软件设计师23种设计模式总结
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1 Abstract Factory（抽象工厂）提供一个创建一系列相关或互相依赖对象的接口，而无须制定它们具体的类。
Abstract Factory抽象工厂
class Program
{
static void Main(string[] args)
{
AbstractFactory factory1 = new ConcreteFactory1();
Client c1 = new Client(factory1);
c1.Run();
AbstractFactory factory2 = new ConcreteFactory2();
Client c2 = new Client(factory2);
c2.Run();
Console.Read();
}
}
abstract class AbstractFactory
{
public abstract AbstractProductA CreateProductA();
public abstract AbstractProductB CreateProductB();
}
class ConcreteFactory1 : AbstractFactory
{
public override AbstractProductA CreateProductA()
{
return new ProductA1();
}
public override AbstractProductB CreateProductB()
{
return new ProductB1();
}
}
class ConcreteFactory2 : AbstractFactory
{
public override AbstractProductA CreateProductA()
{
return new ProductA2();
}
public override AbstractProductB CreateProductB()
{
return new ProductB2();
}
}
abstract class AbstractProductA
{
}
abstract class AbstractProductB
{
public abstract void Interact(AbstractProductA a);
}
class ProductA1 : AbstractProductA
{
}
class ProductB1 : AbstractProductB
{
public override void Interact(AbstractProductA a)
{
Console.WriteLine(this.GetType().Name +
" interacts with " + a.GetType().Name);
}
}
class ProductA2 : AbstractProductA
{
}
class ProductB2 : AbstractProductB
{
public override void Interact(AbstractProductA a)
{
Console.WriteLine(this.GetType().Name +
" interacts with " + a.GetType().Name);
}
}
class Client
{
private AbstractProductA AbstractProductA;
private AbstractProductB AbstractProductB;
// Constructor
public Client(AbstractFactory factory)
{
AbstractProductB = factory.CreateProductB();
AbstractProductA = factory.CreateProductA();
}
public void Run()
{
AbstractProductB.Interact(AbstractProductA);
}
}2 Builder（生成器）
将一个复杂对象的构建与它的表示分离，使得同样的构建过程可以创建不同的表示。
Builder 生成器
class Program
{
static void Main(string[] args)
{
Director director = new Director();
Builder b1 = new ConcreteBuilder1();
Builder b2 = new ConcreteBuilder2();
director.Construct(b1);
Product p1 = b1.GetResult();
p1.Show();
director.Construct(b2);
Product p2 = b2.GetResult();
p2.Show();
Console.Read();
}
}
class Director
{
public void Construct(Builder builder)
{
builder.BuildPartA();
builder.BuildPartB();
}
}
abstract class Builder
{
public abstract void BuildPartA();
public abstract void BuildPartB();
public abstract Product GetResult();
}
class ConcreteBuilder1 : Builder
{
private Product product = new Product();
public override void BuildPartA()
{
product.Add("部件A");
}
public override void BuildPartB()
{
product.Add("部件B");
}
public override Product GetResult()
{
return product;
}
}
class ConcreteBuilder2 : Builder
{
private Product product = new Product();
public override void BuildPartA()
{
product.Add("部件X");
}
public override void BuildPartB()
{
product.Add("部件Y");
}
public override Product GetResult()
{
return product;
}
}
class Product
{
IList<string> parts = new List<string>();
public void Add(string part)
{
parts.Add(part);
}
public void Show()
{
Console.WriteLine("\n产品 创建 ----");
foreach (string part in parts)
{
Console.WriteLine(part);
}
}
}
文：杨
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