解析XML文件出现的问题
public void Build()throws SAXException,IOException,ParserConfigurationException{
//创建解析器
DocumentBuilder parser = DocumentBuilderFactory.newInstance().newDocumentBuilder();
//创建SchemaFactory
SchemaFactory factory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
XMLConstants.W3C_XML_SCHEMA_NS_URI这句报错,内容如下:
Exception in thread "AWT-EventQueue-0" java.lang.Error: Unresolved compilation problem:
XMLConstants.W3C_XML_SCHEMA_NS_URI cannot be resolved
这是怎么回事