        return "redirect:/order/display_orders";
    }

    @RequestMapping("req")
    public String req(int userid,String username, String pwd1, String pwd2, String phone,
                      String vcade, Model model)
    {

        User user=new User();
        user.setUserId(userid);
        User useris =service.userisexist(user.getUserId());
        if(useris==null)
        {
            user.setUserName(username);
            user.setPhoneNumber(phone);
            user.setPwd(pwd1);
            user.setStatus(0);
            model.addAttribute("user",user);
            if (!pwd1.equals(pwd2)){
                model.addAttribute("msg","两次密码不一致");
                return "login";
            }
            service.register(user);
            model.addAttribute("msg",null);
            return "login";
        }
        else
        {
            model.addAttribute("msg","用户已经注册");
            return "login";
        }

    }

    @RequestMapping("changepwd")
    public String req(String pwd1, String pwd2, String pwd3, Model model,HttpSession session){
        User user = (User) session.getAttribute("user");
        if(pwd1.equals(user.getPwd())){
            if (!pwd2.equals(pwd3)){
                model.addAttribute("msg","两次密码不一致");
                return "ChangePassword";
            }
            else {
                service.changepwd(user.getUserId(),pwd3);
            }
        }
        else {
            model.addAttribute("msg","原始密码不正确");
            return "ChangePassword";
        }
        model.addAttribute("user",user);
        return "mypage";
    }
    @RequestMapping("/updatauser")
    public String updatauser(int userid,String username,String phone, Model model,HttpSession session){
        System.out.println(userid);
        System.out.println(username);
        System.out.println(phone);
        User user = (User) session.getAttribute("user");
        service.UpdateUserById(userid,username,phone);
        user.setUserName(username);
        user.setPhoneNumber(phone);
        session.setAttribute("user",user);
        model.addAttribute("user",user);
        return "mypage";
    }


    @GetMapping("/address")
    public String address(@RequestParam("userid") int userid,Model model,HttpSession session)
    {
        User user = (User) session.getAttribute("user");
        model.addAttribute("user",user);
        List<UserAddress> addressList =service.FindAddressbyid(userid);
        addressList.stream().forEach(System.out::println);
        model.addAttribute("addressList",addressList);
        return "address";
    }

    @GetMapping("/defaultaddress")
    public String defaultaddress(@RequestParam("serialnumber") int serialnumber,@RequestParam("userid") int userid,Model model,HttpSession session)
    {
        service.changeaddress0(userid);
        service.changeaddress1(serialnumber);
        User user = (User) session.getAttribute("user");
        model.addAttribute("user",user);
        List<UserAddress> addressList =service.FindAddressbyid(userid);
        model.addAttribute("addressList",addressList);
        return "address";
    }
    @GetMapping("/editaddress")
    public String editaddress(@RequestParam("serialnumber") int serialnumber,Model model,HttpSession session)
    {
        User user = (User) session.getAttribute("user");
        model.addAttribute("user",user);
        UserAddress address = service.address(serialnumber);
        model.addAttribute("address",address);
        model.addAttribute("serialnumber",serialnumber);
        return "edit_address";
    }

    @RequestMapping("/updateaddress")
    public String updateaddress(int serialnumber,String name,String phone,String address,Model model,HttpSession session)
    {
        service.updateaddress(serialnumber,name,address,phone);
        User user = (User) session.getAttribute("user");
        model.addAttribute("user",user);
        List<UserAddress> addressList =service.FindAddressbyid(user.getUserId());
        model.addAttribute("addressList",addressList);
        return "address";
    }


    @GetMapping("/deleteaddress")
    public String deleteaddress(@RequestParam("serialnumber") int serialnumber,Model model,HttpSession session)
    {
        service.deleteaddress(serialnumber);
        User user = (User) session.getAttribute("user");
        model.addAttribute("user",user);
        List<UserAddress> addressList =service.FindAddressbyid(user.getUserId());
        model.addAttribute("addressList",addressList);

        return "address";
    }

    @RequestMapping("/addaddress")
    public String addaddress(Model model,HttpSession session)
    {
        User user = (User) session.getAttribute("user");
        model.addAttribute("user",user);
        return "add_address";
    }

    @RequestMapping("/addressadd")
    public String addressadd(int userid,String name,String address,String phone,Model model,HttpSession session)
    {
        service.addaddress(userid,name,address,phone);
        User user = (User) session.getAttribute("user");
        model.addAttribute("user",user);
        List<UserAddress> addressList =service.FindAddressbyid(user.getUserId());
        model.addAttribute("addressList",addressList);
        return "address";
    }



    @RequestMapping("mycomplaints")
    public String mycomplaints(Model model,HttpSession session)
    {
        User user = (User) session.getAttribute("user");
        int userid = user.getUserId();
        List<OrderComplain> orderComplainList = service.findallcomplainbyid(userid);
        model.addAttribute("orderComplainList",orderComplainList);
        return "mycomplaints";
    }
    
}

五、论文参考

  • 计算机毕业设计选题推荐-跑腿平台微信小程序/安卓APP论文参考:
    计算机毕业设计选题推荐-跑腿平台微信小程序/安卓APP论文参考

六、系统视频

跑腿平台微信小程序/安卓APP项目视频:

计算机毕业设计选题推荐-跑腿平台微信小程序/安卓APP

结语

计算机毕业设计选题推荐-跑腿平台微信小程序/安卓APP-项目实战
大家可以帮忙点赞、收藏、关注、评论啦~
源码获取:私信我

精彩专栏推荐⬇⬇⬇
Java项目
Python项目
安卓项目
微信小程序项目

本文来自互联网用户投稿,该文观点仅代表作者本人,不代表本站立场。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如若转载,请注明出处:http://www.coloradmin.cn/o/1148499.html

如若内容造成侵权/违法违规/事实不符,请联系多彩编程网进行投诉反馈,一经查实,立即删除!

相关文章

【Java】HashSet集合用法

目录 HashSet 集合特点 示例代码 手写HashSet集合 HashSet 没有Get() HashSet 集合特点 HashSet 基于HashMap 来实现的&#xff0c;是一个不允许有重复元素的集合HashSet 允许有 null 值HashSet 是无序的&#xff0c;即不会记录插入的顺序HashSet集合实现了Set接口HashSet …

07 MIT线性代数-求解Ax=0:主变量,特解 pivot variables, special solutions

前面定义了矩阵的列空间和零空间&#xff0c;那么如何求得这些子空间呢&#xff1f; 1. 计算零空间 Nullspace A的零空间即满足Ax0的所有x构成的向量空间 对于矩阵A进行“行操作”并不会改变Axb的解&#xff0c;因此也不会改变零空间 unchanged 第一步消元: echelon 阶梯型 …

《进化的力量》摘抄

作者&#xff1a;刘润 不是最强壮的&#xff0c;也不是最聪明的&#xff0c;而是最适合的才能生存。 序言 1、成功&#xff0c;一定是因为我们做对了什么。物竞天择&#xff0c;适者生存。但是&#xff0c;面对“天择”逻辑的复杂性&#xff0c;我们其实并不知道什么是对的。…

名人问题(分类讨论),士兵问题(找规律)

【名人问题】n个人中的名人是指这样一个人:他不认识别人&#xff0c;但是每个人都认识他。任务就是找出这样一个名人&#xff0c;但只能通过询问“你认识他/她吗?”这种问是来完成。设计一个高效算法&#xff0c;找出该名人或者确定这群人中没有名人。你的算法在最坏情况下需要…

nginx 进程模型

文章目录 nginx运行模式与进程模式进程模式流程图默认初始化运行模式与进程模式(宏展开)cpu_affinity多CPU绑定合理性判定Nginx的daemon创建&#xff08;os/unix/ngx_daemon.c&#xff09;运行模式、进程模式启动 多进程模式下master处理流程设置进程信号、初始化信号掩码、屏蔽…

『第十一章』数据持久化:CoreData 与 CloudKit

在本篇博文中,您将学到如下内容: 1. 苹果“元老”数据库 CoreData 简介2. CoreData 组成要素3. NSPersistentContainer 对象4. 将 CoreData 集成到项目中5. CoreData 基本操作:增删改查(CRUD)5.1 新建5.2 删除5.3 查询和更新6. CoreData 与 SwiftUI7. 用泛型精简瓶颈代码8. …

多元系的热力学基本方程

多元系&#xff1a;含有两种或两种以上的化学组分的系统 欧勒定理 齐函数成立的充要条件&#xff1a; 多元系的热力学函数 如果系统有K个组元&#xff1a;任何广延量(V, U, S)都是其广延变量的一次齐函数 任何强度量都是其广延变量的零次齐函数 全部选择广延量变量时 由齐函…

UWB室内定位技术

室内定位系统方案中&#xff0c;UWB室内定位技术目前应用较多&#xff0c;得益于UWB室内定位10-30厘米的超高定位精度。 UWB全称是超宽带技术&#xff0c;它是一种无线载波通信技术。 UWB不采用载波&#xff0c;而是利用纳秒至微微秒级的非正弦波窄脉冲传输数据。 目前根据使用…

腾讯云轻量应用服务器地域北京、上海和广州怎么选择比较好?

腾讯云轻量应用服务器地域是指轻量服务器数据中心所在的地理位置&#xff0c;如上海、广州和北京等地域&#xff0c;如何选择地域&#xff1f;腾讯云百科txybk.com建议地域选择遵循就近原则&#xff0c;用户距离轻量服务器地域越近&#xff0c;网络延迟越低&#xff0c;速度就越…

DAMNets

方法 体会 实验充分&#xff0c;不愧是ICLR&#xff0c;但作者未提供代码

代码审计-锐捷EG易网关 管理员账号密码泄露漏洞

出现漏洞的文件在 /login.php 审查源码我们发现通过命令拼接的方式构造命令执行 发送请求包&#xff0c;拼接 CLI指令 show webmaster user /login.php usernameadmin&passwordadmin?showwebmasteruser漏洞证明&#xff1a; 文笔生疏&#xff0c;措辞浅薄&#xff0c;望…

GO学习之 通道(nil Channel妙用)

GO系列 1、GO学习之Hello World 2、GO学习之入门语法 3、GO学习之切片操作 4、GO学习之 Map 操作 5、GO学习之 结构体 操作 6、GO学习之 通道(Channel) 7、GO学习之 多线程(goroutine) 8、GO学习之 函数(Function) 9、GO学习之 接口(Interface) 10、GO学习之 网络通信(Net/Htt…

网络设备远程登录和管理-双厂商

✍ 设备开局都要做哪些配置&#xff1f; ✍ 思科华为的配置命令有什么区别&#xff1f; ✍ 实战演示不同操作系统的配置&#xff1b; -- 本地设备调试 - console接口配置 -- 远程设备管理 - telnet 不加密 | ssh 加密的 -- web界面调试 - 补充的作用 -- SD…

idea中Run/Debug Python项目报错 Argument for @NotNull parameter ‘module‘ of ...

idea中Run/Debug Python项目报错 Argument for NotNull parameter module of ... idea中运行Python项目main.py时报错&#xff1a; Error running main: Argument for NotNull parameter module of com/intellij/openapi/roots/ModuleRootManager.getInstance must not be nu…

电脑提示由于找不到vcruntime140.dll文件,教你四个解决方案

本文将介绍vcruntime140.dll文件的定义、作用以及丢失的原因&#xff0c;并提供四个解决方案来解决这个问题。 首先&#xff0c;让我们来了解一下vcruntime140.dll文件是什么。vcruntime140.dll是Microsoft Visual C Redistributable Package的一部分&#xff0c;它是运行使用…

从0到1之微信小程序快速入门(基础知识)

目录 JSON 配置文件 WXML 模板 WXSS 样式 JS 逻辑交互 微信小程序中&#xff0c;每个页面由4 个基本文件组成&#xff0c;它们分别是&#xff1a;js文件(页面的脚本文件&#xff0c;存放页面的数据、事件处理函数等)、json文件(当前页面的配置文件&#xff0c;配置窗口的外…

【C++的OpenCV】第十四课-OpenCV基础强化(二):访问单通道Mat中的值之at()、ptr()、iscontinuous()

&#x1f389;&#x1f389;&#x1f389; 欢 迎 各 位 来 到 小 白 p i a o 的 学 习 空 间 &#xff01; \color{red}{欢迎各位来到小白piao的学习空间&#xff01;} 欢迎各位来到小白piao的学习空间&#xff01;&#x1f389;&#x1f389;&#x1f389; &#x1f496;&…

Python——新建工程/引入本地库

文章目录 前言一、创建项目及文件二、之前创建项目未勾选Inherit global site-packages三、缺少第三方库报错pywpswin32commarkupsafe前言 PyCharm是一种Python IDE(Integrated Development Environment,集成开发环境),带有一整套可以帮助用户在使用Python语言开发时提高其…

【论文解读】单目3D目标检测 LPCG(ECCV 2022)

本文分享单目3D目标检测&#xff0c;LPCG模型的论文解读&#xff0c;了解它的设计思路&#xff0c;论文核心观点&#xff0c;模型结构&#xff0c;以及效果和性能。 目录 一、LPCG 简介 二、论文核心观点 三、思路框架 四、核心观点——单目3D目标检测的标签中&#xff0c;…

MySQL数据库 #5

文章目录 一、Python操作MySQL1.pymysql的基本操作2.pymysql补充说明1.查看补充2. 增删改&#xff0c;自动确认 3.SQL注入问题1.输入对的用户名就可登录2.输入错的用户名也可以登录针对上述的SQL注入问题&#xff0c;核心在于手动拼接了关键数据 二、视图1.什么是视图2. 为什么…