We're in the process of upgrading our application to Spring 6 and Java 17 from Java 11 and Spring 5. As part of this migration, we've come across a property set:
System.setProperty("javax.xml.transform.TransformerFactory","com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactoryImpl");
Despite migrating our SOAP interfaces successfully, we're unsure about the necessity of this property.
How to migrate to Jakarta?
Since the class javax.xml.transform.TransformerFactory is still in the java.xml JDK17 module and still referenced in the jaxb-ri 4.x (under jakarta packages), I'd suggest not to change anything.
Same thing for com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactoryImpl which is still under jdk17.