HTML Component issue: Failed to read schema document

Issue:

When uploading a report with HTML component to JasperReports Server repository and trying to run it you may sometimes get the exception below:

org.xml.sax.SAXParseException: schema_reference.4: Failed to read schema
document 'http://jasperreports.sourceforge.net/xsd/htmlcomponent.xsd
(http://jasperreports.sourceforge.net/xsd/htmlcomponent.xsd)', because 1)
could not find the document; 2) the document could not be read; 3) the
root element of the document is not .

Resolution:

This happens because HTML component lib is missing from the classpath. To fix the issue add the jasperreports-htmlcomponent-4.1.1.jar to <js-install>/WEB-INF/lib/ folder and restart the server. This library can be found in iReport Designer installation under /ireport/modules/ext/ folder.

Ref. Case #00025087 -- 13:46, 15 March 2012 (UTC)