[OmniFaces utilities 2.0] Return true if the given HTTP servlet request is a JSF ajax request

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[OmniFaces utilities] The isFacesAjaxRequest() method returns true if the given HTTP servlet request is a JSF ajax request. This does exactly the same as Faces#isAjaxRequest(), but then without the need for a FacesContext. The major advantage is that you can perform the job inside a servlet filter, where the FacesContext is normally not available.

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Method:

Usage:

·         inside a servlet filter or even a plain vanilla servlet (basically, when FacesContext is not available):

import org.omnifaces.util.Servlets;

...

@WebServlet("/MyServlet")

public class MyServlet extends HttpServlet {

 protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

  // e.g. false

  boolean isFacesAjaxRequest = Servlets.isFacesAjaxRequest(request);

 }

 ...

}

·         in JSF, when FacesContext is available use, Faces#isAjaxRequest(), or more clumsy (not recommended):

import org.omnifaces.util.Servlets;

...

// or simply use, Faces#getRequest()

FacesContext context = FacesContext.getCurrentInstance();

ExternalContext externalContext = context.getExternalContext();

HttpServletRequest request = (HttpServletRequest) externalContext.getRequest();

boolean isFacesAjaxRequest = Servlets.isFacesAjaxRequest(request);

API GH