核心思想是分割不同的层级，降低耦合。
代码示例
using System;
namespace Factory1
{
//客户端只需要知道这个类调用的类
public class Facade
{
SubSystemOne one;
SubSystemTwo two;
SubSystemThree three;
SubSystemFour four;
public Facade ()
{
one = new SubSystemOne();
two = new SubSystemTwo ();
three = new SubSystemThree ();
four = new SubSystemFour ();
}
public void MethodOne(){
Console.WriteLine ("MethodA");
one.MethodOne ();
two.MethodTwo ();
three.MethodThree ();
four.MethodFour ();
}
public void MethodTwo(){
Console.WriteLine ("MethodB");
one.MethodOne ();
two.MethodTwo ();
three.MethodThree ();
four.MethodFour ();
}
}
class SubSystemOne{
public void MethodOne()
{
Console.WriteLine ("Method One");
}
}
class SubSystemTwo{
public void MethodTwo(){
Console.WriteLine("Method Two");
}
}
class SubSystemThree{
public void MethodThree(){
Console.WriteLine("Method Three");
}
}
class SubSystemFour{
public void MethodFour(){
Console.WriteLine("Method Four");
}
}
class MainClass
{
public static void Main (string[] args)
{
Facade f = new Facade ();
f.MethodOne ();
f.MethodTwo ();
Console.Read ();
}
}
}
- 运行结果
MethodA
Method One
Method Two
Method Three
Method Four
MethodB
Method One
Method Two
Method Three
Method Four
