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From Pid <...@pidster.com>
Subject Re: Tomcat 5.5.28 Class loading issue
Date Tue, 26 Jan 2010 23:54:12 GMT
On 26/01/2010 18:12, ssmith wrote:
>
> Sorry, new to Nabble.
>
> I am defining a servlet filter.
>
> I tried to use the existing wars built for Tomcat 5.0.28, but they would not
> deploy at all.  So, yes, I rebuilt them for Tomcat 5.5.28.

You should rebuild, especially if you are compiling JSPs.

> Yes, I have a servlet-api.jar in the WEB-INF/lib/ and tomcat/common/lib
> directories.

That'll be a problem.  Don't put it in WEB-INF/lib.

> Eclipse (really MyEclipse) automatically builds the war with
> the jar, based on the project build path.  I removed the servlet-api.jar
> from the WEB-INF/lib and started the server again---got the following error:
>
> SEVERE: Exception starting filter sitemesh
> java.lang.NoClassDefFoundError: javax/servlet/Filter
> 	at java.lang.ClassLoader.defineClass1(Native Method)

Tomcat supplies all of the servlet & JSPs jars, you don't need to add them.

> With the servlet-api.jar in WEB-INF/lib/ I get the following error--which is
> my original error that I posted:
>
> SEVERE: Exception starting filter sitemesh
> java.lang.ClassCastException:
> com.opensymphony.module.sitemesh.filter.PageFilter

As above, this is incorrect and will cause problems.

> I listed jasper.jar as being an issue.

Why?  If it's also duplicated in WEB-INF, then it should not be.

> It was naming-*.jars packaged with Tomcat 5.5.28 that was an issue.

Again, why.  No duplication allowed as above.

> Also, I had a references to older jars
> (such as jstl.jar) in my project--Tomcat 5.5.28 uses newer jars for several
> things.

Tomcat 5.5 doesn't know JSTL exists, you must supply it if you are using it.

Classes should only exist in one place in the classloader tree.  You may 
not duplicate any class in WEB-INF that is supplied with Tomcat, in 
tomcat/lib.

> Yes, the class definitions in the web.xml are correct....as they are when it
> runs on Tomcat 5.0.28.
>
> I orginally stated that the WikiUrlSessionIdFilter was a direct plug in
> class.  That was not correct--it is referenced and used within our
> agriStatsUtilities.jar. The sitemesh class is a direct plug in class.
> Following is the web.xml:

You might consider (backing up, then) removing all of the comments from 
your active server.xml.  Much easier to read.


p


> <?xml version="1.0" encoding="UTF-8"?>
> <web-app xmlns="http://java.sun.com/xml/ns/j2ee"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.4"
> xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
> http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
>    <filter>
>       <filter-name>wikiUrlSessionIdFilter</filter-name>
>
> <filter-class>com.agristats.agriStatsUtilities.util.WikiUrlSessionIdFilter</filter-class>
>    </filter>
>    <filter-mapping>
>       <filter-name>wikiUrlSessionIdFilter</filter-name>
>       <url-pattern>/*</url-pattern>
>    </filter-mapping>
>    <filter-mapping>
>       <filter-name>wikiUrlSessionIdFilter</filter-name>
>       <url-pattern>*.do</url-pattern>
>    </filter-mapping>
>    <filter-mapping>
>       <filter-name>wikiUrlSessionIdFilter</filter-name>
>       <url-pattern>/employeeUI/*</url-pattern>
>    </filter-mapping>
>    <filter-mapping>
>       <filter-name>wikiUrlSessionIdFilter</filter-name>
>       <url-pattern>/partyRoleUI/*</url-pattern>
>    </filter-mapping>
>    <filter-mapping>
>       <filter-name>wikiUrlSessionIdFilter</filter-name>
>       <url-pattern>/agriStatsMainUI/*</url-pattern>
>    </filter-mapping>
>    <filter-mapping>
>       <filter-name>wikiUrlSessionIdFilter</filter-name>
>       <url-pattern>/agriStatsStandardLayoutUI/*</url-pattern>
>    </filter-mapping>
>    <filter>
>      <filter-name>sitemesh</filter-name>
>
> <filter-class>com.opensymphony.module.sitemesh.filter.PageFilter</filter-class>
>    </filter>
>    <filter-mapping>
>      <filter-name>sitemesh</filter-name>
>      <url-pattern>/*</url-pattern>
>    </filter-mapping>
>    <servlet>
>      <servlet-name>action</servlet-name>
>      <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
>      <init-param>
>        <param-name>config</param-name>
>        <param-value>/WEB-INF/struts-config.xml</param-value>
>      </init-param>
>      <init-param>
>        <param-name>debug</param-name>
>        <param-value>3</param-value>
>      </init-param>
>      <init-param>
>        <param-name>detail</param-name>
>        <param-value>3</param-value>
>      </init-param>
>      <load-on-startup>0</load-on-startup>
>    </servlet>
>    <servlet>
>      <servlet-name>action_tmp</servlet-name>
>      <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
>      <init-param>
>        <param-name>config</param-name>
>        <param-value>/WEB-INF/struts-config.xml</param-value>
>      </init-param>
>      <init-param>
>        <param-name>debug</param-name>
>        <param-value>3</param-value>
>      </init-param>
>      <init-param>
>        <param-name>detail</param-name>
>        <param-value>3</param-value>
>      </init-param>
>      <load-on-startup>0</load-on-startup>
>    </servlet>
>    <servlet-mapping>
>      <servlet-name>action</servlet-name>
>      <url-pattern>*.do</url-pattern>
>    </servlet-mapping>
>    <servlet>
>      <servlet-name>JUnitEETestServlet</servlet-name>
>      <servlet-class>org.junitee.servlet.JUnitEEServlet</servlet-class>
>    </servlet>
>    <servlet-mapping>
>      <servlet-name>JUnitEETestServlet</servlet-name>
>      <url-pattern>/TestServlet/*</url-pattern>
>    </servlet-mapping>
>    <session-config>
>      <session-timeout>60</session-timeout>
>    </session-config>
> </web-app>
>
>
> And below is the content of the server.xml---pretty much standard as
> provided by Tomcat, except for the definition for the email resource.  I
> also modified the standard context.xml to include a DefaultContext for our
> email server (I did not provide contents of context.xml--but can if you need
> it).  These modifications existed in the xml files for Tomcat 5.0.28.
>
> <?xml version="1.0" encoding="UTF-8"?>
> <!--
>    Licensed to the Apache Software Foundation (ASF) under one or more
>    contributor license agreements.  See the NOTICE file distributed with
>    this work for additional information regarding copyright ownership.
>    The ASF licenses this file to You under the Apache License, Version 2.0
>    (the "License"); you may not use this file except in compliance with
>    the License.  You may obtain a copy of the License at
>
>        http://www.apache.org/licenses/LICENSE-2.0
>
>    Unless required by applicable law or agreed to in writing, software
>    distributed under the License is distributed on an "AS IS" BASIS,
>    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
>    See the License for the specific language governing permissions and
>    limitations under the License.
> -->
> <!-- 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">
>
>    <!-- Comment these entries out to disable JMX MBeans support used for the
>         administration web application -->
>    <Listener className="org.apache.catalina.core.AprLifecycleListener" />
>    <Listener className="org.apache.catalina.mbeans.ServerLifecycleListener"
> />
>    <Listener
> className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
>    <Listener
> className="org.apache.catalina.storeconfig.StoreConfigLifecycleListener"/>
>
>    <!-- Global JNDI resources -->
>    <GlobalNamingResources>
>
>      <!-- Test entry for demonstration purposes -->
>      <Environment name="simpleValue" type="java.lang.Integer" value="30"/>
>
>       <!-- 5.5 email factory for JavaMail -->
>       <Resource name="mail/Session" auth="Container"
>           type="javax.mail.Session"
>           description="JavaMail email session"
>           mail.smtp.host="as1.agristats.local" />
>
>      <!-- Editable user database that can also be used by
>           UserDatabaseRealm to authenticate users -->
>      <Resource name="UserDatabase" auth="Container"
>                type="org.apache.catalina.UserDatabase"
>         description="User database that can be updated and saved"
>             factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
>            pathname="conf/tomcat-users.xml" />
>
>    </GlobalNamingResources>
>
>    <!-- 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="Catalina">
>
>      <!-- 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 5 documentation bundle for more detailed
>           instructions):
>           * If your JDK version 1.3 or prior, 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 port="8080" maxHttpHeaderSize="8192"
>                 maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
>                 enableLookups="false" redirectPort="8443" acceptCount="100"
>                 connectionTimeout="20000" disableUploadTimeout="true" />
>      <!-- Note : To disable connection timeouts, set connectionTimeout value
>       to 0 -->
> 	
> 	<!-- Note : To use gzip compression you could set the following properties
> :
> 	
> 			   compression="on"
> 			   compressionMinSize="2048"
> 			   noCompressionUserAgents="gozilla, traviata"
> 			   compressableMimeType="text/html,text/xml"
> 	-->
>
>      <!-- Define a SSL HTTP/1.1 Connector on port 8443 -->
>      <!--
>      <Connector port="8443" maxHttpHeaderSize="8192"
>                 maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
>                 enableLookups="false" disableUploadTimeout="true"
>                 acceptCount="100" scheme="https" secure="true"
>                 clientAuth="false" sslProtocol="TLS" />
>      -->
>
>      <!-- Define an AJP 1.3 Connector on port 8009 -->
>      <Connector port="8009"
>                 enableLookups="false" redirectPort="8443" protocol="AJP/1.3"
> />
>
>      <!-- Define a Proxied HTTP/1.1 Connector on port 8082 -->
>      <!-- See proxy documentation for more information about using this. -->
>      <!--
>      <Connector port="8082"
>                 maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
>                 enableLookups="false" acceptCount="100"
> connectionTimeout="20000"
>                 proxyPort="80" disableUploadTimeout="true" />
>      -->
>
>      <!-- 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). -->
>
>      <!-- You should set jvmRoute to support load-balancing via AJP ie :
>      <Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1">
>      -->
>
>      <!-- Define the top level container in our container hierarchy -->
>      <Engine name="Catalina" defaultHost="localhost">
>
>        <!-- 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 2.4
>             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").
>
>             Note that this Valve uses the platform's default character
> encoding.
>             This may cause problems for developers in another encoding, e.g.
>             UTF-8.  Use the RequestDumperFilter instead.
>
>             Also note that enabling this Valve will write a ton of stuff to
> your
>             logs.  They are likely to grow quite large.  This extensive log
> writing
>             will definitely slow down your server.
>
>             Request dumping is disabled by default.  Uncomment the following
>             element to enable it. -->
>        <!--
>        <Valve className="org.apache.catalina.valves.RequestDumperValve"/>
>        -->
>
>        <!-- Because this Realm is here, an instance will be shared globally
> -->
>
>        <!-- This Realm uses the UserDatabase configured in the global JNDI
>             resources under the key "UserDatabase".  Any edits
>             that are performed against this UserDatabase are immediately
>             available for use by the Realm.  -->
>        <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
>               resourceName="UserDatabase"/>
>
>        <!-- Comment out the old realm but leave here for now in case we
>             need to go back quickly -->
>        <!--
>        <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"
>               driverName="org.gjt.mm.mysql.Driver"
>            connectionURL="jdbc:mysql://localhost/authority"
>           connectionName="test" connectionPassword="test"
>                userTable="users" userNameCol="user_name"
> userCredCol="user_pass"
>            userRoleTable="user_roles" roleNameCol="role_name" />
>        -->
>
>        <!--
>        <Realm  className="org.apache.catalina.realm.JDBCRealm"
>               driverName="oracle.jdbc.driver.OracleDriver"
>            connectionURL="jdbc:oracle:thin:@ntserver:1521:ORCL"
>           connectionName="scott" connectionPassword="tiger"
>                userTable="users" userNameCol="user_name"
> userCredCol="user_pass"
>            userRoleTable="user_roles" roleNameCol="role_name" />
>        -->
>
>        <!--
>        <Realm  className="org.apache.catalina.realm.JDBCRealm"
>               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
>             Note: XML Schema validation will not work with Xerces 2.2.
>         -->
>        <Host name="localhost" appBase="webapps"
>         unpackWARs="true" autoDeploy="true"
>         xmlValidation="false" xmlNamespaceAware="false">
>
>          <!-- Defines a cluster for this node,
>               By defining this element, means that every manager will be
> changed.
>               So when running a cluster, only make sure that you have webapps
> in there
>               that need to be clustered and remove the other ones.
>               A cluster has the following parameters:
>
>               className = the fully qualified name of the cluster class
>
>               clusterName = a descriptive name for your cluster, can be
> anything
>
>               mcastAddr = the multicast address, has to be the same for all
> the nodes
>
>               mcastPort = the multicast port, has to be the same for all the
> nodes
>
>               mcastBindAddress = bind the multicast socket to a specific
> address
>
>               mcastTTL = the multicast TTL if you want to limit your
> broadcast
>
>               mcastSoTimeout = the multicast readtimeout
>
>               mcastFrequency = the number of milliseconds in between sending
> a "I'm alive" heartbeat
>
>               mcastDropTime = the number a milliseconds before a node is
> considered "dead" if no heartbeat is received
>
>               tcpThreadCount = the number of threads to handle incoming
> replication requests, optimal would be the same amount of threads as nodes
>
>               tcpListenAddress = the listen address (bind address) for TCP
> cluster request on this host,
>                                  in case of multiple ethernet cards.
>                                  auto means that address becomes
>                                  InetAddress.getLocalHost().getHostAddress()
>
>               tcpListenPort = the tcp listen port
>
>               tcpSelectorTimeout = the timeout (ms) for the Selector.select()
> method in case the OS
>                                    has a wakup bug in java.nio. Set to 0 for
> no timeout
>
>               printToScreen = true means that managers will also print to
> std.out
>
>               expireSessionsOnShutdown = true means that
>
>               useDirtyFlag = true means that we only replicate a session
> after setAttribute,removeAttribute has been called.
>                              false means to replicate the session after each
> request.
>                              false means that replication would work for the
> following piece of code: (only for SimpleTcpReplicationManager)
>                              <%
>                              HashMap map =
> (HashMap)session.getAttribute("map");
>                              map.put("key","value");
>                              %>
>               replicationMode = can be either 'pooled', 'synchronous' or
> 'asynchronous'.
>                                 * Pooled means that the replication happens
> using several sockets in a synchronous way. Ie, the data gets replicated,
> then the request return. This is the same as the 'synchronous' setting
> except it uses a pool of sockets, hence it is multithreaded. This is the
> fastest and safest configuration. To use this, also increase the nr of tcp
> threads that you have dealing with replication.
>                                 * Synchronous means that the thread that
> executes the request, is also the
>                                 thread the replicates the data to the other
> nodes, and will not return until all
>                                 nodes have received the information.
>                                 * Asynchronous means that there is a specific
> 'sender' thread for each cluster node,
>                                 so the request thread will queue the
> replication request into a "smart" queue,
>                                 and then return to the client.
>                                 The "smart" queue is a queue where when a
> session is added to the queue, and the same session
>                                 already exists in the queue from a previous
> request, that session will be replaced
>                                 in the queue instead of replicating two
> requests. This almost never happens, unless there is a
>                                 large network delay.
>          -->
>          <!--
>              When configuring for clustering, you also add in a valve to
> catch all the requests
>              coming in, at the end of the request, the session may or may not
> be replicated.
>              A session is replicated if and only if all the conditions are
> met:
>              1. useDirtyFlag is true or setAttribute or removeAttribute has
> been called AND
>              2. a session exists (has been created)
>              3. the request is not trapped by the "filter" attribute
>
>              The filter attribute is to filter out requests that could not
> modify the session,
>              hence we don't replicate the session after the end of this
> request.
>              The filter is negative, ie, anything you put in the filter, you
> mean to filter out,
>              ie, no replication will be done on requests that match one of
> the filters.
>              The filter attribute is delimited by ;, so you can't escape out
> ; even if you wanted to.
>
>              filter=".*\.gif;.*\.js;" means that we will not replicate the
> session after requests with the URI
>              ending with .gif and .js are intercepted.
>
>              The deployer element can be used to deploy apps cluster wide.
>              Currently the deployment only deploys/undeploys to working
> members in the cluster
>              so no WARs are copied upons startup of a broken node.
>              The deployer watches a directory (watchDir) for WAR files when
> watchEnabled="true"
>              When a new war file is added the war gets deployed to the local
> instance,
>              and then deployed to the other instances in the cluster.
>              When a war file is deleted from the watchDir the war is
> undeployed locally
>              and cluster wide
>          -->
>
>          <!--
>          <Cluster
> className="org.apache.catalina.cluster.tcp.SimpleTcpCluster"
>
> managerClassName="org.apache.catalina.cluster.session.DeltaManager"
>                   expireSessionsOnShutdown="false"
>                   useDirtyFlag="true"
>                   notifyListenersOnReplication="true">
>
>              <Membership
>                  className="org.apache.catalina.cluster.mcast.McastService"
>                  mcastAddr="228.0.0.4"
>                  mcastPort="45564"
>                  mcastFrequency="500"
>                  mcastDropTime="3000"/>
>
>              <Receiver
>
> className="org.apache.catalina.cluster.tcp.ReplicationListener"
>                  tcpListenAddress="auto"
>                  tcpListenPort="4001"
>                  tcpSelectorTimeout="100"
>                  tcpThreadCount="6"/>
>
>              <Sender
>
> className="org.apache.catalina.cluster.tcp.ReplicationTransmitter"
>                  replicationMode="pooled"
>                  ackTimeout="15000"
>                  waitForAck="true"/>
>
>              <Valve
> className="org.apache.catalina.cluster.tcp.ReplicationValve"
>
> filter=".*\.gif;.*\.js;.*\.jpg;.*\.png;.*\.htm;.*\.html;.*\.css;.*\.txt;"/>
>
>              <Deployer
> className="org.apache.catalina.cluster.deploy.FarmWarDeployer"
>                        tempDir="/tmp/war-temp/"
>                        deployDir="/tmp/war-deploy/"
>                        watchDir="/tmp/war-listen/"
>                        watchEnabled="false"/>
>
>              <ClusterListener
> className="org.apache.catalina.cluster.session.ClusterSessionListener"/>
>          </Cluster>
>          -->
>
>
>
>          <!-- 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" />
>          -->
>
>          <!-- 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" resolveHosts="false"/>
>          -->
> 		
>          <!-- 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.
>               This access log implementation is optimized for maximum
> performance,
>               but is hardcoded to support only the "common" and "combined"
> patterns.
>          -->
>          <!--
>          <Valve
> className="org.apache.catalina.valves.FastCommonAccessLogValve"
>                   directory="logs"  prefix="localhost_access_log."
> suffix=".txt"
>                   pattern="common" resolveHosts="false"/>
>          -->
> 	
>        </Host>
>
>      </Engine>
>
>    </Service>
>
> </Server>
>
> Thanks for quick reply, Smith
>


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