Java - Spring-Batch和Quartz和Tomcat - 返回作业bean的缓存实例

我一直在尝试使用Quartz设置Spring-Batch作业,所有这些都在Tomcat容器中运行 . 我已经使用了Stackoverflow的各种帖子和各种文章 .

批处理作业设置为使用Quartz和CronExpression每分钟运行一次 .

现在的问题是实际的Spring批处理作业只运行一次 . 这是一个成功的运行,因为日志显示来自两个类的输出:

2016-03-09 11:20:00,047  INFO org.springframework.scheduling.quartz.SchedulerFactoryBean#0_Worker-1   RunFirstBatch.run  111 : RunFirstBatch().run() - Starting.................................[]
2016-03-09 11:20:00,047  INFO org.springframework.scheduling.quartz.SchedulerFactoryBean#0_Worker-1   RunFirstBatch.run  112 : RunFirstBatch().run() - CWD......................................[C:\Users\n0002501\AppData\Local\CI Eclipse for Java EE]

...removed for brevity...

2016-03-09 11:20:03,880  INFO org.springframework.scheduling.quartz.SchedulerFactoryBean#0_Worker-1   FirstBatch.execute  113 : FirstBatch().execute().................................................[** First Batch Job is Executing! **]
2016-03-09 11:20:03,880  INFO org.springframework.scheduling.quartz.SchedulerFactoryBean#0_Worker-1   FirstBatch.execute  114 : FirstBatch().execute() Step Contribution...............................[[StepContribution: read=0, written=0, filtered=0, readSkips=0, writeSkips=0, processSkips=0, exitStatus=EXECUTING]]
2016-03-09 11:20:03,880  INFO org.springframework.scheduling.quartz.SchedulerFactoryBean#0_Worker-1   FirstBatch.execute  115 : FirstBatch().execute() Chunk Context...................................[ChunkContext: attributes=[], complete=false, stepContext=SynchronizedAttributeAccessor: [], stepExecutionContext={batch.stepType=org.springframework.batch.core.step.tasklet.TaskletStep, batch.taskletType=com.lmig.batch.FirstBatch}, jobExecutionContext={}, jobParameters={}]

...removed for brevity...

2016-03-09 11:20:05,542  INFO org.springframework.scheduling.quartz.SchedulerFactoryBean#0_Worker-1   SimpleJobLauncher.run  136 : Job: [FlowJob: [name=firstBatchJob]] completed with the following parameters: [{}] and the following status: [COMPLETED]
2016-03-09 11:20:05,542  INFO org.springframework.scheduling.quartz.SchedulerFactoryBean#0_Worker-1   RunFirstBatch.run  126 : RunFirstBatch().run() - Exit Status..............................[COMPLETED]
2016-03-09 11:20:05,542  INFO org.springframework.scheduling.quartz.SchedulerFactoryBean#0_Worker-1   RunFirstBatch.run  145 : RunFirstBatch().run()............................................[finally]

问题是在所有后续运行中,Spring返回批处理作业类的缓存实例,并且不运行它表明它处于已完成状态:

2016-03-09 11:21:00,008  INFO org.springframework.scheduling.quartz.SchedulerFactoryBean#0_Worker-2   RunFirstBatch.run  111 : RunFirstBatch().run() - Starting.................................[]
2016-03-09 11:21:00,008  INFO org.springframework.scheduling.quartz.SchedulerFactoryBean#0_Worker-2   RunFirstBatch.run  112 : RunFirstBatch().run() - CWD......................................[C:\Users\n0002501\AppData\Local\CI Eclipse for Java EE]

...removed for brevity...

...Returning cached instance of singleton bean 'firstBatchJob'

...removed for brevity...

2016-03-09 11:21:01,730  INFO org.springframework.scheduling.quartz.SchedulerFactoryBean#0_Worker-2   SimpleStepHandler.shouldStart  217 : Step already complete or not restartable, so no action to execute: StepExecution: id=1, version=3, name=stepOne, status=COMPLETED, exitStatus=COMPLETED, readCount=0, filterCount=0, writeCount=0 readSkipCount=0, writeSkipCount=0, processSkipCount=0, commitCount=1, rollbackCount=0, exitDescription=
2016-03-09 11:21:01,730 DEBUG org.springframework.scheduling.quartz.SchedulerFactoryBean#0_Worker-2   SimpleFlow.resume  178 : Completed state=firstBatchJob.stepOne with status=COMPLETED
2016-03-09 11:21:01,730 DEBUG org.springframework.scheduling.quartz.SchedulerFactoryBean#0_Worker-2   SimpleFlow.resume  164 : Handling state=firstBatchJob.end1
2016-03-09 11:21:01,730 DEBUG org.springframework.scheduling.quartz.SchedulerFactoryBean#0_Worker-2   SimpleFlow.resume  178 : Completed state=firstBatchJob.end1 with status=COMPLETED
2016-03-09 11:21:01,730 DEBUG org.springframework.scheduling.quartz.SchedulerFactoryBean#0_Worker-2   AbstractJob.execute  305 : Job execution complete: JobExecution: id=1, version=1, startTime=Wed Mar 09 11:21:00 EST 2016, endTime=null, lastUpdated=Wed Mar 09 11:21:00 EST 2016, status=COMPLETED, exitStatus=exitCode=COMPLETED;exitDescription=, job=[JobInstance: id=0, version=0, Job=[firstBatchJob]], jobParameters=[{}]

...removed for brevity...

2016-03-09 11:21:02,050  INFO org.springframework.scheduling.quartz.SchedulerFactoryBean#0_Worker-2   SimpleJobLauncher.run  136 : Job: [FlowJob: [name=firstBatchJob]] completed with the following parameters: [{}] and the following status: [COMPLETED]
2016-03-09 11:21:02,050  INFO org.springframework.scheduling.quartz.SchedulerFactoryBean#0_Worker-2   RunFirstBatch.run  126 : RunFirstBatch().run() - Exit Status..............................[COMPLETED]
2016-03-09 11:21:02,050  INFO org.springframework.scheduling.quartz.SchedulerFactoryBean#0_Worker-2   RunFirstBatch.run  145 : RunFirstBatch().run()............................................[finally]

我试过的事情:

  • scope = "prototype"

  • restartable = "true"

  • 实现了ApplicationContextAware类以获取ApplicationContext .

  • 为beforeJob()和afterJob()实现了JobExecutionListener类 .

以下是详细信息:

<bean id="batchApplicationContext" class="com.lmig.cm.rore.refmigrator.BatchApplicationContextProvider" scope="singleton"/>    

<bean id="jobRepository" class="org.springframework.batch.core.repository.support.MapJobRepositoryFactoryBean">
    <property name="transactionManager" ref="transactionManager"/>
</bean>

<bean id="jobLauncher" class="org.springframework.batch.core.launch.support.SimpleJobLauncher" scope="prototype">
    <property name="jobRepository" ref="jobRepository" />
</bean>

<bean id="firstBatch" class="com.lmig.batch.FirstBatch" scope="prototype"/>
<batch:step id="firstBatchStepOne">
    <batch:tasklet ref="firstBatch"/>
</batch:step>
<batch:job id="firstBatchJob" restartable="true">
    <batch:step id="stepOne" parent="firstBatchStepOne"/>
</batch:job>

<bean id="runFirstBatch" class="com.lmig.cm.rore.refmigrator.RunFirstBatch">
    <property name="context" ref="batchApplicationContext" />
</bean>

RunFirstBatch类:

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.batch.core.Job;
import org.springframework.batch.core.JobExecution;
import org.springframework.batch.core.JobParameters;
import org.springframework.batch.core.launch.JobLauncher;

public class RunFirstBatch {

    public static final String ID              = RunFirstBatch.class.getName ();
    private String             SHORT_NAME      = "RunFirstBatch()";
    @SuppressWarnings("unused")
    private String                  SYSTEM_IDENTITY = String.valueOf ( System.identityHashCode ( this ) );

    private     Log                 log = LogFactory.getLog(RunFirstBatch.class.getName());

    //private     ApplicationContext  context = null;
    private     BatchApplicationContextProvider context;

    /**
     * Default constructor.
     */
    public RunFirstBatch() {
        this.context = new BatchApplicationContextProvider();
    }

    public  void    run() { 

        try { 
            getLog().info ( SHORT_NAME + ".run() - Starting.................................[" + "]" );
            getLog().info ( SHORT_NAME + ".run() - CWD......................................[" + System.getProperty ( "user.dir" ) + "]" );

            //context = WebApplicationContextUtils.getWebApplicationContext(this.getServletContext());
            //this.context = new ClassPathXmlApplicationContext("/RoreWebConfiguration.xml");

            //String[] springConfig  = {"/first-batch.xml"};
            //context = new ClassPathXmlApplicationContext ( springConfig );

            if ( getContext() != null ) { 
                if ( getContext().getApplicationContext () != null ) { 
                    JobLauncher jobLauncher = (JobLauncher)getContext().getApplicationContext ().getBean("jobLauncher");
                    Job job = (Job) getContext().getApplicationContext ().getBean("firstBatchJob");
                    JobExecution execution = jobLauncher.run ( job, new JobParameters() );
                    //jobLauncher.run ( job, new JobParameters() );
                    getLog().info ( SHORT_NAME + ".run() - Exit Status..............................[" + execution.getStatus () + "]" );
                }
                else { 
                    getLog().info ( SHORT_NAME + ".run() - ApplicationContext is NULL...............[NULL]" );

                }
            }
            else { 
                getLog().info ( SHORT_NAME + ".run() - BatchApplicationContext is NULL..........[NULL]" );

            }

        }
        catch ( Exception ltheXcp ) { 
            getLog().error ( SHORT_NAME + ".run() - Exception ...............................[" + ltheXcp.getMessage () + "]" );
            getLog().error ( ltheXcp );

        }
        finally { 
            getLog().info ( SHORT_NAME + ".run()............................................[finally]" );
            //if (context != null) {
            //    context = null;
            //}

        }
    }

    public Log getLog() {
        return log;
    }

    public void setLog(Log log) {
        this.log = log;
    }

    public BatchApplicationContextProvider getContext() {
        return context;
    }

    public void setContext(BatchApplicationContextProvider context) {
        this.context = context;
    }


}

FirstBatch类:

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.batch.core.StepContribution;
import org.springframework.batch.core.scope.context.ChunkContext;
import org.springframework.batch.core.step.tasklet.Tasklet;
import org.springframework.batch.repeat.RepeatStatus;

import com.lmig.cm.rore.refmigrator.CMRoreReferenceMigrator;

public class FirstBatch implements Tasklet {

    public static final String ID              = FirstBatch.class.getName ();
    private String             SHORT_NAME      = "FirstBatch()";
    @SuppressWarnings("unused")
    private String              SYSTEM_IDENTITY = String.valueOf ( System.identityHashCode ( this ) );

    private     Log             log = LogFactory.getLog(FirstBatch.class.getName());

    public FirstBatch() {
        // TODO Auto-generated constructor stub
    }

    public FirstBatch( Log theLog ) {
        this.log = theLog;
    }

    /* (non-Javadoc)
     * @see org.springframework.batch.core.step.tasklet.Tasklet#execute(org.springframework.batch.core.StepContribution, org.springframework.batch.core.scope.context.ChunkContext)
     */
    @Override
    public RepeatStatus execute(StepContribution arg0, ChunkContext arg1)
        throws Exception {
        getLog().info(SHORT_NAME + ".execute().................................................[** First Batch Job is Executing! **]");
        getLog().info(SHORT_NAME + ".execute() Step Contribution...............................[" + arg0.toString () + "]");
        getLog().info(SHORT_NAME + ".execute() Chunk Context...................................[" + arg1.toString () + "]");
        return RepeatStatus.FINISHED;
        //return RepeatStatus.CONTINUABLE;

    }

    public Log getLog() {
        return log;
    }

    public void setLog(Log log) {
        this.log = log;
    }


}

我怀疑这很简单,但我似乎无法找到正确的设置,属性或选项,以使其重新开始工作 .

提前,adym


根据迈克尔的回答解决方案:

  • Spring Batch 3.0.2

  • JDK 1.7-79

  • Spring 季3.2.14

  • 石英2.2.2

  • Tomcat 6.0.44

解决方案是在JobParameters()中简单地提供至少一个JobParameter,它允许Spring-Batch“唯一地”识别一个JobInstance与另一个JobInstance . 我只是将当前日期/时间用作字符串:

在RunFirstBatch.run()方法中添加以下代码:

SimpleDateFormat    theFormat = new SimpleDateFormat ( "yyyy-MM-dd-HH-mm-ss" );

        if ( getBatchContext ().getApplicationContext () != null ) { 
            if ( getBatchContext ().getApplicationContext () != null ) { 
                JobLauncher     jobLauncher = (JobLauncher)getBatchContext ().getApplicationContext ().getBean("jobLauncher");
                Job             job = (Job) getBatchContext ().getApplicationContext ().getBean("firstBatchJob");

                // JOBPARAMETERS : Build the job parameters...
                // 
                Date            theDate = new Date();
                // format the date as yyyy-MM-dd-HH-mm-ss 
                String          theJobId = theFormat.format ( theDate );
                // job parameter (single) from the formatted date...
                JobParameter    idParm = new JobParameter ( theJobId );
                // parameters container...used for the JobParameters
                // constructor...
                Map<String,JobParameter> mapParms = new HashMap<String,JobParameter> ();
                mapParms.put ( "1", idParm );

                JobParameters   theParms = new JobParameters (mapParms);

                getLog().info ( SHORT_NAME + ".run() - Job Id...................................[" + theJobId + "]" );


                JobExecution    execution = jobLauncher.run ( job, theParms );
                //execution.setExitStatus ( ExitStatus.UNKNOWN );
                //jobLauncher.run ( job, new JobParameters() );
                getLog().info ( SHORT_NAME + ".run() - Exit Status..............................[" + execution.getStatus () + "]" );
            }
            else { 
                getLog().info ( SHORT_NAME + ".run() - ApplicationContext is NULL...............[NULL]" );

            }
        }
        else { 
            getLog().info ( SHORT_NAME + ".run() - BatchApplicationContext is NULL..........[NULL]" );

        }

回答(1)

2 years ago

保持RepeatStatus.FINISHED,但看看https://docs.spring.io/spring-batch/reference/html/domain.html#domainJobParameters

“一个JobInstance如何区别于另一个?”答案是:JobParameters . JobParameters是一组用于启动批处理作业的参数 .

因此, Contract 可以定义为:JobInstance =识别JobParameters的作业 . 这允许开发人员有效地控制JobInstance的定义方式,因为它们控制传入的参数 .

...所以想想一个识别工作参数(随机,唯一,可能是Date.getTime())?