i try to add a custom tag by facelets:(down example code from https://facelets.dev.java.net/servlets/ProjectDocumentList?folderID=3635&expandFolder=3635&folderID=0)
JsfCoreLibrary.java: package com.arcmind.jsfquickstart.tags; import com.sun.facelets.tag.AbstractTagLibrary; import java.lang.reflect.Method; import java.lang.reflect.Modifier; /** * JsfCoreLibrary is an example for IBM developerWorks (c). * @author Rick Hightower from ArcMind Inc. http://www.arc-mind.com */ public final class JsfCoreLibrary extends AbstractTagLibrary { /** Namespace used to import this library in Facelets pages */ public static final String NAMESPACE = "http://www.arc-mind.com/jsf/core";; /** Current instance of library. */ public static final JsfCoreLibrary INSTANCE = new JsfCoreLibrary(); /** * Creates a new JstlCoreLibrary object. * */ public JsfCoreLibrary() { super(NAMESPACE); this.addTagHandler("setValueBinding", SetValueBindingHandler.class); this.addTagHandler("isBoolean", IsBooleanHandler.class); this.addTagHandler("isText", IsTextHandler.class); this.addTagHandler("isDate", IsDateHandler.class); try { Method[] methods = JsfFunctions.class.getMethods(); for (int i = 0; i < methods.length; i++) { if (Modifier.isStatic(methods.getModifiers())) { this.addFunction(methods.getName(), methods); } } } catch (Exception e) { throw new RuntimeException(e); } } } jsf-core.taglib.xml: <?xml version="1.0"?> <!DOCTYPE facelet-taglib PUBLIC "-//Sun Microsystems, Inc.//DTD Facelet Taglib 1.0//EN" "facelet-taglib_1_0.dtd"> <facelet-taglib> <library-class> com.arcmind.jsfquickstart.tags.JsfCoreLibrary </library-class> </facelet-taglib> i get this result: Error Loading Library: /WEB-INF/facelets/tags/jsf-core.taglib.xml java.io.IOException: Error parsing [jndi:/localhost/seam-booking/WEB-INF/facelets/tags/jsf-core.taglib.xml]: at com.sun.facelets.compiler.TagLibraryConfig.create(TagLibraryConfig.java:396) at com.sun.facelets.FaceletViewHandler.initializeCompiler(FaceletViewHandler.java:310) at com.sun.facelets.FaceletViewHandler.initialize(FaceletViewHandler.java:196) at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:503) at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:352) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.jboss.seam.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:30) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112) at java.lang.Thread.run(Thread.java:595) Caused by: org.xml.sax.SAXException: Error Handling [jndi:/localhost/seam-booking/WEB-INF/facelets/tags/[EMAIL PROTECTED],23] <library-class> at com.sun.facelets.compiler.TagLibraryConfig$LibraryHandler.endElement(TagLibraryConfig.java:258) at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source) at org.apache.xerces.impl.dtd.XMLDTDValidator.endNamespaceScope(Unknown Source) at org.apache.xerces.impl.dtd.XMLDTDValidator.handleEndElement(Unknown Source) at org.apache.xerces.impl.dtd.XMLDTDValidator.endElement(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanEndElement(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XMLParser.parse(Unknown Source) at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source) at javax.xml.parsers.SAXParser.parse(Unknown Source) at javax.xml.parsers.SAXParser.parse(Unknown Source) at com.sun.facelets.compiler.TagLibraryConfig.create(TagLibraryConfig.java:393) ... 26 more Caused by: java.lang.Exception: com.arcmind.jsfquickstart.tags.JsfCoreLibrary must be an instance of com.sun.facelets.tag.TagLibrary at com.sun.facelets.compiler.TagLibraryConfig$LibraryHandler.createClass(TagLibraryConfig.java:280) at com.sun.facelets.compiler.TagLibraryConfig$LibraryHandler.processLibraryClass(TagLibraryConfig.java:326) at com.sun.facelets.compiler.TagLibraryConfig$LibraryHandler.endElement(TagLibraryConfig.java:166) ... 41 more 2006-08-24 10:58:10,109 ERROR [STDERR] 2006-8-24 10:58:10 com.sun.facelets.compiler.TagLibraryConfig loadImplicit thanks! 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