Spring调度程序关闭错误 [英] Spring scheduler shutdown error

问题描述

在tomcat容器中开发基于SPRING的调度程序期间，我总是在取消部署webapp或关闭服务器时获得此logoutput：

During development a SPRING based scheduler in a tomcat container, I always get this logoutput at undeploy webapp or shutdown server:

Apr 28, 2010 4:21:33 PM org.apache.catalina.core.StandardService stop
INFO: Stopping service Catalina
Apr 28, 2010 4:21:33 PM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: A web application appears to have started a thread named [org.springframework.scheduling.quartz.SchedulerFactoryBean#0_Worker-1] but has failed to stop it. This is very likely to create a memory leak.
Apr 28, 2010 4:21:33 PM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: A web application appears to have started a thread named [org.springframework.scheduling.quartz.SchedulerFactoryBean#0_Worker-2] but has failed to stop it. This is very likely to create a memory leak.
Apr 28, 2010 4:21:33 PM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: A web application appears to have started a thread named [org.springframework.scheduling.quartz.SchedulerFactoryBean#0_Worker-3] but has failed to stop it. This is very likely to create a memory leak.
Apr 28, 2010 4:21:33 PM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: A web application appears to have started a thread named [org.springframework.scheduling.quartz.SchedulerFactoryBean#0_Worker-4] but has failed to stop it. This is very likely to create a memory leak.
Apr 28, 2010 4:21:33 PM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: A web application appears to have started a thread named [org.springframework.scheduling.quartz.SchedulerFactoryBean#0_Worker-5] but has failed to stop it. This is very likely to create a memory leak.
.
.
.    
SEVERE: A web application created a ThreadLocal with key of type [org.springframework.core.NamedThreadLocal] (value [Prototype beans currently in creation]) and a value of type [null] (value [null]) but failed to remove it when the web application was stopped. To prevent a memory leak, the ThreadLocal has been forcibly removed.
Apr 28, 2010 4:21:34 PM org.apache.coyote.http11.Http11Protocol destroy
INFO: Stopping Coyote HTTP/1.1 on http-8606

我该如何解决这个问题？

How can I fix this?

谢谢stevedbrown

我将此监听器添加到我的webapp

I add this listener to my webapp

public class ShutDownHook implements ServletContextListener {
    @Override
    public void contextDestroyed(ServletContextEvent arg0) {
        BeanFactory bf = (BeanFactory) ContextLoader.getCurrentWebApplicationContext();
        if (bf instanceof ConfigurableApplicationContext) {
            ((ConfigurableApplicationContext)bf).close();
        }
    }

    @Override
    public void contextInitialized(ServletContextEvent arg0) {
    }
}

和我的web.xml

and my web.xml

<listener>
    <listener-class>pkg.utility.spring.ShutDownHook</listener-class>
</listener>

但错误仍然存​​在。

春季配置：

<bean id="run" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
    <property name="concurrent" value="false" />
    <property name="targetObject" ref="scheduler" />
    <property name="targetMethod" value="task" />
</bean>

<bean id="cronTrg" class="org.springframework.scheduling.quartz.CronTriggerBean">
    <property name="jobDetail" ref="run" />
    <property name="cronExpression" value="0/5 * * * * ?" />
</bean>

<bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean" destroy-method="destroy">
    <property name="triggers">
        <list>
            <ref bean="cronTrg" />
        </list>
    </property>
</bean>

推荐答案

您需要添加一个关闭钩子 - 请参阅在Spring 2.5中注册关闭挂钩。

You need to add a shutdown hook - see Registering a shutdown hook in Spring 2.5.

在您的情况下，您可能应该向webapp添加一个上下文监听器来执行此操作（监听器+实现类的web.xml条目）。

In your case, you probably should add a context listener to your webapp that does this (web.xml entry for the listener + implementing class).

使用close，这是最简单的。

Use close, it's easiest.

((YourClass)yourObject).close();

这篇关于Spring调度程序关闭错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！