我有一些代码：
XMLInputFactory xif = XMLInputFactory.newInstance()
TransformerFactory tf = TransformerFactory.newInstance("org.apache.xalan.processor.TransformerFactoryImpl",null)
Transformer t = tf.newTransformer()
DOMResult result = new DOMResult()
t.transform(new StAXSource(reader),result)
这会产生以下错误：
Caught: javax.xml.transform.TransformerException: Can’t transform a Source of type javax.xml.transform.stax.StAXSource
reader对象的类型为com.sun.org.apache.xerces.internal.impl.XMLStreamReaderImpl
