I create a Web Service example according to this education material
http://www.myeclipseide.com/documentation/quickstarts/webservices/
But It occurs following exception when I get WSDL
javax.xml.transform.TransformerFactoryConfigurationError: Provider org.apache.xalan.processor.TransformerFactoryImpl not found
javax.xml.transform.TransformerFactory.newInstance(Unknown Source)
org.codehaus.xfire.wsdl11.builder.SchemaSerializer.writeXml(SchemaSerializer.java:46)
org.codehaus.xfire.wsdl11.builder.SchemaSerializer.marshall(SchemaSerializer.java:35)
com.ibm.wsdl.xml.WSDLWriterImpl.printExtensibilityElements(Unknown Source)
com.ibm.wsdl.xml.WSDLWriterImpl.printTypes(Unknown Source)
com.ibm.wsdl.xml.WSDLWriterImpl.printDefinition(Unknown Source)
com.ibm.wsdl.xml.WSDLWriterImpl.writeWSDL(Unknown Source)
com.ibm.wsdl.xml.WSDLWriterImpl.writeWSDL(Unknown Source)
org.codehaus.xfire.wsdl11.builder.WSDLBuilder.write(WSDLBuilder.java:182)
org.codehaus.xfire.wsdl11.builder.WSDLBuilderAdapter.write(WSDLBuilderAdapter.java:40)
org.codehaus.xfire.DefaultXFire.generateWSDL(DefaultXFire.java:104)
org.codehaus.xfire.transport.http.XFireServletController.generateWSDL(XFireServletController.java:380)
org.codehaus.xfire.transport.http.XFireServletController.doService(XFireServletController.java:125)
org.codehaus.xfire.transport.http.XFireServlet.doGet(XFireServlet.java:107)
javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
I use JDK 1.6 , J2EE 1.4 and MyEclipse 6.0.1 , Tomcat 5.0.28
How do I solve the problem?