{"id":51,"date":"2025-03-25T22:39:31","date_gmt":"2025-03-25T14:39:31","guid":{"rendered":"https:\/\/blog.nimail.cn\/?p=51"},"modified":"2025-03-25T22:42:43","modified_gmt":"2025-03-25T14:42:43","slug":"23%e7%a7%8d%e8%ae%be%e8%ae%a1%e6%a8%a1%e5%bc%8f%e8%af%a6%e8%a7%a3%ef%bc%8c%e5%b9%b6%e7%bb%99%e5%87%ba%e4%bb%a3%e7%a0%81%e7%a4%ba%e4%be%8b","status":"publish","type":"post","link":"https:\/\/blog.nimail.cn\/best-articles\/23%e7%a7%8d%e8%ae%be%e8%ae%a1%e6%a8%a1%e5%bc%8f%e8%af%a6%e8%a7%a3%ef%bc%8c%e5%b9%b6%e7%bb%99%e5%87%ba%e4%bb%a3%e7%a0%81%e7%a4%ba%e4%be%8b\/","title":{"rendered":"23\u79cd\u8bbe\u8ba1\u6a21\u5f0f\u8be6\u89e3\uff0c\u5e76\u7ed9\u51fa\u4ee3\u7801\u793a\u4f8b"},"content":{"rendered":"\n

23 \u79cd\u8bbe\u8ba1\u6a21\u5f0f\u6309\u7167 \u521b\u5efa\u578b\u3001\u7ed3\u6784\u578b\u3001\u884c\u4e3a\u578b<\/strong> \u4e09\u7c7b\u8fdb\u884c\u5206\u7c7b\uff0c\u6bcf\u79cd\u6a21\u5f0f\u5305\u62ec\u5b9a\u4e49\u3001\u9002\u7528\u573a\u666f\u53ca Java \u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n\n\n\n

\n\n\n\n

\u4e00\u3001\u521b\u5efa\u578b\u6a21\u5f0f\uff08Creational Patterns\uff09<\/strong><\/h2>\n\n\n\n

\u521b\u5efa\u578b\u6a21\u5f0f\u7528\u4e8e \u521b\u5efa\u5bf9\u8c61<\/strong>\uff0c\u5b83\u4eec\u63d0\u4f9b\u4e86\u66f4\u7075\u6d3b\u548c\u53ef\u7ef4\u62a4\u7684\u5bf9\u8c61\u521b\u5efa\u65b9\u5f0f\u3002<\/p>\n\n\n\n

1. \u5355\u4f8b\u6a21\u5f0f\uff08Singleton Pattern\uff09<\/strong><\/h3>\n\n\n\n

\u5b9a\u4e49<\/strong>\uff1a\u786e\u4fdd\u4e00\u4e2a\u7c7b\u53ea\u6709\u4e00\u4e2a\u5b9e\u4f8b\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e2a\u5168\u5c40\u8bbf\u95ee\u70b9\u3002<\/p>\n\n\n\n

\u9002\u7528\u573a\u666f<\/strong>\uff1a<\/p>\n\n\n\n

    \n
  • \u9700\u8981\u5168\u5c40\u552f\u4e00\u5bf9\u8c61\uff0c\u5982\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u3001\u65e5\u5fd7\u7ba1\u7406\u5668\u3001\u7ebf\u7a0b\u6c60\u7b49\u3002<\/li>\n<\/ul>\n\n\n\n

    \u793a\u4f8b\u4ee3\u7801\uff08\u61d2\u6c49\u5f0f\uff0c\u7ebf\u7a0b\u5b89\u5168\uff09<\/strong>\uff1a<\/p>\n\n\n\n

    public class Singleton {
        private static volatile Singleton instance;
        
        private Singleton() {}  \/\/ \u79c1\u6709\u6784\u9020\u65b9\u6cd5\uff0c\u9632\u6b62\u5916\u90e8\u5b9e\u4f8b\u5316
        
        public static Singleton getInstance() {
            if (instance == null) {
                synchronized (Singleton.class) {
                    if (instance == null) {
                        instance = new Singleton();
                    }
                }
            }
            return instance;
        }
    }
    <\/code><\/pre>\n\n\n\n
    \n\n\n\n
    2. \u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f\uff08Factory Method Pattern\uff09<\/strong><\/h3>\n\n\n\n
    \u5b9a\u4e49<\/strong>\uff1a\u5b9a\u4e49\u4e00\u4e2a\u521b\u5efa\u5bf9\u8c61\u7684\u63a5\u53e3\uff0c\u8ba9\u5b50\u7c7b\u51b3\u5b9a\u5b9e\u4f8b\u5316\u54ea\u4e00\u4e2a\u7c7b\u3002<\/p>\n\n\n\n
    \u9002\u7528\u573a\u666f<\/strong>\uff1a<\/p>\n\n\n\n
      \n
    • \u9700\u8981\u6839\u636e\u4e0d\u540c\u6761\u4ef6\u521b\u5efa\u4e0d\u540c\u5b50\u7c7b\u5bf9\u8c61\u3002<\/li>\n<\/ul>\n\n\n\n
      \u793a\u4f8b\u4ee3\u7801<\/strong>\uff1a<\/p>\n\n\n\n
      interface Product {
          void use();
      }

      class ConcreteProductA implements Product {
          public void use() {
              System.out.println(\"\u4f7f\u7528\u4ea7\u54c1A\");
          }
      }

      class ConcreteProductB implements Product {
          public void use() {
              System.out.println(\"\u4f7f\u7528\u4ea7\u54c1B\");
          }
      }

      class Factory {
          public static Product createProduct(String type) {
              if (type.equals(\"A\")) return new ConcreteProductA();
              else if (type.equals(\"B\")) return new ConcreteProductB();
              return null;
          }
      }

      public class FactoryMethodDemo {
          public static void main(String[] args) {
              Product product = Factory.createProduct(\"A\");
              product.use();
          }
      }
      <\/code><\/pre>\n\n\n\n
      \n\n\n\n
      3. \u62bd\u8c61\u5de5\u5382\u6a21\u5f0f\uff08Abstract Factory Pattern\uff09<\/strong><\/h3>\n\n\n\n
      \u5b9a\u4e49<\/strong>\uff1a\u63d0\u4f9b\u4e00\u4e2a\u521b\u5efa \u76f8\u5173\u6216\u4f9d\u8d56\u5bf9\u8c61<\/strong> \u7684\u63a5\u53e3\uff0c\u800c\u65e0\u9700\u6307\u5b9a\u5177\u4f53\u7c7b\u3002<\/p>\n\n\n\n
      \u9002\u7528\u573a\u666f<\/strong>\uff1a<\/p>\n\n\n\n
        \n
      • \u9700\u8981\u521b\u5efa\u4e00\u7cfb\u5217 \u76f8\u5173\u5bf9\u8c61<\/strong>\uff0c\u5982 GUI \u7ec4\u4ef6\uff08Windows \/ Mac \uff09\u3002<\/li>\n<\/ul>\n\n\n\n
        \u793a\u4f8b\u4ee3\u7801<\/strong>\uff1a<\/p>\n\n\n\n
        interface Button {
            void click();
        }

        class WindowsButton implements Button {
            public void click() {
                System.out.println(\"Windows \u6309\u94ae\");
            }
        }

        class MacOSButton implements Button {
            public void click() {
                System.out.println(\"MacOS \u6309\u94ae\");
            }
        }

        interface GUIFactory {
            Button createButton();
        }

        class WindowsFactory implements GUIFactory {
            public Button createButton() {
                return new WindowsButton();
            }
        }

        class MacOSFactory implements GUIFactory {
            public Button createButton() {
                return new MacOSButton();
            }
        }

        public class AbstractFactoryDemo {
            public static void main(String[] args) {
                GUIFactory factory = new WindowsFactory();
                Button button = factory.createButton();
                button.click();
            }
        }
        <\/code><\/pre>\n\n\n\n
        \n\n\n\n
        4. \u5efa\u9020\u8005\u6a21\u5f0f\uff08Builder Pattern\uff09<\/strong><\/h3>\n\n\n\n
        \u5b9a\u4e49<\/strong>\uff1a\u5c06\u4e00\u4e2a\u590d\u6742\u5bf9\u8c61\u7684\u6784\u5efa\u4e0e\u8868\u793a\u5206\u79bb\uff0c\u4f7f\u540c\u6837\u7684\u6784\u5efa\u8fc7\u7a0b\u53ef\u4ee5\u521b\u5efa\u4e0d\u540c\u7684\u8868\u793a\u3002<\/p>\n\n\n\n
        \u9002\u7528\u573a\u666f<\/strong>\uff1a<\/p>\n\n\n\n
          \n
        • \u9700\u8981\u521b\u5efa\u590d\u6742\u5bf9\u8c61\uff0c\u4f46\u6784\u5efa\u8fc7\u7a0b\u7a33\u5b9a\uff0c\u6784\u5efa\u7684\u5404\u90e8\u5206\u53ef\u80fd\u4e0d\u540c\u3002<\/li>\n<\/ul>\n\n\n\n
          \u793a\u4f8b\u4ee3\u7801<\/strong>\uff1a<\/p>\n\n\n\n
          class Product {
              private String partA;
              private String partB;

              public void setPartA(String partA) { this.partA = partA; }
              public void setPartB(String partB) { this.partB = partB; }

              public void show() {
                  System.out.println(\"Product built with: \" + partA + \" and \" + partB);
              }
          }

          class Builder {
              private Product product = new Product();

              public Builder buildPartA(String partA) {
                  product.setPartA(partA);
                  return this;
              }

              public Builder buildPartB(String partB) {
                  product.setPartB(partB);
                  return this;
              }

              public Product build() {
                  return product;
              }
          }

          public class BuilderDemo {
              public static void main(String[] args) {
                  Product product = new Builder().buildPartA(\"A1\").buildPartB(\"B1\").build();
                  product.show();
              }
          }
          <\/code><\/pre>\n\n\n\n
          \n\n\n\n
          5. \u539f\u578b\u6a21\u5f0f\uff08Prototype Pattern\uff09<\/strong><\/h3>\n\n\n\n
          \u5b9a\u4e49<\/strong>\uff1a\u901a\u8fc7\u590d\u5236\u5df2\u6709\u5bf9\u8c61\u6765\u521b\u5efa\u65b0\u5bf9\u8c61\uff0c\u800c\u4e0d\u4f9d\u8d56\u6784\u9020\u51fd\u6570\u3002<\/p>\n\n\n\n
          \u9002\u7528\u573a\u666f<\/strong>\uff1a<\/p>\n\n\n\n
            \n
          • \u9700\u8981\u5feb\u901f\u521b\u5efa\u5bf9\u8c61\uff0c\u4e14\u907f\u514d\u6784\u9020\u8fc7\u7a0b\u7684\u9ad8\u5f00\u9500\u3002<\/li>\n<\/ul>\n\n\n\n
            \u793a\u4f8b\u4ee3\u7801<\/strong>\uff1a<\/p>\n\n\n\n
            class Prototype implements Cloneable {
                private String field;

                public Prototype(String field) { this.field = field; }

                public void show() { System.out.println(\"Field: \" + field); }

                public Prototype clone() throws CloneNotSupportedException {
                    return (Prototype) super.clone();
                }
            }

            public class PrototypeDemo {
                public static void main(String[] args) throws CloneNotSupportedException {
                    Prototype p1 = new Prototype(\"data\");
                    Prototype p2 = p1.clone();
                    p2.show();
                }
            }
            <\/code><\/pre>\n\n\n\n
            \n\n\n\n
            \u4e8c\u3001\u7ed3\u6784\u578b\u6a21\u5f0f\uff08Structural Patterns\uff09<\/strong><\/h2>\n\n\n\n
            \u7ed3\u6784\u578b\u6a21\u5f0f\u7528\u4e8e \u7ec4\u7ec7\u7c7b\u548c\u5bf9\u8c61<\/strong>\uff0c\u4f7f\u7cfb\u7edf\u66f4\u52a0\u7075\u6d3b\u548c\u53ef\u6269\u5c55\u3002<\/p>\n\n\n\n
              \n
            1. \u9002\u914d\u5668\u6a21\u5f0f\uff08Adapter Pattern\uff09<\/li>\n\n\n\n
            2. \u6865\u63a5\u6a21\u5f0f\uff08Bridge Pattern\uff09<\/li>\n\n\n\n
            3. \u7ec4\u5408\u6a21\u5f0f\uff08Composite Pattern\uff09<\/li>\n\n\n\n
            4. \u88c5\u9970\u5668\u6a21\u5f0f\uff08Decorator Pattern\uff09<\/li>\n\n\n\n
            5. \u5916\u89c2\u6a21\u5f0f\uff08Facade Pattern\uff09<\/li>\n\n\n\n
            6. \u4eab\u5143\u6a21\u5f0f\uff08Flyweight Pattern\uff09<\/li>\n\n\n\n
            7. \u4ee3\u7406\u6a21\u5f0f\uff08Proxy Pattern\uff09<\/li>\n<\/ol>\n\n\n\n
              \n\n\n\n
              \u4e09\u3001\u884c\u4e3a\u578b\u6a21\u5f0f\uff08Behavioral Patterns\uff09<\/strong><\/h2>\n\n\n\n
              \u884c\u4e3a\u578b\u6a21\u5f0f\u7528\u4e8e \u5bf9\u8c61\u4e4b\u95f4\u7684\u4ea4\u4e92<\/strong>\uff0c\u4f7f\u7cfb\u7edf\u66f4\u6613\u6269\u5c55\u548c\u7ef4\u62a4\u3002<\/p>\n\n\n\n
                \n
              1. \u8d23\u4efb\u94fe\u6a21\u5f0f\uff08Chain of Responsibility Pattern\uff09<\/li>\n\n\n\n
              2. \u547d\u4ee4\u6a21\u5f0f\uff08Command Pattern\uff09<\/li>\n\n\n\n
              3. \u89e3\u91ca\u5668\u6a21\u5f0f\uff08Interpreter Pattern\uff09<\/li>\n\n\n\n
              4. \u8fed\u4ee3\u5668\u6a21\u5f0f\uff08Iterator Pattern\uff09<\/li>\n\n\n\n
              5. \u4e2d\u4ecb\u8005\u6a21\u5f0f\uff08Mediator Pattern\uff09<\/li>\n\n\n\n
              6. \u5907\u5fd8\u5f55\u6a21\u5f0f\uff08Memento Pattern\uff09<\/li>\n\n\n\n
              7. \u89c2\u5bdf\u8005\u6a21\u5f0f\uff08Observer Pattern\uff09<\/li>\n\n\n\n
              8. \u72b6\u6001\u6a21\u5f0f\uff08State Pattern\uff09<\/li>\n\n\n\n
              9. \u7b56\u7565\u6a21\u5f0f\uff08Strategy Pattern\uff09<\/li>\n\n\n\n
              10. \u6a21\u677f\u65b9\u6cd5\u6a21\u5f0f\uff08Template Method Pattern\uff09<\/li>\n\n\n\n
              11. \u8bbf\u95ee\u8005\u6a21\u5f0f\uff08Visitor Pattern\uff09<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"
                23 \u79cd\u8bbe\u8ba1\u6a21\u5f0f\u6309\u7167 \u521b\u5efa\u578b\u3001\u7ed3\u6784\u578b\u3001\u884c\u4e3a\u578b \u4e09\u7c7b\u8fdb\u884c\u5206\u7c7b\uff0c\u6bcf\u79cd\u6a21\u5f0f\u5305\u62ec\u5b9a\u4e49\u3001\u9002\u7528\u573a\u666f\u53ca Java \u4ee3\u7801\u793a\u4f8b\u3002 \u4e00\u3001\u521b\u5efa\u578b\u6a21\u5f0f\uff08Creational Patterns\uff09 \u521b\u5efa\u578b\u6a21\u5f0f\u7528\u4e8e \u521b\u5efa\u5bf9\u8c61\uff0c\u5b83\u4eec\u63d0\u4f9b\u4e86\u66f4\u7075\u6d3b\u548c\u53ef\u7ef4\u62a4\u7684\u5bf9\u8c61\u521b\u5efa\u65b9\u5f0f\u3002 1. \u5355\u4f8b\u6a21\u5f0f\uff08Singleton Pattern\uff09 \u5b9a\u4e49\uff1a\u786e\u4fdd\u4e00\u4e2a\u7c7b\u53ea\u6709\u4e00\u4e2a\u5b9e\u4f8b\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e2a\u5168\u5c40\u8bbf\u95ee\u70b9\u3002 \u9002\u7528\u573a\u666f\uff1a \u793a\u4f8b\u4ee3\u7801\uff08\u61d2\u6c49\u5f0f\uff0c\u7ebf\u7a0b\u5b89\u5168\uff09\uff1a publi…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-51","post","type-post","status-publish","format-standard","hentry","category-best-articles"],"yoast_head":"\n23\u79cd\u8bbe\u8ba1\u6a21\u5f0f\u8be6\u89e3\uff0c\u5e76\u7ed9\u51fa\u4ee3\u7801\u793a\u4f8b - 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