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From "Lacerda, Wellington (AFIS)" <Wellington.Lace...@fao.org>
Subject RE: Unable to open taglibrary csajsp-taglib.tld : Parse Error in the tag library descriptor: Element "web-app" does not allow "servlet" he re.
Date Fri, 24 Nov 2000 14:09:16 GMT
Not only. The inner tags must be ordered too. It's annoying.

Wellington

		-----Original Message-----
		From:	Pierre Delisle [mailto:pierre.delisle@sun.com]
		Sent:	24 November 2000 15:05
		To:	taglibs-user@jakarta.apache.org
		Subject:	Re: Unable to open taglibrary
csajsp-taglib.tld : Parse Error in the tag library descriptor: Element
"web-app" does not allow "servlet" here.

		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(JspParseEve
ntListener.java:672)
		>         at
org.apache.jasper.compiler.DelegatingListener.handleDirective(DelegatingList
ener.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(JspSe
rvlet.java:149)
		>         at
org.apache.jasper.runtime.JspServlet$JspServletWrapper.service(JspServlet.ja
va: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/.
		> 
		> &copy; 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/.
		> 
		> * &copy; 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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