如何在jsf中获取应用程序范围变量? [英] How to get application scope variable in jsf?

问题描述

我已使用以下代码在ServletContext侦听器中初始化了一个变量:

I've intialized a variable in ServletContext listener using the following code:

sce.getServletContext().setAttribute("foo", "someValue");

因此，我现在可以使用以下代码获取值:

So, I can now get the value using following code:

FacesContext.getCurrentInstance().getExternalContext().getApplicationMap().get("foo");

现在，我想在不是FacesContext或控制器的其他某些类中访问此值.我该怎么办?

Now, I want to access this value in some other class that is not a FacesContext, or is not a controller. How can I do that?

推荐答案

如果另一个类不在FacesContext或ServletContext中运行，则根本无法运行.

If the other class is not running in FacesContext or ServletContext, then you simply can't.

只需将其作为构造函数或方法参数传递.

Just pass it as constructor or method argument.

otherClass.doSomething(foo);

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