实现享元模式示例，添加服装、服装工厂和客户类，增强代码可读性

2026-01-02 01:34:47 +08:00
parent 4f8d653153
commit 4589debb92
3 changed files with 281 additions and 0 deletions
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+/*
+实例：
+汤宝宝开了一家服装租赁店，好多客人来店里租衣服~
+*/
+
+// 享元对象 - 服装
+class Clothing {
+  private style: string;
+  private size: string;
+  private color: string;
+
+  constructor(style: string, size: string, color: string) {
+    this.style = style;
+    this.size = size;
+    this.color = color;
+  }
+
+  show() {
+    console.log(
+      `服装款式: ${this.style}, 尺码: ${this.size}, 颜色: ${this.color}`
+    );
+  }
+}
+
+// 享元工厂 - 服装店
+class ClothingFactory {
+  private clothingPool: { [key: string]: Clothing };
+
+  constructor() {
+    this.clothingPool = {};
+  }
+
+  getClothing(style: string, size: string, color: string): Clothing {
+    const key = `${style}-${size}-${color}`;
+    if (!this.clothingPool[key]) {
+      this.clothingPool[key] = new Clothing(style, size, color);
+    }
+    return this.clothingPool[key];
+  }
+
+  showStock() {
+    console.log("\n服装库存:");
+    for (const key in this.clothingPool) {
+      console.log(`Key: ${key} ->`);
+      this.clothingPool[key].show();
+    }
+  }
+}
+
+// 客人
+class Customer {
+  private name: string;
+  clothing: Clothing[];
+
+  constructor(name: string) {
+    this.name = name;
+    this.clothing = [];
+  }
+
+  rentClothing(clothing: Clothing) {
+    console.log(`${this.name} 租了一件服装.`);
+    this.clothing.push(clothing);
+    clothing.show();
+  }
+
+  showClothing() {
+    console.log(`\n客人${this.name}租赁的服装有：`);
+    this.clothing.forEach((c) => c.show());
+  }
+}
+
+(function () {
+  console.log("============= 享元模式 =============");
+  const factory = new ClothingFactory();
+
+  // 客人1租衣服
+  const customer1 = new Customer("小红");
+  customer1.rentClothing(factory.getClothing("连衣裙", "M", "红色"));
+  customer1.rentClothing(factory.getClothing("牛仔裤", "L", "蓝色"));
+
+  // 客人2租衣服
+  const customer2 = new Customer("小明");
+  customer2.rentClothing(factory.getClothing("连衣裙", "M", "红色")); // 共享同一件连衣裙
+  customer2.rentClothing(factory.getClothing("夹克", "XL", "黑色"));
+
+  console.log();
+
+  // 显示租赁情况
+  customer1.showClothing();
+  customer2.showClothing();
+
+  // 显示服装库存
+  factory.showStock();
+
+  console.log("\n=========== 享元模式结束 ===========");
+})();