JSP taglib tags

hello every one
i am using JSP taglibs in my work and i am trying the example given in book - " JSP The Complete Reference" . example of database operations . In chapter 11.
But when i compile i am getting warning that EVAL_BODY_TAG is deprecated.
so i would like to know what can i use instead of EVAL_BODY_TAG
Thanks
Amol

Use either "EVAL_BODY_BUFFERED" or "EVAL_BODY_AGAIN".

Similar Messages

Error in parsing the taglib tag in the JSP page

Hi
We are trying to deploy and run a Web Application in CE 7.1 SP01. We are successful in deploying and running servlet based web pages, but when it comes to JSP's the taglibs are not parsed and we get the following error message
Runtime error in processing of the JSP file E:\usr\sap\CE1\J01\j2ee\cluster\apps\sap.com\TestNWEAR\servlet_jsp\TestNW\root\admin\main.jsp.
The error is: com.sap.engine.services.servlets_jsp.jspparser_api.exception.JspParseException: Error in parsing the taglib tag in the JSP page. Cannot resolve URI: [webwork]. Possible reason - validation failed. Check if your TLD is valid against its scheme.02004C4F4F5000190000004E000013400191D308B45
Processing HTTP request to servlet [jsp] finished with error.
The error is: java.io.FileNotFoundException: E:\usr\sap\CE1\J01\j2ee\cluster\apps\sap.com\TestNWEAR\servlet_jsp\TestNW\root\admin\webwork (The system cannot find the file specified)02004C4F4F50001900000051000013400191D308B45AF1AB
We followed the below weblog to correct the TLD's in JAVA EE 5 @ SAP but it did not work for us.
/people/community.user/blog/2006/10/13/porting-the-java-blueprint-solutions-catalogue-applications-to-sap-netweaver-application-server-java-ee-5-edition
Any immediate help will be rewarded with full points
Thanks in advance
Lakshmi
Edited by: lakshmi N Munnungi on May 5, 2008 11:36 PM
Edited by: lakshmi N Munnungi on May 5, 2008 11:39 PM

Hi Lakshmi,
I have also the same problem. If you have found the solution please post it thanks,
Thanks,
Tariq

JSP HTMLB tags/Taglib

Hi all,
Are there any JSP HTMLB tags like there are in the portals environment? i.e., tableview, button, tray, etc.?
I know there's a mobilehtmlb.jar, but I couldn't find anything about htmlb tags for MI.
If you have any idea/info, please let me know.
Thx,
mike

Jelle,
I found the jars, but I am awaiting a response from the product manager.   Through a NoClassDefFound error, I found out I also had to add logging.jar.
Now this is what I'm getting:
java.lang.NullPointerException
     at com.sapportals.htmlb.util.Log.getLoggingProperties(Log.java:22)
     at com.sapportals.htmlb.util.Log.getLogLocation(Log.java:44)
     at com.sapportals.htmlb.rendering.RendererManager.createUIBrowserRenderer(RendererManager.java:416)
     at com.sapportals.htmlb.rendering.RendererManager.initialize(RendererManager.java:446)
     at com.sapportals.htmlb.rendering.RendererManager.getJavascriptFileName(RendererManager.java:493)
     at com.sapportals.htmlb.rendering.PageContext.getJavascriptUrl(PageContext.java:996)
     at com.sapportals.htmlb.rendering.PageContext.createDocument(PageContext.java:1015)
     at com.sapportals.htmlb.taglib.PageTag.doStartTag(PageTag.java:53)
     at jsp._0002fjsp_0002fmenu_0002ejspmenu_jsp_30._jspService(_0002fjsp_0002fmenu_0002ejspmenu_jsp_30.java:107)
     at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
..etc., etc...
Let me know if you have any ideas.
Thanks,
mike

Connection Pooling and JSP Custom Tag Library - is code (inside) the best way/correc?

Hi, can anyone advise as to whether my tag library code (based
on Apache Jakarta Project) will actually achieve connection
pooling functionality across my entire JSP based application? I
am slightly concerned that my OracleConnectionCacheImpl object
may exist multiple times, hence rendering my conection pooling
attempt useless.
package com.solved.tag.dbtags.connection;
import java.io.IOException;
import java.sql.Connection;
import java.sql.SQLException;
import javax.servlet.jsp.tagext.TagSupport;
import javax.servlet.jsp.JspTagException;
import javax.sql.DataSource;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import oracle.jdbc.pool.OracleConnectionCacheImpl;
* <p>JSP tag connection, used to get a
* java.sql.Connection object.</p>
* <p>JSP Tag Lib Descriptor
* <pre>
* <name>connection</name>
<tagclass>com.solved.tag.dbtags.connection.ConnectionTag</t
agclass>
* <bodycontent>JSP</bodycontent>
<teiclass>com.solved.tag.dbtags.connection.ConnectionTEI</t
eiclass>
* <info>Opens a connection based on a jndiName.</info>
* <attribute>
* <name>id</name>
* <required>true</required>
* <rtexprvalue>false</rtexprvalue>
* </attribute>
* </pre>
* @author Matt Shannon
public class ConnectionTag extends TagSupport {
static private OracleConnectionCacheImpl cache = null;
public int doStartTag() throws JspTagException {
try {
Connection conn = null;
if (cache == null) {
try {
InitialContext ic = new InitialContext();
DataSource ds = (DataSource) ic.lookup
("jdbc/pool/OracleCache");
cache = (OracleConnectionCacheImpl)ds;
catch (NamingException ne) {
throw new JspTagException(ne.toString());
conn = cache.getConnection();
pageContext.setAttribute(getId(),conn);
catch (SQLException e) {
throw new JspTagException(e.toString());
return EVAL_BODY_INCLUDE;
package com.solved.tag.dbtags.connection;
import java.sql.Connection;
import java.sql.SQLException;
import javax.servlet.jsp.tagext.TagSupport;
* <p>JSP tag closeconnection, used to close the
* specified java.sql.Connection.<p>
* <p>JSP Tag Lib Descriptor
* <pre>
* <name>closeConnection</name>
<tagclass>com.solved.tag.dbtags.connection.CloseConnectionTag&
lt;/tagclass>
* <bodycontent>empty</bodycontent>
* <info>Close the specified connection. The "conn"
attribute is the name of a
* connection object in the page context.</info>
* <attribute>
* <name>conn</name>
* <required>true</required>
* <rtexprvalue>false</rtexprvalue>
* </attribute>
* </pre>
* @author Matt Shannon
* @see ConnectionTag
public class CloseConnectionTag extends TagSupport {
private String _connId = null;
* The "conn" attribute is the name of a
* page context object containing a
* java.sql.Connection.
* @param connectionId
* attribute name of the java.sql.Connection to
close.
* @see ConnectionTag
public void setConn(String connectionId) {
_connId = connectionId;
public int doStartTag() {
try {
Connection conn = (Connection)pageContext.getAttribute
(_connId);
conn.close();
} catch (SQLException e) {
// failing to close a connection is not fatal
e.printStackTrace();
return EVAL_BODY_INCLUDE;
public void release() {
_connId = null;
package com.solved.tag.dbtags.connection;
import javax.servlet.jsp.tagext.TagData;
import javax.servlet.jsp.tagext.TagExtraInfo;
import javax.servlet.jsp.tagext.VariableInfo;
* TagExtraInfo for the connection tag. This
* TagExtraInfo specifies that the ConnectionTag
* assigns a java.sql.Connection object to the
* "id" attribute at the end tag.
* @author Matt Shannon
* @see ConnectionTag
public class ConnectionTEI extends TagExtraInfo {
public final VariableInfo[] getVariableInfo(TagData data)
return new VariableInfo[]
new VariableInfo(
data.getAttributeString("id"),
"java.sql.Connection",
true,
VariableInfo.AT_END
data-sources.xml:
<?xml version="1.0"?>
<!DOCTYPE data-sources PUBLIC "Orion data-
sources" "http://xmlns.oracle.com/ias/dtds/data-sources.dtd">
<data-sources>
<data-source
class="oracle.jdbc.pool.OracleConnectionCacheImpl"
name="jdbc/pool/OracleCache"
location="jdbc/pool/OracleCache"
url="jdbc:oracle:thin:@oracle1:1521:pdev"
>
<property name="maxLimit" value="15" />
<property name="cacheScheme" value="2" />
<property name="user" value="console" />
<property name="password" value="console" />
<description>
This DataSource is using an Oracle-native DataSource Class so as
to allow Oracle Specific extensions.
A getConnection() call on this DataSource will return
oracle.jdbc.driver.OracleConnection.
The connection returned is a logical connection.
The caching scheme in place is Fixed Wait. Refer below to
possible values.
Dynamic 1
Fixed Wait 2
Fixed Return Null 3
</description>
</data-source>
</data-sources>
many thanks,
Matt.

Hi. Show me your pool definition.
Joe
Ramamurthy wrote:
I am using the jsp custom tag library from BEA called sqltags.tld which came with Weblogic 5.1. Currently I am using Weblogic6.1 sp2 on Solaris.
I have created a Connection Pool for Sybase database using the driver com.sybase.jdbc.SybDriver.
When I created jsp page to connect to the connection pool using sqltags custom tag library, I am getting the error
"javax.servlet.jsp.JspException: Failed to write body content
at weblogic.taglib.sql.ConnectionTag.doAfterBody(ConnectionTag.java:43)
at jsp_servlet.__hubwcdata._jspService(__sampletest.java:1014)"
After this message, whenever I try to access the same jsp page I am getting the message
"javax.servlet.jsp.JspException: Failed to load JDBC driver: weblogic.jdbc.pool.D
river
at weblogic.taglib.sql.ConnectionTag.doStartTag(ConnectionTag.java:34)
at jsp_servlet.__hubwcdata._jspService(__sampletest.java:205)".
Can you please help me the reason why this problem is happening and how to fix this ?
This problem doexn't happen consistently. This occurs once in a while.
I tried to increase Login delay Seconds parameter in the Connection Pool to 15 sec. It didn't help me much.
Thanks for your help !!!
Ram

Jsp taglibs in include files not detected, throws errors, no code insight

I have a jsp which is included in all the other jsp. it looks something like this
taglibs.jsp
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<%@ taglib uri="http://www.springframework.org/tags" prefix="spring" %>
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
test.jsp
<%@ include file="/jsp/menu/taglibs.jsp"%>
<html>
     <head>
          <title>Tours</title>
     </head>
     <body>
<form:form commandName="testCommand">
               <form:hidden path="tour.firstname" id="tour.firstname" />
and so on.
I am having 2 problems
1. the jsp editor show errors all over the place saying
element path not expected
element commandName not expected etc.
2. no code insights.
but if i include the taglib def in test.jsp it dosn't show any error and also provides code insights. but seldom do people include all taglibs in all jsps.
is there a way for Jdeveloper to show code insights in jsp pages which includes a jsp or like xml schemas could be added at some place(tools-pref-xml schemas) and when used anywhere, would provide code insights.

am not sure, try with this
<jsp:include   .../>

How to use JSP custom tag lib in PAR file?

Hi All,
I am trying to customize mastheaderpar file. For that I have downloaded relevant par file and making the changes accordingly.
As part of the changes I would require to use JSP custom tag library in my par file.
I have the TLD file and relevant classes in the jar file. I would like to know where and what kind of modifications have to be done to use the jsp custom tag library.
I tried modifying some things in portalapp.xml but was not successful.
Please help me on how to proceed with this? It would be great if you can provide the xml entry to use this tag library
Thanks
Santhosh

Hi Johny,
Thanks for the reply. Actually I am able to change colors etc. with out any problem.
My requirement is to use XMLTaglib in mastheader par file. This tag lib is from apache tomcat. I have the relevant TLD and class files. I copied TLD file into taglib dir of portal-inf and class file in src api.
And I have added the following line in portalapp.xml under component-profile section of default
<property name="tlxtag" value="/SERVICE/Newmastheader/taglib/taglibs-xtags.tld">
Is this the right way to use tag lib? Actually before adding this line I used to get the error saying "Error parsing taglib", but now the error does not occur and I am getting new error. This is an exception in one of the taglib classes.
Could any one provide me some inputs on how to check this error?
Thanks
Santhosh

Error in parsing taglib taglib tag in web.xml or .tld file of the taglib

Hi All,
I have added ResourceBundle.tld file in following path : /PORTAL-INF/taglib/tld/
I have added portalapp.xml file following entry :
<property name="/PORTAL-INF/taglib/tld/ResourceBundle.tld" value="/PORTAL-INF/taglib/tld/ResourceBundle.tld"/>
I have added jsp file following entry :
<%@ taglib uri="/PORTAL-INF/taglib/tld/ResourceBundle.tld" prefix="bundle" %>
I am getting the following the error: Error in parsing taglib taglib tag in web.xml or .tld file of the taglib library
can you tell me where i am giving the wrong.
Regards
Siva

hi rabih,
in jsp..
<%@ taglib uri="tagLib" prefix="bundle" %>
in portalapp.xml
<component-profile>
<property name="tagLib" value="/PORTAL-INF/taglib/tld/ResourceBundle.tld"/>
</component-profile>
it may help u..
regards,
Chinnadurai.R

JSP applet tag X Html applet tag (what is the difference?)

what is the advantage in using the JSP applet tag instead of a simple Html applet tag ?
second question:
I have an applet in a Html frame, and a menu on the left side.... When the user select the applet option at first time, everything runs ok.. after the user select another option and then select the applet again, it fails in some features .. Why ?

well, if by "the JSP applet tag", you mean the jsp:plugin tag.. that will just generate the same HTML tag you would write. The only advantage would be it should be less typing to use the taglib.
second answer:
without seeing any code, it'd be hard to figure out the problem. The obvious thing is you are setting some state of something that is preventing further action.

Error in JSP Custom Tag Program

Hi Dear,
when I compile my JSP Custom tag program on weblogic Its give that Error..
Parsing of JSP File '/Home.jsp' failed: /Home.jsp(-1): cannot load TLD: weblogic.xml.dom.ChildCountException: missing child tagclass in tag
probably occurred due to an error in /Home.jsp line -1:
Tue Sep 09 18:46:56 GMT 2008
My Files are:
Home.jsp:
<%@ taglib uri="/WEB-INF/tlds/taglib.tld" prefix="neeraj" %>
<neeraj:hello name="Vijay">
It is a Tag Body<br>
</neeraj:hello>
taglib.tld:
<taglib>
<tlib-version>1.0</tlib-version>
<jsp-version>1.2</jsp-version>
<uri>WEB-INF/tlds/taglib.tld</uri>
<tag>
<name>hello</name>
<tag-class>mypack.MyTag</tag-class>
<attribute>
<name>name</name>
<required>true</required>
</attribute>
</tag>
</taglib>
MyTag.java:
package mypack;
import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;
public class MyTag extends TagSupport
String name;
public void setName(String c)
try
name=c;
catch(Exception e)
count=1;
public int doStartTag()
return EVAL_BODY_INCLUDE;
public int doAfterBody
JspWriter out=pageContext.getOut();
out.print("Good Night "+name);
catch(Exception e)
return EVAL_PAGE;
web.xml:
<web-app>
<welcome-file-list>
<welcome-file>/Home.jsp</welcome-file>
</welcome-file-list>
<taglib>
<taglib-uri>taglib</taglib-uri>
<taglib-location>/WEB-INF/tlds/taglib.tld</taglib-location>
</taglib>
</web-app>
Please resolve my issue..

I had the same problem. In your .tld change tagclass to tag-class and bodycontent to body-content and that should do the trick. The names slightly changed for JSP spec 1.2.

Initial problem with JSP Custom Tag devolopment

Hi ,
I have encountered a problem with my JSP application which utilizes a simple custom tag.
First I created followinng directories.
1. %TOMCAT_HOME%\webapps\testTags
2. %TOMCAT_HOME%\webapps\testTags\META-INF
3. %TOMCAT_HOME%\webapps\testTags\WEB-INF
4. %TOMCAT_HOME%\webapps\testTags\WEB-INF\tlds
5. %TOMCAT_HOME%\webapps\testTags\WEB-INF\classes
6. %TOMCAT_HOME%\webapps\testTags\WEB-INF\classes\com
7. %TOMCAT_HOME%\webapps\testTags\WEB-INF\classes\com\tek271
8. %TOMCAT_HOME%\webapps\testTags\WEB-INF\classes\com\tek271\testTags
I created the essential four files, that is named as follows.
1.TagError.java
2.web.xml
3.testTld.tld
4.testJsp.jsp
Then i put the files under these directories as given below
testJsp.jsp under %TOMCAT_HOME%\webapps\testTags.
web.xml under %TOMCAT_HOME%\webapps\testTags\WEB-INF
TagError.java under %TOMCAT_HOME%\webapps\testTags\WEB-INF\classes
TagError.class under %TOMCAT_HOME%\webapps\testTags\WEB-INF\classes\com\tek271\testTags
testTld.tld %TOMCAT_HOME%\webapps\testTags\WEB-INF\tlds
Here is the content inside the files.
1.TagError.java
package com.tek271.testTags;
import java.io.*;
import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;
public class TagError extends TagSupport {
private String mColor = "red";
public void setColor(String aColor) {
mColor = aColor;
} // setColor
public int doStartTag() throws JspException {
try {
JspWriter out = pageContext.getOut();
out.print("<font color=\"");
out.print(mColor);
out.print("\"><b>Error: ");
} catch (IOException ex) {
throw new JspTagException(ex.getMessage());
return EVAL_BODY_INCLUDE; // other return: SKIP_BODY
} // doStartTag()
public int doEndTag() throws JspException {
try {
JspWriter out = pageContext.getOut();
out.println("</b></font><br>");
} catch (IOException ex) {
throw new JspTagException(ex.getMessage());
return EVAL_PAGE; // other return: SKIP_PAGE
} // doEndTag()
} // TagError
2.web.xml
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app>
<taglib>
<taglib-uri>/testTaglib</taglib-uri>
<taglib-location>/WEB-INF/tlds/testTld.tld</taglib-location>
</taglib>
</web-app>
3.testTld.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">
<taglib>
<tlibversion>1.0</tlibversion>
<jspversion>1.1</jspversion>
<shortname>testTld</shortname>
<info>Testing jsp tags</info>
<tag>
<name>tagError</name>
<tagclass>com.tek271.testTags.TagError</tagclass>
<bodycontent>JSP</bodycontent> 
<info>Show a string as an error message</info>
<attribute>
<name>color</name>
<required>false</required>
</attribute>
</tag>
</taglib>
4.testJsp.jsp
<%@ taglib uri="/testTaglib" prefix="test" %>
<html>
<head>
<title>Testing Tag Library</title>
</head>
<body>
<test:tagError>Invalid user name</test:tagError>
<test:tagError color="blue">Invalid Password</test:tagError>
</body>
</html>
but i am getting the following error.
Apache Tomcat/4.0.3 - HTTP Status 500 - Internal Server Error
type Exception report
message Internal Server Error
description The server encountered an internal error (Internal Server Error) that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: File "/testTaglib" not found
at org.apache.jasper.compiler.TagLibraryInfoImpl.(TagLibraryInfoImpl.java:214)
at org.apache.jasper.compiler.TagLibraryInfoImpl.(TagLibraryInfoImpl.java:174)
at org.apache.jasper.compiler.JspParseEventListener.processTaglibDirective(JspParseEventListener.java:1162)
at org.apache.jasper.compiler.JspParseEventListener.handleDirective(JspParseEventListener.java:758)
at org.apache.jasper.compiler.DelegatingListener.handleDirective(DelegatingListener.java:121)
at org.apache.jasper.compiler.Parser$Directive.accept(Parser.java:255)
at org.apache.jasper.compiler.Parser.parse(Parser.java:1145)
at org.apache.jasper.compiler.Parser.parse(Parser.java:1103)
at org.apache.jasper.compiler.Parser.parse(Parser.java:1099)
at org.apache.jasper.compiler.ParserController.parse(ParserController.java:213)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:210)
at org.apache.jasper.servlet.JspServlet.loadJSP(JspServlet.java:552)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.loadIfNecessary(JspServlet.java:177)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:189)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:382)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:474)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:190)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2343)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1012)
at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1107)
at java.lang.Thread.run(Thread.java:536)
why is it like this ?please give me a solution.
Thanking in advance.
From
Vinod A.

Dear patreck ,
It does not work.
I have replaced the line
<%@ taglib uri="/testTaglib" prefix="test" %>
with
<%@ taglib uri="WEB-INF/tlds/testTaglib" prefix="test" %>
but now it shows the error ,
description The server encountered an internal error (Internal Server Error) that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: File "/testTags/WEB-INF/tlds/testTaglib" not found
any more suggestion ?
From Vinod A.

JSP Custom tag uri problem

I'm using custom tags in my app (JSP 1.2). My tld is located in WEB-INF/tlds (not packaged in a JAR), meaning that the uri in the tld file should be picked up by JSP 1.2's autodiscovery. This works fine in actual deployment, but Nitrox claims that:
"The tag library uri "mytaglib" cannot be mapped to an existing tld file. "
when I attempt to reference it as follows from within my jsps:
<%@ taglib uri="mytaglib" prefix="m" %>
Do you know if this is a bug, or have any suggestions as to why the tld uri isn't being picked up by Nitrox?
Thanks,
John

This is a known (kind of) issue. There are 2 easy workarounds:
1- Specify the path to the tld file in the uri attribute. For example:
<%@ taglib uri="/WEB-INF/mytaglib.tld" prefix="m" %>
2- Map the tld file in web.xml. For example:
<taglib>
<taglib-uri>mytaglib</taglib-uri>
<taglib-location>/WEB-INF/mytaglib.tld</taglib-location>
</taglib>
M7 Support

JSP Taglib for RSS

Just wondering if anyone else is having better luck - been working thru:
http://developer.java.sun.com/developer/technicalArticles/javaserverpages/rss_utilities/
Each time I try and parse an RSS file I get the following trace:
<rss>
<channel>
<title>
</title>
<link>
</link>
<description>
</description>
</channel>
<item>
INFO: items does not exist or method signature is incorrect
java.lang.NoSuchMethodException
at java.lang.Class.getMethod0(Native Method)
at java.lang.Class.getMethod(Class.java:888)
at com.sun.cnpi.rss.handlers.DefaultElementHandler.startElement DefaultElementHandler.java:91)
at com.sun.cnpi.rss.handlers.DocumentHandler.startElement(DocumentHandler.java:98)
at org.apache.crimson.parser.Parser2.maybeElement(Parser2.java:1477)
... rest of stack trace.
This is tried with 5 or 6 different RSS feeds (0.91 and 2.0) and with both crimson and the latest xerces parsers (stacktrace is the same apart from the parser specific parts - it's always in com.sun.cnpi.rss.handlers.DocumentHandler.startElement(DocumentHandler.java:98)
It appears to be trying to call a method based on the fact that it has seen an items tag (which it hasn't - it's an item tag).
The JSP:
<%@ taglib uri="/rssutils.tld" prefix="rss" %>
<rss:feed
url="path-to-feed"
feedId="intranetRT"/>
<h2>"><rss:channelTitle feedId="intranetRT"/></a></h2>
<rss:forEachItem feedId="intranetRT">
<h3><a href="<rss:itemLink feedId="intranetRT"/>"><rss:itemTitle feedId="intranetRT"/></a></h3>
<div class="item">
<p><rss:itemDescription feedId="intranetRT"/></p>
</div>
</rss:forEachItem>
Maybe of interest - all tried RSS streams work fine for various other RSS readers and return valid from 2 different validators.
Hints anyone?

I try using this tag library, and I get the following on my page:
java.lang.ClassNotFoundException: com.cj.rss.objVariable
as the root cause for this excemption:
org.apache.jasper.JasperException: Failed to load or instantiate TagExtraInfo class: com.cj.rss.objVariable
Do I have a bad "path" set up somewhere? Here's my code:
<%@ taglib uri="/WEB-INF/lib/taglib.tld" prefix="c" %>
<html>
<head><title>Java Feed</title></head>
<body>
<%-- <jsp:useBean id="beanInstanceName" scope="session" class="beanPackage.BeanClassName" /> --%>
<%-- <jsp:getProperty name="beanInstanceName" property="propertyName" /> --%>
<c:setFeed url="http://www2.theserverside.com/rss/theserverside-1.0.rdf" id="A"/>
<p>Title:<c:getChannelTitle feedId="A"/>
<p>Description:<c:getChannelDescription feedId="A"/>
<c:forEachItem feedId="A">
Link:<%=itemLink%>
Title:<%=itemTitle%>
Description:<%=itemDescription%>
</c:forEachItem>
</body>
</html>
It's pretty simple code, and I made sure that the library file (jar) and .tld file were in the /WEB-INF/lib directory, off of the "context" directory or "docroot". I guess I would have gotten a different error if they weren't there.
Any thoughts as to why my server is having problems loading the object:
com.cj.rss.objVariable
It is in my rsstag.jar file. I confirmed it by opening it with WinZip. Here's the reference to it in the rssrag.tld file:
<tag>
<name>setFeed</name>
<tagclass>com.cj.rss.setFeedTag</tagclass>
<teiclass>com.cj.rss.objVariable</teiclass>
<bodycontent>JSP</bodycontent>
<info>parses rss feed</info>
Any information would be greatly appreciated.

JSP Taglibs

Hi,
I try to use a taglib and get this Exception:
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 4 in the jsp file: /Login.jsp
Generated servlet error:
C:\Programme\Apache Tomcat 4.0\work\localhost\testdemo\Login$jsp.java:59: Class org.apache.jsp.testTL not found.
testTL jspxth_mytag_test_0 = new testTL();
^
An error occurred at line: 4 in the jsp file: /Login.jsp
Generated servlet error:
C:\Programme\Apache Tomcat 4.0\work\localhost\testdemo\Login$jsp.java:59: Class org.apache.jsp.testTL not found.
testTL jspxth_mytag_test_0 = new testTL();
^
2 errors
My taglibs looks like this:
<?xml version="1.0"?>
<!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>shorttest</shortname>
     <uri></uri>
     <info>abc</info>
     <tag>
          <name>test</name>
          <tagclass>testTL</tagclass>
     </tag>
</taglib>
And web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN" "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
<web-app>
<display-name>Tag Demo</display-name>
<description>bla</description>
<taglib>
<taglib-uri>/shorttest</taglib-uri>
<taglib-location>/WEB-INF/tld/test1.tld</taglib-location>
</taglib>
</web-app>
the jsp:
<%@ taglib uri="/shorttest" prefix="mytag" %>
<html>
<body>
<mytag:test/>
</body>
</html>
I can`t find the failure.
Thanks
Hayri

Yes, change
<tagclass>testTL</tagclass>
to
<tagclass>yourPackage.testTL</tagclass> and of course recompile class with package declaration and put into package.

Jsp include tag 1.1

Hi all,
i am getting the following error if my code snippet has a <jsp:include> tag
org.apache.jasper.JasperException: Invalid jsp:include tag
i am using VAJ3.5.3 and i modified the hosts file to support jsp1.1.
But when i change to jsp1.0 the code works fine and fetching me the page contents.
Need inputs.
Regards
Ramesh Kesavanarayanan

Hi kesavramesh,
I think some time ago, you're looking for something like this
- Can I use jsp includes inside the taglib ?-
See point 1 and 2.
-- Paul
1. link:
http://www.jguru.com/faq/view.jsp?EID=115446
2. text from the link:
Normally when you call one JSP page from another you have no significant access to the result of the called JSP. So if I have
Hi, I like nice clean JSP output
<jsp:include page="gobbledegook.jsp" flush="true"/>
Doh!
When it would be much nicer to be able to do this:
<%@ taglib uri="blahblah" prefix="myTags"%>
Hi, I like nice clean JSP output
<myTags:cleanUp>
<jsp:include page="gobbledegook.jsp" flush="true"/>
</myTags:cleanUp>
Wahoo!
This can be accomplish with the tag class:
public class TakeOutTheTrashTag extends BodyTagSupport
public int doStartTag() throws JspTagException
return EVAL_BODY_TAG;
public int doAfterBody() throws JspTagException
try {
if (bodyContent != null) {
String messy = bodyContent.getString();
String clean = takeOutTheTrash(messy);
bodyContent.getEnclosingWriter().print(clean);
} catch (IOException ie) {}
return EVAL_PAGE;
public int doEndTag() throws JspTagException
return EVAL_PAGE;
private String takeOutTheTrash(String messy)
String cleanedUp = messy;
return cleanedUp;

EL or RT expressions for JSP taglibs

I have a simple question
We all know that there are two ways to implement a JSP page. either RT expressions or expression language (EL). I have done plenty of research and I am comfortable at creating custom JSP taglibs that support both RT and EL. What I want to know is which if them is used more commonly?
Its useless to right 2 seperated libs, since you can pass variables from EL to RT and vice versa, so I want to have only one tag library, but I dont know how I should implement it EL or RT.
What is used more often and why? What is the advantages of using one over the other. Thank you!!!

RT was the original way; it required scriptlets, which everyone hates.
EL is the new way; it helps eliminate scriptlets, which everyone loves.
EL is the method of choice; even moreso when JSP 2.0 is finalized, it allows them to be used more freely (not just in tags)

JSP taglib tags

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