src下分了三个文件夹分别是model、view、service model里面的代码
package model import "fmt" //声明一个customer结构体 type Customer struct { Id int Name string Gender string Age int Phone string Email string } //编写工厂模式方法，返回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, } } //构建不带id的方法 func NewCustomer2(name string, gender string, age int, phone string, email string) Customer { return Customer{ Name: name, Gender: gender, Age: age, Phone: phone, Email: email, } } //返回用户的信息，格式化后的字符串 func (this Customer) GetInfo() string { info := 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) return info }service里的代码
package service import ( "../model" ) //customerService完成对customer的操作 type CustomerService struct { customers []model.Customer //声明字段，表示当前切片含有多少个客户，该字段可以做客户编号 customerNum int } //编写一个方法 ，可以返回 *CustomerService func NewCustomerService() *CustomerService { //为了看到客户在切片中，初始化一个客户 customerService := &CustomerService{} customerService.customerNum = 1 //customer := model.NewCustomer(1, "张三", "男", 20, "112", "12@qq.com") //customerService.customers = append(customerService.customers, customer) return customerService } //添加客户到customer切片 //一定要用指针的方式 func (this *CustomerService) Add(customer model.Customer) bool { //确定分配一个id的规则，就是添加的顺序 this.customerNum++ customer.Id = this.customerNum this.customers = append(this.customers, customer) return true } //修改用户信息 func (this *CustomerService) Edit(customer model.Customer) bool { //先判断要从修改的id是否在客户列表中 index := this.FindById(customer.Id) if index == -1 { return false } this.customers = append(append(this.customers[:index], customer), this.customers[index+1:]...) return true } //返回客户切片 func (this *CustomerService) List() []model.Customer { return this.customers } //根据id删除客户(从切片删除) func (this *CustomerService) Delete(id int) bool { index := this.FindById(id) if index == -1 { //说明没有这个客户 return false } //如何从切片中删除元素 this.customers = append(this.customers[:index], this.customers[index+1:]...) return true } //根据id查找客户在切片中对应的下标，如果没有该客户，返回-1 func (this *CustomerService) FindById(id int) int { index := -1 //遍历this.customer切片 for i := 0; i < len(this.customers); i++ { if this.customers[i].Id == id { index = i } } return index } func (this *CustomerService) FindCustomerById(id int) model.Customer { index := -1 //遍历this.customer切片 for i := 0; i < len(this.customers); i++ { if this.customers[i].Id == id { index = i } } return this.customers[index] }view
package main import ( "fmt" "../model" "../service" ) type customerView struct { key string //接受用户输入 loop bool //表示是否循环显示主菜单 //增加一个customerService字段 customerService *service.CustomerService } func (this *customerView) showMenu() { for { fmt.Println("-----------------------------客户信息管理软件--------------------\n") 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1-5") fmt.Scan(&this.key) switch this.key { case "1": this.add() case "2": this.edit() case "3": this.detete() case "4": this.list() case "5": this.exit() default: fmt.Println("输入有误，请重新输入") } if !this.loop { break } } fmt.Println("你退出了软件的使用。。。。") } func (this *customerView) exit() { fmt.Println("确认是否退出（y/n）") for { fmt.Scan(&this.key) if this.key == "Y" || this.key == "y" || this.key == "N" || this.key == "n" { break } fmt.Println("你的输入有误，请重新输入，确认是否退出（y/n）") } if this.key == "y" || this.key == "Y" { this.loop = false } } //显示所有客户的信息 func (this *customerView) list() { //首先获取当前所有的客户信息(在切片中) customers := this.customerService.List() fmt.Println("-----------------------------客户列表展示--------------------\n") fmt.Println("编号\t姓名\t性别\t年龄\t电话\t邮箱\n") for i := 0; i < len(customers); i++ { fmt.Println(customers[i].GetInfo()) } fmt.Println("-----------------------------客户列表完成-------------------\n") } //得到用户的输入，信息构建新的客户，并完成添加 func (this *customerView) add() { fmt.Println("-----------------------------添加客户--------------------\n") fmt.Printf("姓名：") name := "" fmt.Scan(&name) fmt.Printf("性别") gender := "" fmt.Scan(&gender) fmt.Printf("年龄") age := 0 fmt.Scan(&age) fmt.Printf("电话") phone := "" fmt.Scan(&phone) fmt.Printf("邮箱") email := "" fmt.Scan(&email) //构建新的customer实例 //注意，id号么有让用户输入，id是唯一的，需要系统分配 customer := model.NewCustomer2(name, gender, age, phone, email) if this.customerService.Add(customer) { fmt.Println("----------------------添加完成-----------------") } else { fmt.Println("----------------------添加失败-----------------") } } //得到用户的输入，删除该id func (this *customerView) detete() { fmt.Println("---------------------删除客户-----------------") fmt.Println("请选择待删除客户编号（-1退出）") id := -1 fmt.Scan(&id) if id == -1 { return //放弃删除操作 } fmt.Println("确认是否删除(y/n)") choice := "" fmt.Scan(&choice) if choice == "y" || choice == "Y" { //调用serviced的delete方法 if this.customerService.Delete(id) { fmt.Println("-----------------------删除完成---------------------") } else { fmt.Println("-----------------------删除失败，输入的id号不存在---------------------") } } } func (this *customerView) edit() { fmt.Println("----------------------------修改客户信息--------------------\n") fmt.Println("请输入要修改的客户id,(-1)退出") id := -1 fmt.Scan(&id) if id == -1 { return //放弃删除操作 } fmt.Printf("姓名：") name := "" fmt.Scan(&name) // this.customerService.customers[id].name = name fmt.Printf("性别") gender := "" fmt.Scan(&gender) fmt.Printf("年龄") age := 0 fmt.Scan(&age) fmt.Printf("电话") phone := "" fmt.Scan(&phone) fmt.Printf("邮箱") email := "" fmt.Scan(&email) //构建新的customer实例 //注意，id号么有让用户输入，id是唯一的，需要系统分配 customer := model.NewCustomer(id, name, gender, age, phone, email) if this.customerService.Edit(customer) { fmt.Println("----------------------修改完成-----------------") } else { fmt.Println("----------------------修改失败-----------------") } } func main() { //在主函数中，创建一个customerView显示主菜单 customerView := customerView{ key: "", loop: true, } //完成对customerView结构体中customerService字段的初始化 customerView.customerService = service.NewCustomerService() //显示主菜单 customerView.showMenu() }