当这个属性没有出现或者值为FALSE时，只在portlet请求作用域维护动作的请求参数。

When this attribute isn't present or is FALSE the action's request parameters are only maintained for the duration of the portlet request scope.

youdao

Open Session in View模式的一个缺点是持久化上下文对象被高效地划定到用户请求作用域内。

A downside of the Open Session in View pattern is that the persistence-context object is effectively scoped to a user request.

youdao

这意味着如果一个值是短期作用域存储的，例如页面或请求作用域，那么当JSF生命周期到达Restore View阶段时，这个值将消失。

This means that if a value is stored in a short-term scope, such as page or request scope, it will be absent by the time the JSF life cycle arrives at the Restore View phase.

youdao