golang实战--客户信息管理系统

总计架构图：

model/customer.go

package model

import (
    "fmt"
)

type Customer struct {
    Id     int
    Name   string
    Gender 
    Age    
    Phone  
    Email  
}

func NewCustomer(id int,name string,gender ) Customer {
    return Customer{
        Id:     id,Name:   name,Gender: gender,Age:    age,Phone:  phone,Email:  email,}
}    

func NewCustomer2(name  Customer{
        Name:   name,}
}

func (c Customer) GetInfo()  {
    info := fmt.Sprintf(%v\t%v\t%v\t%v\t%v\t%v\t,c.Id,c.Name,c.Gender,c.Age,c.Phone,c.Email)
     info
}

service/customerService.go

package service

import (
    go_code/project_6/model
)

//增删查改
type CustomerService  {
    customers  []model.Customer
    customerId 
}

func NewCustomerService() *CustomerService {
    customerService := &CustomerService{}
    customerService.customerId = 1
    customer := model.NewCustomer(1,张三",1)">男20,1)">15927776543347688971@qq.com)
    customerService.customers = append(customerService.customers,customer)
     customerService
}

func (cs *CustomerService) List() []model.Customer {
     cs.customers
}

func (cs *CustomerService) Add(customer model.Customer) bool {
    确定一个添加id的规则，就是添加的顺序
    cs.customerId++
    customer.Id = cs.customerId
    cs.customers = append(cs.customers,1)">return true
}

根据Id查找客户在切片中的对应下标，如果没有则返回-1
func (cs *CustomerService) FindById(id int)  {
    index := -1
    for i := 0; i < len(cs.customers); i++ {
        if cs.customers[i].Id == id {
            找到了
            index = i
        }
    }
     index
}

根据Id删除客户
func (cs *CustomerService) Delete(id  {
    index := cs.FindById(id)
    if index == -false
    }
    从切片中删除元素
    cs.customers = append(cs.customers[:index],cs.customers[index+:]...)
    
}

func (cs *CustomerService) GetinfoById(id ) model.Customer {
    i := id -  cs.customers[i]
}

根据id修改客户信息
func (cs *CustomerService) Update(id  id {
            cs.customers[i].Name = customer.Name
            cs.customers[i].Gender = customer.Gender
            cs.customers[i].Age = customer.Age
            cs.customers[i].Phone = customer.Phone
            cs.customers[i].Email = customer.Email
        }
    }
    
}

view/customerView.go

package main

import (
    "
    go_code/project_6/service
)

type customerView 定义必要的字段
    key             string 接受用户输入
    loop            bool   用于循环判断
    customerService *service.CustomerService
}

func (cv *customerView) mainMenu() {
    for {
        fmt.Println(------------------客户信息管理软件---------------------)
        fmt.Println(                    1.添加客户                    2.修改客户                    3.删除客户                    4.客户列表                    5.退   出)
        fmt.Print(请选择1-5：)
        fmt.Scanln(&cv.key)
        switch cv.key {
        case 1:
            cv.add()
        2:
            cv.update()
        3:
            cv.delete()
        4:
            cv.list()
        5:
            cv.logout()
        default:
            fmt.Println(你的输入有误，请重新输入)
        }
        if !cv.loop {
            break
        }
    }
    fmt.Println(你已退出了客户关系管理系统。。。)
}

func (cv *customerView) list() {
    首先获取当前客户所有信息
    customers := cv.customerService.List()
    fmt.Println(--------------------客户列表--------------------------)
    fmt.Println(编号\t姓名\t性别\t年龄\t电话\t\t邮箱)
    0; i < len(customers); i++ {
        fmt.Println(customers[i].GetInfo())
    }
    fmt.Println(------------------客户列表完成------------------------customerView) add() {
    fmt.Println(--------------------添加客户--------------------------)
    fmt.Print(姓名：)
    name := ""
    fmt.Scanln(&name)
    fmt.Print(性别：)
    gender := gender)
    fmt.Print(年龄：)
    age := 0age)
    fmt.Print(电话：)
    phone := phone)
    fmt.Print(邮箱：)
    email := email)
    customer := model.NewCustomer2(name,gender,age,phone,email)
    if cv.customerService.Add(customer) {
        fmt.Println(--------------------添加成功--------------------------)
    } else--------------------添加失败--------------------------)
    }

    fmt.Println(--------------------添加完成--------------------------)
}

func (cv *customerView) () {
    fmt.Println(--------------------删除客户--------------------------请选择要删除客户的客户编号（-1退出）：)
    id := -id)
    if id == -
    }
    fmt.Println(确认是否删除？y/n)
    choice := choice)
    if choice == y" || choice == n cv.customerService.Delete(id) {
            fmt.Println(--------------------删除完成--------------------------)
        }  {
            fmt.Println(-----------------输入id不存在，请重新输入--------------)
        }
    }

}

func (cv *customerView) update() {
    fmt.Print(请输入要修改的id：)
    id := if cv.customerService.FindById(id) != - {
        customer := cv.customerService.GetinfoById(id)
        fmt.Printf(姓名（%v：）
        fmt.Scanln(&name)
        fmt.Printf(性别（%v）：gender)
        fmt.Printf(年龄（%v）：age)
        fmt.Printf(电话（%v）：phone)
        fmt.Printf(邮箱（%v）：email)
        customer2 :=)
    }
}

func (cv *customerView) logout() {
    fmt.Println(确认是否退出？y/n {
        fmt.Scanln(&if cv.key == " || cv.key ==  {
            
        }
        fmt.Println(你的输入有误，请从新输入)
    }
     {
        cv.loop = 
    }
}

func main() {
    var cv customerView
    cv.loop = 
    cv.customerService = service.NewCustomerService()
    cv.mainMenu()
}