RepositoryItemReader：java.util.ArrayList无法转换为org.springframework.data.domain.Page

我在spring批处理步骤中为阅读器设置ItemRepositoryReader。我想用findByScenarioBetween方法，它有两个参数min和max。RepositoryItemReader：java.util.ArrayList无法转换为org.springframework.data.domain.Page

我的回购

public interface FuneralPricingRepository extends JpaRepository<FuneralPricing, Long> { 

    @Query("select p from FuneralPricing p where p.scenario between ?1 and ?2") 
    List<FuneralPricing> findByScenarioBetween(Long min, Long max, Pageable pageable); 


}

我的读者

@Bean 
    @StepScope 
    public ItemReader<FuneralPricing> funeralPricingRepositoryReader(
      @Value("#{jobParameters[start]}") Long start, 
      @Value("#{jobParameters[end]}") Long end) { 
    RepositoryItemReader<FuneralPricing> repositoryItemReader = new RepositoryItemReader<>(); 
    repositoryItemReader.setPageSize(10); 
    repositoryItemReader.setSort(funeralPricingSort()); 
    repositoryItemReader.setRepository(funeralPricingRepository); 
    repositoryItemReader.setMaxItemCount(100); 
    repositoryItemReader.setMethodName("findByScenarioBetween"); 
    List parameters = new ArrayList(); 
    parameters.add(start); 
    parameters.add(end); 
    repositoryItemReader.setArguments(parameters); 
    return repositoryItemReader; 
    }

当我使用的findAll它的正常工作。但是，我不想每次都阅读所有的行。我不知道我是否在读者中遗漏了一些东西！谢谢。

java.lang.ClassCastException: java.util.ArrayList cannot be cast to org.springframework.data.domain.Page at org.springframework.batch.item.data.RepositoryItemReader.doPageRead(RepositoryItemReader.java:208) at org.springframework.batch.item.data.RepositoryItemReader.doRead(RepositoryItemReader.java:153) at org.springframework.batch.item.support.AbstractItemCountingItemStreamItemReader.read(AbstractItemCountingItemStreamItemReader.java:88) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:302) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:133) at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:121) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208) at com.sun.proxy.$Proxy120.read(Unknown Source) at org.springframework.batch.core.step.item.SimpleChunkProvider.doRead(SimpleChunkProvider.java:91) at org.springframework.batch.core.step.item.SimpleChunkProvider.read(SimpleChunkProvider.java:157) at org.springframework.batch.core.step.item.SimpleChunkProvider$1.doInIteration(SimpleChunkProvider.java:116) at org.springframework.batch.repeat.support.RepeatTemplate.getNextResult(RepeatTemplate.java:374) at org.springframework.batch.repeat.support.RepeatTemplate.executeInternal(RepeatTemplate.java:215) at org.springframework.batch.repeat.support.RepeatTemplate.iterate(RepeatTemplate.java:144) at org.springframework.batch.core.step.item.SimpleChunkProvider.provide(SimpleChunkProvider.java:110) at org.springframework.batch.core.step.item.ChunkOrientedTasklet.execute(ChunkOrientedTasklet.java:69) at org.springframework.batch.core.step.tasklet.TaskletStep$ChunkTransactionCallback.doInTransaction(TaskletStep.java:406) at org.sp

来源

2017-08-14 DIMAKATSO BOPAPE

你也可以使用findByScenarioBetween为什么又@Query？删除'@ Query'我觉得这是多余的。 – Barath

是的，谢谢，我删除了@Query。仍然得到java.lang.ClassCastException： –

您是否尝试过页面并调试它包含的内容？ – Barath

更新List<FuneralPricing>到Page<FuneralPricing>

public interface FuneralPricingRepository extends JpaRepository<FuneralPricing, Long> { 


    Page<FuneralPricing> findByScenarioBetween(Long min, Long max, Pageable pageable); 


}

来源

2017-08-14 10:14:42 Barath

RepositoryItemReader：java.util.ArrayList无法转换为org.springframework.data.domain.Page

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