在JSF转换/验证机制之外的action方法中创建FacesMessage？

<h:messages id="messages" />

FacesContext context = FacesContext.getCurrentInstance();

FacesMessage message = new FacesMessage(FacesMessage.SEVERITY_INFO, "摘要", "详细信息");

context.addMessage(null, message);

import javax.faces.application.FacesMessage;
import javax.faces.bean.ManagedBean;
import javax.faces.context.FacesContext;

@ManagedBean
public class MyBean {
    public void myAction() {
        FacesContext context = FacesContext.getCurrentInstance();
        FacesMessage message = new FacesMessage(FacesMessage.SEVERITY_INFO, "摘要", "详细信息");
        context.addMessage(null, message);
    }
}