堆栈跟踪：

INFO: Closing Spring root WebApplicationContext
Mar 31,2011 10:02:22 AM org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc
SEVERE: The web application [/] registered the JBDC driver [com.MysqL.jdbc.Driver] but Failed to unregister it when the web application was stopped. To prevent a memory leak,the JDBC Driver has been forcibly unregistered.
Mar 31,2011 10:02:22 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [/] appears to have started a thread named [Timer-0] but has Failed to stop it. This is very likely to create a memory leak.
Mar 31,2011 10:02:22 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [/] appears to have started a thread named [com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0] but has Failed to stop it. This is very likely to create a memory leak.
Mar 31,2011 10:02:22 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [/c] appears to have started a thread named [com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1] but has Failed to stop it. This is very likely to create a memory leak.
Mar 31,2011 10:02:22 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [/] appears to have started a thread named [com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2] but has Failed to stop it. This is very likely to create a memory leak.
Mar 31,2011 10:02:22 AM org.apache.catalina.loader.WebappClassLoader clearThreadLocalMap
SEVERE: The web application [/] created a ThreadLocal with key of type [java.lang.ThreadLocal] (value [java.lang.ThreadLocal@71ee88dd]) and a value of type [org.apache.cxf.bus.CXFBusImpl] (value [org.apache.cxf.bus.CXFBusImpl@409468ca]) but Failed to remove it when the web application was stopped. This is very likely to create a memory leak.

我实现了监听器：

import javax.servlet.ServletContext;
 import javax.servlet.ServletContextEvent;
 import javax.servlet.ServletContextListener;
 import org.quartz.SchedulerException;
 import org.quartz.impl.StdSchedulerFactory;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 public class QuartzServletContextListener implements ServletContextListener {
     final Logger log = LoggerFactory.getLogger(QuartzServletContextListener.class);
     public static final String QUARTZ_FACTORY_KEY =
             "org.quartz.impl.StdSchedulerFactory.KEY";
     private ServletContext ctx = null;
     private StdSchedulerFactory factory = null;
     public void contextInitialized(ServletContextEvent sce) {
         ctx = sce.getServletContext();
         try {
             factory = new StdSchedulerFactory();
             // Start the scheduler now
             factory.getScheduler().start();
             log.info("Storing QuartzScheduler Factory at"
                     + QUARTZ_FACTORY_KEY);
             ctx.setAttribute(QUARTZ_FACTORY_KEY,factory);
         } catch (Exception ex) {
             log.error("Quartz Failed to initialize",ex);
         }
     }
     public void contextDestroyed(ServletContextEvent sce) {
         try {
             log.info("shutting down");
             factory.getScheduler().shutdown();
             Thread.sleep(1000);
         } catch (InterruptedException ex) {
             log.error("Quartz Failed to shutdown",ex);
         } catch (SchedulerException ex) {
             log.error("Quartz Failed to shutdown",ex);
         }
     }
 }

并在web.xml中添加