如何从Vaadin 14应用程序中访问`ServletContext`? [英] How to access `ServletContext` from within a Vaadin 14 app?
问题描述
我问的是与问题相同的问题， 如何从Vaadin 7应用程序中访问ServletContext? ，但针对Vaadin 14.
I am asking the same as the Question, How to access ServletContext from within a Vaadin 7 app?, but for Vaadin 14.
在Vaadin 7中，Vaadin提供了简单方便的呼叫:
In Vaadin 7, Vaadin provided the simple and handy call:
ServletContext servletContext = VaadinServlet.getCurrent().getServletContext();
该特定调用不再存在于 VaadinServlet 在Vaadin 14中.
That particular call is no longer there on VaadinServlet in Vaadin 14.
➥Vaadin API中的其他地方是否有等效项?
➥ Is there an equivalent somewhere else in the Vaadin API?
我的最终目标是使用键值属性"集合来保留对我的应用范围内对象的引用.
My end goal is to use the key-value "attribute" collection to keep references to my app-wide objects.
推荐答案
方法仍然存在，但未记录
两种方法:
Methods still there, but not documented
Both methods:
-
VaadinServlet.getCurrent()➙VaadinServlet -
VaadinServlet::getServletContext()➙javax.servlet.ServletContext
...在Vaadin 14中仍然存在.
…are there still in Vaadin 14.
似乎第二个方法VaadinServlet::getServletContext()未在Javadocs中列出，因为它是从
It seems the second method, VaadinServlet::getServletContext(), isn't listed in the Javadocs because it's inherited from javax.servlet.GenericServlet and the Javadoc generation is run in a way that doesn't have access to that class.
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