Hello, I was about to write an equivalent message to the community for the same error. In my case, I'm updating from GeoServer 2.10.0 to 2.25.0. I had many issues that I was able to manage by myself. But the last issue (I hope) I see now is for any layer I want to preview, or access to show, I get also a service exception "java.lang.reflect.UndeclaredThrowableExceptionorg.xml.sax.SAXException: Entity resolution disallowed for null".
I'm really interested to have also some support on this point. Many thanks. Jean-Christophe De : Calliess Daniel Ing. <daniel.calli...@stadt-salzburg.at> Envoyé : lundi 22 avril 2024 15:00 À : 'geoserver-users' <geoserver-users@lists.sourceforge.net> Objet : [Geoserver-users] WMS broken after GeoServer Update (SAXException) Hi, I updated my GeoServer (Tomcat 9/Windows Server) from 2.24.2 to 2.25.0 and now I can't preview WMS layers. The error message is: "java.lang.reflect.UndeclaredThrowableExceptionorg.xml.sax.SAXException: Entity resolution disallowed for null". The same message is shown when I try to validate an SLD stylesheet. I copied the full stack trace to a file and attached it to this message. I also reverted back to the data dir included in the 2.25.0 release and can reproduce the error f.e. with the 'point' style. I now found out that when I'm starting GeoServer with the -DENTITY_RESOLUTION_ALLOWLIST=* parameter, the error is gone. Although this parameter shouldn't be necessary because the styles are only containing references to www.opengis.net<http://www.opengis.net> and www.w3.org<http://www.w3.org> which are in the default list of allowed domains for entity expansion according to the documentation<https://docs.geoserver.org/latest/en/user/production/config.html#production-config-external-entities>. The geoserver log shows a lot of "WARN [geotools.xsd] - Sax parser property 'http://www.oracle.com/xml/jaxp/properties/entityExpansionLimit' not recognized. Xerces version is incompatible." messages. Might there be a connection to the above issue? Am I doing something wrong? Thank you and best regards Daniel
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