我定义了一个Spring Batch作业,它运行一次就好了。但是,由于JOB_INSTANCE_ID的主键中存在重复条目,因此无法再次运行;
SEVERE: Job Terminated in error: PreparedStatementCallback; SQL [INSERT into BATCH_JOB_INSTANCE(JOB_INSTANCE_ID, JOB_NAME, JOB_KEY, VERSION) values (?, ?, ?, ?)]; Duplicate entry '0' for key 'PRIMARY'; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Duplicate entry '0' for key 'PRIMARY'
我已经读过,可以通过在作业上设置命令行参数来解决这个问题,例如
java -cp ${CLASSPATH} org.springframework.batch.core.launch.support.CommandLineJobRunner myJob.xml myJob date=20121025154016 -next
无论是否包含-next参数,它都不会运行该作业。
My Spring Batch配置如下所示(batch / launchContext.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:batch="http://www.springframework.org/schema/batch"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:util="http://www.springframework.org/schema/util"
xmlns:jdbc="http://springframework.org/schema/jdbc"
xsi:schemaLocation="http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.5.xsd
http://www.springframework.org/schema/batch http://www.springframework.org/schema/batch/spring-batch.xsd
http://springframework.org/schema/jdbc http://springframework.org/schema/jdbc/spring-jdbc.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<!-- Launch context: how to launch all of the jobs -->
<!-- Expects a data source configuration file to be used, with a DataSource bean
called "dataSource" -->
<!-- The data source for the jobs status -->
<import resource="dataSource.xml" />
<bean
id="jobRepository"
class="org.springframework.batch.core.repository.support.JobRepositoryFactoryBean">
<property
name="dataSource"
ref="dataSource" />
<property
name="databaseType"
value="MySQL" />
<property
name="transactionManager"
ref="transactionManager"></property>
</bean>
<bean
id="incrementer"
class="org.springframework.batch.core.launch.support.RunIdIncrementer" />
<bean
id="jobLauncher"
class="org.springframework.batch.core.launch.support.SimpleJobLauncher">
<property
name="jobRepository"
ref="jobRepository" />
</bean>
<bean
id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property
name="dataSource"
ref="dataSource" />
</bean>
<bean
id="jobExplorer"
class="org.springframework.batch.core.explore.support.JobExplorerFactoryBean">
<property
name="dataSource"
ref="dataSource" />
</bean>
</beans>
工作就像这样(在myJob.xml文件中)
....
<import resource="batch/launchContext.xml" />
...
<batch:job
id="myJob"
job-repository="jobRepository"
incrementer="incrementer">
<batch:step id="step1">
<batch:tasklet transaction-manager="transactionManager">
<batch:chunk
reader="myReader"
processor="myProcessor"
writer="myWriter"
commit-interval="10" />
</batch:tasklet>
</batch:step>
</batch:job>
理想情况下,我希望每次运行的作业都与运行日期/时间保持一致。有没有办法配置启动器自动执行此操作?
答案 0 :(得分:7)
我也将这个问题放在春季官方论坛上。我最终找到了自己的答案(一路上有一丝暗示);
http://forum.springsource.org/showthread.php?131347-How-to-re-run-a-job&p=428484#post428484
简而言之,问题是我从这三个表中删除了值'0';
因此,在清理Spring Batch Meta-Data表时(例如使用truncate或delete from ...),请确保以后执行以下命令;
INSERT INTO BATCH_STEP_EXECUTION_SEQ values(0);
INSERT INTO BATCH_JOB_EXECUTION_SEQ values(0);
INSERT INTO BATCH_JOB_SEQ values(0);