亲宝软件园·资讯

展开

Java客户信息管理系统 Java实战之客户信息管理系统

丿今朝 人气:0
想了解Java实战之客户信息管理系统的相关内容吗,丿今朝在本文为您仔细讲解Java客户信息管理系统的相关知识和一些Code实例,欢迎阅读和指正,我们先划重点:Java客户信息管理系统,java管理系统,下面大家一起来学习吧。

一、软件设计结构

二、MVC设计模式

模型层:Customer处理数据

控制层:CustomerList处理业务逻辑

视图层:CustomerView显示数据

以下三点建议结合代码理解

1.Customer为实体对象,用于封装客户信息

2.CustomerList为Customer对象的管理模块,内部用数组管理一组Customer对象,并提供相应的添加、修改、删除和遍历的方法,供CustomerView调用

3.CustomerView为主模块,负责菜单的显示和处理用户操作

四个类都在同一包下

三、Customer

package org.atjinzhao.customer;

public class Customer {
	private String name;//姓名
	private char gender;//性别
	private int age;//年龄
	private String phone;//电话
	private String email;//邮箱
	
	public Customer() {
		
	}
	public Customer(String name, char gender, int age, String phone, String email) {
		
		this.name = name;
		this.gender = gender;
		this.age = age;
		this.phone = phone;
		this.email = email;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public char getGender() {
		return gender;
	}
	public void setGender(char gender) {
		this.gender = gender;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	public String getPhone() {
		return phone;
	}
	public void setPhone(String phone) {
		this.phone = phone;
	}
	public String getEmail() {
		return email;
	}
	public void setEmail(String email) {
		this.email = email;
	}
	
	
}

四、CustomerList

package org.atjinzhao.customer;

public class CustomerList {
	private Customer[] customers;//客户列表
	private int total = 0;//记录已保存顾客数量
	
	//构造器
	public CustomerList(int totalCustomer) {
		customers = new Customer[totalCustomer];
	}
	
	//方法
	/**
	 * 添加客户
	 * return:true添加成功,false:添加失败
	 */
	public boolean addCustomer(Customer customer){
		if (total < customers.length) {
			customers[total] = customer;
			total++;
			return true;
		}else return false;
		
	}
	/**
	 * 修改指定索引位置上的客户信息
	 * @param index
	 * @param cust
	 * @return true:修改成功     false修改失败
	 */
	public boolean replaceCustomer(int index,Customer cust){
		if (index < 0 || index >= total) {
			return false;
		}else{
			customers[index] = cust;
			return true;
		}
		
	}
	/**
	 * 删除指定索引位置上的客户
	 * @param index
	 * @return true删除成功    false删除失败
	 */
	public boolean deleteCustomer(int index){
		if (index >= 0 && index < total) {
			for (int i = index; i < total - 1; i++) {
				customers[i] = customers[i+1];
			}
			customers[--total] = null; 
			return true;
		}
		return false;
		
	}
	/**
	 * 获取所有客户信息
	 * @return 数组
	 */
	public Customer[] getAllCustomers(){
		//null的部分不返回
		Customer[] custs = new Customer[total];
		for (int i = 0; i < total; i++) {
			custs[i] = customers[i];
		}
		return custs;
	}
	/**
	 * 获取指定索引位置上的客户
	 */
	public Customer getCustomer(int index){
		if (index >= 0 && index < total) {
		return customers[index];
		}else return null;
	}
	/**
	 * 获取存储客户的数量
	 */
	public int getTotal() {
		return total;
	}
	/**
	 * 获取最大能储存客户的数量
	 */
	public int getCustomer(){
		return customers.length;
	}
}

五、CustomerView

package org.atjinzhao.customer;

public class CustomerView {
	private CustomerList  customerList = new CustomerList(10);
	

	public CustomerView() {
		Customer cust = new Customer("李明",'男',19,"12349982563","lm@gmail.com");
		customerList.addCustomer(cust);
	}

	public void enterMainMenu(){
		//显示主页面
		boolean isFlag = true;
		while(isFlag){
			System.out.println("-----------------客户信息管理软件-----------------");
			System.out.println("                  1    添加客户");
			System.out.println("                  2    修改客户 ");
			System.out.println("                  3    删除客户 ");
			System.out.println("                  4    客户列表 ");
			System.out.println("                  5    退        出 ");
			System.out.println("       请选择(1-5): ");
			
			char selection = CMUtility.readMenuSelection();
			switch (selection) {
			case '1':
				addNewCustomer();
				break;

			case '2':
				modifyCustomer();
				break;
			case '3':
				
				deleteCustomer();
				break;
			case '4':
				listAllCustomers();
				break;
			case '5':
				System.out.print("是否确认退出(Y/N):");
				char isExit = CMUtility.readConfirmSelection();
				if (isExit == 'Y') {
					isFlag = false;
				}
			}
			
		}
		
	}
	/**
	 * 添加客户
	 */
	public void addNewCustomer(){
		System.out.println("-----------------添加客户-----------------");
		System.out.print("姓名:");
		String name = CMUtility.readString(10);
		System.out.print("性别:");
		char gender = CMUtility.readChar();
		System.out.print("年龄:");
		int age = CMUtility.readInt();
		System.out.print("电话:");
		String phone = CMUtility.readString(13);
		System.out.print("邮箱:");
		String email = CMUtility.readString(30);
		
		Customer customer = new Customer(name,gender,age,phone,email);
		boolean isSuccess = customerList.addCustomer(customer);
		if(isSuccess){
			System.out.println("-----------------添加成功-----------------");
		}else{
			System.out.println("---------------目录已满,添加失败---------------");
		}		
	}
	/**
	 * 修改客户
	 */
	public void modifyCustomer(){
		System.out.println("-----------------修改客户-----------------");
		Customer cust;
		int num;
		for (;;) {
			System.out.print("请输入要修改的客户序号(输入-1退出):");
			num = CMUtility.readInt();
			if (num == -1) {
				return;
			}
			cust = customerList.getCustomer(num - 1);
			if (cust == null) {
				System.out.println("无法找到指定客户!");
			} else {
				break;
			}
		}
		
		System.out.println("姓名("+cust.getName()+"):");
		String name = CMUtility.readString(10, cust.getName());
		System.out.println("性别("+cust.getGender()+"):");
		char gender = CMUtility.readChar( cust.getGender());
		System.out.println("年龄("+cust.getAge()+"):");
		int age = CMUtility.readInt(cust.getAge());
		System.out.println("电话("+cust.getPhone()+"):");
		String tel = CMUtility.readString(11, cust.getPhone());
		System.out.println("邮箱("+cust.getEmail()+"):");
		String email = CMUtility.readString(15, cust.getEmail());
		
		Customer newCust = new Customer(name,gender,age,tel,email);
		boolean isReplaced = customerList.replaceCustomer(num - 1, newCust);
		if (isReplaced) {
			System.out.println("-----------------修   改  成  功-----------------\t");
		} else {
			System.out.println("-----------------修   改  失  败-----------------\t");
		}
		
		
	}
	/**
	 * 删除客户
	 */
	public void deleteCustomer(){
		System.out.println("-----------------删除客户-----------------");
		Customer cust;
		int index;
		for (;;) {
			System.out.print("请输入要删除的客户序号(输入-1退出):");
			index = CMUtility.readInt();
			if (index == -1) {
				return;
			}
			cust = customerList.getCustomer(index - 1);
			if (cust == null) {
				System.out.println("无法找到客户!");
			} else {
				break;
			}
		}
		
		System.out.print("是否确认删除(Y/N):");
		char isDelete = CMUtility.readConfirmSelection();
		if (isDelete == 'Y') {
			boolean deleteSuccess = customerList.deleteCustomer(index - 1);
			if (deleteSuccess) {
				System.out.println("-----------------删除成功-----------------");
			} else {
				System.out.println("-----------------删除失败-----------------");
			}
		}else{
			return;
		}
	}
	/**
	 * 显示客户列表的操作
	 */
	public void listAllCustomers(){
		System.out.println("-------------------客  户  列  表------------------\n");
		int total = customerList.getTotal();
		if (total == 0) {
			System.out.println("没有客户记录!");
		}else {
			System.out.println("编号\t姓名\t性别\t年龄\t电话\t\t邮箱");
			Customer[] custList = customerList.getAllCustomers();
			for (int i = 0; i < total; i++) {
				System.out.println(i+1 + "\t" + custList[i].getName()+
						"\t" + custList[i].getGender()+"\t" + custList[i].getAge()+
						"\t" + custList[i].getPhone()+"\t" + custList[i].getEmail()+"\t");
			}
		}
		System.out.println("-----------------客户列表完成-----------------\n");
	}
	public static void main(String[] args) {
		CustomerView view = new CustomerView();
		view.enterMainMenu();
	}
	
	
}

六、CMUtility

package org.atjinzhao.customer;

import java.util.*;

public class CMUtility {
	public static void main(String[] args) {
		//System.out.println(readMenuSelection());
	}
	private static Scanner scanner = new Scanner(System.in);
	/**
	 * 用于界面菜单的选择。该方法读取键盘用户键入的‘1'-‘5'的任意字符,方法返回。
	 * 
	 */
	public static char readMenuSelection() {
		// 获取功能选择
		char c;
		for (;;) {
			String str = readKeyBoard(1, false);
			c = str.charAt(0);
			if (c != '1' && c != '2' && c != '3' && c != '4' && c != '5') {
				System.out.println("选择错误,请重新输入:");
			} else break;
		}
		return c;
	}
	
	/**
	 * 从键盘读取一个字符,并将其作为方法的返回值。
	 * 获取性别
	 */
	public static char readChar(){
		String str = readKeyBoard(1,false);
		return str.charAt(0);
	}
	/**
	 *从键盘读取一个字符,并将其作为方法的返回值。
	 *如果用户不输入字符而回车,方法将以defaultValue 作为返回值。 
	 *
	 */
	public static char readChar(char defaultValue){
		String str = readKeyBoard(1,true);
		return (str.length()==0)? defaultValue : str.charAt(0);
	}
	/**
	 * 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。
	 * 获取年龄
	 */
	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;
	}
	/**
	 *从键盘读取一个字符,并将其作为方法的返回值。
	 *如果用户不输入字符而回车,方法将以defaultValue 作为返回值。
	 */
	public static int readInt(int defaultValue){
		//修改年龄信息时,不输入信息直接回车
		int n;
		for (; ; ) {
			String str = readKeyBoard(2,true);
			if (str.equals("")) {
				return defaultValue;
			}
			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;
	}
	/**
	 * 从键盘读取一个长度不超过limit的字符串,并将其作为方法的返回值。
	 */
	public static String readString(int limit){
		return readKeyBoard(limit,false);
	}
	/**
	 * 从键盘读取一个长度不超过limit的字符串,并将其作为方法的返回值。
	 * 如果用户不输入字符而直接回车,方法将以defaultVaue作为返回值。
	 */
	public static String readString(int limit,String defaultValue){
		//修改姓名、电话、邮箱时,不输入信息直接回车
		String str = readKeyBoard(limit,true);
		return str.equals("") ? defaultValue : str;
	}
	/**
	 * 用于确认选择的输入。该方法从键盘读取‘Y'或‘N',并将其作为方法的返回值。
	 */
	public static char readConfirmSelection(){
		//获取确认的输入
		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.println("输入长度(不大于" + limit + ")错误,请重新输入“");
				continue;
			}
			break;
		}
		return line;
		
	}

}

加载全部内容

相关教程
猜你喜欢
用户评论