Howdy,
Try adding a /, e.g. /index.jsp, to your welcome-file elements.  That
should make the error go away.

Please note that for tomcat 4.x, your deployment descriptor (web.xml)
must conform to the Servlet Specification v2.3 standard.  It's written
to the 2.2 standard right now, as shown by the doctype declaration near
the top of the file.

Yoav Shapira
Millennium ChemInformatics


>-----Original Message-----
>From: Inocencio Richiez [mailto:irichiez@yahoo.com]
>Sent: Tuesday, February 04, 2003 9:23 AM
>To: tomcat-user@jakarta.apache.org
>Subject: deploying a WAR file to Tomcat 4.0
>
>Hi can someone here please help???
>
> I have a WAR file that was succesfully deployed in
> WebSphere Application Server. The file now needs to
>be
> deployed in
> Tomcat apache 4.0. I copied the WAR file into the
> webapps folder. Restarted the machine and tomcat was
> able to extract
> the contents of this WAR file and build the folder
> structure neccessary. When I run the application, the
> login page comes
> up, but once I try to login, I get the following
> exception:
>
> Apache Tomcat/4.0.6 - 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
>
> java.lang.IllegalArgumentException: Path index.jsp
> does not start with a "/" character
> 	at
>
>org.apache.catalina.core.ApplicationContext.getRequestDispatch
> er(ApplicationContext.java:572)
>
> Here is an example of my web.xml file:
>
> <!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 id="WebApp"
> 	<display-nameMyApp</display-name
> 	<servlet
> 		<servlet-nameMainServlet</servlet-name
> 		<display-nameMainServlet</display-name
>
>
><servlet-classcom.store.information.config.MainServlet</servl
> et-class
> 	</servlet
> 	<servlet
> 		<servlet-nameInfoServlet</servlet-name
> 		<display-nameInfoServlet</display-name
>
>
><servlet-classcom.store.information.InfoServlet</servlet-class
> 	</servlet
> 	<servlet
> 		<servlet-nameGenerateInlineServlet</servlet-name
> 		<display-nameGenerateInlineServlet</display-name
> 		<servlet-classGenerateInlineServlet</servlet-class
> 	</servlet
> 	<servlet
> 		<servlet-nameOptionsServlet</servlet-name
> 		<display-nameOptionsServlet</display-name
>
>
><servlet-classcom.store.information.config.OptionsServlet</se
> rvlet-class
> 	</servlet
> 	<servlet-mapping
> 		<servlet-nameMainServlet</servlet-name
> 		<url-pattern/MainServlet</url-pattern
> 	</servlet-mapping
> 	<servlet-mapping
> 		<servlet-nameGenerateInlineServlet</servlet-name
> 		<url-pattern/GenerateInlineServlet</url-pattern
> 	</servlet-mapping
> 	<servlet-mapping
> 		<servlet-nameOptionsServlet</servlet-name
> 		<url-pattern/OptionsServlet</url-pattern
> 	</servlet-mapping
> 	<servlet-mapping
> 		<servlet-nameInfoServlet</servlet-name
> 		<url-pattern/InfoServlet</url-pattern
> 	</servlet-mapping
> 	<session-config
> 		<session-timeout60</session-timeout
> 	</session-config
> 	<welcome-file-list
> 		<welcome-fileindex.jsp</welcome-file
> 		<welcome-fileindex.html</welcome-file
> 		<welcome-fileindex.htm</welcome-file
> 		<welcome-filedefault.html</welcome-file
> 		<welcome-filedefault.htm</welcome-file
> 		<welcome-filedefault.jsp</welcome-file
> 	</welcome-file-list
> 	<login-config
> 		<form-login-config
> 			<form-login-page/index.jsp</form-login-page
>
> <form-error-page/jsp/en_US/error.jsp</form-error-page
> 		</form-login-config
> 	</login-config
> </web-app
>
>
> Here is a copy of my server.xml
>
> <!-- Example Server Configuration File --
> <!-- Note that component elements are nested
> corresponding to their
>      parent-child relationships with each other --
>
> <!-- A "Server" is a singleton element that
>represents
> the entire JVM,
>      which may contain one or more "Service"
> instances.  The Server
>      listens for a shutdown command on the indicated
> port.
>
>      Note:  A "Server" is not itself a "Container",
>so
> you may not
>      define subcomponents such as "Valves" or
> "Loggers" at this level.
>  --
>
> <Server port="8005" shutdown="SHUTDOWN" debug="0"
>
>
>   <!-- A "Service" is a collection of one or more
> "Connectors" that share
>        a single "Container" (and therefore the web
> applications visible
>        within that Container).  Normally, that
> Container is an "Engine",
>        but this is not required.
>
>        Note:  A "Service" is not itself a
>"Container",
> so you may not
>        define subcomponents such as "Valves" or
> "Loggers" at this level.
>    --
>
>   <!-- Define the Tomcat Stand-Alone Service --
>   <Service name="Tomcat-Standalone"
>
>     <!-- A "Connector" represents an endpoint by
>which
> requests are received
>          and responses are returned.  Each Connector
> passes requests on to the
>          associated "Container" (normally an Engine)
> for processing.
>
>          By default, a non-SSL HTTP/1.1 Connector is
> established on port 8080.
>          You can also enable an SSL HTTP/1.1
>Connector
> on port 8443 by
>          following the instructions below and
> uncommenting the second Connector
>          entry.  SSL support requires the following
> steps (see the SSL Config
>          HOWTO in the Tomcat 4.0 documentation bundle
> for more detailed
>          instructions):
>          * Download and install JSSE 1.0.2 or later,
> and put the JAR files
>            into "$JAVA_HOME/jre/lib/ext".
>          * Execute:
>              %JAVA_HOME%\bin\keytool -genkey -alias
> tomcat -keyalg RSA (Windows)
>              $JAVA_HOME/bin/keytool -genkey -alias
> tomcat -keyalg RSA  (Unix)
>            with a password value of "changeit" for
> both the certificate and
>            the keystore itself.
>
>          By default, DNS lookups are enabled when a
> web application calls
>          request.getRemoteHost().  This can have an
> adverse impact on
>          performance, so you can disable it by
>setting
> the
>          "enableLookups" attribute to "false".  When
> DNS lookups are disabled,
>          request.getRemoteHost() will return the
> String version of the
>          IP address of the remote client.
>     --
>
>     <!-- Define a non-SSL HTTP/1.1 Connector on port
> 8080 --
>     <Connector
>
>className="org.apache.catalina.connector.http.HttpConnector"
>                port="8080" minProcessors="5"
> maxProcessors="75"
>                enableLookups="true"
> redirectPort="8443"
>                acceptCount="10" debug="0"
> connectionTimeout="60000"/
>     <!-- Note : To disable connection timeouts, set
> connectionTimeout value
>      to -1 --
>
>     <!-- Define a non-SSL Coyote HTTP/1.1 Connector
>on
> port 8081 --
>     <!--
>     <Connector
> className="org.apache.coyote.tomcat4.CoyoteConnector"
>                port="8081" minProcessors="5"
> maxProcessors="75"
>                enableLookups="true"
> redirectPort="8443"
>                acceptCount="10" debug="0"
> connectionTimeout="20000"/
>     --
>
>     <!-- Define an SSL HTTP/1.1 Connector on port
>8443
> --
>     <!--
>     <Connector
>
>className="org.apache.catalina.connector.http.HttpConnector"
>                port="8443" minProcessors="5"
> maxProcessors="75"
>                enableLookups="true"
> 	       acceptCount="10" debug="0" scheme="https"
> secure="true"
>       <Factory
>
>className="org.apache.catalina.net.SSLServerSocketFactory"
>                clientAuth="false" protocol="TLS"/
>     </Connector
>     --
>
>     <!-- Define an AJP 1.3 Connector on port 8009 --
>     <Connector
> className="org.apache.ajp.tomcat4.Ajp13Connector"
>                port="8009" minProcessors="5"
> maxProcessors="75"
>                acceptCount="10" debug="0"/
>
>     <!-- Define a Proxied HTTP/1.1 Connector on port
> 8081 --
>     <!-- See proxy documentation for more information
> about using this. --
>     <!--
>     <Connector
>
>className="org.apache.catalina.connector.http.HttpConnector"
>                port="8082" minProcessors="5"
> maxProcessors="75"
>                enableLookups="true"
>                acceptCount="10" debug="0"
> connectionTimeout="60000"
>                proxyPort="80"/
>     --
>
>     <!-- Define a non-SSL HTTP/1.0 Test Connector on
> port 8082 --
>     <!--
>     <Connector
>
>className="org.apache.catalina.connector.http10.HttpConnector"
>                port="8083" minProcessors="5"
> maxProcessors="75"
>                enableLookups="true"
> redirectPort="8443"
>                acceptCount="10" debug="0"/
>     --
>
>     <!-- An Engine represents the entry point (within
> Catalina) that processes
>          every request.  The Engine implementation
>for
> Tomcat stand alone
>          analyzes the HTTP headers included with the
> request, and passes them
>          on to the appropriate Host (virtual host).
> --
>
>     <!-- Define the top level container in our
> container hierarchy --
>     <Engine name="Standalone" defaultHost="localhost"
> debug="0"
>
>       <!-- The request dumper valve dumps useful
> debugging information about
>            the request headers and cookies that were
> received, and the response
>            headers and cookies that were sent, for
>all
> requests received by
>            this instance of Tomcat.  If you care only
> about requests to a
>            particular virtual host, or a particular
> application, nest this
>            element inside the corresponding <Host or
> <Context entry instead.
>
>            For a similar mechanism that is portable
>to
> all Servlet 2.3
>            containers, check out the
> "RequestDumperFilter" Filter in the
>            example application (the source for this
> filter may be found in
>
>
>"$CATALINA_HOME/webapps/examples/WEB-INF/classes/filters").
>
>            Request dumping is disabled by default.
> Uncomment the following
>            element to enable it. --
>       <!--
>       <Valve
>
>className="org.apache.catalina.valves.RequestDumperValve"/
>       --
>
>       <!-- Global logger unless overridden at lower
> levels --
>       <Logger
> className="org.apache.catalina.logger.FileLogger"
>               prefix="catalina_log." suffix=".txt"
>               timestamp="true"/
>
>       <!-- Because this Realm is here, an instance
> will be shared globally --
>
>       <Realm
> className="org.apache.catalina.realm.MemoryRealm" /
>
>       <!-- Replace the above Realm with one of the
> following to get a Realm
>            stored in a database and accessed via JDBC
> --
>
>       <!--
>       <Realm
> className="org.apache.catalina.realm.JDBCRealm"
> debug="99"
>              driverName="org.gjt.mm.mysql.Driver"
>
>
>connectionURL="jdbc:mysql://localhost/authority?user=test;pass
> word=test"
>               userTable="users"
> userNameCol="user_name" userCredCol="user_pass"
>           userRoleTable="user_roles"
> roleNameCol="role_name" /
>       --
>
>       <!--
>       <Realm
> className="org.apache.catalina.realm.JDBCRealm"
> debug="99"
>
> driverName="oracle.jdbc.driver.OracleDriver"
>
>
>connectionURL="jdbc:oracle:thin:@ntserver:1521:ORCL?user=scott
> ;password=tiger"
>               userTable="users"
> userNameCol="user_name" userCredCol="user_pass"
>           userRoleTable="user_roles"
> roleNameCol="role_name" /
>       --
>
>       <!--
>       <Realm
> className="org.apache.catalina.realm.JDBCRealm"
> debug="99"
>
>driverName="sun.jdbc.odbc.JdbcOdbcDriver"
>           connectionURL="jdbc:odbc:CATALINA"
>               userTable="users"
> userNameCol="user_name" userCredCol="user_pass"
>           userRoleTable="user_roles"
> roleNameCol="role_name" /
>       --
>
>       <!-- Define the default virtual host --
>       <Host name="localhost" debug="0"
> appBase="webapps" unpackWARs="true"
>
>         <!-- Normally, users must authenticate
> themselves to each web app
>              individually.  Uncomment the following
> entry if you would like
>              a user to be authenticated the first
>time
> they encounter a
>              resource protected by a security
> constraint, and then have that
>              user identity maintained across *all*
>web
> applications contained
>              in this virtual host. --
>         <!--
>         <Valve
>
>className="org.apache.catalina.authenticator.SingleSignOn"
>                    debug="0"/
>         --
>
>         <!-- Access log processes all requests for
> this virtual host.  By
>              default, log files are created in the
> "logs" directory relative to
>              $CATALINA_HOME.  If you wish, you can
> specify a different
>              directory with the "directory"
>attribute.
>  Specify either a relative
>              (to $CATALINA_HOME) or absolute path to
> the desired directory.
>         --
>         <Valve
> className="org.apache.catalina.valves.AccessLogValve"
>                  directory="logs"
> prefix="localhost_access_log." suffix=".txt"
>                  pattern="common"/
>
>         <!-- Logger shared by all Contexts related to
> this virtual host.  By
>              default (when using FileLogger), log
> files are created in the "logs"
>              directory relative to $CATALINA_HOME.
>If
> you wish, you can specify
>              a different directory with the
> "directory" attribute.  Specify either a
>              relative (to $CATALINA_HOME) or absolute
> path to the desired
>              directory.--
>         <Logger
> className="org.apache.catalina.logger.FileLogger"
>                  directory="logs"
> prefix="localhost_log." suffix=".txt"
> 	        timestamp="true"/
>
>         <!-- Define properties for each web
> application.  This is only needed
>              if you want to set non-default
> properties, or have web application
>              document roots in places other than the
> virtual host's appBase
>              directory.  --
>
>         <!-- Tomcat Root Context --
>         <!--
>           <Context path="" docBase="ROOT" debug="0"/
>         --
>
>
>
>
> <!-- PLEASE NOTE THIS ENTRY  --
> 	<Context path="/MyApp" docBase="MyStore" debug="0"
> reloadable="true" crossContext="true"
>
>
>
>
>
>         <!-- Tomcat Manager Context --
>         <Context path="/manager" docBase="manager"
> debug="0" privileged="true"/
>
>         <!-- Tomcat Examples Context
>         <Context path="/examples" docBase="examples"
> debug="0" reloadable="true" crossContext="true"
>           <Logger
> className="org.apache.catalina.logger.FileLogger"
> prefix="localhost_examples_log." suffix=".txt"
> timestamp="true"/
>           <Ejb   name="ejb/EmplRecord" type="Entity"
> home="com.wombat.empl.EmployeeRecordHome"
> remote="com.wombat.empl.EmployeeRecord"/
> 	--
>
> 	<!-- PersistentManager: Uncomment the section below
> to test Persistent Sessions.
>
>                saveOnRestart: If true, all active
> sessions will be saved
>                  to the Store when Catalina is
> shutdown, regardless of
>                  other settings. All Sessions found
>in
> the Store will be
>                  loaded on startup. Sessions past
> their expiration are
>                  ignored in both cases.
>                maxActiveSessions: If 0 or greater,
> having too many active
>                  sessions will result in some being
> swapped out. minIdleSwap
>                  limits this. -1 means unlimited
> sessions are allowed.
>                  0 means sessions will almost always
> be swapped out after
>                  use - this will be noticeably slow
> for your users.
>                minIdleSwap: Sessions must be idle for
> at least this long
>                  (in seconds) before they will be
> swapped out due to
>                maxActiveSessions. This avoids
> thrashing when the site is
>                  highly active. -1 or 0 means there
>is
> no minimum - sessions
>                  can be swapped out at any time.
>                maxIdleSwap: Sessions will be swapped
> out if idle for this
>                  long (in seconds). If minIdleSwap is
> higher, then it will
>                  override this. This isn't exact: it
> is checked periodically.
>                  -1 means sessions won't be swapped
> out for this reason,
>                  although they may be swapped out for
> maxActiveSessions.
>                  If set to = 0, guarantees that all
> sessions found in the
>                  Store will be loaded on startup.
>                maxIdleBackup: Sessions will be backed
> up (saved to the Store,
>                  but left in active memory) if idle
> for this long (in seconds),
>                  and all sessions found in the Store
> will be loaded on startup.
>                  If set to -1 sessions will not be
> backed up, 0 means they
>                  should be backed up shortly after
> being used.
>
>                To clear sessions from the Store, set
> maxActiveSessions, maxIdleSwap,
>                and minIdleBackup all to -1,
> saveOnRestart to false, then restart
>                Catalina.
>           --
> 		  <!--
>           <Manager
>
>className="org.apache.catalina.session.PersistentManager"
>               debug="0"
>               saveOnRestart="true"
>               maxActiveSessions="-1"
>               minIdleSwap="-1"
>               maxIdleSwap="-1"
>               maxIdleBackup="-1"
>                 <Store
> className="org.apache.catalina.session.FileStore"/
>           </Manager
> 		  --
>           <Environment name="maxExemptions"
> type="java.lang.Integer"
>                       value="15"/
>           <Parameter name="context.param.name"
> value="context.param.value"
>                      override="false"/
>           <Resource name="jdbc/EmployeeAppDb"
> auth="SERVLET"
>                     type="javax.sql.DataSource"/
>           <ResourceParams name="jdbc/EmployeeAppDb"
>
> <parameter<nameuser</name<valuesa</value</parameter
>
> <parameter<namepassword</name<value</value</parameter
>             <parameter<namedriverClassName</name
>
> <valueorg.hsql.jdbcDriver</value</parameter
>             <parameter<namedriverName</name
>
> <valuejdbc:HypersonicSQL:database</value</parameter
>           </ResourceParams
>           <Resource name="mail/Session"
> auth="Container"
>                     type="javax.mail.Session"/
>           <ResourceParams name="mail/Session"
>             <parameter
>               <namemail.smtp.host</name
>               <valuelocalhost</value
>             </parameter
>           </ResourceParams
>         </Context
>
>       </Host
>
>     </Engine
>
>   </Service
>
>   <!-- The MOD_WEBAPP connector is used to connect
> Apache 1.3 with Tomcat 4.0
>        as its servlet container. Please read the
> README.txt file coming with
>        the WebApp Module distribution on how to build
> it.
>        (Or check out the
> "jakarta-tomcat-connectors/webapp" CVS repository)
>
>        To configure the Apache side, you must ensure
> that you have the
>        "ServerName" and "Port" directives defined in
> "httpd.conf".  Then,
>        lines like these to the bottom of your
> "httpd.conf" file:
>
>          LoadModule webapp_module
> libexec/mod_webapp.so
>          WebAppConnection warpConnection warp
> localhost:8008
>          WebAppDeploy examples warpConnection
> /examples/
>
>        The next time you restart Apache (after
> restarting Tomcat, if needed)
>        the connection will be established, and all
> applications you make
>        visible via "WebAppDeploy" directives can be
> accessed through Apache.
>   --
>
>   <!-- Define an Apache-Connector Service --
>   <Service name="Tomcat-Apache"
>
>     <Connector
>
>className="org.apache.catalina.connector.warp.WarpConnector"
>      port="8008" minProcessors="5" maxProcessors="75"
>      enableLookups="true" appBase="webapps"
>      acceptCount="10" debug="0"/
>
>     <!-- Replace "localhost" with what your Apache
> "ServerName" is set to --
>     <Engine
>
>className="org.apache.catalina.connector.warp.WarpEngine"
>      name="Apache" debug="0"
>
>       <!-- Global logger unless overridden at lower
> levels --
>       <Logger
> className="org.apache.catalina.logger.FileLogger"
>               prefix="apache_log." suffix=".txt"
>               timestamp="true"/
>
>       <!-- Because this Realm is here, an instance
> will be shared globally --
>       <Realm
> className="org.apache.catalina.realm.MemoryRealm" /
>
>     </Engine
>
>   </Service
>
> </Server
>
>
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