Taglib in JSP not running

Question

I am using netBeans and glassFish Server 4.1.1

<%@ taglib uri="index.html" prefix="mytag" %>  
<html>  
<body> 
    
<mytag:currentDate/>  
  
</body>  
</html>

And I got error like this:

org.xml.sax.SAXParseException; lineNumber: 12; columnNumber: 7; The element type "meta" must be terminated by the matching end-tag "". at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:203) at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(ErrorHandlerWrapper.java:177) at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:400) at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:327) at com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(XMLScanner.java:1438) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1750) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2970) at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:606) at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:118) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:848) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777) at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141) at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:243) at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:339) at org.apache.jasper.xmlparser.ParserUtils.parseXMLDocument(ParserUtils.java:298) at org.apache.jasper.xmlparser.ParserUtils.parseXMLDocument(ParserUtils.java:351) at org.apache.jasper.compiler.TagLibraryInfoImpl.parseTLD(TagLibraryInfoImpl.java:340) at org.apache.jasper.compiler.TagLibraryInfoImpl.(TagLibraryInfoImpl.java:254) at org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:502) at org.apache.jasper.compiler.Parser.parseDirective(Parser.java:582) at org.apache.jasper.compiler.Parser.parseElements(Parser.java:1657) at org.apache.jasper.compiler.Parser.parse(Parser.java:185) at org.apache.jasper.compiler.ParserController.doParse(ParserController.java:244) at org.apache.jasper.compiler.ParserController.parse(ParserController.java:145) at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:212) at org.apache.jasper.compiler.Compiler.compile(Compiler.java:451) at org.apache.jasper.JspC.processFile(JspC.java:1171) at org.apache.jasper.JspC.execute(JspC.java:1338) at org.netbeans.modules.web.project.ant.JspC.main(JspC.java:101) at org.netbeans.modules.web.project.ant.JspCSingle.main(JspCSingle.java:119) org.apache.jasper.JasperException: file:C:/Users/Queue/OneDrive/JspExE/build/web/WEB-INF/tlb.jsp(1,44) PWC6178: XML parsing error on file /WEB-INF/index.html: (line 12, col 7) org.apache.jasper.JasperException: C:/Users/Queue/OneDrive/JspExE/build/web/WEB-INF/tlb.jsp(1,44) org.apache.jasper.JasperException: file:C:/Users/Queue/OneDrive/JspExE/build/web/WEB-INF/tlb.jsp(1,44) PWC6178: XML parsing error on file C:\Users\Queue\OneDrive\JspExE\nbproject\build-impl.xml:936: Java returned: 1 BUILD FAILED (total time: 1 second)

Roman C Roman C · Accepted Answer · 2016-12-22T00:19:02

The file index.html is a html file. You can't use HTML instead of TLD in the URI attribute of taglib directive.

From the java tutorial:

The uri attribute refers to a URI that uniquely identifies the tag library descriptor (TLD), a document that describes the tag library (see Tag Library Descriptors).

Tag library descriptor file names must have the extension .tld. TLD files are stored in the WEB-INF directory or subdirectory of the WAR file, or in the META-INF directory or subdirectory of a tag library packaged in a JAR. You can reference a TLD directly or indirectly.

The following taglib directive directly references a TLD file name:
<%@ taglib prefix="tlt" uri="/WEB-INF/iterator.tld"%>
This taglib directive uses a short logical name to indirectly reference the TLD:
<%@ taglib prefix="tlt" uri="/tlt"%>
Nested inside a jsp-config element is a taglib element, which provides information on a tag library used by the pages of the application. Inside the taglib element are the taglib-uri element and the taglib-location element. The taglib-uri element identifies the logical name of the tag library. The taglib-location element gives the absolute location or the absolute URI of the tag library.

The absolute URIs for the JSTL library are as follows:
Core: http://java.sun.com/jsp/jstl/core

XML: http://java.sun.com/jsp/jstl/xml

Internationalization: http://java.sun.com/jsp/jstl/fmt

SQL: http://java.sun.com/jsp/jstl/sql

Functions: http://java.sun.com/jsp/jstl/functions
When you reference a tag library with an absolute URI that exactly matches the URI declared in the taglib element of the TLD (see Tag Library Descriptors), you do not have to add the taglib element to web.xml; the JSP container automatically locates the TLD inside the JSTL library implementation. Including the Tag Library Implementation

In addition to declaring the tag library, you also must make the tag library implementation available to the web application. There are several ways to do this. Tag library implementations can be included in a WAR in an unpacked format: Tag files are packaged in the /WEB-INF/tag/ directory, and tag handler classes are packaged in the /WEB-INF/classes/ directory of the WAR. Tag libraries already packaged into a JAR file are included in the /WEB-INF/lib/ directory of the WAR. Finally, an application server can load a tag library into all the web applications running on the server. For example, in the Application Server, the JSTL TLDs and libraries are distributed in the archive appserv-jstl.jar in as-install/lib/. This library is automatically loaded into the classpath of all web applications running on the Application Server, so you don’t need to add it to your web application.

Taglib in JSP not running

1 Answers