为什么我的Spring@计划任务停止了？

Question

我在使用Spring 3.1.1，在WAS8.5环境中，使用Spring的@计划功能每天每8小时运行一次任务。它开始并运行了一段时间，然后无缘无故地停止。我的日志中没有任何内容表明失败。知道是什么导致了这种情况吗？现在已经发生过几次了。这不是由于服务器重启等原因。

package com.my.project.scheduler;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Timestamp;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;
import java.util.concurrent.TimeUnit;

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.sql.DataSource;

import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.ApplicationContext;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.web.context.ContextLoaderListener;

import com.my.project.scheduler.model.RetransmitEvent;

public class RetransmitTimer {    

    private static final Logger LOG = Logger.getLogger( RetransmitTimer.class );

    @Scheduled( cron = "${retransmit.cron.interval.1}" )
    public void retransmitSchedule1() {
        retransmit();
    }
    @Scheduled( cron = "${retransmit.cron.interval.2}" )
    public void retransmitSchedule2() {
        retransmit();
    }
    @Scheduled( cron = "${retransmit.cron.interval.3}" )
    public void retransmitSchedule3() {
        retransmit();
    }
    private void retransmit() {
        LOG.info( "############# AUTOMATIC RETRANSMIT EXECUTING ##############" );        
        try
        {
            [code to gather retransmitEvents omitted]
            if ( retransmitEvents.size() > 0 ) {
                LOG.info( "Total retransmits found=" + retransmitEvents.size() );
                submitRetransmits( retransmitEvents );
            }
        }    
        finally
        {    [method cleanup, etc]
            LOG.info( "############# AUTOMATIC RETRANSMIT COMPLETED ##############" );
        }
    }

    private void submitRetransmits( List<RetransmitEvent> retransmitEvents ) {
        ApplicationContext context = ContextLoaderListener.getCurrentWebApplicationContext();
        DataSource ds1 = (DataSource) context.getBean("jdbc/DS1");
        DataSource ds2 = (DataSource) context.getBean("jdbc/DS2");
        [rest of the code to process database updates omitted]
    }
}

我的应用程序上下文。xml

<?xml version="1.0" encoding="UTF-8"?>
<beans
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:task="http://www.springframework.org/schema/task"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
                        http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
                        http://www.springframework.org/schema/context
                        http://www.springframework.org/schema/context/spring-context.xsd
                        http://www.springframework.org/schema/task
                        http://www.springframework.org/schema/task/spring-task-3.0.xsd">

    <context:property-placeholder location="classpath:my-scheduler.properties" />
    <context:annotation-config/>
    <context:component-scan base-package="com.my.project" />

    <task:annotation-driven/> <!-- for the Scheduled annotations in the timer code -->

    <bean id="retransmitTimer" class="com.my.project.scheduler.RetransmitTimer" scope="singleton"/>

    <!-- The following Spring beans replace what would normally go into the web.xml file -->
    <!-- They're for the attachmentViewer.jar attachment retry process -->
    <bean id="jdbc/DS1" class="org.springframework.jndi.JndiObjectFactoryBean">
        <property name="jndiName" value="jdbc/DS1" />
        <property name="lookupOnStartup" value="false" />
        <property name="cache" value="true" />
        <property name="proxyInterface" value="javax.sql.DataSource" />
    </bean>

    <bean id="jdbc/DS2" class="org.springframework.jndi.JndiObjectFactoryBean">
        <property name="jndiName" value="jdbc/DS2" />
        <property name="lookupOnStartup" value="false" />
        <property name="cache" value="true" />
        <property name="proxyInterface" value="javax.sql.DataSource" />
    </bean>
</beans>

我的调度程序。属性

# Retransmit preferences
#   CRON parms: Second Minute Hour Day-of-Month Month Day-of-the-Week
#   So, we're set to run everyday at the top of the hour at 4am, 12pm and 8pm
retransmit.cron.interval.1=0 0 4 * * ?
retransmit.cron.interval.2=0 0 12 * * ?
retransmit.cron.interval.3=0 0 20 * * ?

我知道我可以在一行上每8小时设置一次CRON parm，但是用户可以在他们想要的方面获得非常有创造性的东西，所以我在中留下了3个条目。

以下是日志片段，显示它已经工作了几天。服务器于下午3月4日重新启动，此后再也没有重新启动过。

[2016-03-04 20:00:00,047] [pool-7-thread-1] INFO  com.excellus.blue2.scheduler.RetransmitTimer - ############# AUTOMATIC RETRANSMIT EXECUTING ##############
[2016-03-04 20:00:01,853] [pool-7-thread-1] INFO  com.excellus.blue2.scheduler.RetransmitTimer - ############# AUTOMATIC RETRANSMIT COMPLETED ##############
[2016-03-05 04:00:00,111] [pool-7-thread-1] INFO  com.excellus.blue2.scheduler.RetransmitTimer - ############# AUTOMATIC RETRANSMIT EXECUTING ##############
[2016-03-05 04:00:00,531] [pool-7-thread-1] INFO  com.excellus.blue2.scheduler.RetransmitTimer - ############# AUTOMATIC RETRANSMIT COMPLETED ##############
[2016-03-05 12:00:00,167] [pool-7-thread-1] INFO  com.excellus.blue2.scheduler.RetransmitTimer - ############# AUTOMATIC RETRANSMIT EXECUTING ##############
[2016-03-05 12:00:00,172] [pool-7-thread-1] INFO  com.excellus.blue2.scheduler.RetransmitTimer - ############# AUTOMATIC RETRANSMIT COMPLETED ##############
[2016-03-05 20:00:00,197] [pool-7-thread-1] INFO  com.excellus.blue2.scheduler.RetransmitTimer - ############# AUTOMATIC RETRANSMIT EXECUTING ##############
[2016-03-05 20:00:00,312] [pool-7-thread-1] INFO  com.excellus.blue2.scheduler.RetransmitTimer - ############# AUTOMATIC RETRANSMIT COMPLETED ##############
[2016-03-06 04:00:00,200] [pool-7-thread-1] INFO  com.excellus.blue2.scheduler.RetransmitTimer - ############# AUTOMATIC RETRANSMIT EXECUTING ##############
[2016-03-06 04:00:00,438] [pool-7-thread-1] INFO  com.excellus.blue2.scheduler.RetransmitTimer - ############# AUTOMATIC RETRANSMIT COMPLETED ##############
[2016-03-06 12:00:00,193] [pool-7-thread-1] INFO  com.excellus.blue2.scheduler.RetransmitTimer - ############# AUTOMATIC RETRANSMIT EXECUTING ##############
[2016-03-06 12:00:00,198] [pool-7-thread-1] INFO  com.excellus.blue2.scheduler.RetransmitTimer - ############# AUTOMATIC RETRANSMIT COMPLETED ##############
[2016-03-06 20:00:00,193] [pool-7-thread-1] INFO  com.excellus.blue2.scheduler.RetransmitTimer - ############# AUTOMATIC RETRANSMIT EXECUTING ##############
[2016-03-06 20:00:00,565] [pool-7-thread-1] INFO  com.excellus.blue2.scheduler.RetransmitTimer - ############# AUTOMATIC RETRANSMIT COMPLETED ##############
[2016-03-07 04:00:00,201] [pool-7-thread-1] INFO  com.excellus.blue2.scheduler.RetransmitTimer - ############# AUTOMATIC RETRANSMIT EXECUTING ##############
[2016-03-07 04:00:00,207] [pool-7-thread-1] INFO  com.excellus.blue2.scheduler.RetransmitTimer - ############# AUTOMATIC RETRANSMIT COMPLETED ##############
[2016-03-07 12:00:00,204] [pool-7-thread-1] INFO  com.excellus.blue2.scheduler.RetransmitTimer - ############# AUTOMATIC RETRANSMIT EXECUTING ##############
[2016-03-07 12:00:00,260] [pool-7-thread-1] INFO  com.excellus.blue2.scheduler.RetransmitTimer - ############# AUTOMATIC RETRANSMIT COMPLETED ##############
[2016-03-07 20:00:00,197] [pool-7-thread-1] INFO  com.excellus.blue2.scheduler.RetransmitTimer - ############# AUTOMATIC RETRANSMIT EXECUTING ##############
[2016-03-07 20:00:01,405] [pool-7-thread-1] INFO  com.excellus.blue2.scheduler.RetransmitTimer - ############# AUTOMATIC RETRANSMIT COMPLETED ##############
[2016-03-08 04:00:00,198] [pool-7-thread-1] INFO  com.excellus.blue2.scheduler.RetransmitTimer - ############# AUTOMATIC RETRANSMIT EXECUTING ##############
[2016-03-08 04:00:00,568] [pool-7-thread-1] INFO  com.excellus.blue2.scheduler.RetransmitTimer - ############# AUTOMATIC RETRANSMIT COMPLETED ##############

凌晨3/8点4分后不再输入。我还应该注意，在此期间没有找到调用子方法submitRetransmits（）的重传条目。

知道为什么这些预定任务会停止吗？提前谢谢。

Answer 1

事实证明，我的调度程序应用程序一直在运行。这是一个日志问题。我将日志记录与其他项目分离开来，结果显示它仍在正常运行。谢谢你的建议。

Answer 2

尝试发送kill-3以查看堆栈跟踪。可能有些进程是堆栈的，无法继续。您还可以检查您的传输是否有一些超时，如果没有，最好设置它。