package com.sun.j2ee.workflow.control.listeners;import javax.servlet.ServletContext;import javax.servlet.ServletContextEvent;import javax.servlet.ServletContextAttributeEvent;import javax.servlet.ServletContextListener;import javax.servlet.ServletContextAttributeListener;import javax.servlet.http.HttpSessionAttributeListener;import javax.servlet.http.HttpSessionActivationListener;import javax.servlet.http.HttpSessionBindingEvent;import javax.servlet.http.HttpSessionEvent;import javax.servlet.http.HttpSessionListener;import java.io.*;import java.util.Locale;import com.sun.j2ee.workflow.util.Debug;import com.sun.j2ee.workflow.mail.*;import com.sun.j2ee.workflow.mail.exceptions.*;/** * Example listener for context-related application events, which were * introduced in the 2.3 version of the Servlet API.  This listener * merely documents the occurrence of such events in the application log * associated with our servlet context. * * @author James Cai */public final class Listenerset1implements ServletContextListener,ServletContextAttributeListener,HttpSessionAttributeListener, HttpSessionListener,HttpSessionActivationListener {        private boolean logToFile = false;    /*    private String logFileASSE = "../webapps/workflow/static/ListenerASSE.txt";        private String logFileAAE = "../webapps/workflow/static/ListenerAAE.txt";    private String logFileSCDE = "../webapps/workflow/static/ListenerSCDE.txt";    private String logFileSATE = "../webapps/workflow/static/ListenerSATE.txt";    private String logFileSACE = "../webapps/workflow/static/ListenerSACE.txt";    private String logFileCIAL = "../webapps/workflow/static/ListenerCIAL.txt";        private FileOutputStream logFileOutASSE=null;    private FileOutputStream logFileOutAAE=null;    private FileOutputStream logFileOutSCDE=null;    private FileOutputStream logFileOutSATE=null;    private FileOutputStream logFileOutSACE=null;    private FileOutputStream logFileOutCIAL=null;    */        private ServletContext context = null;        private MailSender amailSender = null;        private File baseDir = null;        private MailSender getMailSender() {        if (amailSender == null) {            amailSender = new MailSender();        }        return amailSender;    }    //find the emails of who wants to received a update notice        private String getReceiver(String taskid)    {        return "jian.cai@sun.com";            }        public void attributeAdded(ServletContextAttributeEvent event) {        /*        String message ="attributeAdded('" + event.getName() + "', '" +        event.getValue() + "')";        File logFileNotify = new File(baseDir, "NotificationLog.txt");        File logFileMailError = new File(baseDir, "MailError.txt");       if (event.getName().equals("taskupdate"))       {           EmailModel amesg = new EmailModel("Workflow Update [Do not reply]",                                              "Task Information Updated: "+                                             "Please See "+"http://localhost:8080/workflow/control/viewtask?task_ID="+                                             event.getValue()+"for Detail.",                                         getReceiver((String)event.getValue()), Locale.ENGLISH);       //           try           {           getMailSender().createAndSendMail(amesg);                   Debug.log("Mail: to"+ getReceiver((String)event.getValue()), logFileNotify);           }           catch (Exception ex)           {               Debug.log("Mail Error:"+ex, logFileMailError);               System.out.println(ex);           }       }         */    }                //ListenerAAE application attribute        public void attributeRemoved(ServletContextAttributeEvent event) {                String message = "attributeRemoved('" + event.getName() + "', '" +        event.getValue() + "')";    }        //ListenerAAE application attribute        public void attributeReplaced(ServletContextAttributeEvent event) {                String message = "attributeReplaced('" + event.getName() + "', '"+ "')";    }        //ListenerSATE session attribute        public void attributeAdded(HttpSessionBindingEvent event) {                String message = "attributeAdded('" + "', '" +        event.getName() + "', '"  + "')";    }        //ListenerSATE session attribute        public void attributeRemoved(HttpSessionBindingEvent event) {                String message = "attributeRemoved('" + "', '" +        event.getName() + "', '" + "')";    }        //ListenerSATE session attribute        public void attributeReplaced(HttpSessionBindingEvent event) {                String message = "attributeReplaced('" + "', '" +        event.getName() + "', '" + "')";    }        //ListenerASSE application shutdown        public void contextDestroyed(ServletContextEvent event) {                String message = "contextDestroyed()";        Debug.println(message);        this.context = null;    }        //ListenerASSE application startup        public void contextInitialized(ServletContextEvent event) {                this.context = event.getServletContext();        String message = "Workflow: contextInitialized()";        Debug.println(message);        baseDir = (File)context.getAttribute("javax.servlet.context.tempdir");        //String empty = null;        //if (empty.equals("notnul")) Debug.println("Listenerset1 error coor");        //log(message, logFileASSE, logFileOutASSE);            }        //ListenerSCDE session created        public void sessionCreated(HttpSessionEvent event) {                String message = "sessionCreated('" + " new session" + "')";    }        //ListenerSCDE session destroyed        public void sessionDestroyed(HttpSessionEvent event) {                String message = "sessionDestroyed('" + " new session" + "')";        Debug.println("Listenerset1: sessionDestroyed");        String empty = null;        if (empty.equals("notnul")) Debug.println("Listenerset1 error coor");    }        //ListenerSACE session activation        public void sessionDidActivate(HttpSessionEvent event) {                String message = "sessionDidActivate('" + " new session" + "')";    }        //ListenerSACE session activation        public void sessionWillPassivate(HttpSessionEvent event) {                String message = "sessionWillPassivate('" + " new session " + "')";    }    }