当使用modular = true

时间:2018-06-15 16:04:45

标签: java spring spring-boot spring-batch

我正在尝试使用Spring Batch进行工作。我在两个独立的配置中有两个作业tempJob和tempJob2。当尝试使用命令行参数(-Dspring.batch.job.names = tempJob)运行tempJob时,SpringBatch尝试运行tempJob两次,我得到以下错误

  

2018-06-15 11:36:37.956 INFO 14436 --- [主要]   o.s.b.c.l.support.SimpleJobLauncher:Job:[SimpleJob:   [name = tempJob]]使用以下参数完成:   [{TimeStamp = 06152018 11:36:30}]以及以下状态:[已完成]   2018-06-15 11:36:38.049 INFO 14436 --- [主要]   ConditionEvaluationReportLoggingListener:

     

启动ApplicationContext时出错。显示条件报告   使用' debug'重新运行您的应用程序启用。 2018-06-15 11:36:38.058   ERROR 14436 --- [main] o.s.boot.SpringApplication
  :应用程序运行失败

     

java.lang.IllegalStateException:无法执行CommandLineRunner     在   org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:800)   [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE] at   org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:781)   [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE] at   org.springframework.boot.SpringApplication.run(SpringApplication.java:335)   [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE] at   org.springframework.boot.SpringApplication.run(SpringApplication.java:1255)   [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE] at   org.springframework.boot.SpringApplication.run(SpringApplication.java:1243)   [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE] at   com.example.springbatchdemo.SpringbatchdemoApplication.main(SpringbatchdemoApplication.java:22)   [classes /:na]引起:   org.springframework.batch.core.repository.JobInstanceAlreadyCompleteException:   作业实例已存在且已完成   parameters = {TimeStamp = 06152018 11:36:30}。如果你想运行这份工作   再次,改变参数。在   org.springframework.batch.core.repository.support.SimpleJobRepository.createJobExecution(SimpleJobRepository.java:130)   〜[spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE] at   sun.reflect.NativeMethodAccessorImpl.invoke0(原生方法)   〜[na:1.8.0_60] at   sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)   〜[na:1.8.0_60] at   sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)   〜[na:1.8.0_60] at java.lang.reflect.Method.invoke(Method.java:497)   〜[na:1.8.0_60] at   org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:343)   〜[spring-aop-5.0.7.RELEASE.jar:5.0.7.RELEASE] at   org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:197)   〜[spring-aop-5.0.7.RELEASE.jar:5.0.7.RELEASE] at   org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)   〜[spring-aop-5.0.7.RELEASE.jar:5.0.7.RELEASE] at   org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:294)   〜[spring-tx-5.0.7.RELEASE.jar:5.0.7.RELEASE] at   org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98)   〜[spring-tx-5.0.7.RELEASE.jar:5.0.7.RELEASE] at   org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185)   〜[spring-aop-5.0.7.RELEASE.jar:5.0.7.RELEASE] at   org.springframework.batch.core.repository.support.AbstractJobRepositoryFactoryBean $ 1.invoke(AbstractJobRepositoryFactoryBean.java:181)   〜[spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE] at   org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185)   〜[spring-aop-5.0.7.RELEASE.jar:5.0.7.RELEASE] at   org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212)   〜[spring-aop-5.0.7.RELEASE.jar:5.0.7.RELEASE] at   com.sun.proxy。$ Proxy48.createJobExecution(Unknown Source)〜[na:na] at   org.springframework.batch.core.launch.support.SimpleJobLauncher.run(SimpleJobLauncher.java:131)   〜[spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE] at   org.springframework.boot.autoconfigure.batch.JobLauncherCommandLineRunner.execute(JobLauncherCommandLineRunner.java:163)   〜[spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE] at   org.springframework.boot.autoconfigure.batch.JobLauncherCommandLineRunner.executeRegisteredJobs(JobLauncherCommandLineRunner.java:148)   〜[spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE] at   org.springframework.boot.autoconfigure.batch.JobLauncherCommandLineRunner.launchJobFromProperties(JobLauncherCommandLineRunner.java:135)   〜[spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE] at   org.springframework.boot.autoconfigure.batch.JobLauncherCommandLineRunner.run(JobLauncherCommandLineRunner.java:128)   〜[spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE] at   org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:797)   [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE] ... 5个常见帧   省略

     

2018-06-15 11:36:38.060 INFO 14436 --- [主要]   s.c.a.AnnotationConfigApplicationContext:结束   org.springframework.context.annotation.AnnotationConfigApplicationContext@770c2e6b:   启动日期[Fri Jun 15 11:36:31 EDT 2018];上下文层次结构的根   2018-06-15 11:36:38.061 INFO 14436 --- [主要]   o.s.c.support.DefaultLifecycleProcessor:正在停止bean   -2147482648 2018-06-15 11:36:38.062 INFO 14436 --- [main] ory $ ResourceAnnotationApplicationContext:Closing   ResourceAnnotationApplicationContext:com.example.springbatchdemo.config.TempConfig   2018-06-15 11:36:38.063 INFO 14436 --- [主要]   ory $ ResourceAnnotationApplicationContext:关闭   ResourceAnnotationApplicationContext:com.example.springbatchdemo.config.TempConfig2   2018-06-15 11:36:38.064 INFO 14436 --- [主要]   o.s.j.e.a.AnnotationMBeanExporter:取消注册JMX暴露   关机时的豆子2018-06-15 11:36:38.065 INFO 14436 --- [
  main] o.s.j.e.a.AnnotationMBeanExporter:取消注册   JMX暴露的豆2018-06-15 11:36:38.065 INFO 14436 --- [
  main] com.zaxxer.hikari.HikariDataSource:HikariPool-1 -   关机开始... 2018-06-15 11:36:38.098 INFO 14436 --- [
  main] com.zaxxer.hikari.HikariDataSource:HikariPool-1 -   关机完成。

以下是我的Spring Batch配置 这是我的主要课程

@SpringBootApplication
@EnableBatchProcessing(modular=true)
public class SpringbatchdemoApplication {

    public static void main(String[] args) {
        String[] params = addTimestampAsParameter(args);
        SpringApplication.run(SpringbatchdemoApplication.class, params);
    }

     @Bean
     public ApplicationContextFactory runTempJob1() {
        return new GenericApplicationContextFactory(TempConfig.class);
     }

     @Bean
     public ApplicationContextFactory runTempJob2() {
        return new GenericApplicationContextFactory(TempConfig2.class);
     }


    public static String[] addTimestampAsParameter(final String[] args){
        String[] params = null;
        if(null != args){
            params = new String[args.length+1];
            for(int i=0;i<args.length;i++){
                params[i]=args[i];
            }
        }else{
            params = new String[1];
        }
        SimpleDateFormat sdf = new SimpleDateFormat("MMddyyyy hh:mm:ss");
        String timeStamp = sdf.format(new Date());
        params[params.length-1] = String.format("TimeStamp=%s", timeStamp);
        return params;
    }
}

以下是我的配置类

@Configuration
public class TempConfig {

    @Autowired
    JobBuilderFactory jobBuilder;

    @Autowired
    StepBuilderFactory stepBuilder;

    @Bean
    public Tasklet sampleTask(){
        return new Tasklet() {

            @Override
            public RepeatStatus execute(StepContribution arg0, ChunkContext arg1) throws Exception {
                System.out.println("Executed Temp Step of TempConfig Job -> TempJob");
                return RepeatStatus.FINISHED;
            }
        };
    }

    @Bean
    public Step tempStep(Tasklet sampleTask){
        return stepBuilder.get("tempStep").tasklet(sampleTask).build();
    }

    @Bean
    public Job tempJob(){
        return jobBuilder.get("tempJob")
        .start(tempStep(null))
        .build();
    }

}

和第二个作业配置

@Configuration
    public class TempConfig2 {

        @Autowired
        JobBuilderFactory jobBuilder;

        @Autowired
        StepBuilderFactory stepBuilder;
        @Bean
        public Step tempStep1(){
            return stepBuilder.get("tempStep1").tasklet(new Tasklet() {

                @Override
                public RepeatStatus execute(StepContribution arg0, ChunkContext arg1) throws Exception {
                    System.out.println("Executed Temp Step of TempConfig2 Job -> TempJob1");
                    return RepeatStatus.FINISHED;
                }
            }).build();
        }

        @Bean
        public Job tempJob1(){
            return jobBuilder.get("tempJob1")
            .start(tempStep1())
            .build();
        }

    }

当我进一步研究时,我发现,在给出-Dspring.batch.job.names时,SpringBatch使用JobLauncherCommandLineRunner.launchJobFromProperties()方法来执行作业。此方法尝试使用executeLocalJobs(jobParameters)和executeRegisteredJobs(jobParameters)执行作业; 在调试时,我发现我的工作正由两种方法执行。

是否有任何解决方案只使用命令行参数(modular = true)运行一次作业。如果您需要更多信息,请提供帮助并告知。

1 个答案:

答案 0 :(得分:0)

正如@akhil-khandelwal 所说,从 (modular=true) 注释中删除 @EnableBatchProcessing 可以解决问题。它为我解决了。