How to get Request Parameters in your JSP

I think, you know the problem: You have a link to a portlet site that expects a request parameter.
Example: http://localhost:8080/web/guest/page?customer=JohnDoe

How do you get the customer name in your JSP ? Just use this: 

PortalUtil.getOriginalServletRequest(request).getParameter("customer" )

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If you have any questions, feel free to leave a comment.