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一段验证schema程序  可是验证xml import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import org.w3c.dom.Document; import org.xml.sax.ErrorHandler; import org.xml.sax.SAXNotRecognizedException; import org.xml.sax.SAXNotSupportedException; import org.xml.sax.SAXParseException; /* * Created on 2005-3-2 * * TODO To change the template for this generated file go to * Window - Preferences - Java - Code Style - Code Templates */ /** * @author YuJieHua * * TODO To change the template for this generated type comment go to * Window - Preferences - Java - Code Style - Code Templates */ public class XSDTest implements ErrorHandler {  public static void main(String[] args)  {   String xmlTestPath = "f:\\eclipse\\workspace\\test.xml";   DocumentBuilderFactory docBuilderFactory = null;   DocumentBuilder docBuilder = null;   org.apache.xerces.parsers.DOMParser parsers =    new org.apache.xerces.parsers.DOMParser();             try {           parsers.setFeature("http://xml.org/sax/features/validation",true);          } catch (SAXNotRecognizedException e) {             System.out.print("Unrecognized feature: ");               System.out.println("http://xml.org/sax/features/validation");            } catch (SAXNotSupportedException e) {               System.out.print("Unrecognized feature: ");               System.out.println("http://xml.org/sax/features/validation");          }     try   {    docBuilderFactory = DocumentBuilderFactory.newInstance();    docBuilderFactory.setValidating(true);    docBuilderFactory.setIgnoringElementContentWhitespace(true);    docBuilderFactory.setCoalescing(true);    docBuilderFactory.setIgnoringComments(true);    docBuilderFactory.setExpandEntityReferences(true);    docBuilderFactory.setNamespaceAware(false);//false);//true);    docBuilder = docBuilderFactory.newDocumentBuilder();    docBuilder.setErrorHandler(new XSDTest());    Document doc = docBuilder.parse(xmlTestPath);   }   catch(Exception se)   {    se.printStackTrace();   }  }    public void error(SAXParseException se)  {   System.out.println("Caught an error:" + se.getMessage());   //se.printStackTrace();  }    public void fatalError(SAXParseException se)  {   System.out.println("Caught an fatal error.");   se.printStackTrace();  }    public void warning(SAXParseException se)  {   System.out.println("Caught a warning.");   se.printStackTrace();  } } 出错为：Caught an error:Document root element "Patents", must match DOCTYPE root "null". Caught an error:Document is invalid: no grammar found. 我使用的xml与xsd文件是利用xmlspy生成的 无论什么样都出错！ 急问！！！！！    收藏   分享   顶(0)    关闭广告显示

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应该这样写： parser.setFeature("http://xml.org/sax/features/validation", true); parser.setFeature("http://apache.org/xml/features/validation/schema",true); 你漏了后面一句。 后面一句的写法应该和解析器有关吧，我用xerces测试是通过的，如果还是不行的话，你就查一下你使用的解析器提供的Feature，应该有一个是用来启动schema处理的，你只启动了校验，没有启动schema处理，当然会出错了 这个问题放了好几天了，我天天来看，我也想知道阿，为什么没人回答呢？虽然很简单 不要紧，我自己查资料，测试，搞了几天，我搞懂了，我来告诉你，说真的，这里学习气氛不浓哦！ 呼吁互相帮助！！！！！！