How to redirect url from index.gsp?

   In the newly version of Grails,the index page is index.gsp but not index.jsp.you can't change the file name directly,it doesn't work.I think an alternative method is writen an TagLib.for example:

1,create a taglib file under  grails-app/taglib

TestTaglib

2,define a new tag

def redirectPage={ attrs->

  def url=attrs.get('url')

   response.sendRedirect("${request.contextPath}"+url)

}

3.in the index.gsp,writen like this: