Execution stops after retrieving the factory from the ServletContext while

Question

Hi,
I just started working with Quartz, so I am clueless as to why I am getting this error. This is my first time tying to integrate Quartz 1.6.0 in a web app. I am using the JSF Framework. Although I have added the necessary jars I am still getting the error above: servlet.jar not loaded. If you follow the java code and server output you can see that after retrieving the factory from the ServletContext there is no further execution . Following is the definition of the class used for scheduling:
Quartz Version: 1.6.0
IDE : Netbeans 5.0
AppServer: Tomcat 5.5
*************************************** JAVA CODE *************************************
* BirthdayScheduler.java
* Created on May 20, 2008, 5:24 PM
package com.csg.cs.cscomwebdev.servlet.timer;
import java.io.*;
import java.net.*;
import java.util.Date;
import javax.servlet.*;
import javax.servlet.http.*;
import org.quartz.JobDetail;
import org.quartz.SchedulerException;
import org.quartz.SimpleTrigger;
import org.quartz.impl.StdSchedulerFactory;
import org.quartz.Scheduler;
* @author Arijit Datta
* @version
public class BirthdayScheduler extends HttpServlet {
/** Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
* @param request servlet request
* @param response servlet response
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
out.close();
/** Handles the HTTP <code>GET</code> method.
* @param request servlet request
* @param response servlet response
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
/** Handles the HTTP <code>POST</code> method.
* @param request servlet request
* @param response servlet response
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
/** Returns a short description of the servlet.
public String getServletInfo() {
return "Short description";
public void init()
System.out.println(" ------------ STARTTING JOB --------------");
// Retrieve the ServletContext
ServletContext theApplicationsServletContext = this.getServletContext();
// Retrieve the factory from the ServletContext
StdSchedulerFactory factory =(StdSchedulerFactory)theApplicationsServletContext.getAttribute("QuartzFactory Servlet.QUARTZ_FACTORY_KEY");
System.out.println(" ------------ FACTORY GOT --------------");
try {
// Retrieve the scheduler from the factory
Scheduler scheduler = factory.getScheduler();
System.out.println(" ------------ SCHEDULER GOT --------------");
// Start the scheduler
scheduler.start();
System.out.println(" ------------ SCHEDULER STARTED --------------");
//Creating a job
JobDetail birthdayJobDetail = new JobDetail("birthdayReminderJob", scheduler.DEFAULT_GROUP, BirthdayReminderJob.class );
System.out.println(" ------------ JOB CREATED --------------");
//Creating a trigger
SimpleTrigger birthdayJobtrigger = new SimpleTrigger("birthdayReminderTrigger",scheduler.DEFAULT_GROUP, new Date(),null,SimpleTrigger.REPEAT_INDEFINITELY, 60L * 1000L);
System.out.println(" ------------ TRIGGER CREATED --------------");
//Scheduling the job
scheduler.scheduleJob(birthdayJobDetail,birthdayJobtrigger );
System.out.println(" ------------ JOB SCHEDULED --------------");
} catch (SchedulerException ex) {
System.out.println(ex.getMessage());
} ************************************* SECTION OF WEB.XML ************************
<servlet>
<description>Quartz Initializer Servlet</description>
<servlet-name>QuartzInitializer</servlet-name>
<servlet-class>org.quartz.ee.servlet.QuartzInitializerServlet</servlet -class>
<init-param>
<param-name>shutdown-on-unload</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>start-scheduler-on-load</param-name>
<param-value>true</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet>
<servlet-name>BirthdayScheduler</servlet-name>
<servlet-class>com.csg.cs.cscomwebdev.servlet.timer.BirthdayScheduler< /servlet-class>
<load-on-startup>1</load-on-startup>
</servlet> *********************************** SERVER OUTPUT *******************************
Using CATALINA_BASE: C:\Documents and Settings\165171\.netbeans\5.0\jakarta-tomcat-5.5.9_base
Using CATALINA_HOME: D:\Program Files\netbeans-5.0\enterprise2\jakarta-tomcat-5.5.9
Using CATALINA_TMPDIR: C:\Documents and Settings\165171\.netbeans\5.0\jakarta-tomcat-5.5.9_base\temp
Using JAVA_HOME: C:\Program Files\Java\jdk1.5.0_02
May 20, 2008 7:27:13 PM org.apache.coyote.http11.Http11Protocol init
INFO: Initializing Coyote HTTP/1.1 on http-8084
May 20, 2008 7:27:13 PM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 766 ms
May 20, 2008 7:27:13 PM org.apache.catalina.core.StandardService start
INFO: Starting service Catalina
May 20, 2008 7:27:13 PM org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/5.5.9
May 20, 2008 7:27:13 PM org.apache.catalina.core.StandardHost start
INFO: XML validation disabled
May 20, 2008 7:27:14 PM org.apache.catalina.loader.WebappClassLoader validateJarFile
INFO: validateJarFile(D:\Java Programs\cs\CSCOMWEBDEV\build\web\WEB-INF\lib\servlet.jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class
log4j:WARN No appenders could be found for logger (org.apache.catalina.session.ManagerBase).
log4j:WARN Please initialize the log4j system properly.
------------ STARTTING JOB --------------
------------ FACTORY GOT --------------
May 20, 2008 7:27:15 PM org.apache.coyote.http11.Http11Protocol start
INFO: Starting Coyote HTTP/1.1 on http-8084
May 20, 2008 7:27:15 PM org.apache.jk.common.ChannelSocket init
INFO: JK: ajp13 listening on /0.0.0.0:8009
May 20, 2008 7:27:15 PM org.apache.jk.server.JkMain start
INFO: Jk running ID=0 time=0/32 config=null
May 20, 2008 7:27:15 PM org.apache.catalina.storeconfig.StoreLoader load
INFO: Find registry server-registry.xml at classpath resource
May 20, 2008 7:27:16 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 2802 ms Can anybody please help out? Where exactly am I going wrong?
Thanks a lot!
AD

Answer 1

Your stop condition is "continue if true". This means that, unless you press the button, the while loop will stop after one iteration.
First, you should change the termination condition to "stop if true".
Then you should make the stop button "latch when released" (right-click..mechanical action). Else you don't have a well defined state after the program stops.
You should decide on a reasonable loop rate and enter it for the wait control. (beter use a diagram constant if the value is always the same).
Why do you need to continue reading in a loop? Are you expecting the response to change over time?
Do you want to keep appending to the string indicator or only show the latest characters received?
Maybe you also need a wait between the writing and reading?
Delete the ms timer value indicator, it is completely useless.
Do you get any error codes?
Don't use the run continous button. Use the plain run button.
What device are you communicating with? Do you have documentation?
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