Run servlet automatically when tomcat startup

Dear all
I need help to run servlet automatically when tomcat startup without starting even the application containing the servlet
thanks in advance

lol
i've the same problem with my car,I want it to go ahead but without starting the engine and using all this gasoline...
Seriously... the servlet IS almost your application
when you start the server, the application starts to
check the init() method of the servlet Interface
and the "load-on-startup" parameter of the servlet in the deployment descriptor

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Initialize a web service when Tomcat startup

Hi,
I have a web service, built using Axis 2 1.2, that will do all the initialization at the first service call (e.g. create new database tables, create JAXB objects, etc), but it's taking too much time to do those tasks (at least twice slower than a normal service call with everything ready).
i was wondering if i can do the initialization at Tomcat startup, instead of doing it at the first service call, so that the first service call could always get the highest possible performance..
Thanks..

problem resolved... i've created a servlet class to initialize everything, and i have modified web.xml to call this servlet class when tomcat startup.

Re: Running servlets automatically.

this is the Continuation of my previous post Running servlets automatically.
Hi everybody tnx for ur replies.
I will explain my problem in detail here,so that somebody can suggest me an suitable solution.
i need to update one table in DB for every six hours.for that purpose i have written a class with thread.sleep().
This class updates the table and sleeps for six hours and it runs after that delay......this process repeats....until the execution is terminated manually.
in the beginning i specified this class as the startup class of the server, but as this class uses thread.sleep() method , it takes the control for ever..and never let the server to run...
so i make this class to run in an independent window
the execution of the class is triggered by the server when it starts.this will open a DOS window and the execution of the class begins.
but the execution continues even after the server gets terminated..coz..it is running as a separate process not under the server process.
but i need to terminate this updation process after the server gets terminated..
so i decided to use an dedicated servlet for this purpose.,..coz it will b terminated after the server gets terminated.
The servlet should
start automatically when the server starts..
and it has to call the Updation class methods..
and prints the result message ..
it has to call itself after six hours delay..
this delay should not affect other components of the server and its processes.
plz help me
thanx in advance
Regards
-John-

Personnally a Servlet isn't the correct way to perform this task. I'ld use a ServletContextListener, add the instance to the ServletContext so then it can be accessed from say startScheduler.jsp, endScheduler.jsp & displayStatusOfScheduler.jsp.
Your web.xml would need the following added:<listener>
     <listener-class>package.subpackage.ContextLifeCycleListener</listener-class>
</listener>Create the listener.package package.subpackage;
imports ...
public class ContextLifeCycleListener implements ServletContextListener {
     private ServletContext servletContext = null;
     private ContextLogger contextLogger = new ContextLogger( false );
     public void contextInitialized( ServletContextEvent servletContextEvent ) {
          servletContext = servletContextEvent.getServletContext();
          servletContext.setAttribute( "backgroundScheduler", this );
     public void contextDestroyed( ServletContextEvent servletContextEvent ) {
          terminateScheduler();
     public void startScheduler() {
          // ... Start Scheduler Processing
     public void terminateScheduler() {
          // ... Terminate Scheduler Processing
     public String//boolean status() {
          return ?; // boolean, eg scheduler on or off
          // String, eg "Off", "On", "Running"
}That will create a process which starts when the context does & is informed when the context is restarted or stopped. This then hides it away meaning someone can't access it directly by typing in a url. Only your Servlet/JSP/JSTL can access it via the ServletContext Attribute "backgroundScheduler".

How can I stop Firefox from loading automatically when I startup my computer?

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HTTP Status 404 - /servlet
type Status report
message /servlet
description The requested resource (/servlet) is not available.
Apache Tomcat/4.1.18
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Isn't jakarta-tomcat-3.2.3 different compared the the one I have jakarta-tomcat4.1.18? Anyway thats what I read somewhere. The instructions you gave me do you think they are different because of us having different verions? I don't know if this is normal but whenever I startup my computer it just automaticly starts up tomcat server so when I put http://localhost:8080 it goes to the page saying I setup tomcat successfully. When I try to shutdown it doesn't do it.
About the classpath. I thought i'm supposed to only put one path. So if I were to do that it would look like path set TOMCAT_HOME=C:\jdk1.1.8\Program Files\Apache Group\Tomcat 4.1 Thats how I would set it on my computer. I already installed and ran tomcat. I think your right I need to check the documentation correctly.
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Hello frens
I need to start a process when tomcat startup
the problem is when tomcat startup i have a bat file PushMsg.bat which content are as .............
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Se16 -- table:RSPCPROCESSLOG - click on display entries.
Entet the variant, instance start date (this info you can get from the "display message" of PC.
Now execute to display the table entries of RSPCPROCESSLOG.
Next goto SE37 transaction --enter RSPC_PROCESS_FINISH
Take the entries from the above table to set the input parameters of the FM.
I_logid = log_id(from above table)
I_type = type(from above table)
i_variant = varaint (from above table)
i_instance = (from above table)
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Jiten

Hi ! I have a similar problem, well, it's along the same line ...
I'm using NetBeans 4.1, and i've coded a servlet. Using NetBeans to launch my servlet (with the bundled Tomcat 5.5.7) works fine, however i need to deploy my application unto a Tomcat 5.5.9 server.
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(These work on the NetBeans Tomcat bundle 5.5.7)
My form action :
<form name="index" method="get" action="PageServlet">
My web.xml :
<servlet>
<servlet-name>PageServlet</servlet-name>
<servlet-class>application.PageServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>PageServlet</servlet-name>
<url-pattern>/PageServlet</url-pattern>
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I have Tomcat 4.0. I am trying to run servlet but I could not manage it. I have put my class file in webapp/root/web-inif/classes/ I can not run my servlet... how can I manage this... what should I do more?
the errors are :
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
javax.servlet.ServletException: Cannot allocate servlet instance for path /servlet/Servlet1
     at org.apache.catalina.servlets.InvokerServlet.serveRequest(InvokerServlet.java:419)
     at org.apache.catalina.servlets.InvokerServlet.doGet(InvokerServlet.java:180)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:190)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
     at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2347)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
     at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
     at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
     at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1027)
     at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1125)
     at java.lang.Thread.run(Thread.java:484)
root cause
java.lang.NoClassDefFoundError: Servlet1 (wrong name: servlet/Servlet1)
     at java.lang.ClassLoader.defineClass0(Native Method)
     at java.lang.ClassLoader.defineClass(ClassLoader.java:486)
     at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:111)
     at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1643)
     at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:937)
     at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1372)
     at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1254)
     at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:867)
     at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:655)
     at org.apache.catalina.servlets.InvokerServlet.serveRequest(InvokerServlet.java:400)
     at org.apache.catalina.servlets.InvokerServlet.doGet(InvokerServlet.java:180)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:190)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
     at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2347)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
     at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
     at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
     at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1027)
     at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1125)
     at java.lang.Thread.run(Thread.java:484)

Can you run something automatically at startup?

I'm not sure if this is for the general public or a developer to answer but my question is:
Is it possible to have something (ie. a video or application) automatically run when you startup the ipod touch?
What I would like to try and do is give out ipod touches to clients but would like to show a promo video when it is turned on. A little like demo mode I guess. Then the client has the option to either turn that function off / disable the startup video and just use it like a regular ipod touch.
Thanks.

Normally, you slide to unlock your Touch - there's no way around that. But if you install an App like Fluid, it appears automatically once you slide your Touch open (if you want that to happen).
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Hi ,
How to run servlets in tomcat server. I created two files html and servlet file.
Html file
callservlet.html
<html>
<body>
<form method=post action="servletcalled.class">
<input type=submit value="submit">
</form>
<body>
</html>
servlet file
servletcalled.java contains
public void doPost(HttpServletRequest req,HttpServletResponse res ){
java.io.PrintWriter out = req.getWriter();
out.println("Hi, executed");
i put the callservlet.html in webapps/examples/ and servletcalled.class was in webapps/examples/Web-inf/classes/
After starting the tomcat and running the program html file is getting exceuted but when i click on the submit button this error is prompted
type Status report
message servletcalled.class
description The requested resource (servletcalled.class) is not available.
Thanks in advance

Thanks,
I created a new directory in webapps
s "webapps/test".
Test directory contains
1. callservlet.html file
2. another directory Web-inf (i.e,
webapps/test/Web-inf)
Web-inf directory contains
1. web.xml file
2. another directory classes (i.e,
webapps/test/Web-inf/calsses)
classes directory contains
1. servletcalled.class file
web.xml file contains
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web
Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<servlet>
<servlet-name>Example</servlet-name>
<servlet-class>Example</servlet-class>
</servlet>
</web-app>
-->should be: <servlet-class>servletcalled</servlet-called>
then in the <web-app> scope define this:
<servlet-mapping>
<servlet-name>Example</servlet-name>
<url-pattern>/servlets/Example</url-pattern>
</servlet-mapping>
>
thanks in advance i am working hard on that but
notable to get the solutionbtw by reading the documentation of tomcat and tutorials of jave on the java site (here), you would have known this!

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I've installed Tomcat and ran the examples fine, Ialso created some test jsp files and placed them in C:\tomcat\Tomcat-4.1\webapps\ROOT\test and then ran them calling http://localhost:8080/test/Hello.jsp which worked fine. When I place servlets into the same folder and call it, I get a 404. Do I need to set something in the web.xml file and if so please show and example.

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My web.xml contains the correct tags that define it:
<servlet>
<servlet-name>inseriscicampagnaservlet</servlet-name>
<servlet-class>servlet.InserisciCampagnaServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>inseriscicampagnaservlet</servlet-name>
<url-pattern>/inseriscicampagnaservlet</url-pattern>
</servlet-mapping>
Caller line in jsp file:
<form action="inseriscicampagnaservlet" method="POST">
I wrote other servlets that run without problems. The only difference between this and the others is that I created this in the wrong directory and then move it in /servlet.
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Spinotto

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Can you help me anyone to run the shutdown oc4j instance automatically when user Turn off/Log off the application or the computer?
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Arif

Ah, sorry I misunderstood your question (probably not enough coffee in the morning); anyway there are folders for scripts which should be executed on startup / shutdown or logon / logoff:
Startup
%SYSTEMROOT%\System32\GroupPolicy\Machine\Scripts\StartupShutdown
%SYSTEMROOT%\System32\GroupPolicy\Machine\Scripts\ShutdownLogon
%SYSTEMROOT%\System32\GroupPolicy\User\Scripts\LogonLogoff
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Running servlets in tomcat server

Hi,
I am not able to execute servlets in tomcat,
When i executed the program html file was running perfectly and when i click on the submit button it is displaying the following error
type Status report
message ServletCalled.class
description The requested resource (ServletCalled.class) is not available.
I followed the below procedure
I created a new directory in webapps "webapps/test".
Test directory contains
1. callservlet.html file
2. another directory Web-inf (i.e, webapps/test/Web-inf)
Web-inf directory contains
1. web.xml file
2. another directory classes (i.e, webapps/test/Web-inf/calsses)
classes directory contains
1. ServletCalled.class file
Html file code
callservlet.html
<html>
<body>
<form method=post action="/ServletCalled/ServletCalled.class">
<input type=submit value="submit">
</form>
<body>
</html>
servlet file
ServletCalled.java contains
public void doPost(HttpServletRequest req,HttpServletResponse res ){
java.io.PrintWriter out = req.getWriter();
out.println("Hi, executed");
web.xml file
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web
Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<servlet>
<servlet-name>ServletCalled</servlet-name>
<servlet-class>ServletCalled</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>ServletCalled</servlet-name>
<url-pattern>/ServletCalled</url-pattern>
</servlet-mapping>
</web-app>
i used all the options above i changed the <url-pattern> and form tag to (<form action="/ServletCalled" method=get>)but same error persists
Please help me out in this thanks in advance

thanks !! i got the solution

Run servlet automatically when tomcat startup

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