Javabeans problem with Tomcat

Hi!
I�m using Tomcat 5.5 with jdk5.0. I�m trying to start using beans but can�t get my jsp-pages to read the beans. I have compiled the bean and keep the .class file in
C:\Program Files\Apache Software Foundation\Tomcat 5.5\webapps\ROOT\WEB-INF\classes\Beans\test.class
I keep the .jsp file in
C:\Program Files\Apache Software Foundation\Tomcat 5.5\webapps\ROOT\kise\test.jsp
It seems like the bean is not found. I�m thinking that I might need to set some paths but I don�t know which ones or how to set them.
When trying to open the .jsp file that refers to the bean I get an internal server error message:
org.apache.jasper.JasperException: /kise/test.jsp(8,6) The value for the useBean class attribute Beans.test is invalid.
     org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:39)
     org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:405)
     org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:146)
     org.apache.jasper.compiler.Generator$GenerateVisitor.visit(Generator.java:1223)
     org.apache.jasper.compiler.Node$UseBean.accept(Node.java:1116)
     org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
     org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2213)
     org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2219)
     org.apache.jasper.compiler.Node$Root.accept(Node.java:456)
     org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
     org.apache.jasper.compiler.Generator.generate(Generator.java:3268)
     org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:189)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:286)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:267)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:255)
     org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:556)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:296)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:245)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
Does anyone know what might be wrong? I would be very grateful for some help, I have been working on solving this for a day now.... /Malin

Ok, here is the code for the bean:
package Beans;
import java.io.*;
import java.beans.*;
public class test implements java.io.Serializable {
     public String name;
     public String getName() {
          return name;
     public void setName(String value) {
          name=value;
and here is the jsp-code:
<HTML>
<HEAD><TITLE>Test</TITLE>
<BODY>
<%@ page language="java" %>
<%@ page import="Beans.test" %>
<jsp:useBean id="malin" scope="session" class="Beans.test" />
<jsp.setProperty name="malin" property="name" value="korv" />
<jsp:getProperty name="malin" property="name" />
</BODY>
</HTML>
Thanks for helping. /Malin

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cp=C:\jakarta-tomcat-4.1.31\common\lib\ant.jar
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cp=C:\jakarta-tomcat-4.1.31\common\lib\commons-dbcp-1.1.jar
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cp=C:\jakarta-tomcat-4.1.31\common\lib\commons-pool-1.1.jar
cp=C:\jakarta-tomcat-4.1.31\common\lib\jasper-compiler.jar
cp=C:\jakarta-tomcat-4.1.31\common\lib\jasper-runtime.jar
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cp=C:\jakarta-tomcat-4.1.31\common\lib\naming-common.jar
cp=C:\jakarta-tomcat-4.1.31\common\lib\naming-factory.jar
cp=C:\jakarta-tomcat-4.1.31\common\lib\naming-resources.jar
cp=C:\jakarta-tomcat-4.1.31\common\lib\servlet.jar
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srcDir=C:\jakarta-tomcat-4.1.31\work\Standalone\localhost\_
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     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
     at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:152)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
     at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
     at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
     at java.lang.Thread.run(Thread.java:479)
Here are my system settings :
Eclipse 2.1.3
plugin : tomcatPluginV21, lomboz.213
Jakarta-tomcat-4.1.31
JAVA_HOME      : C:\jdk1.3.1_15
CATALINA_HOME : C:\jakarta-tomcat-4.1.31
Here are my Eclipse settings :
http://server2.uploadit.org/files/marvelousgame-01.JPG
http://server3.uploadit.org/files/marvelousgame-02.JPG
http://server2.uploadit.org/files/marvelousgame-03.JPG
http://server3.uploadit.org/files/marvelousgame-04.JPG
http://server2.uploadit.org/files/marvelousgame-05.JPG
http://server3.uploadit.org/files/marvelousgame-06.JPG
thx!!!

I would suggest updating your software to the latest versions - java 1.4.2 or higher, tomcat 5 or higher, Eclipse 3. That should fix any incompatibilities you are experiencing.
As to your problem, it seems the tomcat you are trying to run from Eclipse wants a newer Java version (1.4.2 most likely).

Problem with Tomcat 5.0

Hi there,
I have a .java file inside \WEB-INF\classes\ directory. This .java file has a "public static void main" method that calls al the other methods in the class.
I want to know if its possible for me to create an JSP file to call this .java file. If so how can i do it?
Thanks!!

NerdVix wrote:
Hi there,
I have a .java file inside \WEB-INF\classes\ directory. Wrong. .java files do you no good in that directory. Only .class files belong there.
This .java file has a "public static void main" method that calls al the other methods in the class.Fine - for testing on a command line.
I want to know if its possible for me to create an JSP file to call this .java file. If so how can i do it?What part don't you understand? Writing JSPs? Calling methods? What is a person so ignorant doing with Tomcat anyway?
It's possible to call main, but not a good idea.
%

DB2 Configuration problem with Tomcat-4.0.3

When I trying to open connection to my DB2 database in tomcat -4.0.3,
I have put db2java.jar in /usr/local/jakartha-tomcat-4.03/common/lib directory
when I am trying to connect Database through my servlet getting expections
java.lang.NullPointerException: at DataSource ds = (DataSource)envContext.lookup("jdbc/SmsDBDS");
here is my dbconnection class
package com.ebizon.util.jdbc;
import java.sql.*;
import java.util.*;
import javax.naming.*;
import javax.sql.*;
public class DBUtil {
/* Ebizon DB Connection for Tomcat */
public static Connection getEbizDBConnection() throws NamingException, SQLException {
Connection conn = null;
try {
InitialContext initCtx = new InitialContext();
Context envContext = (Context)initContext.lookup("java:/comp/env");
DataSource ds = (DataSource)envContext.lookup("jdbc/SmsDBDS");
conn = ds.getConnection();
} catch (NamingException ne) {
throw ne;
} catch (SQLException se) {
throw se;
return conn;
And my resource definition in server.xml (/usr/local/jakartha-tomcat-4.0.3/conf/server.xml)
<Context path="/DBTest" docBase="DBTest"
debug="5" reloadable="true" crossContext="true">
<Logger className="org.apache.catalina.logger.FileLogger"
prefix="localhost_DBTest_log." suffix=".txt"
timestamp="true"/>
<Resource name="jdbc/SmsDBDS"
auth="Container"
type="javax.sql.DataSource"/>
<ResourceParams name="jdbc/SmsDBDS">
<parameter>
<name>factory</name>
<value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
</parameter>
<parameter>
<name>maxActive</name>
<value>100</value>
</parameter>
<parameter>
<name>maxIdle</name>
<value>30</value>
</parameter>
<parameter>
<name>maxWait</name>
<value>10000</value>
</parameter>

<parameter>
<name>username</name>
<value>smsdb</value>
</parameter>
<parameter>
<name>password</name>
<value>smsdb</value>
</parameter>

<parameter>
<name>driverClassName</name>
<value>COM.ibm.db2.jdbc.app.DB2Driver</value>
</parameter>
<parameter>
<name>url</name>
<value>jdbc:db2:smsdb</value>
</parameter>
</ResourceParams>
</Context>
this is my Web Application descriptor /WEB-INF/web.xml
<resource-ref>
<description>
Resource reference to a factory for java.sql.Connection
instances that may be used for talking to a particular
database that is configured in the server.xml file.
</description>
<res-ref-name>
jdbc/EmployeDB
</res-ref-name>
<res-type>
javax.sql.DataSource
</res-type>
<res-auth>
Container
</res-auth>
</resource-ref>
Please look at once above , Do i missing any thing?
Anyhelp is greatly appreciate
Many thanks in advance
With Regards
Madhu Reddy

Hi,
I have same problem. But unfortunately there does not exist a solution.
You can read the explanation of this topic at http://jakarta.apache.org/tomcat/tomcat-5.0-doc/jndi-datasource-examples-howto.html#Non%20DBCP%20Solutions
Non DBCP Solutions. I understand Tomcat supports only MySQL, PostgreSQL, and Oracle 8i but not DB2.
DataSource ds = (DataSource)envContext.lookup("jdbc/SmsDBDS");
Up to now everything is fine, ds is not null, but inside ds (password, url, username...) all of them are null
So when you execute conn = ds.getConnection(); there will be exception.
If you find any solution please inform me.
[email protected]

Problem with TOMCAT again !

I�m trying to deploy to TOMCAT 5028. with .war that has no access to database no problem it works fine.
but whem my .war has to access a database i got:
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: javax.faces.FacesException: Can't instantiate class: 'test.Page1'.. class test.Page1 : javax.faces.FacesException: org.apache.commons.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'
     javax.faces.webapp.FacesServlet.service(FacesServlet.java:209)
root cause
javax.faces.FacesException: javax.faces.FacesException: Can't instantiate class: 'test.Page1'.. class test.Page1 : javax.faces.FacesException: org.apache.commons.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'
     com.sun.faces.application.ApplicationAssociate.createAndMaybeStoreManagedBeans(ApplicationAssociate.java:308)
     com.sun.faces.el.VariableResolverImpl.resolveVariable(VariableResolverImpl.java:78)
     com.sun.faces.el.impl.NamedValue.evaluate(NamedValue.java:125)
     com.sun.faces.el.impl.ExpressionEvaluatorImpl.evaluate(ExpressionEvaluatorImpl.java:243)
     com.sun.faces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:173)
     com.sun.faces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:154)
     com.sun.jsfcl.app.ViewHandlerImpl.setupPageBean(ViewHandlerImpl.java:271)
     com.sun.jsfcl.app.ViewHandlerImpl.createView(ViewHandlerImpl.java:126)
     com.sun.faces.lifecycle.RestoreViewPhase.execute(RestoreViewPhase.java:164)
     com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:221)
     com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:90)
     javax.faces.webapp.FacesServlet.service(FacesServlet.java:197)
note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.
I deploy the .war to application server and it works just fine.
and i configure the tomcat with:
JNDI Name: jdbc/test
Data Source URL: jdbc:mysql://192.168.0.2:3306/test
JDBC Driver Class: org.gjt.mm.mysql.
User Name: root
Password: admin
Max. Active Connections: 20
Max. Idle Connections: 20
Max. Wait for Connection: 5000
the only thing different in application server is the the Jdbc Driver Class.
And I am using Creator update 7 to generate the .war
am i missing something ????
Regards
Marlos Rodrigues

I found a simple way to deploy on Tomcat.
*** Copy standard.jar, jstl.jar and mysql-connector-xxx.jar (if you are using mysql otherwise the drivers jar for the DB you are using).
*** Edit the Tomcat conf/context.xml config file and add a WatchedResource :
<WatchedResource>META-INF/context.xml</WatchedResource>
*** Add your context.xml to META-INF of your war :
<Context path="/DBTest" docBase="DBTest"
        debug="5" reloadable="true" crossContext="true">
<Resource name="jdbc/TestDB" auth="Container" type="javax.sql.DataSource"
               maxActive="100" maxIdle="30" maxWait="10000"
               username="javauser" password="javadude" driverClassName="com.mysql.jdbc.Driver"
               url="jdbc:mysql://localhost:3306/javatest?autoReconnect=true"/>
</Context>This will create a config file in conf/Catalina/localhost with the context path name, so in this case DBTest.xml
Hope that helps! That's how I got it working...

Migration problems with Tomcat 4.1.10. Please help.

Product:           Java Web Application
Operating system:     Redhat Linux 7.3
Web Server:          Apache 1.3.x
Application server:     Tomcat 4.1.10
Database server:     MySQL 3.23.x
Java Architecture:     JSP (presentation) + Java Bean (Business logic)
JDK version:          1.3.1_04
Hi,
     When we tried to migrate our application from Tomcat 4.0.4 to Tomcat 4.1.10, we found that the relative path references like ../xyz/ab.jsp are not properly interpreted by Netscape and the url seen on the address bar is something like this (http://www.sww.com/../xyz/ab.jsp. Also dynamic jsp forwarding support seems to have changed. While forwarding, the dynamic parameters attached are automatically url encoded. We have tested our application on Tomcat 4.0.4, there were no such issues. Since we have used these sort of things in many places in our application it will be difficult for us to change in all those places. Can anybody tell us what we can do about it?
thanks in advance,
Srikanth. S.

Hi,
http://www.xyz.com/swiz/test.jsp:
<%
response.sendRedirect("../sebase/common_login.jsp");
%>
When I run http://www.xyz.com/swiz/test.jsp with the above code, the url is displayed http://www.xyz.com/swiz/../sebase/common_login.jsp in Netscape address bar when the application is run on tomcat 4.1.10. With Internet explorer and opera, it reads http://www.xyz.com/sebase/common_login.jsp. But on Tomcat 4.0.4, there is no problem even with Netscape. Since we are tracking the urls in many places in our application, we are having problem because of the above said type of url interpretation.
thanks in advance,
Srikanth. S.

J2SE 1.4 Logger configuration problems with Tomcat 4.0

I'm using Tomcat 4.0 as a servlet container and I'm trying out the new J2SE 1.4 logging API.
Its working fine with the standard settings, which sets the level to INFO on the console handler.
I would like to set the level to FINER to show some debugging info, but can't seem to get it going.
I have tried setting the default level in my %JAVA_HOME%\jre\lib\logging.properties file, but it doesn't want to display log records of level FINER.
I have also change the console handler to FINER by setting java.util.logging.ConsoleHandler.level = FINER
I have also specified the config file parameter to point to a config file explicitly using the -Djava.util.logging.config.file=%CATALINA_HOME%\conf\logging.properties parameter in the catalina.bat script.
Anyone got this working?
--Kim

Solved it. Isn't that always the way, you get frustrated enough to post a message, then you solve it 5 minutes later.
It was a simple problem of the higher level overriding the lower levels.
--Kim

Problem with tomcat 5 clustering

Hi all,
I am having one problem while performing tomcat clustering..
its showing one exception while starting the tomcat... i would be grateful if somebody help me out....
Feb 13, 2006 9:44:41 AM org.apache.catalina.cluster.tcp.SimpleTcpCluster start
INFO: Cluster is about to start
Feb 13, 2006 9:44:41 AM org.apache.catalina.cluster.tcp.SimpleTcpCluster start
INFO: Sleeping for 2000 secs to establish cluster membership
Feb 13, 2006 9:44:41 AM org.apache.catalina.cluster.tcp.SimpleTcpCluster start
SEVERE: Unable to start cluster.
java.lang.NullPointerException
at org.apache.catalina.loader.StandardClassLoader.loadClass(StandardClas
sLoader.java:804)
at org.apache.catalina.loader.StandardClassLoader.loadClass(StandardClas
sLoader.java:756)
at org.apache.catalina.cluster.MembershipFactory.getMembershipService(Me
mbershipFactory.java:93)
at org.apache.catalina.cluster.tcp.SimpleTcpCluster.start(SimpleTcpClust
er.java:517)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1115)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:832)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1125)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:518
at org.apache.catalina.core.StandardService.start(StandardService.java:5
19)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:234
5)
at org.apache.catalina.startup.Catalina.start(Catalina.java:598)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:297)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:398)
Feb 13, 2006 9:44:41 AM org.apache.catalina.core.StandardHost getDeployer
INFO: Create Host deployer for direct deployment ( non-jmx )
Feb 13, 2006 9:44:41 AM org.apache.catalina.core.StandardHostDeployer install
INFO: Processing Context configuration file URL file:D:\tomcat50\conf\Catalina\l
ocalhost\admin.xml
Feb 13, 2006 9:44:42 AM org.apache.struts.util.PropertyMessageResources <init>
thanks and regards

java.lang.NoSuchMethodError: org.apache.naming.resources.ProxyDirContext.lookupCache(Ljava/lang/String;)Lorg/apache/naming/resources/CacheEntry; org.apache.catalina.servlets.DefaultServlet.serveResource(DefaultServlet.java:663)
Looks to me like you're running with a mix-n-match version of classes. The serveResource method is expecting that you have the correct version of the org.apache.naming.resources.ProxyDirContext class which has that lookupCache method with that signature, but it is not there. I don't know how to tell you to fix your installation, but it is goofed up.

Javabeans problem with Tomcat

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