Article:  |
Job Scheduling in Java | |
| Subject: | Integrating quartz in a web application | |
| Date: | 2005-02-02 04:32:33 | |
| From: | Qaurtz | |
|
Hi, I have prepared a class which sends the mail using a method sendMail() having mailing details as its parameters.I am calling this method from a jsp which provides a mailing UI.Its working fine.The problem is i have to schedule this task n for which I am using Quartz.I did this task in a standalone application using the CronTrigger. But i cant able to implement this job in my web-application. Somebody help me to get rid of this problem.Also tell me how can implement quartz in web-applications.(In a Clear Way).
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Showing messages 1 through 8 of 8.
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Integrating quartz in a web application
2006-11-08 05:11:44 shivapaka [Reply | View]
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Integrating quartz in a web application
2007-05-28 23:52:17 Saravjava [Reply | View]
Hi,
Anyone can send a code for integrating quartz
in a web application.I'm using crontrigger.java
and a simple hello.class.how to convert this standalone java application into web aplication. -
Integrating quartz in a web application
2007-03-27 06:35:11 screenforsathish [Reply | View]
hai
i am also implement the quartz concept for email automatic firing operation but it works fine except that job scheduler from cron expression will run with duplicates i dont know what is the reason so what i have to do please it is urgent one please mail me i will explain u clearly
my email id = g.sathishkumar@yahoo.co.in
Thank you -
Integrating quartz in a web application
2007-03-27 06:35:11 screenforsathish [Reply | View]
hai
i am also implement the quartz concept for email automatic firing operation but it works fine except that job scheduler from cron expression will run with duplicates i dont know what is the reason so what i have to do please it is urgent one please mail me i will explain u clearly
my email id = g.sathishkumar@yahoo.co.in
Thank you -
Integrating quartz in a web application
2007-03-27 06:35:10 screenforsathish [Reply | View]
hai
i am also implement the quartz concept for email automatic firing operation but it works fine except that job scheduler from cron expression will run with duplicates i dont know what is the reason so what i have to do please it is urgent one please mail me i will explain u clearly
my email id = g.sathishkumar@yahoo.co.in
Thank you -
Integrating quartz in a web application
2007-03-27 06:35:09 screenforsathish [Reply | View]
hai
i am also implement the quartz concept for email automatic firing operation but it works fine except that job scheduler from cron expression will run with duplicates i dont know what is the reason so what i have to do please it is urgent one please mail me i will explain u clearly
my email id = g.sathishkumar@yahoo.co.in
Thank you
package com.v2sol;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.CronTrigger;
import org.quartz.impl.StdSchedulerFactory;
import javax.servlet.*;
import java.io.*;
import javax.servlet.http.HttpServlet;
import org.quartz.ee.servlet.*;
public class ExcelDBServlet extends HttpServlet {
@Override
public void init(ServletConfig config) throws ServletException {
System.out.println("Initializing Scheduler PlugIn for Jobs!");
super.init(config);
ServletContext ctx = config.getServletContext();
Scheduler scheduler = null;
StdSchedulerFactory factory = (StdSchedulerFactory)
ctx.getAttribute(QuartzInitializerServlet.QUARTZ_FACTORY_KEY);
try {
scheduler = factory.getScheduler();
JobDetail jd = new JobDetail("job1", "group1",ExcelJob.class);
CronTrigger cronTrigger = new CronTrigger("trigger1","group1");
String cronExpr = null;
cronExpr = getInitParameter("cronExpr");
System.out.println(cronExpr);
cronTrigger.setCronExpression(cronExpr);
scheduler.scheduleJob(jd, cronTrigger);
System.out.println("Job scheduled now ..");
} catch (Exception e){
e.printStackTrace();
}
}
@Override
public void service(ServletRequest request, ServletResponse response)throws ServletException, IOException {
PrintWriter pw=response.getWriter();
pw.print("<html> <body> <h1>");
pw.print("Please wait,DataBase Operations is performing.............");
pw.print("</h1></body></html>");
}
@Override
public String getServletInfo() {
return null;
}
}
-----
web.xml
<web-app>
<servlet>
<servlet-name>QuartzInitializer</servlet-name>
<display-name>Quartz Initializer Servlet</display-name>
<servlet-class>org.quartz.ee.servlet.QuartzInitializerServlet</servlet-class>
<load-on-startup>1</load-on-startup>
<init-param>
<param-name>config-file</param-name>
<param-value>quartz.properties</param-value>
</init-param>
<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>
</servlet>
<servlet>
<servlet-name>first</servlet-name>
<servlet-class>com.v2sol.StartQuartz</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>first</servlet-name>
<url-pattern>/fst</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>one</servlet-name>
<servlet-class>com.v2sol.ExcelDBServlet</servlet-class>
<init-param>
*******<param-name>cronExpr</param-name>
<param-value>0,30 * * ? * MON-FRI</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>one</servlet-name>
<url-pattern>/excel</url-pattern>
</servlet-mapping>
</web-app>