如何获取调用托管bean的getter方法的UIComponent？

Question

是否有可能知道UIComponent调用托管bean中某个属性的getter？

@ManagedBean 
@SessionScoped 
public class SomeBean { 

    private String color; 

    public String getColor() { 
     // Here I would like to know which UIComponent called this method. 
     return color; 
    } 

} 

Answer 1

您可以使用UIComponent#getCurrentComponent()。

public String getColor() { 
    UIComponent component = UIComponent.getCurrentComponent(FacesContext.getCurrentInstance()); 
    // ... 

    return color; 
}