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                            ### IOC(Inversion of Control) 控制反轉,反轉資源獲取的方向 （好萊塢原則）
~~~
傳統的資源查找方式要求組件向容器發起請求查找資源. 作為回應, 容器適時的返回資源. 而應用了 IOC 之后, 則是容器主動地將資源推送給它所管理的組件, 組件所要做的僅是選擇一種合適的方式來接受資源.
~~~
### DI(Dependency Injection) — IOC 的另一種表述方式 
~~~
組件以一些預先定義好的方式(例如: setter 方法)接受來自如容器的資源注入. 
~~~
![](https://box.kancloud.cn/134a5cf0cbab256fd78229ce2fd1284d_744x416.png)

                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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