[Fatal Error] books.xml:1:1: Premature end of file.

org.xml.sax.SAXParseException: Premature end of file.

at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:239)

at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:283)

at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:180)

at com.imooc.dmtest.test.DOMTest.main(DOMTest.java:27)