Spring 弹簧圈

第一步，我在Spring Batch中有一个简单的配置：

<batch:job id="collaborationJob" >
    <batch:step id="collaborationJobStep1">
        <batch:tasklet>
            <batch:chunk reader="collaborationAlertReader" processor="WriteCollaborationPruningProcessor" writer="alertCollaborationPruningWriter"
                commit-interval="10">
            </batch:chunk>
        </batch:tasklet>
        <batch:next on="*" to="collaborationJobStep2" />
        <batch:next on="FAILED" to="collaborationJobStep4"/>
    </batch:step>

如果在itemReader中读取的行数<10，则一切正常，但如果行数>=10，则在重复循环中输入：

2015-09-29 17:02:40,782 DEBUG [org.springframework.batch.core.step.tasklet.TaskletStep] - <Saving step execution before commit: StepExecution: id=1332, version=878, name=collaborationJobStep1, status=STARTED, exitStatus=EXECUTING, readCount=8780, filterCount=0, writeCount=8780 readSkipCount=0, writeSkipCount=0, processSkipCount=0, commitCount=878, rollbackCount=0, exitDescription=>

2015-09-29 17:02:40,786 DEBUG [org.springframework.batch.repeat.support.RepeatTemplate] - <Repeat operation about to start at count=879>

2015-09-29 17:02:40,786 DEBUG [org.springframework.batch.core.scope.context.StepContextRepeatCallback] - <Preparing chunk execution for StepContext: org.springframework.batch.core.scope.context.StepContext@664020c7>

2015-09-29 17:02:40,786 DEBUG [org.springframework.batch.core.scope.context.StepContextRepeatCallback] - <Chunk execution starting: queue size=0>

2015-09-29 17:02:40,787 DEBUG [org.springframework.batch.repeat.support.RepeatTemplate] - <Starting repeat context.>

2015-09-29 17:02:40,787 DEBUG [org.springframework.batch.repeat.support.RepeatTemplate] - <Repeat operation about to start at count=1>

2015-09-29 17:02:40,791 DEBUG [org.springframework.batch.repeat.support.RepeatTemplate] - <Repeat operation about to start at count=2>

2015-09-29 17:02:40,791 DEBUG [org.springframework.batch.repeat.support.RepeatTemplate] - <Repeat operation about to start at count=3>

2015-09-29 17:02:40,791 DEBUG [org.springframework.batch.repeat.support.RepeatTemplate] - <Repeat operation about to start at count=4>

2015-09-29 17:02:40,791 DEBUG [org.springframework.batch.repeat.support.RepeatTemplate] - <Repeat operation about to start at count=5>

2015-09-29 17:02:40,791 DEBUG [org.springframework.batch.repeat.support.RepeatTemplate] - <Repeat operation about to start at count=6>

2015-09-29 17:02:40,791 DEBUG [org.springframework.batch.repeat.support.RepeatTemplate] - <Repeat operation about to start at count=7>

2015-09-29 17:02:40,791 DEBUG [org.springframework.batch.repeat.support.RepeatTemplate] - <Repeat operation about to start at count=8>

2015-09-29 17:02:40,791 DEBUG [org.springframework.batch.repeat.support.RepeatTemplate] - <Repeat operation about to start at count=9>

2015-09-29 17:02:40,791 DEBUG [org.springframework.batch.repeat.support.RepeatTemplate] - <Repeat operation about to start at count=10>

2015-09-29 17:02:40,791 DEBUG [org.springframework.batch.repeat.support.RepeatTemplate] - <Repeat is complete according to policy and result value.>

2015-09-29 17:02:40,793 DEBUG [org.springframework.batch.core.step.item.ChunkOrientedTasklet] - <Inputs not busy, ended: false>

2015-09-29 17:02:40,793 DEBUG [org.springframework.batch.core.step.tasklet.TaskletStep] - <Applying contribution: [StepContribution: read=10, written=10, filtered=0, readSkips=0, writeSkips=0, processSkips=0, exitStatus=EXECUTING]>

2015-09-29 17:02:40782调试[org.springframework.batch.core.step.tasklet.TaskletStep]-
2015-09-29 17:02:40786调试[org.springframework.batch.repeat.support.RepeatTemplate]-
2015-09-29 17:02:40786调试[org.springframework.batch.core.scope.context.StepContextRepeatCallback]-
2015-09-29 17:02:40786调试[org.springframework.batch.core.scope.context.StepContextRepeatCallback]-
2015-09-29 17:02:40787调试[org.springframework.batch.repeat.support.RepeatTemplate]-
2015-09-29 17:02:40787调试[org.springframework.batch.repeat.support.RepeatTemplate]-
2015-09-29 17:02:40791调试[org.springframework.batch.repeat.support.RepeatTemplate]-
2015-09-29 17:02:40791调试[org.springframework.batch.repeat.support.RepeatTemplate]-
2015-09-29 17:02:40791调试[org.springframework.batch.repeat.support.RepeatTemplate]-
2015-09-29 17:02:40791调试[org.springframework.batch.repeat.support.RepeatTemplate]-
2015-09-29 17:02:40791调试[org.springframework.batch.repeat.support.RepeatTemplate]-
2015-09-29 17:02:40791调试[org.springframework.batch.repeat.support.RepeatTemplate]-
2015-09-29 17:02:40791调试[org.springframework.batch.repeat.support.RepeatTemplate]-
2015-09-29 17:02:40791调试[org.springframework.batch.repeat.support.RepeatTemplate]-
2015-09-29 17:02:40791调试[org.springframework.batch.repeat.support.RepeatTemplate]-
2015-09-29 17:02:40791调试[org.springframework.batch.repeat.support.RepeatTemplate]-
2015-09-29 17:02:40793调试[org.springframework.batch.core.step.item.ChunkOrientedTasklet]-
2015-09-29 17:02:40793调试[org.springframework.batch.core.step.tasklet.TaskletStep]-

我的配置有什么问题？ 提前谢谢

---

Giorgio

应用于区块的某些策略（甚至

DefaultResultCompletionPolicy

）正在等待读取结束（

read（）

读取器的方法需要在不再读取时返回

null

）

---

因此，如果在读取完成后返回

null

（例如，如果

read

方法返回空列表，则步骤将进入无限循环），请检查您的读取器中的

read

方法

collaborationerReader

。

您找到解决方案了吗？我现在也有同样的问题。