Realize community express management
MVC
Model View Controller
Hierarchy
The layers are clear. Generally, Xiaolang likes to start from the main function, but the obsessive-compulsive disorder of Piaohong is quick to dodge.
bean package (stores objects)
package work.february.two.bean;
import java.util.Objects;
/**
* @Author: 小浪
* @Description:
* @Date Created in 2021-02-02 10:32
* @Modified By:
*/
public class Express {
/**
* 快递公司
* 快递单号
* 收件人手机号
* 取件码
*/
private String company;
private String number;
private String phoneNumber;
private int extractionCode;
public Express() {
}
public Express(String company, String number, String phoneNumber, int extractionCode) {
this.company = company;
this.number = number;
this.phoneNumber = phoneNumber;
this.extractionCode = extractionCode;
}
public int getExtractionCode() {
return extractionCode;
}
public void setExtractionCode(int extractionCode) {
this.extractionCode = extractionCode;
}
public String getCompany() {
return company;
}
public void setCompany(String company) {
this.company = company;
}
public String getNumber() {
return number;
}
public void setNumber(String number) {
this.number = number;
}
public String getPhoneNumber() {
return phoneNumber;
}
public void setPhoneNumber(String phoneNumber) {
this.phoneNumber = phoneNumber;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
Express exress = (Express) o;
return extractionCode == exress.extractionCode && Objects.equals(company, exress.company) && Objects.equals(number, exress.number) && Objects.equals(phoneNumber, exress.phoneNumber);
}
@Override
public int hashCode() {
return Objects.hash(company, number, phoneNumber, extractionCode);
}
@Override
public String toString() {
return "Exress{" +
"company='" + company + '\'' +
", number='" + number + '\'' +
", phoneNumber='" + phoneNumber + '\'' +
", extractionCode=" + extractionCode +
'}';
}
}
control package
package work.february.two.control;
import work.february.two.bean.Express;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
/**
* @Author: 小浪
* @Description:
* @Date Created in 2021-02-02 10:33
* @Modified By:
*/
public class ExpressControl {
Random random =new Random();
private ArrayList<Express> data =new ArrayList<>();
/**
* 存储快递
* @param express
*/
public void addExpress(Express express) {
/**
* 生成随机数
*/
int code ;
p: while (true){
code = random.nextInt(900000)+100000;
for (int i = 0;i < data.size();i++){
if(code == data.get(i).getExtractionCode()){
//随机产生的取件码重复时,重复生成
continue p;
}
}
break ;
}
//设置取件码
express.setExtractionCode(code);
//将快递存储到集合中
data.add(express);
System.out.println("快递录入成功,取件码:"+code);
}
/**
* 取出快递
* @param extractionCode
* @return
*/
public Express getExpress(int extractionCode) {
for (int i = 0;i < data.size();i++){
if (extractionCode == data.get(i).getExtractionCode()){
//如果有,则取出并从集合中删除
return data.remove(i);
}
}
//如果没有.则返回空
return null;
}
public List<Express> findAll() {
return data;
}
}
view package
package work.february.two.view;
import work.february.two.bean.Express;
import java.util.List;
import java.util.Scanner;
/**
* @Author: 杜英杰
* @Description:
* @Date Created in 2021-02-02 10:34
* @Modified By:
*/
public class Views {
static Scanner scanner =new Scanner(System.in);
/**
* 主菜单
* @return 功能按键
*/
public static int mainMenu() {
System.out.println("请根据提示,输入功能序号:");
System.out.println("1.快递录入:");
System.out.println("2.快递取出:");
System.out.println("3.查看所有:");
System.out.println("0.程序退出:");
int num =-1;
try {
num = scanner.nextInt();
}catch (Exception e){
}
if(num<0||num>3){
System.out.println("你的输入有误,请重新输入!");
return mainMenu();
}
return num;
}
/**
* 欢迎界面
*/
public void welcome() {
System.out.println("欢迎使用快递管理系统");
}
/**
* 录入快递界面
* @return 快递信息
*/
public Express inMenu() {
System.out.println("请根据提示进行快递录入:");
System.out.println("请输入快递公司:");
String company =scanner.next();
System.out.println("请输入快递单号:");
String expressNumber =scanner.next();
System.out.println("请输入收件人手机号码");
String phoneNumber =scanner.next();
//将输入的快递内容组成成一个快递对象
Express express =new Express();
express.setCompany(company);
express.setNumber(expressNumber);
express.setPhoneNumber(phoneNumber);
return express;
}
/**
* 取件界面
* @return 返回取件码
*/
public int outMenu() {
System.out.println("请输入六位数取件码:");
int code = -1;
try {
code = scanner.nextInt();
}catch (Exception e){
}
if (code<100000||code>999999){
System.out.println("输入有误!");
return outMenu();
}
return code;
}
/**
* 用于显示取件的快递信息
*
* @param express 用于显示的快递对象
*/
public void printExpress(Express express) {
if (express == null){
System.out.println("取件码不存在,即将返回主界面");
}else{
System.out.println("取件成功");
System.out.println("快递公司:"+express.getCompany()+",快递单号:"+express.getNumber()+",收件人手机号码:"+express.getPhoneNumber()+",取件码:"+express.getExtractionCode());
}
}
/**
* 显示所有快递的视图方法
* @param data
*/
public void printAll(List<Express> data) {
if (data.size() == 0){
System.out.println("暂无快递,即将回到主页");
}else{
System.out.println("快递信息如下:");
for (int i =0 ;i < data.size();i++){
Express express =data.get(i);
System.out.println("快递公司:"+express.getCompany()+",快递单号:"+express.getNumber()+",收件人手机号码:"+express.getPhoneNumber()+",取件码:"+express.getExtractionCode());
}
}
}
/**
* 登录验证
*/
private boolean Password(){
System.out.println("请输入权限密码:(输入错误返回上层目录)");
String password =scanner.next();
//内置密码是"1234"
return "1234".equals(password);
}
/**
* bye - bye
*/
public void bye() {
System.out.println("系统已经退出!");
}
}
main package
package work.february.two.main;
import work.february.two.bean.Express;
import work.february.two.control.ExpressControl;
import work.february.two.view.Views;
import java.util.List;
/**
* @Author: 小浪
* @Description:
* @Date Created in 2021-02-02 10:33
* @Modified By:
*/
public class main {
public static void main(String[] args) {
Views view =new Views();
ExpressControl control=new ExpressControl();
//欢迎界面
view.welcome();
m: while(true){
int menuKey=Views.mainMenu();
switch (menuKey){
case 0:
//退出程序
break m;
case 1: {
//录入快递的视图
Express express = view.inMenu();
//调度层进行存储
control.addExpress(express);
break;
}
case 2:{
//取出快递 提示用户输入取件码
int extractionCode = view.outMenu();
//根据取件码从control中取出快递数据
Express express =control.getExpress(extractionCode);
//将取到的数据进行打印
view.printExpress(express);
break ;
}
case 3:{
//显示所有快递
List<Express> data = control.findAll();
view.printAll(data);
}
default:
break ;
}
}
//再见页面
view.bye();
}
}
