这是不可能从支持bean的操作方法中。另外有一个，而（真）是非常CPU的效率不高，你宁愿要避免在多用户环境。你在寻找什么是AJAX轮询/推。此不提供在标准JSF实现，也不会在战斧。 PrimeFaces 例如，支持AJAX轮询/推组件的 ＆LT;电话号码：调查＆GT; 和的 ＆LT;号码：推＆GT;

That's not possible from inside the backing bean action method. Also having a while(true) is very CPU-inefficient, you'd rather like to avoid that in a multi-user environment. What you're looking for is ajax poll/push. This is not provided in the standard JSF implementation and also not in Tomahawk. PrimeFaces for example, supports ajax poll/push components <p:poll> and <p:push>.