Module java.xml does not "opens com.sun.org.apache.xerces.internal.jaxp.datatype" to unnamed module.
Solution
Registering XMLGregorianCalendarAdapter as TypeHierarchyAdapter for XMLGregorianCalendar class
Symptoms
The following exceptions appeared before the fix:
(gson:2.8.9 — default) — java.lang.reflect.InaccessibleObjectException: Unable to make public com.sun.org.apache.xerces.internal.jaxp.datatype.XMLGregorianCalendarImpl() accessible: module java.xml does not "exports com.sun.org.apache.xerces.internal.jaxp.datatype" to unnamed module
(gson:2.9.0 — explicitly added dependency) — com.google.gson.JsonIOException: Failed making field 'com.sun.org.apache.xerces.internal.jaxp.datatype.XMLGregorianCalendarImpl#eon' accessible; either change its visibility or write a custom TypeAdapter for its declaring type
(gson:2.9.0 — explicitly added dependency) — java.lang.reflect.InaccessibleObjectException: Unable to make field private java.math.BigInteger com.sun.org.apache.xerces.internal.jaxp.datatype.XMLGregorianCalendarImpl.eon accessible: module java.xml does not "opens com.sun.org.apache.xerces.internal.jaxp.datatype" to unnamed module
Additional Info
No adding dependency for javax.xml.bind:jaxb-api and com.sun.xml.bind:jaxb-impl required to fix the mentioned problems.
Original cause
Module java.xml does not "opens com.sun.org.apache.xerces.internal.jaxp.datatype" to unnamed module.
Solution
Registering
XMLGregorianCalendarAdapteras TypeHierarchyAdapter forXMLGregorianCalendarclassSymptoms
The following exceptions appeared before the fix:
java.lang.reflect.InaccessibleObjectException: Unable to make public com.sun.org.apache.xerces.internal.jaxp.datatype.XMLGregorianCalendarImpl() accessible: module java.xml does not "exports com.sun.org.apache.xerces.internal.jaxp.datatype" to unnamed modulecom.google.gson.JsonIOException: Failed making field 'com.sun.org.apache.xerces.internal.jaxp.datatype.XMLGregorianCalendarImpl#eon' accessible; either change its visibility or write a custom TypeAdapter for its declaring typejava.lang.reflect.InaccessibleObjectException: Unable to make field private java.math.BigInteger com.sun.org.apache.xerces.internal.jaxp.datatype.XMLGregorianCalendarImpl.eon accessible: module java.xml does not "opens com.sun.org.apache.xerces.internal.jaxp.datatype" to unnamed moduleAdditional Info
No adding dependency for
javax.xml.bind:jaxb-apiandcom.sun.xml.bind:jaxb-implrequired to fix the mentioned problems.