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中某些属性的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;
}