设计模式之GOF23建造者模式

Posted 2022-06-23 code-fun

组件很多，装配顺序不定

本质：

1，分离了对象子组件的单独构造（Builder负责）和装配（Director负责），从而可以构造出复杂的对象，这个模式适用于某个对象的构建过程复杂的情况下使用

2，实现了构建和装配的解耦

/**建造者用来得到各个组件
 * @author 小帆敲代码
 *
 */
public interface AirshipBuilder
  public Engine getngine();//可用工厂或者单例模式得到对应的组件
  public EscapeTower getEscapeTower();
  public ObitalMoudle getObitalMoudle();

public class FAirshipBuilder implements AirshipBuilder

 @Override
 public Engine getngine()
  System.out.println("建造发动机");
  return new Engine("F牌发动机");
 

 @Override
 public EscapeTower getEscapeTower()
  System.out.println("建造逃生塔");
  return new EscapeTower("F牌");
 

 @Override
 public ObitalMoudle getObitalMoudle()
  System.out.println("建造轨道舱");
  return new ObitalMoudle("F牌轨道舱");
 

/**
 * 装配组件
 * @author 小帆敲代码
 *
 */
public interface AirshipDirector
 //装配
  public Airship directAirship();

public class FAirshipDirector implements AirshipDirector

 private AirshipBuilder builder;
 public FAirshipDirector(AirshipBuilder builder)
  this.builder = builder;
 

 @Override
 public Airship directAirship()
  Engine e=builder.getngine();
  EscapeTower et=builder.getEscapeTower();
  ObitalMoudle o=builder.getObitalMoudle();
  
  //装配
  Airship airship=new Airship();
  airship.setEngine(e);
  airship.setEscapeTower(et);
  airship.setObtalMoudle(o);
  return airship;
 

public class Airship
  private Engine engine;//发动机
  private ObitalMoudle obtalMoudle;//轨道舱
  private EscapeTower escapeTower;//逃生塔
  
  public void lauch()
   System.out.println("发射！！！");
  
  
  public Engine getEngine()
   return engine;
  
  public void setEngine(Engine engine)
   this.engine = engine;
  
  public ObitalMoudle getObtalMoudle()
   return obtalMoudle;
  
  public void setObtalMoudle(ObitalMoudle obtalMoudle)
   this.obtalMoudle = obtalMoudle;
  
  public EscapeTower getEscapeTower()
   return escapeTower;
  
  public void setEscapeTower(EscapeTower escapeTower)
   this.escapeTower = escapeTower;
  
  
  

class Engine
 private String name;
 public Engine(String name)
  this.name = name;
 
 public String getName()
  return name;
 
 public void setName(String name)
  this.name = name;
 

class ObitalMoudle
 private String name;
 public ObitalMoudle(String name)
  this.name = name;
 
 public String getName()
  return name;
 
 public void setName(String name)
  this.name = name;
 

class EscapeTower
 private String name;
 public EscapeTower(String name)
  this.name = name;
 
 public String getName()
  return name;
 
 public void setName(String name)
  this.name = name;
 

public class Client

 public static void main(String[] args)
   FAirshipDirector f=new FAirshipDirector(new FAirshipBuilder());
   Airship airship=f.directAirship();
   
   System.out.println(airship.getEngine().getName());
   
   airship.lauch();