Seam 2, how to get the servletcontext?

I'm in seam 2. How can I get the servlet context?

I can do this: ServletContexts servletContexts = ServletContexts开发者_JAVA百科.getInstance();

But this is not the ServletContext.

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Depending at what moment you are trying to get the ServletContext:

• During a HttpServletRequest request: ServletContexts.instance().getRequest().getServletContext().

• During JSF request: (ServletContext)FacesContext.getCurrentInstance().getExternalContext().

• During application startup: ServletLifecycle.getServletContext().