Tomcat Lifecycle exception

[Ishitha Dyanil]

Hi,

I downloaded newer version of Tomcat 7 and I deployed my application folder in it.
and I started the tomcat.
I saying like this.

Feb 01, 2012 1:31:12 PM org.apache.catalina.core.ContainerBase addChildInternal
SEVERE: ContainerBase.addChild: start:
org.apache.catalina.LifecycleException: Failed to start component [StandardEngin
e[Catalina].StandardHost[localhost].StandardContext[/Sessions]]
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase
.java:897)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:87
3)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:615)

        at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.jav
a:1095)
        at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig
.java:1617)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:47
1)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
        at java.util.concurrent.FutureTask.run(FutureTask.java:166)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.
java:1110)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor
.java:603)
        at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.IllegalArgumentException: Servlet mapping specifies an unkn
own servlet name First Session
        at org.apache.catalina.core.StandardContext.addServletMapping(StandardCo
ntext.java:3204)
        at org.apache.catalina.core.StandardContext.addServletMapping(StandardCo
ntext.java:3183)
        at org.apache.catalina.deploy.WebXml.configureContext(WebXml.java:1302)
        at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.jav
a:1255)
        at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfi
g.java:825)
        at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfi
g.java:300)
        at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(Lifecycl
eSupport.java:119)
        at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBa
se.java:90)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContex
t.java:5161)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
        ... 11 more

Feb 01, 2012 1:31:12 PM org.apache.catalina.startup.HostConfig deployDirectory
SEVERE: Error deploying web application directory C:\Users\Krishna\Desktop\JAVA\
Tomcat7\apache-tomcat-7.0.25\webapps\Sessions
java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catal
ina.LifecycleException: Failed to start component [StandardEngine[Catalina].Stan
dardHost[localhost].StandardContext[/Sessions]]
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase
.java:900)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:87
3)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:615)

        at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.jav
a:1095)
        at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig
.java:1617)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:47
1)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
        at java.util.concurrent.FutureTask.run(FutureTask.java:166)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.
java:1110)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor
.java:603)
        at java.lang.Thread.run(Thread.java:722)

Feb 01, 2012 1:31:13 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-apr-8080"]
Feb 01, 2012 1:31:13 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["ajp-apr-8009"]
Feb 01, 2012 1:31:13 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 851 ms

so what is the problem with my deployment folder.
my folder structure is

C:\Users\Krishna\Desktop\JAVA\Tomcat7\apache-tomcat-7.0.25\webapps\Sessions\com\example\
has only one file

FSession.java

package com.example;


import java.io.*;
import java.util.Enumeration;

import javax.servlet.*;
import javax.servlet.http.*;




public class FSession extends HttpServlet { 
  
	  public void doGet (HttpServletRequest req, HttpServletResponse res)
			       throws ServletException, IOException
	  {
	    //Get the session object

	 // true to indicate if session is not existing already
    
		HttpSession session = req.getSession(true);
    
    		// set content type and other response header fields first
	
	    res.setContentType("text/html");
    
    	// then write the data of the response
    	
		PrintWriter out = res.getWriter();
    
    		out.println("<HEAD><TITLE> " + "FSession  " +
                		"</TITLE></HEAD><BODY>");
	       out.println("<h1> FSession Output </h1>");
  
  	  // Retrieve the  value from the session

	    String sval = (String) session.getValue("Someval");
    
    		if (sval==null) 
		      sval = new String("Object stored in user session");
    
    		  session.putValue("Someval", sval);
    
    		  out.println("Value stored in session object<b>" + sval );
  
    		  out.println("<h3>Request and Session Data:</h3>");

		  out.println("Session ID in Request: " +
                		req.getRequestedSessionId());
		    out.println("<br>Session ID in Request from Cookie: " +
                						req.isRequestedSessionIdFromCookie());
		    out.println("<br>Session ID in Request from URL: " +
                			req.isRequestedSessionIdFromUrl());
		    out.println("<br>Valid Session ID: " +
                		req.isRequestedSessionIdValid());
		    out.println("<h3>Session Data:</h3>");
		
		    out.println("New Session: " + session.isNew());
	
		    out.println("<br>Session ID: " + session.getId());
	
		    out.println("<br>Creation Time: " + session.getCreationTime());

		    out.println("<br>Last Accessed Time: " +
                					session.getLastAccessedTime());
		    out.println("<h3>Session Context Data:</h3>");

		// we can get info on all sessions

		    HttpSessionContext context = session.getSessionContext();
    
    		for (Enumeration e = context.getIds(); e.hasMoreElements() ;) {
		      out.println("Valid Session: " +
                	
			  (String)e.nextElement()+ "<br>");
    		}
    
    		out.println("</BODY>");
		    out.close();
  }
  

}

C:\Users\Krishna\Desktop\JAVA\Sessions\WEB-INF\classes\com\example
has .class

and my web.xml is here
C:\Users\Krishna\Desktop\JAVA\Sessions\WEB-INF

<?xml version="1.0" encoding="ISO-8859-1"?>

<web-app xmlns="http://java.sun.com/xml/ns/javaee"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
                      http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
  version="3.0"
  metadata-complete="true">

  <display-name>Welcome to Tomcat Sessions Applications</display-name>
  <description>
     Welcome to Tomcat Sessions Applications
  </description>



<servlet>
	<servlet-name> First Seesion </servlet-name>
	<servlet-class>com.example.FSession</servlet-class>
</servlet>


<servlet-mapping>
	<servlet-name>First Session </servlet-name>
	<url-pattern>/FSession.do </url-pattern>

</servlet-mapping>
</web-app>

what is wrong with my deployement.Did i make any mistake in it..which I am not identifying!

can any one solve this for me please...

[Maneesh Godbole]

Isha Dy wrote:

Please check your private messages for an important administrative matter.