Question

我们正在使用CommandLineJobRunner来执行Spring Batch作业。我们在命令行上使用-next：

java -Dlog4j.configuration=file:./prop/log4j.properties -Dlogfile=logfile_load_data -jar EtlLoadData.jar loaddata_etl_config.xml loaddata_etl_job -next

我们开始出现错误：

Job Terminated in error: A job instance already exists and is complete for parameters={run.id=10}.  If you want to run this job again, change the parameters. 

org.springframework.batch.core.repository.JobInstanceAlreadyCompleteException: A job instance already exists and is complete for parameters={run.id=10}.  If you want to run this job again, change the parameters.
    at  org.springframework.batch.core.repository.support.SimpleJobRepository.createJobExecution(SimpleJobRepository.java:122)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.batch.core.repository.support.AbstractJobRepositoryFactoryBean$1.invoke(AbstractJobRepositoryFactoryBean.java:168)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
at $Proxy14.createJobExecution(Unknown Source)
at org.springframework.batch.core.launch.support.SimpleJobLauncher.run(SimpleJobLauncher.java:111)
at org.springframework.batch.core.launch.support.CommandLineJobRunner.start(CommandLineJobRunner.java:349)
at org.springframework.batch.core.launch.support.CommandLineJobRunner.main(CommandLineJobRunner.java:574)

我认为如果你使用-next选项运行，这应该不是问题。有什么想法吗？

作为临时解决方法，我清理了数据库中的SpringBatch表，但我不希望再次发生这种情况。

Answer 1

不知道-next选项。

最快的方法是将当前时间戳作为参数传递给您的作业。这样，它将是独特的，不会真正干扰你的工作。

Answer 2

使用de -next选项，您应该设置JobParametersIncrementer Implementation，

在这个例子中我使用 - ＆gt;新的RunIdIncrementer以避免消息：作业实例已存在且参数已完成

@Autowired
private JobBuilderFactory jobs;
...
@Bean(name=JOB_NAME)
public Job job() {        

    return jobs.get(JOB_NAME)
               .start(this.login())
               .next(this.launchDuke())
               .incrementer(new RunIdIncrementer())
               .build();
}

SpringBatch CommandLineJobRunner -next使用旧的run.id.

2 个答案: