项目简介

完成一个电商系统的商品模块功能，商品类包含以下属性：商品ID，商品名，类别名，单价，库存量，产地，计量单位等信息,要求实现商品管理功能以及管理员登录功能，具体如下:

1. 管理员登录(账号密码固定admin/admin)
2. 修改管理员密码
3. 商品添加
4. 商品列表
5. 查询指定id的商品
6. 根据商品id删除商品
7. 根据id修改指定商品的价格
8. 根据id修改指定商品的库存
9. 根据商品类别查询所有商品
10. 查询指定价格区间的商品信息

代码展示

测试类

package com.softeem.homework1;public class Test {public static void main(String[] args) {new UserClient().menu();}}

客户端类

package com.softeem.homework1;import java.util.Scanner;public class UserClient {private CommodityManage co = new CommodityManage();private User user = new User("admin", "admin");private Scanner sc;public void menu() {msg("===================================");msg("=========SOFTEEM管理员登录系统==========");msg("=========【1】管理员登陆================");msg("=========【2】管理员修改密码=============");msg("=========【0】退出系统=================");msg("请输入指令：");start();}private void start() {sc = new Scanner(System.in);int i = sc.nextInt();switch (i) {case 1:load();break;case 2:modifyPwd();break;case 0:exit();break;default:msg("请输入正确的操作！");}menu();}/** 系统退出 */private void exit() {sc = new Scanner(System.in);msg("是否确定退出？(Y/N)");String op = sc.next();if (op.equalsIgnoreCase("Y")) {msg("谢谢使用，再见！");System.exit(1);}}private void modifyPwd() {msg("请输入修改后的密码：");sc = new Scanner(System.in);String s = sc.next();user.setPwd(s);msg("请重新登陆：");load();}private void load() {msg("请输入管理员信息(按以下格式：账号/密码)");sc = new Scanner(System.in);String s = sc.nextLine();String[] info = s.split("/");if (info[0].equals(user.getSno())) {if (info[1].equals(user.getPwd())) {enterManager();}msg("密码输入错误！");}
//		msg("请输入有效账号！");menu();}private void enterManager() {msg("===================================");msg("=========SOFTEEM管理员操作界面==========");msg("=========【1】商品添加=================");msg("=========【2】商品列表=================");msg("=========【3】查询指定id的商品===========");msg("=========【4】根据商品id删除商品==========");msg("=========【5】根据id修改指定商品的价格======");msg("=========【6】根据id修改指定商品的库存======");msg("=========【7】根据商品类别查询所有商品=======");msg("=========【8】根据指定价格区间查询商品信息=======");msg("=========【0】退出登陆==================");msg("请输入指令：");manager();}private void manager() {sc = new Scanner(System.in);int i = sc.nextInt();switch (i) {case 1:enter1();break;case 2:co.list();break;case 3:enter3();break;case 4:enter4();break;case 5:enter5();break;case 6:enter6();break;case 7:enter7();break;case 8:enter8();break;case 0:menu();break;default:msg("请输入正确的操作！");}enterManager();}private void enter8() {msg("请输入需要查询商品的价格区间");int ss2 = sc.nextInt();int ss3 = sc.nextInt();if (co.findByPriceRange(ss2, ss3) != null) {co.print(co.findByPriceRange(ss2, ss3));}}private void enter7() {msg("请输入需要查询的商品类别");String ss1 = sc.next();if (co.findByTypeName(ss1) != null) {co.print(co.findByTypeName(ss1));} else {msg("未查询到该类商品");}}private void enter6() {msg("请输入需要修改库存的商品id和商品的库存");int id4 = sc.nextInt();int storeNum = sc.nextInt();if (co.modify(id4, storeNum)) {msg("修改成功！");} else {System.out.println("未查询到该商品！");}}private void enter5() {msg("请输入需要修改价格的商品id和商品的价格");int id3 = sc.nextInt();double price = sc.nextDouble();if (co.modify(id3, price)) {msg("修改成功！");} else {System.out.println("未查询到该商品！");}}private void enter4() {msg("请输入需要删除的商品id");int id2 = sc.nextInt();if (co.delete(id2)) {msg("删除成功！");} else {System.out.println("未查询到该商品！");}}private void enter3() {msg("请输入需要查询的id");int id1 = sc.nextInt();if (co.findById(id1) != null) {System.out.println(co.findById(id1));} else {System.out.println("未查询到该商品！");}}private void enter1() {msg("请输入需要添加的商品信息,按以下格式：\n(商品id/商品名/类别名/单价/库存量/产地/计量单位)");sc = new Scanner(System.in);String x = sc.nextLine();String[] ss = x.split("/");int s1 = Integer.parseInt(ss[0]);String s2 = ss[1];String s3 = ss[2];Double s4 = Double.parseDouble(ss[3]);int s5 = Integer.parseInt(ss[4]);String s6 = ss[5];String s7 = ss[6];Commodity c = new Commodity(s1, s2, s3, s4, s5, s6, s7);if (co.add(c)) {msg("添加成功");}}private void msg(Object o) {System.out.println(o);}}

商品类

package com.softeem.homework1;/*** 商品类* * @author Administrator**/
public class Commodity {private int id;private String name;private String typeName;private double unitPrice;private int storeNum;private String place;private String unit;public Commodity() {super();}public Commodity(int id, String name, String typeName, double unitPrice, int storeNum, String place, String unit) {super();this.id = id;this.name = name;this.typeName = typeName;this.unitPrice = unitPrice;this.storeNum = storeNum;this.place = place;this.unit = unit;}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 String getTypeName() {return typeName;}public void setTypeName(String typeName) {this.typeName = typeName;}public double getUnitPrice() {return unitPrice;}public void setUnitPrice(double unitPrice) {this.unitPrice = unitPrice;}public int getStoreNum() {return storeNum;}public void setStoreNum(int storeNum) {this.storeNum = storeNum;}public String getPlace() {return place;}public void setPlace(String place) {this.place = place;}public String getUnit() {return unit;}public void setUnit(String unit) {this.unit = unit;}@Overridepublic String toString() {return "Commodity [id=" + id + ", name=" + name + ", typeName=" + typeName + ", unitPrice=" + unitPrice+ ", storeNum=" + storeNum + ", place=" + place + ", unit=" + unit + "]";}}

商品管理类

package com.softeem.homework1;import java.util.ArrayList;public class CommodityManage {static ArrayList list = new ArrayList();// 商品添加public boolean add(Commodity c) {return list.add(c);}// 商品列表public void list() {for (Commodity c : list) {System.out.println(c);}}// 查询指定id的商品public Commodity findById(int id) {for (Commodity c : list) {if (c.getId() == id) {return c;}}return null;}// 根据商品id删除商品public boolean delete(int id) {for (Commodity c : list) {if (c.getId() == id) {list.remove(c);return true;}}return false;}// 根据商品id修改指定商品的价格public boolean modify(int id, double price) {for (Commodity c : list) {if (findById(id) != null) {c.setUnitPrice(price);return true;}}return false;}// 根据商品id修改指定商品的库存public boolean modify(int id, int storeNum) {for (Commodity c : list) {if (findById(id) != null) {c.setStoreNum(storeNum);return true;}}return false;}// 根据商品类别查询所有商品public ArrayList findByTypeName(String name) {ArrayList arr = new ArrayList();for (Commodity c : list) {if (c.getTypeName().equals(name)) {arr.add(c);}}return arr;}// 查询指定价格区间的商品信息public ArrayList findByPriceRange(double a, double b) {ArrayList array = new ArrayList();for (Commodity c : list) {if (a < b) {if (c.getUnitPrice() >= a && c.getUnitPrice() <= b) {array.add(c);}} else if (a == b) {if (c.getUnitPrice() == a) {array.add(c);}} else {if (c.getUnitPrice() <= a && c.getUnitPrice() >= b) {array.add(c);}}}return array;}public void print(ArrayList a) {for (Commodity c : a) {System.out.println(c);}}
}

管理员类

package com.softeem.homework1;/*** 管理员类* * @author Administrator**/
public class User {private String sno;private String pwd;public User() {super();}public User(String sno, String pwd) {super();this.sno = sno;this.pwd = pwd;}public String getSno() {return sno;}public void setSno(String sno) {this.sno = sno;}public String getPwd() {return pwd;}public void setPwd(String pwd) {this.pwd = pwd;}@Overridepublic String toString() {return "User [sno=" + sno + ", pwd=" + pwd + "]";}}

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