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List: taglibs-user
Subject: Re: Unable to open taglibrary csajsp-taglib.tld : Parse Error in the tag
From: Pierre Delisle <pierre.delisle () sun ! com>
Date: 2000-11-24 14:04:52
[Download RAW message or body]
Terry,
You get this error because the "servlet" tag in your web.xml is not properly
positioned.
If using servlet 2.2, you must obey the following order:
[from the web.xml DTD]
<!ELEMENT web-app (icon?, display-name?, description?, distributable?,
context-param*, servlet*, servlet-mapping*, session-config?,
mime-mapping*, welcome-file-list?, error-page*, taglib*,
resource-ref*, security-constraint*, login-config?, security-role*,
env-entry*, ejb-ref*)>
This was "ignored" in older releases of tomcat.
-- Pierre
> Terry Hanks wrote:
>
> I am having trouble getting started with taglibs, and would appreciate any help if \
> someone has seen this problem before.
> I am trying to use the first taglib example from chapter 14 of the book \
> "Coreservelts and JSP" with Tomcat 3.1.
> I get the parse error shown below. The example that I am trying to use consists of \
> the following files in the following directories:
>
>
> SimpleExample.jsp in htdocs
>
> csajsp-taglib.tld in htdocs
>
> ExampleTag.class in htdocs/WEB-INF/classes/coreservlets/tags
>
>
>
> I list the following information below:
>
> - the error in the browser
>
> - source for SimpleExample.jsp
>
> - csajsp-taglib.tld in htdocs
>
> - ExampleTag.java
>
> Error: 500
>
> Location: /SimpleExample.jsp
>
> Internal Servlet Error:
>
> org.apache.jasper.JasperException: Unable to open taglibrary csajsp-taglib.tld : \
> Parse Error in the tag library descriptor: Element "web-app" does not allow \
> "servlet" here. at \
> org.apache.jasper.compiler.JspParseEventListener.handleDirective(JspParseEventListener.java:672)
> at org.apache.jasper.compiler.DelegatingListener.handleDirective(DelegatingListener.java:116)
> at org.apache.jasper.compiler.Parser$Directive.accept(Parser.java:215)
> at org.apache.jasper.compiler.Parser.parse(Parser.java:1073)
> at org.apache.jasper.compiler.Parser.parse(Parser.java:1038)
> at org.apache.jasper.compiler.Parser.parse(Parser.java:1034)
> at org.apache.jasper.compiler.Compiler.compile(Compiler.java:182)
> at org.apache.jasper.runtime.JspServlet.loadJSP(JspServlet.java:413)
> at org.apache.jasper.runtime.JspServlet$JspServletWrapper.loadIfNecessary(JspServlet.java:149)
> at org.apache.jasper.runtime.JspServlet$JspServletWrapper.service(JspServlet.java:161)
> at org.apache.jasper.runtime.JspServlet.serviceJspFile(JspServlet.java:261)
> at org.apache.jasper.runtime.JspServlet.service(JspServlet.java:369)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at org.apache.tomcat.core.ServletWrapper.handleRequest(ServletWrapper.java:503)
> at org.apache.tomcat.core.ContextManager.service(ContextManager.java:559)
> at org.apache.tomcat.service.connector.Ajp12ConnectionHandler.processConnection(Ajp12ConnectionHandler.java:167)
> at org.apache.tomcat.service.TcpConnectionThread.run(SimpleTcpEndpoint.java:338)
> at java.lang.Thread.run(Thread.java:484)
>
>
>
> Source for SimpleExample.jsp:
>
> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
>
> <!--
>
> Illustration of very simple JSP custom tag.
>
> Taken from Core Servlets and JavaServer Pages
>
> from Prentice Hall and Sun Microsystems Press,
>
> http://www.coreservlets.com/.
>
> © 2000 Marty Hall; may be freely used or adapted.
>
> -->
>
> <HTML>
>
> <HEAD>
>
> <%@ taglib uri="csajsp-taglib.tld" prefix="csajsp" %>
>
> <TITLE><csajsp:example /></TITLE>
>
> <LINK REL=STYLESHEET
>
> HREF="JSP-Styles.css"
>
> TYPE="text/css">
>
> </HEAD>
>
> <BODY>
>
> <H1><csajsp:example /></H1>
>
> <csajsp:example />
>
> </BODY>
>
> </HTML>
>
>
>
>
>
> csajsp-taglib.tld
>
> <?xml version="1.0" encoding="ISO-8859-1" ?>
>
> <!DOCTYPE taglib
>
> PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.1//EN"
>
> "http://java.sun.com/j2ee/dtds/web-jsptaglibrary_1_1.dtd">
>
> <!-- a tag library descriptor -->
>
> <taglib>
>
> <!-- after this the default space is
>
> "http://java.sun.com/j2ee/dtds/jsptaglibrary_1_2.dtd"
>
> -->
>
> <tlibversion>1.0</tlibversion>
>
> <jspversion>1.1</jspversion>
>
> <shortname>csajsp</shortname>
>
> <!-- ** CHANGED FROM "urn" TO "uri" IN TOMCAT 3.1 ** -->
>
> <uri></uri>
>
> <info>
>
> A tag library from Core Servlets and JavaServer Pages,
>
> http://www.coreservlets.com/.
>
> </info>
>
> <!--
>
> <tag>
>
> The name (after prefix) tag will have in JSP code
>
> <name>example</name>
>
> The actual class implementing tag. In
>
> Tomcat 3.1 beta, it MUST be in a package.
>
> <tagclass>coreservlets.tags.ExampleTag</tagclass>
>
> Descriptive information about tag.
>
> <info>Simplest example: inserts one line of output</info>
>
> One of three values describing what goes between
>
> start and end tag.
>
> empty: no body
>
> JSP: body that is evaluated by container normally,
>
> then possibly processed by tag
>
> tagdependent: body is only processed by tag;
>
> JSP in body is not evaluated.
>
> ** NOTE: TOMCAT 3.1 FINAL DOES NOT SUPPORT BODYCONTENT **
>
> ** THE BETA SUPPORTED IT, AND IT IS PART OF SPEC, BUT... **
>
> <bodycontent>empty</bodycontent>
>
> </tag>
>
> -->
>
> <tag>
>
> <name>example</name>
>
> <tagclass>coreservlets.tags.ExampleTag</tagclass>
>
> <info>Simplest example: inserts one line of output</info>
>
> <!-- TOMCAT 3.1 DOES NOT SUPPORT BODYCONTENT
>
> <bodycontent>empty</bodycontent> -->
>
> </tag>
>
> <tag>
>
> <name>simplePrime</name>
>
> <tagclass>coreservlets.tags.SimplePrimeTag</tagclass>
>
> <info>Outputs a random 50-digit prime.</info>
>
> <!-- TOMCAT 3.1 DOES NOT SUPPORT BODYCONTENT
>
> <bodycontent>empty</bodycontent> -->
>
> </tag>
>
> <tag>
>
> <name>prime</name>
>
> <tagclass>coreservlets.tags.PrimeTag</tagclass>
>
> <info>Outputs a random N-digit prime.</info>
>
> <!-- TOMCAT 3.1 DOES NOT SUPPORT BODYCONTENT
>
> <bodycontent>empty</bodycontent> -->
>
> <attribute>
>
> <name>length</name>
>
> <required>false</required>
>
> </attribute>
>
> </tag>
>
> <tag>
>
> <name>heading</name>
>
> <tagclass>coreservlets.tags.HeadingTag</tagclass>
>
> <info>Outputs a 1-cell table used as a heading.</info>
>
> <!-- TOMCAT 3.1 DOES NOT SUPPORT BODYCONTENT
>
> <bodycontent>JSP</bodycontent> -->
>
> <attribute>
>
> <name>bgColor</name>
>
> <required>true</required> <!-- bgColor is required -->
>
> </attribute>
>
> <attribute>
>
> <name>color</name>
>
> <required>false</required>
>
> </attribute>
>
> <attribute>
>
> <name>align</name>
>
> <required>false</required>
>
> </attribute>
>
> <attribute>
>
> <name>fontSize</name>
>
> <required>false</required>
>
> </attribute>
>
> <attribute>
>
> <name>fontList</name>
>
> <required>false</required>
>
> </attribute>
>
> <attribute>
>
> <name>border</name>
>
> <required>false</required>
>
> </attribute>
>
> <attribute>
>
> <name>width</name>
>
> <required>false</required>
>
> </attribute>
>
> </tag>
>
> <tag>
>
> <name>debug</name>
>
> <tagclass>coreservlets.tags.DebugTag</tagclass>
>
> <info>Includes body only if debug param is set.</info>
>
> <!-- TOMCAT 3.1 DOES NOT SUPPORT BODYCONTENT
>
> <bodycontent>JSP</bodycontent> -->
>
> </tag>
>
> <tag>
>
> <name>filter</name>
>
> <tagclass>coreservlets.tags.FilterTag</tagclass>
>
> <info>Replaces HTML-specific characters in body.</info>
>
> <!-- TOMCAT 3.1 DOES NOT SUPPORT BODYCONTENT
>
> <bodycontent>JSP</bodycontent> -->
>
> </tag>
>
> <tag>
>
> <name>repeat</name>
>
> <tagclass>coreservlets.tags.RepeatTag</tagclass>
>
> <info>Repeats body the specified number of times.</info>
>
> <!-- TOMCAT 3.1 DOES NOT SUPPORT BODYCONTENT
>
> <bodycontent>JSP</bodycontent> -->
>
> <attribute>
>
> <name>reps</name>
>
> <required>true</required>
>
> <!-- rtexprvalue indicates whether attribute
>
> can be a JSP expression. -->
>
> <rtexprvalue>true</rtexprvalue>
>
> </attribute>
>
> </tag>
>
> <tag>
>
> <name>if</name>
>
> <tagclass>coreservlets.tags.IfTag</tagclass>
>
> <info>if/condition/then/else tag.</info>
>
> <!-- TOMCAT 3.1 DOES NOT SUPPORT BODYCONTENT
>
> <bodycontent>JSP</bodycontent> -->
>
> </tag>
>
> <tag>
>
> <name>condition</name>
>
> <tagclass>coreservlets.tags.IfConditionTag</tagclass>
>
> <info>condition part of if/condition/then/else tag.</info>
>
> <!-- TOMCAT 3.1 DOES NOT SUPPORT BODYCONTENT
>
> <bodycontent>JSP</bodycontent> -->
>
> </tag>
>
> <tag>
>
> <name>then</name>
>
> <tagclass>coreservlets.tags.IfThenTag</tagclass>
>
> <info>then part of if/condition/then/else tag.</info>
>
> <!-- TOMCAT 3.1 DOES NOT SUPPORT BODYCONTENT
>
> <bodycontent>JSP</bodycontent> -->
>
> </tag>
>
> <tag>
>
> <name>else</name>
>
> <tagclass>coreservlets.tags.IfElseTag</tagclass>
>
> <info>else part of if/condition/then/else tag.</info>
>
> <!-- TOMCAT 3.1 DOES NOT SUPPORT BODYCONTENT
>
> <bodycontent>JSP</bodycontent> -->
>
> </tag>
>
> </taglib>
>
>
>
> ExampleTag.java
>
> package coreservlets.tags;
>
> import javax.servlet.jsp.*;
>
> import javax.servlet.jsp.tagext.*;
>
> import java.io.*;
>
> /** Very simple JSP tag that just inserts a string
>
> * ("Custom tag example...") into the output.
>
> * The actual name of the tag is not defined here;
>
> * that is given by the Tag Library Descriptor (TLD)
>
> * file that is referenced by the taglib directive
>
> * in the JSP file.
>
> * <P>
>
> * Taken from Core Servlets and JavaServer Pages
>
> * from Prentice Hall and Sun Microsystems Press,
>
> * http://www.coreservlets.com/.
>
> * © 2000 Marty Hall; may be freely used or adapted.
>
> */
>
> public class ExampleTag extends TagSupport {
>
> public int doStartTag() {
>
> try {
>
> JspWriter out = pageContext.getOut();
>
> out.print("Custom tag example " +
>
> "(coreservlets.tags.ExampleTag)");
>
> } catch(IOException ioe) {
>
> System.out.println("Error in ExampleTag: " + ioe);
>
> }
>
> return(SKIP_BODY);
>
> }
>
> }
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