项目结构：
--- models
--- customer.go
--- service
--- customerService.go
--- views
--- customerView.go
* models 数据模型
* service 业务逻辑
* views 页面展示
package models
import "fmt"
//定义一个客户模型
type Customer struct {
Id int
Name string
Gender string
Age int
Phone string
Email string
}
//定义工厂模式，返回一个Customer实例
func NewCustomer(id int, name string, gender string, age int, phone string, email string) Customer {
return Customer{
Id: id,
Name: name,
Gender: gender,
Age: age,
Phone: phone,
Email: email,
}
}
//
func NewCustomers(name string, gender string, age int, phone string, email string) Customer {
return Customer{
Name: name,
Gender: gender,
Age: age,
Phone: phone,
Email: email,
}
}
// 返回用户信息
func (this Customer) UserInfo() string {
return fmt.Sprintf("%v\t%v\t%v\t%v\t%v\t%v\t", this.Id, this.Name, this.Gender, this.Age, this.Phone, this.Email)
}
package service
import "customerManage/models"
type CustomerService struct {
Customer []models.Customer
customerInt int //表示有多少个用户，同时可以作为新用户的ID号码
}
// 编写一个方法，可以返回 *CustomerService
func NewCustomerService() *CustomerService {
return &CustomerService{}
}
// 更新用户信息
func (this *CustomerService) Update(id int, name string, gender string, age int, phone string, email string) bool {
for k, v := range this.Customer {
if v.Id == id {
this.Customer[k].Name = name
this.Customer[k].Gender = gender
this.Customer[k].Age = age
this.Customer[k].Phone = phone
this.Customer[k].Email = email
}
}
return true
}
// 编写一个方法，可以返回客户切片
func (this *CustomerService) List() []models.Customer {
return this.Customer
}
// 添加客户
func (this *CustomerService) Add(customer models.Customer) bool {
this.customerInt++
customer.Id = this.customerInt
this.Customer = append(this.Customer, customer)
return true
}
// 删除客户
func (this *CustomerService) Delete(id int) bool {
index := this.FindById(id)
if index == -1 {
return false
} else {
this.Customer = append(this.Customer[:index], this.Customer[index+1:]...)
return true
}
}
// 查找客户
func (this *CustomerService) FindById(id int) int {
index := -1
for k, v := range this.Customer {
if v.Id == id {
index = k
break
}
}
return index
}
// 返回用户切片
func (this *CustomerService) UserInfoById(id int) models.Customer {
return this.Customer[id-1]
}
package main
import (
"customerManage/models"
"customerManage/service"
"fmt"
)
type customerView struct {
key string //用于接收用户的输入
loop bool //用于判断用户是否退出
customerService *service.CustomerService
}
// 定一个一个方法，用于显示主菜单
func (this *customerView) mainMenu() {
for {
fmt.Println("*****---------- 客户管理系统 ----------*****")
fmt.Println("*****---------- 1 添加客户 ----------*****")
fmt.Println("*****---------- 2 修改客户 ----------*****")
fmt.Println("*****---------- 3 删除客户 ----------*****")
fmt.Println("*****---------- 4 客户列表 ----------*****")
fmt.Println("*****---------- 5 退 出 ----------*****")
fmt.Println("*****---------- 请选择 ----------*****")
fmt.Scanln(&this.key)
switch this.key {
case "1":
this.Add()
case "2":
this.update()
case "3":
this.delete()
case "4":
this.List()
case "5":
this.quit()
}
if !this.loop {
break
}
}
}
// 更新用户
func (this *customerView) update() {
fmt.Println("请输入用户ID")
id := 0
fmt.Scanln(&id)
if this.customerService.FindById(id) == -1 {
fmt.Println("抱歉，用户不存在")
} else {
infos := this.customerService.UserInfoById(id)
fmt.Printf("姓名(%s)：(回车键表示跳过)\n", infos.Name)
name := ""
fmt.Scanln(&name)
fmt.Printf("性别(%s)：(回车键表示跳过)\n", infos.Gender)
gender := ""
fmt.Scanln(&gender)
fmt.Printf("年龄(%d)：(回车键表示跳过)\n", infos.Age)
age := 0
fmt.Scanln(&age)
fmt.Printf("电话(%s)：(回车键表示跳过)\n", infos.Phone)
phone := ""
fmt.Scanln(&phone)
fmt.Printf("邮箱(%s)：(回车键表示跳过)\n", infos.Email)
email := ""
fmt.Scanln(&email)
if this.customerService.Update(id, name, gender, age, phone, email) {
fmt.Println("更新成功")
} else {
fmt.Println("更新失败")
}
}
}
// 退出系统
func (this *customerView) quit() {
fmt.Println("确定要退出系统么？(y / n)")
for {
choise := ""
fmt.Scanln(&choise)
if choise == "y" || choise == "Y" {
this.loop = false
break
}
if choise == "n" || choise == "N" {
break
}
fmt.Println("输入有误，请重新输入。(y / n)")
}
}
// 删除客户
func (this *customerView) delete() {
fmt.Println("请输入客户ID(-1退出)：")
id := -1
fmt.Scanln(&id)
if id == -1 {
return
} else {
for {
fmt.Println("确认删除该客户么？ y / n")
choise := ""
fmt.Scanln(&choise)
if choise == "y" || choise == "Y" {
if this.customerService.Delete(id) {
fmt.Println("删除成功")
} else {
fmt.Println("没有该客户")
}
break
} else if choise == "n" || choise == "N" {
break
}
}
}
}
//显示所有的客户信息
func (this *customerView) List() {
fmt.Print("\n\n")
fmt.Println("*****---------- 客户列表 ----------*****...")
fmt.Println("ID\t姓名\t性别\t年龄\t电话\t邮箱")
for _, v := range this.customerService.List() {
fmt.Println(v.UserInfo())
}
fmt.Println("*****---------- 客户列表完成 ----------*****...")
fmt.Print("\n\n")
}
func (this *customerView) Add() {
fmt.Println("*****---------- 添加客户 ----------*****")
fmt.Println("姓名：")
name := ""
fmt.Scanln(&name)
fmt.Println("性别：")
gender := ""
fmt.Scanln(&gender)
fmt.Println("年龄：")
age := 0
fmt.Scanln(&age)
fmt.Println("电话：")
phone := ""
fmt.Scanln(&phone)
fmt.Println("邮箱：")
email := ""
fmt.Scanln(&email)
new_customer := models.NewCustomers(name, gender, age, phone, email)
if this.customerService.Add(new_customer) {
fmt.Println("*****---------- 添加完成 ----------*****")
} else {
fmt.Println("*****---------- 添加失败 ----------*****")
}
}
// view文件夹 负责视图
// service文件夹 负责业务逻辑
// models文件夹 负责数据
func main() {
var customerView = customerView{
key: "",
loop: true,
customerService: service.NewCustomerService(),
}
customerView.mainMenu()
}
image.png
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