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Changing XPage Content-Type via Query String Parameter

07/13/2010 01:23:00 PM by Chris Toohey

IBM Lotus Notes Domino XPages Here's a simple trick that you can use to conditionally set the rendered Content-Type of a given XPage via Query String Parameter. By default, XPages render as text/html. With this simple change to your XPage Source, well, you'll be able to change that to text/plain or something like application/ms-excel!

Simply add the following to your XPage via the Source Panel:


<xp:this.afterRenderResponse>

    <![CDATA[#{javascript:var ct = context.getUrlParameter("content-type");

     if (ct == "") {

        var ct = "text/html";

    }

    facesContext.getExternalContext().getResponse().setContentType(ct)}]]>

</xp:this.afterRenderResponse>

With this afterRenderResponse XPage attribute added, you can now control the rendered Content-Type via a URL Query String Parameter.

text.xsp

IBM Lotus Notes Domino XPage rendered as 'text/html' Content-Type

text.xsp?content-type=text/plain

IBM Lotus Notes Domino XPage rendered as 'text/plain' Content-Type

Of course, this still loads all of the Theme-generated content and Dojo libraries. To stop that, you'll want to use a non-rendered XPage like I do in my One-click Microsoft Excel (or Symphony Spreadsheets) via XPages and SSJS example.

About the author: Chris Toohey

Thought Leadership, Web & Mobile Application Development, Solutions Integration, Technical Writing & Mentoring

A published developer and webmaster of dominoGuru.com, Chris Toohey specializes in platform application development, solutions integration, and evangelism of platform capabilities and best practices.