Validator tài liệu XML
Kiểm tra tính hợp lệ của file XML Dùng DOM
| package validationex;
import javax.xml.XMLConstants; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.transform.Source; import javax.xml.transform.dom.DOMSource; import javax.xml.transform.stream.StreamSource; import javax.xml.validation.Schema; import javax.xml.validation.SchemaFactory; import javax.xml.validation.Validator; import org.w3c.dom.Document; public class DOMValidator { public static void main (String[] args) { String xmlfile = “files/tomcatusers.xml”; String xsdfile = “files/tomcatusers.xsd”; try{ DocumentBuilder parser = DocumentBuilderFactory.newInstance ().newDocumentBuilder (); Document doc = parser.parse (xmlfile); SchemaFactory factory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI); Source schemaFile = new StreamSource(xsdfile); Schema schema = factory.newSchema (schemaFile); Validator validator = schema.newValidator (); validator.validate (new DOMSource(doc)); System.out.println(xmlfile + ” document is valid!”); }catch(Exception e){ System.out.println(xmlfile + ” document is NOT valid!”); System.out.println(e.getMessage()); } } } |
Kiểm tra tính hợp lệ của file XML dung SAX
| package validationex;
import java.io.File; import javax.xml.XMLConstants; import javax.xml.transform.Source; import javax.xml.transform.sax.SAXSource; import javax.xml.transform.stream.StreamSource; import javax.xml.validation.Schema; import javax.xml.validation.SchemaFactory; import javax.xml.validation.Validator; import org.xml.sax.InputSource; public class SAXValidator { public static void main (String[] args) { String xmlfile = “files/tomcatusers.xml”; String xsdfile = “files/tomcatusers.xsd”; try{ InputSource is = new InputSource(xmlfile); SchemaFactory factory = SchemaFactory.newInstance (XMLConstants.W3C_XML_SCHEMA_NS_URI); Source schemaFile = new StreamSource(new File(xsdfile)); Schema schema = factory.newSchema (schemaFile); Validator validator = schema.newValidator (); validator.validate (new SAXSource(is)); System.out.println(xmlfile + ” document is valid!!!!”); }catch(Exception e){ System.out.println(xmlfile + ” document is NOT valid!”); System.out.println(e.getMessage()); } } } |
Với file source: tomcatusers.xsd
| <?xml version=”1.0″ encoding=”utf-8″?>
<xs:schema attributeFormDefault=”unqualified” elementFormDefault=”qualified” xmlns:xs=”http://www.w3.org/2001/XMLSchema”> <xs:element name=”tomcat-users”> <xs:complexType> <xs:sequence> <xs:element maxOccurs=”unbounded” name=”role”> <xs:complexType> <xs:attribute name=”rolename” type=”xs:string” use=”required” /> </xs:complexType> </xs:element> <xs:element maxOccurs=”unbounded” name=”user”> <xs:complexType> <xs:attribute name=”username” type=”xs:string” use=”required” /> <xs:attribute name=”password” type=”xs:string” use=”required” /> <xs:attribute name=”roles” type=”xs:string” use=”required” /> </xs:complexType> </xs:element> </xs:sequence> </xs:complexType> </xs:element> </xs:schema> |
File tomcatusers.xml
| <?xml version=“1.0″ encoding=“utf-8″ standalone=“no”?>
<tomcat-users> <role rolename=“tomcat”/> <role rolename=“role1″/> <role rolename=“manager”/> <role rolename=“admin”/> <user password=“tomcat” roles=“tomcat” username=“tomcat”/> <user password=“tomcat” roles=“tomcat,role1″ username=“both”/> <user password=“tomcat” roles=“role1″ username=“role1″/> <user password=“” roles=“admin,manager” username=“admin”/> <user password=“s” roles=“admin,manager” username=“teo”/> </tomcat-users> |
