title: SEVERE: Null component Catalina:type=JspMonitor,name=jsp,WebModule=//localhost/myproject,J2EEApplication=none,J2EEServer=none
body: <p>I have the following problem.
  I used <strong>jdk1.6.0_23</strong> to compile my project with eclipse.
  but in the server enviroment, tomcat is running with <strong>jre1.6.0_31</strong>.</p>
  
  <p>What might the cause of <code>SEVERE: Null component Catalina:type=JspMonitor,name=jsp,WebModule=//localhost/myproject,J2EEApplication=none,J2EEServer=none</code></p>
  
  <pre><code>May 18, 2012 3:40:41 PM org.apache.catalina.core.AprLifecycleListener lifecycleEvent
  INFO: The Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /usr/java/jre1.6.0_31/lib/amd64/server:/usr/java/jre1.6.0_31/lib/amd64:/usr/java/jre1.6.0_31/../lib/amd64:/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
  May 18, 2012 3:40:41 PM org.apache.coyote.http11.Http11BaseProtocol init
  INFO: Initializing Coyote HTTP/1.1 on http-8084
  May 18, 2012 3:40:41 PM org.apache.catalina.startup.Catalina load
  INFO: Initialization processed in 436 ms
  May 18, 2012 3:40:41 PM org.apache.catalina.core.StandardService start
  INFO: Starting service Catalina
  May 18, 2012 3:40:41 PM org.apache.catalina.core.StandardEngine start
  INFO: Starting Servlet Engine: Apache Tomcat/5.5.27
  May 18, 2012 3:40:41 PM org.apache.catalina.core.StandardHost start
  INFO: XML validation disabled
  May 18, 2012 3:40:41 PM org.apache.catalina.loader.WebappClassLoader validateJarFile
  INFO: validateJarFile(/home/vas/servers/twit_tomcat/webapps/snp/WEB-INF/lib/jetty-jsp-api-2.1.jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/jsp/JspPage.class
  May 18, 2012 3:40:41 PM org.apache.catalina.loader.WebappClassLoader validateJarFile
  INFO: validateJarFile(/home/vas/servers/twit_tomcat/webapps/snp/WEB-INF/lib/jsp-api.jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/jsp/JspPage.class
  May 18, 2012 3:40:41 PM org.apache.catalina.loader.WebappClassLoader validateJarFile
  INFO: validateJarFile(/home/vas/servers/twit_tomcat/webapps/snp/WEB-INF/lib/servlet-api.jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class
  May 18, 2012 3:40:41 PM org.apache.catalina.loader.WebappClassLoader validateJarFile
  INFO: validateJarFile(/home/vas/servers/twit_tomcat/webapps/snp/WEB-INF/lib/servlet.jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class
  May 18, 2012 3:40:43 PM org.apache.commons.modeler.Registry registerComponent
  SEVERE: Null component Catalina:type=JspMonitor,name=jsp,WebModule=//localhost/myproject,J2EEApplication=none,J2EEServer=none
  May 18, 2012 3:40:43 PM org.apache.coyote.http11.Http11BaseProtocol start
  INFO: Starting Coyote HTTP/1.1 on http-8084
  May 18, 2012 3:40:43 PM org.apache.jk.common.ChannelSocket init
  INFO: JK: ajp13 listening on /0.0.0.0:8012
  May 18, 2012 3:40:43 PM org.apache.jk.server.JkMain start
  INFO: Jk running ID=0 time=0/18  config=null
  May 18, 2012 3:40:43 PM org.apache.catalina.storeconfig.StoreLoader load
  INFO: Find registry server-registry.xml at classpath resource
  May 18, 2012 3:40:43 PM org.apache.catalina.startup.Catalina start
  INFO: Server startup in 2116 ms
  </code></pre>