如何启用/禁用JSF命令按钮

Question

场景如下所示:

屏幕上有两个按钮,比如button1和button2.在页面加载时,button2被禁用.当用户单击button1时,将启用button2.我使用javascript window.onload事件和button1上的onclick事件实现了这个功能.我的问题是,当用户点击button1时,它会触发页面重新加载.话虽如此,在重新加载页面后,由于onload事件,button2被禁用.

有没有其他方法来实现此功能？

顺便说一句,我正在使用primefaces.

Answer 1

primeface页面是这样的,

 <p:commandButton update="panel1"  actionListener="#{bean.button1}" value="button1" disabled="#{bean.disable}"> 
     <f:setPropertyActionListener value="#{false}" target="#{bean.disable}"/>   
 </p:commandButton> 


 <p:commandButton update="panel2"  actionListener="#{bean.button2}" value="button1" disabled="#{!(bean.disable)}"> 
     <f:setPropertyActionListener value="#{true}" target="#{bean.disable}"/>    
 </p:commandButton> 

管理Bean:

 public class Bean {

    private boolean disable;

    // default constructor 
    public Bean(){
       this.disable= false;
    }

    public boolean isDisable() {
       return disable;
    }
    public void setDisable(boolean disable) {
       this.disable = disable;
    }
}