JAVA 尚硅谷|码农管理系统

需求说明

需求说明2

需求说明3

需求说明4

需求说明6

第一步 - 创建项目基本组件

1

键盘访问的实现

TSUtility.java

TSUtility.java

package com.atguigu.team.domain
import java.util.*;
/**
 * 
 * @Description 项目中提供了TSUtility.java类，可用来方便地实现键盘访问。
 * @author shkstart  Email:shkstart@126.com
 * @version 
 * @date 2019年2月12日上午12:02:58
 *
 */
public class TSUtility {
    private static Scanner scanner = new Scanner(System.in);
    /**
     * 
     * @Description 该方法读取键盘，如果用户键入’1’-’4’中的任意字符，则方法返回。返回值为用户键入字符。
     * @author shkstart
     * @date 2019年2月12日上午12:03:30
     * @return
     */
    public static char readMenuSelection() {
        char c;
        for (; ; ) {
            String str = readKeyBoard(1, false);
            c = str.charAt(0);
            if (c != '1' && c != '2' &&
                c != '3' && c != '4') {
                System.out.print("选择错误，请重新输入：");
            } else break;
        }
        return c;
    }
    /**
     * 
     * @Description 该方法提示并等待，直到用户按回车键后返回。
     * @author shkstart
     * @date 2019年2月12日上午12:03:50
     */
    public static void readReturn() {
        System.out.print("按回车键继续...");
        readKeyBoard(100, true);
    }
    /**
     * 
     * @Description 该方法从键盘读取一个长度不超过2位的整数，并将其作为方法的返回值。
     * @author shkstart
     * @date 2019年2月12日上午12:04:04
     * @return
     */
    public static int readInt() {
        int n;
        for (; ; ) {
            String str = readKeyBoard(2, false);
            try {
                n = Integer.parseInt(str);
                break;
            } catch (NumberFormatException e) {
                System.out.print("数字输入错误，请重新输入：");
            }
        }
        return n;
    }
    /**
     * 
     * @Description 从键盘读取‘Y’或’N’，并将其作为方法的返回值。
     * @author shkstart
     * @date 2019年2月12日上午12:04:45
     * @return
     */
    public static char readConfirmSelection() {
        char c;
        for (; ; ) {
            String str = readKeyBoard(1, false).toUpperCase();
            c = str.charAt(0);
            if (c == 'Y' || c == 'N') {
                break;
            } else {
                System.out.print("选择错误，请重新输入：");
            }
        }
        return c;
    }
 
    private static String readKeyBoard(int limit, boolean blankReturn) {
        String line = "";
 
        while (scanner.hasNextLine()) {
            line = scanner.nextLine();
            if (line.length() == 0) {
                if (blankReturn) return line;
                else continue;
            }
 
            if (line.length() < 1 || line.length() > limit) {
                System.out.print("输入长度（不大于" + limit + "）错误，请重新输入：");
                continue;
            }
            break;
        }
 
        return line;
    }
}

Equipment接口及其实现子类的

package com.atguigu.team.domain;

public interface Equipment {

    String getDescription();

}

Notebook

package com.project03.domain;


public class Notebook implements Equipment{
    private String model;
    private double price;

    public Notebook(){
        super();
    }

    public Notebook(String model,double price){
        super();
        this.model = model;
        this.price = price;
    }

    public String getModel() {
        return model;
    }

    public void setModel(String model) {
        this.model = model;
    }

    public double getPrice() {
        return price;
    }

    public void setPrice(double price) {
        this.price = price;
    }

    public String getDescription(){
        return model + "(" + price + ")";
    }

}

PC

package com.project03.domain;

public class PC implements Equipment {
    private String model;
    private String display;

    public PC(){
        super();
    }

    public PC(String model,String display){
        super();
        this.model = model;
        this.display = display;
    }

    public String getModel() {
        return model;
    }

    public void setModel(String model) {
        this.model = model;
    }

    public String getDisplay() {
        return display;
    }

    public void setDisplay(String display) {
        this.display = display;
    }

    @Override
    public String getDescription() {
        return model + "(" + display + ")";
    }
}

Printer

package com.project03.domain;

public class Printer implements Equipment {
    private String name;
    private String type;

    public Printer(){
        super();
    }

    public Printer(String name,String type){
        super();
        this.name = name;
        this.type = type;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }
    
    @Override
    public String getDescription() {
        return name + "(" + type +")";
    }
}

Employee

Employee

package com.project03.domain;

public class Employee {
    private int id;
    private String name;
    private int age;
    private double salary;

    public Employee(){

    }

    public Employee(int id, String name, int age, double salary) {
        this.id = id;
        this.name = name;
        this.age = age;
        this.salary = salary;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public double getSalary() {
        return salary;
    }

    public void setSalary(double salary) {
        this.salary = salary;
    }

    public String getInfo(){
        return id + "\t" + name + "\t"+ age + "\t"+ salary ;
    }

    @Override
    public String toString(){
        return getInfo();
    }
    
}

Programmer

package com.project03.domain;
import com.project03.service.Status;

public class Programmer extends Employee {
    private int memberId;
    private Status status = Status.FREE;
    private Equipment equipment = null;



    public Programmer(int id, String name, int age, double salary, int memberId, Status status, Equipment equipment) {
        super(id, name, age, salary);
        this.memberId = memberId;
        this.status = status;
        this.equipment = equipment;
    }


    public int getMemberId() {
        return memberId;
    }

    public void setMemberId(int memberId) {
        this.memberId = memberId;
    }

    public Status getStatus() {
        return status;
    }

    public void setStatus(Status status) {
        this.status = status;
    }

    public Equipment getEquipment() {
        return equipment;
    }

    public void setEquipment(Equipment equipment) {
        this.equipment = equipment;
    }

    @Override
    public String toString() {
        return getInfo() + "\t\t" + "Programmer" + "\t" + getStatus().getName() + "\t\t" + "\t\t\t\t\t\t\t" + getEquipment().getDescription();
    }

    public String getTeamDetails(){
        return memberId + "/" + getId() + "\t\t\t" + getName() + "\t" + getAge() + "\t\t" + getSalary() + "\t\t程序员";
    }

 
}

Designer

package com.project03.domain;

import com.project03.service.Status;

public class Designer extends Programmer {
    private double bonus;

    public Designer(int id, String name, int age, double salary, int memberId, Status status, Equipment equipment,
            double bonus) {
        super(id, name, age, salary, memberId, status, equipment);
        this.bonus = bonus;
    }

    public double getBonus() {
        return bonus;
    }

    public void setBonus(double bonus) {
        this.bonus = bonus;
    }

    @Override
    public String toString() {
        return getInfo() + "\t\t" + "Designer" + "\t" + getStatus().getName() + "\t\t" + bonus + "\t\t\t\t\t\t" + getEquipment().getDescription();
    }

    public String getTeamDetails(){
        return getMemberId() + "/" + getId() + "\t\t" + getName() + "\t" + getAge() + "\t\t" + getSalary() + "\t\t设计师\t" +bonus;
    }
    
}

Architect

package com.project03.domain;

import com.project03.service.Status;

public class Architect extends Designer{
    private int stock;

    public Architect(int id, String name, int age, double salary, int memberId, Status status, Equipment equipment,
            double bonus, int stock) {
        super(id, name, age, salary, memberId, status, equipment, bonus);
        this.stock = stock;
    }

    public int getStock() {
        return stock;
    }

    public void setStock(int stock) {
        this.stock = stock;
    }

    @Override
    public String toString() {
        return getInfo() + "\t\t" + "架构师" + "\t" + getStatus().getName()+ "\t\t" + getBonus() + "\t\t\t" + stock + "\t\t" +getEquipment().getDescription();
    }

    public String getTeamDetails(){
        return  getMemberId() + "/" + getId() + "\t\t" + getName() + "\t" + getAge() + "\t\t" + getSalary() + "\t\t架构师\t" +getBonus() + "\t\t" + getStock();
    }

}

Status类

Status
package com.atguigu.team.service;
public class Status {
    private final String NAME;
    private Status(String name) {
        this.NAME = name;
    }
    public static final Status FREE = new Status("FREE");
    public static final Status VOCATION = new Status("VOCATION");
    public static final Status BUSY = new Status("BUSY");
    public String getNAME() {
        return NAME;
    }
    @Override
    public String toString() {
        return NAME;
    }
}

Data类

储存team中的人员包括设备的信息

package com.atguigu.team.service;

public class Data {
    public static final int EMPLOYEE = 10;
    public static final int PROGRAMMER = 11;
    public static final int DESIGNER = 12;
    public static final int ARCHITECT = 13;

    public static final int PC = 21;
    public static final int NOTEBOOK = 22;
    public static final int PRINTER = 23;

    //Employee  :  10, id, name, age, salary
    //Programmer:  11, id, name, age, salary
    //Designer  :  12, id, name, age, salary, bonus
    //Architect :  13, id, name, age, salary, bonus, stock
    /**
     * {"10", "1", "马云", "22", "3000"},
     * {"13", "2", "马化腾", "32", "18000", "15000", "2000"},
     */
    public static final String[][] EMPLOYEES = {
            {"10", "1", "马云", "22", "3000"},
            {"13", "2", "马化腾", "32", "18000", "15000", "2000"},
            {"11", "3", "李彦宏", "23", "7000"},
            {"11", "4", "刘强东", "24", "7300"},
            {"12", "5", "雷军", "28", "10000", "5000"},
            {"11", "6", "任志强", "22", "6800"},
            {"12", "7", "柳传志", "29", "10800","5200"},
            {"13", "8", "杨元庆", "30", "19800", "15000", "2500"},
            {"12", "9", "史玉柱", "26", "9800", "5500"},
            {"11", "10", "丁磊", "21", "6600"},
            {"11", "11", "张朝阳", "25", "7100"},
            {"12", "12", "杨致远", "27", "9600", "4800"}
    };

    //如下的EQUIPMENTS数组与上面的EMPLOYEES数组元素一一对应
    //PC      :21, model, display
    //NoteBook:22, model, price
    //Printer :23, name, type
    public static final String[][] EQUIPMENTS = {
            {},
            {"22", "联想T4", "6000"},
            {"21", "戴尔", "NEC17寸"},
            {"21", "戴尔", "三星 17寸"},
            {"23", "佳能 2900", "激光"},
            {"21", "华硕", "三星 17寸"},
            {"21", "华硕", "三星 17寸"},
            {"23", "爱普生20K", "针式"},
            {"22", "惠普m6", "5800"},
            {"21", "戴尔", "NEC 17寸"},
            {"21", "华硕","三星 17寸"},
            {"22", "惠普m6", "5800"}
    };
}

NameListService

package com.project03.service;

import com.project03.domain.Architect;
import com.project03.domain.Designer;
import com.project03.domain.Employee;
import com.project03.domain.Equipment;
import com.project03.domain.Notebook;
import com.project03.domain.Programmer;
import com.project03.domain.PC;
import com.project03.domain.Printer;

/*
* @Description 负责将Data中的数据封装到employee[]数组中，同时提供操作employee[]数组的相关方法，比如返回所有员工列表，返回单个员工
* @author zc
* @version 
* @date 创建时间：2020年10月27日 下午2:36:41 
*/

public class NameListService {
    private Employee[] employees;
    
    public NameListService(){
    /*
     * @Description :根据data的数据将数据填入到employees的数组中
     * @Author Crazy_August
     * @Date 2021-02-28  20:23
     * @Since version-1.0
     */

        employees = new Employee[Data.EMPLOYEES.length];
        for(int i = 0; i < employees.length;i++){
            //将Data中的信息解析成相对应的格式
            int type = Integer.parseInt(Data.EMPLOYEES[i][0]);
            int id = Integer.parseInt(Data.EMPLOYEES[i][1]);
            String name = Data.EMPLOYEES[i][2];
            int age = Integer.parseInt(Data.EMPLOYEES[i][3]);
            double salary = Double.parseDouble(Data.EMPLOYEES[i][4]);
            int memberId = -1;  //表示暂不在团队中
            double bonus; //动态绑定，先声明不调用，等调用的时候会判定调用哪个方法
            int stock; 
            Equipment equipment = null; //暂无设备
            Status status = Status.FREE;


            switch(type){
            case Data.EMPLOYEE:
                employees[i] = new Employee(id, name, age, salary);  //employee不需要设备
                break;
            case Data.PROGRAMMER:
                equipment = grabEquipment(i);
                employees[i] = new Programmer(id, name, age, salary, memberId, status, equipment);
                break;
            case Data.DESIGNER:
                equipment = grabEquipment(i);
                bonus = Double.parseDouble(Data.EMPLOYEES[i][5]);
                employees[i] = new Designer(id, name, age, salary, memberId, status, equipment, bonus);
                break;
            case Data.ARCHITECT:
                equipment = grabEquipment(i);
                bonus = Double.parseDouble(Data.EMPLOYEES[i][5]);
                stock = Integer.parseInt(Data.EMPLOYEES[i][6]);
                employees[i] = new Architect(id, name, age, salary, memberId, status, equipment, bonus, stock);
                break;
            }
        }
    }

    /*
     * @Description :获取员工的设备
     * @Author Crazy_August
     * @Date 2021-02-28  20:23
     * @Since version-1.0
     */

    public Equipment grabEquipment(int index){
        int modelType = Integer.parseInt(Data.EQUIPMENTS[index][0]);
        String model = null, display = null,type = null,name = null;
        double price = 0;
        Equipment equipment = null;

        switch(modelType){
            case Data.PC:
                model = Data.EQUIPMENTS[index][1];
                display = Data.EQUIPMENTS[index][2];
                equipment = new PC(model,display);
                break;
            case Data.NOTEBOOK:
                model = Data.EQUIPMENTS[index][1];
                price = Double.parseDouble(Data.EQUIPMENTS[index][2]);
                equipment = new Notebook(model,price);
                break;
            case Data.PRINTER:
                name = Data.EQUIPMENTS[index][1];
                type = Data.EQUIPMENTS[index][2];
                equipment = new Printer(name,type);
                break;
        }
        return equipment;
    }

    /*
     * @Description :新建一个数组返回所有的员工
     * @Author Crazy_August
     * @Date 2021-02-28  20:23
     * @Since version-1.0
     */

    public Employee[] getAllEmployees(){
        Employee[] employeeList = new Employee[employees.length];
        for(int i = 0; i< employees.length;i++){
            employeeList[i] = this.employees[i];
        }
        return employeeList;
    }

    /*
     * @Description :根据员工id返回员工信息
     * @Author Crazy_August
     * @Date 2021-02-28  20:23
     * @Since version-1.0
     */

    public Employee getEmployee(int id) throws TeamException{
        for(int i = 0; i< employees.length; i++){
            if(id == employees[i].getId()){
                return employees[i];
            }
            
        }throw new TeamException("Cant find the employee!");
    }

}

TeamService

package com.project03.service;
import com.project03.domain.Architect;
import com.project03.domain.Designer;
import com.project03.domain.Employee;
import com.project03.domain.Programmer;


/*
 * @Description :对新创建的开发团队进行一系列的操作，如增删
 * @Author Crazy_August
 * @Date 2021-02-28  20:23
 * @Since version-1.0
 */

public class TeamService{
    private static int counter = 1; //代表保存在team中的人的序号
    private final int max_member = 5;

    private Programmer[] team = new Programmer[max_member];
    private int total = 0;

    //获取team中架构师、设计师、程序员的人数
    private int numArc = 0;
    private int numDes = 0;
    private int numPro = 0;

    //返回team
    public Programmer[] getTeam(){
        Programmer[] team = new Programmer[total];
        for(int i = 0; i<team.length;i++){
            team[i] = this.team[i];
        }
        return team;
    }

    /*
    *
    * @description 将员工添加到team中
    * @author : Crazy_August
    * @Date: 2021-02-28
    * @Time: 18:24
    */

    public void addMember(Employee employee) throws TeamException{
        //请考虑以下几种失败情况
        if(total > max_member){
            throw new TeamException("No available headcount");
        }
        if(!(employee instanceof Programmer)){
            throw new TeamException("Not a Programmer");  //过滤掉了非programmer的employee,比如马云
        }

        //此处对programmer的子类进行向上转型，目的是为了使用programmer特有的setStatus
        Programmer programmer = (Programmer)employee;
        if(programmer.getStatus() == Status.BUSY){
            throw new TeamException("The employee is being busy with something");
        }
        if(programmer.getStatus() == Status.VACATION){
            throw new TeamException("The employee is being in a vocation");
        }

        if(isExist(employee)){
            throw new TeamException("Already in the team");
        }

        if(employee instanceof Architect){
            if(numArc >=1 ){
                throw new TeamException("Only 1 Architecture is allowed");
            }
            numArc++;
        }else if(employee instanceof Designer){
            if(numDes >= 2){
                throw new TeamException("Only 2 Designers are needed");
            }
            numDes++;
        }else{
            if(numPro>=3){
                throw new TeamException("Only 3 programmers are needed");
            }
            numPro++;
        }

        team[total] = programmer;
        total++;
        programmer.setStatus(Status.BUSY);
        programmer.setMemberId(counter++);

    }

    /*
    *
    * @description 将员工从team中删除
    * @author : Crazy_August
    * @Date: 2021-02-28
    * @Time: 18:24
    */
    public void removeMember(int memberId) throws TeamException{
        
        for(int i = 0; i < total; i++){
            if(team[i].getMemberId() == memberId){
                //修改状态
                team[i].setStatus(Status.FREE);
                Programmer programmer = team[i];
                if(programmer instanceof Architect){
                    numArc--;
                }else if(programmer instanceof Designer){
                    numDes--;
                }else{
                    numPro--;
                }

                for(int j = i; j < total-1; j++){
                    team[j] = team[j+1];
                }
                team[--total] = null;
                return;
            }
        }
        //没有找到memberId的时候
        throw new TeamException("Cant find the team member");
    }



    public boolean isExist(Employee employee){
        for(int i = 0; i < total; i ++){
            if(team[i].getId() == employee.getId()){
                return true;
            }
        }
        return false;
    }
}

TeamException

package com.project03.service;

public class TeamException extends Exception{
    public final long serialVersionUID = -3387516229948L;

    public TeamException(){
        super();
    }

    public TeamException(String msg){
        super(msg);
    }
}

TeamView

package com.project03.view;
import com.project03.domain.Employee;
import com.project03.domain.Programmer;
import com.project03.service.NameListService;
import com.project03.service.TeamException;
import com.project03.service.TeamService;

public class TeamView {
    //实例化类，方便调用其中的方法
    private NameListService listSvc = new NameListService();
    private TeamService teamSvc = new TeamService();

    //创建一个激活主界面的方法
    public void enterMainMenu(){
        boolean isFlag = true;
        TeamView teamview = new TeamView();  //内部实例化一个构造器
        char menu = 0;


        do{
            if(menu != '1'){
                teamview.listAllEmployees();  //当输入不是1的数字，一直返回完整的员工列表
            }

            menu = TSUtility.readMenuSelection();
            switch(menu){
                case '1':
                    teamview.getTeam();
                    break;
                case '2':
                    teamview.addMember();
                    break;
                case '3':
                    teamview.deleteMember();
                    break;
                case '4':
                    System.out.println("是否确定退出（Y/N）");
                    char key = TSUtility.readConfirmSelection();
                    if(key == 'Y'){
                        isFlag = false;
                        System.out.println("退出成功");
                    }
                    break;
                default:
            }

        }while(isFlag);
    }



    //设计列出员工列表的形式
    private void listAllEmployees(){
        System.out.println("------------------------------------开发团队调度软件---------------------------------------");
        System.out.println("ID\t姓名\t\t年龄\t工资\t\t\t职位\t\t状态\t\t\t奖金\t\t\t\t股票\t\t\t领用设备");
        //列出所有员工的信息
        for(int i = 0; i < listSvc.getAllEmployees().length;i++){
            System.out.println(listSvc.getAllEmployees()[i]);
        }

        System.out.println("-----------------------------------------------------------------------------------------");
        System.out.println("1- 团队成员 2- 添加团队成员 3-删除团队成员 4-退出  请选择( 1 - 4 ) ");
    }

    //显示新的开发团队
    private void getTeam(){
        System.out.println("------------------------------------团队列表----------------------------------------------");
        Programmer[] team = teamSvc.getTeam();
        if(team == null || team.length == 0){
            System.out.println("None in new Programming team");
        }else{
            System.out.println("TID/ID\t\t\t姓名\t\t年龄\t\t工资\t\t\t职位\t\t奖金\t\t\t股票");
            for(int i = 0; i<team.length;i++){
                System.out.println(team[i].getTeamDetails());
            }
            System.out.println("-----------------------------------------------------------------------------------------");
        }
    }

    //实现添加成员的操作
    private void addMember(){
        System.out.println("------------------------------------添加员工----------------------------------------------");
        System.out.println("请输入要添加的员工ID：");
        int id = TSUtility.readInt();
        try{
            Employee employee = listSvc.getEmployee(id);
            teamSvc.addMember(employee);
            System.out.println("Successfully added");
        }catch(TeamException e){
            System.out.println("Failed to add a new member" + e.getMessage() + "\n");
        }
        System.out.println("-----------------------------------------------------------------------------------------");

        //读取回车，按回车键继续
        TSUtility.readReturn();
    }

    private void deleteMember(){
        System.out.println("------------------------------------删除成员----------------------------------------------");
        System.out.println("请输入要删除员工的TID：");
        int memberId = TSUtility.readInt();
        System.out.println("请确认是否要删除(Y/N)");
        char key = TSUtility.readConfirmSelection();
        if(key == 'N'){
            return;
        }

        try{
            teamSvc.removeMember(memberId);
            System.out.println("Successfully deleted");
            }catch(TeamException e){
                System.out.println("Failed to delete " + e.getMessage() + "\n");
            }catch(ArrayIndexOutOfBoundsException e){
                System.out.println("Failed to delete "+ e.getMessage() + "\n" );
            }
        TSUtility.readReturn();
        System.out.println("-----------------------------------------------------------------------------------------");
    }

    public static void main(String[] args) {
        TeamView teamview = new TeamView();
        teamview.enterMainMenu();
    }
}

整个项目完整的敲下来还是要费不少力气的，尤其是debug阶段，因为强迫症要求对每个细节、格式进行一次次的调试校正，还是重新学到了不少东西。 然后最后阶段在deleteMember这个方法的调试上几乎花了3h的时间，问题出在无法删除列表的第一个成员，最后在teamService里面找了这个bug。 有时间还是要再敲一遍。如果有人发现新的bug欢迎指出，上面的版本不是最终版，因为挨个粘贴实在是太麻烦了，有时间再上传到github上面吧。

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