將一個類的接口轉換成客戶希望的另外一個接口。使得原本由于接口不兼容而不能一起工作的那些類可以一起工作。
應用場景：希望復用一些現存的類，但是接口又與復用環境要求不一致。
模式特點：將一個類的接口轉換成為客戶希望的另外一個接口。
分類：類適配器（通過多重繼承）、對象適配器。
來通過例子說明，下面是用戶通過適配器使用一個類的方法
class Target: def Request(): print "common request."class Adaptee(Target): def SpecificRequest(self): print "specific request."class Adapter(Target): def __init__(self,ada): self.adaptee = ada def Request(self): self.adaptee.SpecificRequest()if __name__ == "__main__": adaptee = Adaptee() adapter = Adapter(adaptee) adapter.Request()
類圖：
實例：
我們再來看一個簡單的Adapter例子
#encoding=utf-8 # #by panda #適配器模式 def printInfo(info): print unicode(info, 'utf-8').encode('gbk') #球員類 class Player(): name = '' def __init__(self,name): self.name = name def Attack(self,name): pass def Defense(self): pass #前鋒 class Forwards(Player): def __init__(self,name): Player.__init__(self,name) def Attack(self): printInfo("前鋒%s 進攻" % self.name) def Defense(self,name): printInfo("前鋒%s 防守" % self.name) #中鋒（目標類） class Center(Player): def __init__(self,name): Player.__init__(self,name) def Attack(self): printInfo("中鋒%s 進攻" % self.name) def Defense(self): printInfo("中鋒%s 防守" % self.name) #后衛 class Guards(Player): def __init__(self,name): Player.__init__(self,name) def Attack(self): printInfo("后衛%s 進攻" % self.name) def Defense(self): printInfo("后衛%s 防守" % self.name) #外籍中鋒（待適配類） #中鋒 class ForeignCenter(Player): name = '' def __init__(self,name): Player.__init__(self,name) def ForeignAttack(self): printInfo("外籍中鋒%s 進攻" % self.name) def ForeignDefense(self): printInfo("外籍中鋒%s 防守" % self.name) #翻譯（適配類） class Translator(Player): foreignCenter = None def __init__(self,name): self.foreignCenter = ForeignCenter(name) def Attack(self): self.foreignCenter.ForeignAttack() def Defense(self): self.foreignCenter.ForeignDefense() def clientUI(): b = Forwards('巴蒂爾') m = Guards('麥克格雷迪') ym = Translator('姚明') b.Attack() m.Defense() ym.Attack() ym.Defense() return if __name__ == '__main__': clientUI(); 
