JAXB解组：零星空指针异常

Question

我一直试图解组一个XML，该XML定期成功，但偶尔会出现Null Pointer Exception失败。异常跟踪如下：

SQL Server

任何人都可以帮助您了解在什么情况下会发生此异常吗？

Java版本：OpenJDK 1.8u151

XML：

java.lang.NullPointerException
            at com.sun.xml.bind.v2.runtime.Coordinator.pushCoordinator(Coordinator.java:149)
            at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext.endElement(UnmarshallingContext.java:501)
            at com.sun.xml.bind.v2.runtime.unmarshaller.InterningXmlVisitor.endElement(InterningXmlVisitor.java:77)
            at com.sun.xml.bind.v2.runtime.unmarshaller.SAXConnector.endElement(SAXConnector.java:156)
            at com.sun.xml.bind.unmarshaller.DOMScanner.visit(DOMScanner.java:250)
            at com.sun.xml.bind.unmarshaller.DOMScanner.visit(DOMScanner.java:276)
            at com.sun.xml.bind.unmarshaller.DOMScanner.visit(DOMScanner.java:245)
            at com.sun.xml.bind.unmarshaller.DOMScanner.scan(DOMScanner.java:122)
            at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:314)
            at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:297)