Question

我正在尝试在我容易出错的项目阅读器中构建重试。我已经设置了一个小POC来测试一切是否正常，但是我无法重试。这是我做的：

@Configuration
@EnableBatchProcessing
public static class TestConfiguration {

    // other beans

    @Bean
    @Qualifier("importFullJob")
    public Job importFullJob(ItemReader itemReader) {
        TaskletStep mockStep = stepBuilderFactory.get("mockStep")
                .chunk(1)
                .faultTolerant()
                .retry(RestClientException.class)
                .retryLimit(10)
                .reader(itemReader)
                .processor(item -> "processed")
                .writer(items -> {
                })
                .build();

        return jobBuilderFactory.get("importFullJob").start(mockStep).build();
    }

    @Bean
    @JobScope
    public ItemReader itemReader() {
        return new ItemReader() {

            @Override
            public Object read() throws Exception {
                System.out.println("try read");

                throw new RestClientException("booom");
            }
        };
    }
}

我原本期待对ItemReader.read（）进行10次调用，但我只得到一次调用和此异常：

org.springframework.batch.core.step.skip.NonSkippableReadException: Non-skippable exception during read
    at org.springframework.batch.core.step.item.FaultTolerantChunkProvider.read(FaultTolerantChunkProvider.java:105) ~[spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
    at org.springframework.batch.core.step.item.SimpleChunkProvider$1.doInIteration(SimpleChunkProvider.java:116) ~[spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
    at org.springframework.batch.repeat.support.RepeatTemplate.getNextResult(RepeatTemplate.java:374) ~[spring-batch-infrastructure-3.0.7.RELEASE.jar:3.0.7.RELEASE]
    at org.springframework.batch.repeat.support.RepeatTemplate.executeInternal(RepeatTemplate.java:215) ~[spring-batch-infrastructure-3.0.7.RELEASE.jar:3.0.7.RELEASE]
    at org.springframework.batch.repeat.support.RepeatTemplate.iterate(RepeatTemplate.java:144) ~[spring-batch-infrastructure-3.0.7.RELEASE.jar:3.0.7.RELEASE]
    at org.springframework.batch.core.step.item.SimpleChunkProvider.provide(SimpleChunkProvider.java:110) ~[spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
    at org.springframework.batch.core.step.item.ChunkOrientedTasklet.execute(ChunkOrientedTasklet.java:69) ~[spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
    at org.springframework.batch.core.step.tasklet.TaskletStep$ChunkTransactionCallback.doInTransaction(TaskletStep.java:406) ~[spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
    at org.springframework.batch.core.step.tasklet.TaskletStep$ChunkTransactionCallback.doInTransaction(TaskletStep.java:330) ~[spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
    at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:133) ~[spring-tx-4.2.7.RELEASE.jar:4.2.7.RELEASE]
    at org.springframework.batch.core.step.tasklet.TaskletStep$2.doInChunkContext(TaskletStep.java:271) ~[spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
    at org.springframework.batch.core.scope.context.StepContextRepeatCallback.doInIteration(StepContextRepeatCallback.java:81) ~[spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
    at org.springframework.batch.repeat.support.RepeatTemplate.getNextResult(RepeatTemplate.java:374) ~[spring-batch-infrastructure-3.0.7.RELEASE.jar:3.0.7.RELEASE]
    at org.springframework.batch.repeat.support.RepeatTemplate.executeInternal(RepeatTemplate.java:215) ~[spring-batch-infrastructure-3.0.7.RELEASE.jar:3.0.7.RELEASE]
    at org.springframework.batch.repeat.support.RepeatTemplate.iterate(RepeatTemplate.java:144) ~[spring-batch-infrastructure-3.0.7.RELEASE.jar:3.0.7.RELEASE]
    at org.springframework.batch.core.step.tasklet.TaskletStep.doExecute(TaskletStep.java:257) ~[spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
    at org.springframework.batch.core.step.AbstractStep.execute(AbstractStep.java:200) [spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
    at org.springframework.batch.core.job.SimpleStepHandler.handleStep(SimpleStepHandler.java:148) [spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
    at org.springframework.batch.core.job.AbstractJob.handleStep(AbstractJob.java:392) [spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
    at org.springframework.batch.core.job.SimpleJob.doExecute(SimpleJob.java:135) [spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
    at org.springframework.batch.core.job.AbstractJob.execute(AbstractJob.java:306) [spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
    at org.springframework.batch.core.launch.support.SimpleJobLauncher$1.run(SimpleJobLauncher.java:135) [spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
    at java.lang.Thread.run(Thread.java:745) [?:1.8.0_72]
Caused by: org.springframework.web.client.RestClientException: buuuum
    at org.woezelmann.batch.starter.FullImportStarterIT$TestConfiguration$1.read(FullImportStarterIT.java:256) ~[test-classes/:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_72]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_72]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_72]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_72]
    at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:302) ~[spring-aop-4.2.7.RELEASE.jar:4.2.7.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) ~[spring-aop-4.2.7.RELEASE.jar:4.2.7.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) ~[spring-aop-4.2.7.RELEASE.jar:4.2.7.RELEASE]
    at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:133) ~[spring-aop-4.2.7.RELEASE.jar:4.2.7.RELEASE]
    at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:121) ~[spring-aop-4.2.7.RELEASE.jar:4.2.7.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.2.7.RELEASE.jar:4.2.7.RELEASE]
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208) ~[spring-aop-4.2.7.RELEASE.jar:4.2.7.RELEASE]
    at com.sun.proxy.$Proxy68.read(Unknown Source) ~[?:?]
    at org.springframework.batch.core.step.item.SimpleChunkProvider.doRead(SimpleChunkProvider.java:91) ~[spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
    at org.springframework.batch.core.step.item.FaultTolerantChunkProvider.read(FaultTolerantChunkProvider.java:87) ~[spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
    ... 22 more

我也试过

.retryPolicy(new AlwaysRetryPolicy())

但我也不工作。

我做错了什么还是这个错误？

编辑：

我试过了

.faultTolerant()
.skipPolicy(new AlwaysSkipItemSkipPolicy())

按预期工作。

Answer 1

＆lt; p＆gt;＆＃34;我做错了什么或这是一个错误？＆＃34;好像是个bug。奇怪的是，在写入时抛出异常似乎没问题。＆LT; / p为H. ＆LT;预＆GT;＆LT;代码＆GT; @Bean public Job retrySample（）{ return jobBuilderFactory.get（＆＃34; retrySample＆＃34;）。start（mockStep（））。build（）; } @豆 public Step mockStep（）{ return stepBuilderFactory.get（＆＃34; mockStep＆＃34;）。＆lt; String，String＆gt; chunk（1） .reader（itemReader（）） .writer（itemWriter（）） .faultTolerant（） .retry（Exception.class） .retryLimit（10）。建立（）; } @豆 @工作范围 public ItemReader＆lt; String＆gt; itemReader（）{ 返回新的ItemReader＆lt; String＆gt;（）{ @覆盖 public String read（）throws Exception { 返回＆＃34; dkafj＆＃34 ;; } }; } @豆 @工作范围 public ItemWriter＆lt; String＆gt; itemWriter（）{ 返回新的ItemWriter＆lt; String＆gt;（）{ @覆盖 public void write（List＆lt;？extends String＆gt; items）throws Exception { items.forEach（item - ＆gt; {System.out.println（＆＃34; got＆＃34; + item）;}）; 抛出新的例外（＆＃34; booom＆＃34;）; } }; } ＆LT; /代码＆GT;＆LT; /预＆GT; ＆LT; p为H.日志：其中/ p为H. ＆LT;预＆GT;＆LT;代码＆GT; 2016-12-08 16：04：09.618 INFO 9040 --- [main] o.s.b.c.l.support.SimpleJobLauncher：Job：[SimpleJob：[name = retrySample]]使用以下参数启动：[{runId = Job}] 2016-12-08 16：04：09.651 INFO 9040 --- [main] o.s.batch.core.job.SimpleStepHandler：执行步骤：[mockStep] gotdkafj gotdkafj gotdkafj gotdkafj gotdkafj gotdkafj gotdkafj gotdkafj gotdkafj gotdkafj 2016-12-08 16：04：09.707 ERROR 9040 --- [main] o.s.batch.core.step.AbstractStep：在job retrySample中遇到执行步骤mockStep的错误 org.springframework.retry.ExhaustedRetryException：在最后一次尝试恢复路径后重试耗尽，但异常不可跳过。嵌套异常是java.lang.Exception：booom 在org.springframework.batch.core.step.item.FaultTolerantChunkProcessor $ 5.recover（FaultTolerantChunkProcessor.java:403）〜[spring-batch-core-3.0.7.RELEASE.jar：3.0.7.RELEASE] ＆LT; /代码＆GT;＆LT; /预＆GT; ＆lt; p＆gt;以下是Spring Batch的链接＆lt; a href =＆＃34; https://jira.spring.io/browse/BATCH/?selectedTab = com.atlassian.jira.jira-projects-plugin：摘要面板＆＃34; rel =＆＃34; nofollow noreferrer＆＃34;＆gt; JIRA＆lt; / a＆gt;＆lt; / p＆gt;

重试不使用FaultTolerantStepBuilder

1 个答案: