dom4j解析xml文件时忽略DOCTYPE标签

利用dom4j读取xml配置文件时，如果文件中出现DOCTYPE标签，可能会在read时读取异常：

 Document document = reader.read(file);

导致文件读取失败，如下：

Exception in thread "main" org.dom4j.DocumentException: Error on line 1 of document http://testng.org/testng-1.0.dtd : 文档类型声明包含或指向的标记声明必须格式正确。 Nested exception: 文档类型声明包含或指向的标记声明必须格式正确。
	at org.dom4j.io.SAXReader.read(SAXReader.java:482)
	at org.dom4j.io.SAXReader.read(SAXReader.java:264)
	at com.sinosoft.listest.service.impl.ProduceXmlImpl.updateAllTestngXml(ProduceXmlImpl.java:32)
	at com.sinosoft.listest.service.ProduceXml.updateAllTestngXml(ProduceXml.java:16)
	at com.sinosoft.listest.utils.PrepareDateUtil.updateAllTestngXml(PrepareDateUtil.java:38)
	at com.sinosoft.listest.Test.main(Test.java:12)
Nested exception: 
org.xml.sax.SAXParseException; systemId: http://testng.org/testng-1.0.dtd; lineNumber: 1; columnNumber: 3; 文档类型声明包含或指向的标记声明必须格式正确。
	at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:203)
	at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(ErrorHandlerWrapper.java:177)
	at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:441)
	at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:368)
	at com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(XMLScanner.java:1436)
	at com.sun.org.apache.xerces.internal.impl.XMLDTDScannerImpl.scanDecls(XMLDTDScannerImpl.java:2002)
	at com.sun.org.apache.xerces.internal.impl.XMLDTDScannerImpl.scanDTDExternalSubset(XMLDTDScannerImpl.java:305)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.dispatch(XMLDocumentScannerImpl.java:1177)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.next(XMLDocumentScannerImpl.java:1050)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:964)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:606)
	at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:117)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:848)
	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777)
	at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
	at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)
	at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:649)
	at org.dom4j.io.SAXReader.read(SAXReader.java:465)
	at org.dom4j.io.SAXReader.read(SAXReader.java:264)
	at com.sinosoft.listest.service.impl.ProduceXmlImpl.updateAllTestngXml(ProduceXmlImpl.java:32)
	at com.sinosoft.listest.service.ProduceXml.updateAllTestngXml(ProduceXml.java:16)
	at com.sinosoft.listest.utils.PrepareDateUtil.updateAllTestngXml(PrepareDateUtil.java:38)
	at com.sinosoft.listest.Test.main(Test.java:12)

Process finished with exit code 1

 

特别是testng.xml时，如果不添加则无法正常运行程序。

百度实验了各种解决方案都无法解决，最后终于找到了一种适用的忽略dtd文件的方法（查询的另外几种统统未解决），贴上解决的代码以供参考：

//获得文件
        File file = new File(filePath);
        //利用dom4j读取xml
        SAXReader reader = new SAXReader();
        //忽略dtd文件校验！！！
        reader.setValidation(false);
        reader.setEntityResolver(new EntityResolver() {
            @Override
            public InputSource resolveEntity(String publicId, String systemId) throws SAXException, IOException {
                return new InputSource(new ByteArrayInputStream("".getBytes()));
            }
        });

完美解决，以供参考谢谢。