java解析xml文件失败,java – 解析xml文件时的未知主机异常

当我试图解析一个xml时,我得到以下异常： –

java.net.UnknownHostException: hibernate.sourceforge.net

at java.net.AbstractPlainSocketImpl.connect(Unknown Source)

at java.net.PlainSocketImpl.connect(Unknown Source)

at java.net.Socket.connect(Unknown Source)

at java.net.Socket.connect(Unknown Source)

at sun.net.NetworkClient.doConnect(Unknown Source)

at sun.net.www.http.HttpClient.openServer(Unknown Source)

at sun.net.www.http.HttpClient.openServer(Unknown Source)

at sun.net.www.http.HttpClient.(Unknown Source)

at sun.net.www.http.HttpClient.New(Unknown Source)

at sun.net.www.http.HttpClient.New(Unknown Source)

at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)

at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)

at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)

at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)

at org.apache.xerces.impl.XMLEntityManager.setupCurrentEntity(Unknown Source)

at org.apache.xerces.impl.XMLEntityManager.startEntity(Unknown Source)

at org.apache.xerces.impl.XMLEntityManager.startDTDEntity(Unknown Source)

at org.apache.xerces.impl.XMLDTDScannerImpl.setInputSource(Unknown Source)

at org.apache.xerces.impl.XMLDocumentScannerImpl$DTDDispatcher.dispatch(Unknown Source)

at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)

at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)

at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)

at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)

at org.apache.xerces.parsers.DOMParser.parse(Unknown Source)

at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source)

at javax.xml.parsers.DocumentBuilder.parse(Unknown Source)

我用来解析xml的代码如下： –

File hbmFile = new File(hbmFileName);

DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();

DocumentBuilder db = dbf.newDocumentBuilder();

Document doc = db.parse(hbmFile);

我试图解析为hibernate编写的xml,实际上它是一个hibernate映射文件.

我想解析的xml如下： –

/p>

"-//Hibernate/Hibernate Mapping DTD 3.0//EN"

"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

请帮忙.