Java实战之客户信息管理系统

一、软件设计结构

对于初学者来说，弄清框架显得尤为重要
首先该软件有以下三种模块组成

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：");
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