你是对的——如果你像这样创建你的组件:

You were correct -- if you create your component like this:

<p:selectBooleanCheckbox value="val" widgetVar="myCheckbox"/>

您可以通过引用它的 widgetVar 来访问复选框，在本例中调用 PrimeFaces 客户端 API 将其标记为已选中:

You can access the checkbox simply by refering to its widgetVar, in this case calling the PrimeFaces client-side API to mark it as checked:

<script>
   myCheckbox.check();
</script>

然后，您可以将主复选框的 onchange 事件绑定到一个 javascript 方法，该方法根据主复选框的状态检查或取消选中所有从属"复选框的状态(建议您将状态存储在隐藏字段中).

You could then tie the onchange event of your master checkbox to a javascript method that checked or unchecked the state of all the "slave" checkboxes depending on the state of the master checkbox (would suggest you store the state in a hidden field).

请注意，处理更改"ajax 事件并在服务器端实现检查/取消检查逻辑可能会让您的生活更轻松.只需确保在 p:ajax 组件的更新属性中提供所有从属复选框的所有 id:

Note, it may make your life easier to instead handle the "change" ajax event and implement the check/uncheck logic on the server side. Just make sure that you provide all the ids of all the slave checkboxes in the update attribute of the p:ajax component:

<p:selectBooleanCheckbox id="masterChkBox" ...>
  <p:ajax event="change" listener="#{yourBean.handleMasterChange}" update="...all slavecheckbox ids..."/>
</p:selectBooleanCheckbox>