FGr*_*reg 3 java spring spring-batch
我不确定我JobLauncherCommandLineRunner是否正确使用.我正在开发一个批处理作业,它将通过命令行调用,运行完成,然后停止.它从命令行获取1个参数,我正在使用:
当我通过命令行调用它时,例如:
java -Dspring.profiles.active=solr,cassandra -Dspring.config.location=/path/to/job.yml -jar myjob.jar jobParam=/path/to/file.csv
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应用程序似乎"永远"运行(至少在作业完成时).有没有配置可以在工作完成时关闭上下文?
目前我main很简单,我想保持这种方式.但也许我需要自定义逻辑来在作业完成后停止上下文?
@SpringBootApplication
public class MyJob {
public static void main(String[] args) {
SpringApplication.run(MyJob.class, args);
}
}
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FGr*_*reg 10
tldr;
把SpringApplication.exit(context);你后SpringApplication.run你的命令main的方法.
@SpringBootApplication
public class MyJob {
public static void main(String[] args) {
ApplicationContext context = SpringApplication.run(NingesterApplication.class, args);
System.exit(SpringApplication.exit(context));
}
}
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弄清楚了.有几个关键的事情要理解:
这ExitCodeGenerator(特别是它是一个JobExecutionExitCodeGenerator)将收集BatchStatus从每一个JobExecution链接到JobExecutionEvent秒.
该JobLauncherCommandLineRunner出版JobExecutionEvent了每次执行任务.
在JobLauncherCommandLineRunner启动工作作为应用程序上下文启动的一部分
因此,批处理作业将在SpringApplication.run(MyJob.class, args);返回应用程序上下文之前运行完成(因为作业是上下文启动的一部分).
所以,我需要做的就是在我的应用程序类中再添加一行:
@SpringBootApplication
public class MyJob {
private static final Logger log = LoggerFactory.getLogger(MyJob.class);
public static void main(String[] args) {
ApplicationContext context = SpringApplication.run(NingesterApplication.class, args);
// The batch job has finished by this point because the
// ApplicationContext is not 'ready' until the job is finished
// Also, use System.exit to force the Java process to finish with the exit code returned from the Spring App
System.exit(SpringApplication.exit(context));
}
}
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然后,确保您使用System.exit()以确保应用程序将退出时使用与BatchStatus序数值匹配的退出代码.
旁注:因为我看到,日志有点误导
但功能上它有效:
2018-01-18 12:47:58.363 INFO 1504 --- [ main] o.s.b.c.l.support.SimpleJobLauncher : Job: [SimpleJob: [name=myjob]] launched with the following parameters: [{jobParam=/path/to/file.csv}]
2018-01-18 12:47:58.399 INFO 1504 --- [ main] o.s.batch.core.job.SimpleStepHandler : Executing step: [step1]
2018-01-18 12:50:12.347 INFO 1504 --- [ main] o.s.b.c.l.support.SimpleJobLauncher : Job: [SimpleJob: [name=myjob]] completed with the following parameters: [{jobParam=/path/to/file.csv}] and the following status: [COMPLETED]
2018-01-18 12:50:12.349 INFO 1504 --- [ main] g.n.j.n.ningester.NingesterApplication : Started NingesterApplication in 136.813 seconds (JVM running for 137.195)
2018-01-18 12:50:12.350 INFO 1504 --- [ main] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@24313fcc: startup date [Thu Jan 18 12:47:55 PST 2018]; root of context hierarchy
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