pankajjangid05
commented
1 year ago This is because Marshaller and Unmarshaller are not thread-safe. So when we send the notification using reactive and reactive create multiple threads to convert XMessage to XML and currently, we are creating one object of marshaller. So I think threads are changing the value or stack empty that's why we are getting these exceptions.
Solution : JAXBContext - is thread-safe and can (and must) be a singleton. Creation is an expensive operation.
Marshaller and Unmarshaller are not thread safe! You must create them every time. Creation is not expensive and takes almost no time (less than 1 millisecond).
Need to discuss with Karan & Chakshu on it.
chinmoy12c
karntrehan
ChakshuGautam
We are converting the XMessage object data to XML using these dependencies javax.xml.bind.JAXBContext, Marshaller, and Unmarshaller for conversions we are getting multiple exceptions while sending the notification.
Getting Below Exceptions :
java.lang.ArrayIndexOutOfBoundsException: Index -1 out of bounds for length 16 at com.sun.xml.bind.v2.util.CollisionCheckStack.pushNocheck(CollisionCheckStack.java:102) at com.sun.xml.bind.v2.runtime.XMLSerializer.childAsRoot(XMLSerializer.java:457) at com.sun.xml.bind.v2.runtime.MarshallerImpl.write(MarshallerImpl.java:298) at com.sun.xml.bind.v2.runtime.MarshallerImpl.marshal(MarshallerImpl.java:226) at javax.xml.bind.helpers.AbstractMarshallerImpl.marshal(AbstractMarshallerImpl.java:101) at messagerosa.core.model.XMessage.toXML(XMessage.java:118)
java.lang.NullPointerException at com.sun.xml.bind.v2.runtime.output.NamespaceContextImpl$Element.startElement(NamespaceContextImpl.java:466) at com.sun.xml.bind.v2.runtime.XMLSerializer.endNamespaceDecls(XMLSerializer.java:258) at com.sun.xml.bind.v2.runtime.XMLSerializer.childAsXsiType(XMLSerializer.java:653) at com.sun.xml.bind.v2.runtime.property.SingleElementNodeProperty.serializeBody(SingleElementNodeProperty.java:128) at com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.serializeBody(ClassBeanInfoImpl.java:329) at com.sun.xml.bind.v2.runtime.XMLSerializer.childAsSoleContent(XMLSerializer.java:563) at com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.serializeRoot(ClassBeanInfoImpl.java:310) at com.sun.xml.bind.v2.runtime.XMLSerializer.childAsRoot(XMLSerializer.java:464) at com.sun.xml.bind.v2.runtime.MarshallerImpl.write(MarshallerImpl.java:298) at com.sun.xml.bind.v2.runtime.MarshallerImpl.marshal(MarshallerImpl.java:226) at javax.xml.bind.helpers.AbstractMarshallerImpl.marshal(AbstractMarshallerImpl.java:101) at messagerosa.core.model.XMessage.toXML(XMessage.java:118)
java.util.EmptyStackException at java.base/java.util.Stack.peek(Stack.java:102) at java.base/java.util.Stack.pop(Stack.java:84) at com.sun.xml.bind.marshaller.DataWriter.endElement(DataWriter.java:252) at com.sun.xml.bind.v2.runtime.output.SAXOutput.endTag(SAXOutput.java:102) at com.sun.xml.bind.v2.runtime.output.NamespaceContextImpl$Element.endElement(NamespaceContextImpl.java:477) at com.sun.xml.bind.v2.runtime.XMLSerializer.endElement(XMLSerializer.java:285) at com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.serializeRoot(ClassBeanInfoImpl.java:311) at com.sun.xml.bind.v2.runtime.XMLSerializer.childAsRoot(XMLSerializer.java:464) at com.sun.xml.bind.v2.runtime.MarshallerImpl.write(MarshallerImpl.java:298) at com.sun.xml.bind.v2.runtime.MarshallerImpl.marshal(MarshallerImpl.java:226) at javax.xml.bind.helpers.AbstractMarshallerImpl.marshal(AbstractMarshallerImpl.java:101) at messagerosa.core.model.XMessage.toXML(XMessage.java:118)