UnknownHostException while validating xml/dtd files
Issue
Deploying a webapp with (for example) an xml descriptor file:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE facelet-taglib PUBLIC "-//Sun MicroSystems, Inc//DTD Facelet Taglib 1.0//EN" "http://java.sun.com/dtd/facelet-taglib_1_0.dtd">
<facelet-taglib> ..... </facelet-taglib>
Throws this error:
SEVERE [facelets.viewhandler] (http-0.0.0.0-80-1) Error Loading Library: /WEB-INF/facelets/ABC.taglib.xml
java.net.UnknownHostException: java.sun.com
Environment
Java configuration
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