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我正在並行執行spring批處理作業,並使用SimpleAsyncTaskExecutor進行並行處理,並將throttle-limit設置爲default(缺省爲4)。 物品閱讀器正在讀取文本文件中的行,然後進行處理。 但是,正在發生的事情是文本文件中的一行正在處理4個不同的線程,使其執行單個塊4次。彈簧批量並行處理多次執行一個步驟
下面是我的batch.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"
xsi:schemaLocation="http://www.springframework.org/schema/batch http://www.springframework.org/schema/batch/spring-batch.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
<import resource="classpath*:/META-INF/spring/batch/override/**/*.xml" />
<bean id="businessReader" class="com.rbsgbm.rates.eodtasks.batch.reader.BusinessItemReader"/>
<bean id="businessProcessor" class="com.rbsgbm.rates.eodtasks.batch.processor.BusinessItemProcessor" />
<bean id="businessWriter" class="com.rbsgbm.rates.eodtasks.batch.writer.BusinessItemWriter" />
<bean id="deskReader" class="com.rbsgbm.rates.eodtasks.batch.reader.DeskItemReader"/>
<bean id="deskProcessor" class="com.rbsgbm.rates.eodtasks.batch.processor.DeskItemProcessor" />
<bean id="deskWriter" class="com.rbsgbm.rates.eodtasks.batch.writer.DeskItemWriter" />
<bean class="com.rbsgbm.rates.eodtasks.batch.Tasklet.TradeSnapTasklet" id="tradeSnapTasklet"/>
<bean class="com.rbsgbm.rates.eodtasks.batch.Tasklet.FoundryExtractTasklet" id="foundryExtractTasklet"/>
<bean id="simpleFireTasklet"
class="com.rbsgbm.rates.eodtasks.batch.Tasklet.SimpleFireTasklet" />
<bean id="mdxMarketDataSnapTasklet"
class="com.rbsgbm.rates.eodtasks.batch.Tasklet.MdxMarketDataSnapTasklet" />
<bean id="stepListener" class="org.springframework.batch.core.listener.StepExecutionListenerSupport" />
<bean id="restartJobListener" class="com.rbsgbm.rates.eodtasks.batch.listener.RestartListener"/>
<bean id="failedStepListener" class="com.rbsgbm.rates.eodtasks.batch.listener.FailedStepStepExecutionListener"/>
<bean id="taskExecutor"
class="org.springframework.core.task.SimpleAsyncTaskExecutor">
</bean>
<job id="simpleDojJob" xmlns="http://www.springframework.org/schema/batch">
<step id="processBusiness" next="simpleFireTask">
<tasklet>
<chunk reader="businessReader" processor="businessProcessor"
writer="businessWriter" commit-interval="1" />
</tasklet>
</step>
<step id="simpleFireTask" next="foundryTask">
<tasklet task-executor="taskExecutor">
<chunk reader="deskReader" processor="deskProcessor"
writer="deskWriter" commit-interval="1" />
</tasklet>
</step>
<step id="foundryTask">
<tasklet ref="foundryExtractTasklet"/>
<listeners>
<listener ref="stepListener"/>
<listener ref="restartJobListener"/>
<listener ref="failedStepListener"/>
</listeners>
</step>
</job>
</beans>
感謝Hansjoerg Wingeier提供的答案。我可以輕鬆地使讀取和寫入方法同步。 – KayV