103 lines
2.2 KiB
Go
103 lines
2.2 KiB
Go
package main
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import "fmt"
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/*
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实例：
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汤宝宝开了一家服装租赁店，好多客人来店里租衣服~
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*/
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// 享元对象 - 服装
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type Clothing struct {
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style string
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size string
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color string
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}
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func (c *Clothing) Show() {
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fmt.Printf("服装款式：%s，尺码：%s，颜色：%s\n", c.style, c.size, c.color)
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}
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// 享元工厂 - 服装店
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type ClothingFactory struct {
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clothingPool map[string]*Clothing
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}
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func NewClothingFactory() *ClothingFactory {
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return &ClothingFactory{
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clothingPool: make(map[string]*Clothing),
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}
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}
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func (f *ClothingFactory) GetClothing(style, size, color string) *Clothing {
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key := style + "-" + size + "-" + color
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if clothing, exists := f.clothingPool[key]; exists {
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return clothing
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}
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newClothing := &Clothing{style: style, size: size, color: color}
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f.clothingPool[key] = newClothing
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return newClothing
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}
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func (f *ClothingFactory) ShowStock() {
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fmt.Println("\n服装库存：")
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for key, clothing := range f.clothingPool {
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fmt.Printf("Key: %s -> ", key)
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clothing.Show()
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}
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}
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// 客人
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type Customer struct {
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name string
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clothing []*Clothing
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}
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func NewCustomer(name string) *Customer {
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return &Customer{
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name: name,
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clothing: []*Clothing{},
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}
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}
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func (c *Customer) RentClothing(clothing *Clothing) {
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fmt.Printf("%s 租了一件服装: ", c.name)
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clothing.Show()
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c.clothing = append(c.clothing, clothing)
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}
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func (c *Customer) ShowClothing() {
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fmt.Printf("\n客人%s租赁的服装有：\n", c.name)
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for _, cloth := range c.clothing {
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cloth.Show()
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}
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}
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func main() {
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fmt.Println("============= 享元模式 =============")
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factory := NewClothingFactory()
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// 客人1租衣服
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customer1 := NewCustomer("小红")
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customer1.RentClothing(factory.GetClothing("连衣裙", "M", "红色"))
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customer1.RentClothing(factory.GetClothing("牛仔裤", "L", "蓝色"))
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// 客人2租衣服
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customer2 := NewCustomer("小明")
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customer2.RentClothing(factory.GetClothing("连衣裙", "M", "红色")) // 共享同一件连衣裙
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customer2.RentClothing(factory.GetClothing("西裤", "S", "白色"))
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fmt.Println()
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// 显示租赁情况
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customer1.ShowClothing()
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customer2.ShowClothing()
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// 显示服装库存
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factory.ShowStock()
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fmt.Println()
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fmt.Println("=========== 享元模式结束 ===========")
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}
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