Error compiling expressions in custom JSP tags

We had the same problem and we have found the same solution. Not to nice.
          Jan
          

Here is what I have set up:
custom.jsp:
<%@ taglib uri="/WEB-INF/tlds/mytags.tld" prefix="my" %>
<!-- <%@ taglib uri="myTags" prefix="my" %> -->
<HTML>
<HEAD>
<TITLE>Custom tag example</TITLE>
</HEAD>
<BODY>
<H1>Custom tag Example</H1>
<my:wrapper style="k001">
     <b>hello!</b>
</my:wrapper>
</BODY>
</HTML>
Under WEB-INF/tlds, I placed mytags.tld:
<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE taglib
PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.2//EN"
"http://java.sun.com/j2ee/dtd/web-jsptaglibrary_1_2.dtd">
<taglib>
<tlib-version>1.0</tlib-version>
<jsp-version>1.2</jsp-version>
<short-name>MyTags</short-name>
<tag>
<name>wrapper</name>
<tag-class>mytaglib.WrapperTag</tag-class>
<body-content>JSP</body-content>
<attribute>
<name>style</name>
<required>true</required>
</attribute>
</tag>
</taglib>
I've seen examples for jsp-version 1.1 and 1.2. Can you suggest what should be placed in <uri>...</uri>
Do you think I have a problem with my tomcat config or compiling the java class?
Thanks.

Similar Messages

  • Problems with custom JSP Tag, can someone offer some advice?

    Greetings,
    I have a problem here that I am stumped on. I am trying to create a custom JSP tag, I created a simple "Hello World" JSP, however, I am coming up a bit short. I am running Apache Tomcat 6.0 on a Win XP environment.
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    TLDTest.tld:
    <?xml version="1.0" encoding="ISO-8859-1" ?>
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         <jspversion>1.2</jspversion>
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    <!-- Here goes nothing!!! -->
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         <info>a simple hello tag</info>
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    <!-- Personalize the name -->
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    The Hola.jsp is:
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    And the source code for the .class file (named Hola) is:
    import javax.servlet.jsp.*;
    import javax.servlet.jsp.tagext.*;
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         private String name = null;
         public void setName(String value)
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         public String getName()
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    /* doStartTag is called and defined below here for the java tag */
         public int doStartTag()
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                   JspWriter out = pageContext.getOut();
                   out.println("<table border=1>");
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    org.apache.jasper.JasperException: /Hola/Hola.jsp(6,2) No tag "Hola" defined in tag library imported with prefix "test"
         org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:40)
         org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:407)
         org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:198)
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    Sincerely,
    - Josh

    Ok
    1 - In the JSP, your tag should be "hola" not "Hola". Yes case matters.
      <test:hola name="Woot Master" />2 - Importing the taglibrary correctly.
    Either reference its tld <%@ taglib uri="/WEB-INF/Hola.tld" prefix="test" %>
    (and have the tld file sitting in /WEB-INF/Hola.tld )
    or
    Define a uri for it in the tld...
    <taglib>
    <tlibversion>1.0</tlibversion>
    <jspversion>1.2</jspversion>
    <shortname>firstTag</shortname>
    <uri>http://mytag/hola</uri>
    ...and then use that uri to import it in your JSP
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    import javax.servlet.jsp.tagext.*;
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    ...That will move it in your folder structure to be /mypackage/Hola.java
    You would also need to update the tagclass element in the tld to reflect the change:
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    WEB-INF/hola.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_2.dtd">
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         <tlibversion>1.0</tlibversion>
         <jspversion>1.2</jspversion>
         <shortname>firstTag</shortname>
         <uri>http://mytag/hola</uri>
         <info>My First Tag</info>
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         <tag>
              <name>hola</name>
              <tagclass>mypackage.Hola</tagclass>
              <bodycontent>empty</bodycontent>
              <info>a simple hello tag</info>
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              <!-- Personalize the name -->
              <attribute>
                   <name>name</name>
                   <required>false</required>
                   <rtexprvalue>false</rtexprvalue>
              </attribute>
         </tag>
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    <%@ taglib uri="http://mytag/hola" prefix="test"%>
    <html>
      <head>Just a little test on tags</head>
      <body>
        <hr />
        <test:hola name="Woot Master" />
        <hr />
      </body>
    </html>Hola.java. Compiles into WEB-INF/classes/mypackage/Hola.class
    package mypackage;
    import javax.servlet.jsp.*;
    import javax.servlet.jsp.tagext.*;
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         public void setName(String value) {
              name = value;
         public String getName() {
              return (name);
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         public int doStartTag() {
              try {
                   JspWriter out = pageContext.getOut();
                   out.println("<table border=1>");
                   if (name != null)
                        out.println("<tr><td> Hola " + name + "!" + "</td></tr>");
                   else
                        out.println("<tr><td> Hola! Porque tu es una piquito perra? </td></tr>");
              } catch (Exception ex) {
                   throw new Error("Dio's Mio!, Esta No Va!, tu problema es en la StartTag!!!");
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         public int doEndTag() {
              try {
                   final JspWriter out = pageContext.getOut();
                   out.println("</table>");
                   return super.doEndTag();
              } catch (final Exception ex) {
                   throw new Error("Oops, it's broken, check your coding in the End tag!!!");
    }Cheers,
    evnafets

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  • Custom JSP Tags for Weblogic

    Hi,
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    As there seems to be general interest, a link would probably be a great
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              Regards
              Daniel Hoppe
              -----Original Message-----
              From: Michael Girdley [mailto:[email protected]]
              Posted At: Friday, August 25, 2000 8:03 AM
              Posted To: jsp
              Conversation: Custom JSP Tags for Weblogic
              Subject: Re: Custom JSP Tags for Weblogic
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              Michael Girdley
              BEA Systems Inc
              "Jamie" <[email protected]> wrote in message
              news:[email protected]
              > Update
              > =======
              >
              > Weblogic Portal has some Tag libraries. I've downloaded the trial
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              > Jamie <[email protected]> wrote in message
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              > >
              > > 2) Does Weblogic come with any tag libraries (for loops, if, etc)
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              > where
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              > >
              > > 3) Are there any tag libraries out there (JRun, for example) that
              have
              > been
              > > successfully run on Weblogic ?
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              > >
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              > >
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              > >
              > > Jamie
              > >
              > >
              >
              >
              

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    We have our own custom JSP tag libraries (some of them extend the Struts tags, but many do not) and want those to render correctly in the design view.
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    nvm..i already fix the problem..

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