did you use <pref:tag... param1="wert">? (it's lower case "p")
BeanIntrospection (java.beans.Introspector) uses this scheme: a attribute with name
"param1" has a "getParam1" accessor and/or a "setParam1" mutator. So I think you
should try to use "param1" instead of "Param1" in jsp and descriptor.
Peter
Rajkishore Dash wrote:
> Hi All,
>
> I am facing some problems with custom jsp tags. I am testing this code in IBM
> Visual Age for java 3.5.3 in IBM websphere test environment.The problem arises
> only when i
> try to pass any attribute from the JSP other wise it works fine.
>
> Can anybody please help ?
>
> Thanks,
> Raj
>
> +++++++++++++++++++++++++++++++++++++++ start Error text
> ++++++++++++++++++++++++++++++++++++++++++
> Error 500
> An error has occured while processing
> request:http://localhost:8080/jsp/customtags.jsp
> Message: Server caught unhandled exception from servlet [jsp]: Cannot find any
> information on property 'Param1' in a bean of type
> 'com.tcs.test.TestTagHandlerNew'
>
> Target Servlet: jsp
> StackTrace:
> -------------------------------------------------------------------------------
> -
> Root Error-1: Cannot find any information on property 'Param1' in a bean of
> type 'com.test.TestTagHandlerNew'
>
> +++++++++++++++++++++++++++++++++++++++ End Error text
> ++++++++++++++++++++++++++++++++++++++++++
>
> The Constructure is called. But it did not find the the info about Param1
> Property. Please note that, the get method is in place.
>
> +++++++++++++++++++++++++ Tag handler Code
> +++++++++++++++++++++++++++++++++++++++++++++++++++
>
> package com.test;
>
> /**
> * Insert the type's description here.
> * Creation date: (7/21/01 1:42:15 PM)
> * @author: Administrator
> */
>
> import javax.servlet.jsp.*;
> import javax.servlet.jsp.tagext.*;
> import java.io.*;
> import javax.servlet.*;
> import javax.servlet.http.HttpSession;
> import javax.servlet.http.HttpUtils;
> import javax.servlet.http.HttpServletRequest;
> import java.util.StringTokenizer;
> import java.util.Vector;
>
> public class TestTagHandlerNew extends javax.servlet.jsp.tagext.TagSupport {
> /**
> * TestTagHandler constructor comment.
> */
>
> private String Param1 = null;
>
> public TestTagHandlerNew() {
> super();
> System.out.println("The Constructure is called");
> }
>
> public String getParam1() {
>
> return Param1;
> }
>
> public void setParam1( String aParam1) {
>
> Param1 = aParam1;
> }
>
> public int doStartTag() throws JspException{
>
> JspWriter out = pageContext.getOut();
>
> try {
>
> out.println("Out value = "+Param1);
>
> } catch (IOException ioe) {
> ioe.printStackTrace();
>
> new JspException("IOExceptio occured in dostartTag");
> }
>
> catch(Exception e){
> new JspException("Exception occured in dostartTag");
> }
>
> return EVAL_BODY_INCLUDE;
> }
>
> public int doEndTag() throws JspException{
>
> JspWriter out = pageContext.getOut();
>
> try {
> out.println("do End Tag is executed");
>
> }
> catch(IOException ioe) {
> new JspException("Exception occured in doEndTag");
> }
> return EVAL_PAGE;
>
> }
>
> }
> ++++++++++++++++++++++++++++++ End Tag Handler Code
> ++++++++++++++++++++++++++++++++++++++++++++++++
>
> ++++++++++++++++++++++++++++ Start Tag Libary
> Descriptor++++++++++++++++++++++++++++++++++++++++++++
> <?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";>
>
> <taglib>
> <tlibversion>1.0</tlibversion>
> <jspversion>1.1</jspversion>
> <shortname>as</shortname>
> <urn></urn>
> <info>Tag Library Test</info>
>
> <tag>
> <name>test</name>
> <tagclass>com.test.TestTagHandlerNew</tagclass>
> <bodycontent>JSP</bodycontent>
> <info>Generates the HTML Table</info>
> <attribute>
> <name>Param1</name>
> <requird>false</requird>
> <rtexprvalue>true</rtexprvalue>
> </attribute>
>
> </tag>
> </taglib>
>
> ++++++++++++++++++++++++++++++++++ End Tld descriptor
> +++++++++++++++++++++++++++++++++++++++
>
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