如何触发对viewscoped bean的破坏? [英] How to trigger destruction of viewscoped bean?

问题描述

我有一个@ViewScoped注释的托管bean，其@PostContruct方法从数据库中获取一个列表，以显示在视图的表中. 现在，当我删除一个项目时，我希望在视图中看到更改.
为了保持这种动态和可重用性，我只想从数据库中删除(而不是从列表中手动删除).因此，我需要销毁/重新创建我认为的bean.现在，我通过导航到同一视图来执行此操作.但是我的方法不可重用.
我可以手动销毁bean或导航到同一视图，而无需显式导航到该特定视图(可重用性)吗?

I have a @ViewScoped-annotated managedbean whose @PostContruct-method fetches a list from database to be displayed in a table in the view.
Now when I delete an item I want the changes to be seen in the view.
To keep this dynamic and reusable I only want to delete from database (not manually from list). So I need to destroy/recreate the bean I suppose. Now I do this by navigating to the same view. But the way I do is not reusable.
Can I just destroy the bean manually or navigate to the same view without explicitly navigating to THAT specific view (reusability)?

我正在使用JSF 2.1

I am using JSF 2.1

推荐答案

您已经在正确的轨道上. viewMap就像其他任何地图一样；您可以按名称删除ViewScoped bean.请原谅残暴的链接:

You're already on the right track. viewMap is just like any other map; You can remove a ViewScoped bean by name. Please excuse the atrocious chaining:

FacesContext.getCurrentInstance().getViewRoot().getViewMap().remove("yourBean");

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