Spring-Batch没有将元数据持久化到数据库？

  • Z时代
  • 2024-01-10
  • 分类：问答

我想创建一个spring-batch作业，但是我想在没有任何数据库持久性的情况下运行它。不幸的是，spring-batch要求以metadata某种方式将作业周期写入数据库，从而迫使我至少提供某种带有transactionmanager和Entitymanager的数据库。

是否可以防止元数据并独立于txmanagers和数据库运行？

更新：

ERROR org.springframework.batch.core.job.AbstractJob: Encountered fatal error executing job
java.lang.NullPointerException
    at org.springframework.batch.core.repository.dao.MapJobExecutionDao.synchronizeStatus(MapJobExecutionDao.java:158) ~[spring-batch-core-3.0.1.RELEASE.jar:3.0.1.RELEASE]
    at org.springframework.batch.core.repository.support.SimpleJobRepository.update(SimpleJobRepository.java:161) ~[spring-batch-core-3.0.1.RELEASE.jar:3.0.1.RELEASE]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_51]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[?:1.7.0_51]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_51]
    at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_51]
    at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) ~[spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) ~[spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) ~[spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:98) ~[spring-tx-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:262) ~[spring-tx-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:95) ~[spring-tx-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207) ~[spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at com.sun.proxy.$Proxy134.update(Unknown Source) ~[?:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_51]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[?:1.7.0_51]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_51]
    at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_51]
    at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) ~[spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) ~[spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) ~[spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.batch.core.configuration.annotation.SimpleBatchConfiguration$PassthruAdvice.invoke(SimpleBatchConfiguration.java:127) ~[spring-batch-core-3.0.1.RELEASE.jar:3.0.1.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207) ~[spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at com.sun.proxy.$Proxy134.update(Unknown Source) ~[?:?]
    at org.springframework.batch.core.job.AbstractJob.updateStatus(AbstractJob.java:416) ~[spring-batch-core-3.0.1.RELEASE.jar:3.0.1.RELEASE]
    at org.springframework.batch.core.job.AbstractJob.execute(AbstractJob.java:299) [spring-batch-core-3.0.1.RELEASE.jar:3.0.1.RELEASE]
    at org.springframework.batch.core.launch.support.SimpleJobLauncher$1.run(SimpleJobLauncher.java:135) [spring-batch-core-3.0.1.RELEASE.jar:3.0.1.RELEASE]
    at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50) [spring-core-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.batch.core.launch.support.SimpleJobLauncher.run(SimpleJobLauncher.java:128) [spring-batch-core-3.0.1.RELEASE.jar:3.0.1.RELEASE]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_51]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[?:1.7.0_51]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_51]
    at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_51]
    at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) [spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) [spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) [spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.batch.core.configuration.annotation.SimpleBatchConfiguration$PassthruAdvice.invoke(SimpleBatchConfiguration.java:127) [spring-batch-core-3.0.1.RELEASE.jar:3.0.1.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) [spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207) [spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at com.sun.proxy.$Proxy50.run(Unknown Source) [?:?]

回答：

我回到我自己的问题上，因为该解决方案不再起作用。从spring-batch-1.5.3开始，使用方法如下：

@SpringBoot" title="SpringBoot">SpringBootApplication(exclude = {DataSourceAutoConfiguration.class})
...
    @Bean
    public PlatformTransactionManager transactionManager() {
        return new ResourcelessTransactionManager();
    }
}

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