定义Bean时没有合格的Bean

Question

我一直在尝试建立一个安装程序，在其中创建实现JdbcCursorItemReader的PostDatedAchInReader，然后将其注入到PostDatedAchInAggregatingJdbcItemReader中，后者根据特定条件收集读取的对象并将它们分组到一个列表中，从而基本上按客户端ID将所有ach请求组保留下来。 但是，我不断收到没有限定bean的错误，但是bean在这里并已定义。 我很困惑问题是什么或如何解决。

所以我有以下配置文件

@Configuration
public class PostDatedAchInBatchConfig extends AbstractCommonBatchJobConfig {

    private static final String ACH_FULFILLMENT_POST_DATED_ACH_IN_STEP1_NAME =
            "achFulfillment_postDatedAchInJob_step1_scheduleAchIns";

    @Autowired
    DataSource prodDataSource;

    /**
     * This method defines the Job.
     *
     * @return postdatedachinjob
     *         return the configured job.
     */
    @Bean(name = "achFulfillmentPostDatedAchInJob")
    public Job job() throws Exception {
        mmLogMgr.info("AchFulfillmentEmailBatchConfig : job");
        return getJobBuilderFactory().get("achFulfillmentPostDatedAchInJob")
                .listener(postDatedAchInListener())
                .start(step1())
                .on(ExitStatus.COMPLETED.getExitCode())
                .end() // end of TransactionBuilder
                .end() // end of FlowBuilder
                .build();

    }

..

    /**
     * @return postDatedAchInAggregatingJdbcItemReader.
     */
    @Bean
    @Scope(value = "step", proxyMode = ScopedProxyMode.DEFAULT)
    public ItemReader<ArrayList<PostDatedAchIn>> postDatedAchInAggregatingJdbcItemReader(@Qualifier("postDatedAchInReader") final PostDatedAchInReader postDatedAchInReader)
            throws Exception {
        PostDatedAchInAggregatingJdbcItemReader postDatedAchInAggregatingJdbcItemReader =
                new PostDatedAchInAggregatingJdbcItemReader();
        postDatedAchInAggregatingJdbcItemReader.setDatabaseItemReader(postDatedAchInReader);
        return postDatedAchInAggregatingJdbcItemReader;
    }

    @Bean
    public PostDatedAchInClassifierWriter postDatedAchInClassifierWriter() {
        Map<String, ItemWriter<PostDatedAchIn>> classMap = new HashMap<String, ItemWriter<PostDatedAchIn>>();
        classMap.put("true", postDatedAchInCompositeWriterOneTimeFailure());
        classMap.put("false", postDatedAchInCompositeWriterPosted());
        PostDatedAchInClassifierWriter classifyWriter = new PostDatedAchInClassifierWriter();
        classifyWriter.setClassMap(classMap);
        return classifyWriter;
    }


..

    @Bean(name = "postDatedAchInReader")
    @Scope(value = "step", proxyMode = ScopedProxyMode.DEFAULT)
    public PostDatedAchInReader postDatedAchInReader(@Value("#{jobExecutionContext['current.business.date']}") final String currentBusinessDate) {

        SqlStatementHelper sqlStatementHelper = new SqlStatementHelper(PostDatedAchInConstants.POST_DATED_ACH_IN_PROPERTY_FILE,
                PostDatedAchInConstants.POST_DATED_ACH_IN_PROPERTY_ALT_FILE);
        String sqlStatement = sqlStatementHelper.getSqlStatement(PostDatedAchInConstants.RETRIEVE_POST_DATED_ACH_IN);

        ArrayList<String> parameters = new ArrayList<String>();
        parameters.add(currentBusinessDate);
        parameters.add(currentBusinessDate);
        parameters.add(currentBusinessDate);

        ListPreparedStatementSetter preparedStatementSetter = new ListPreparedStatementSetter();
        preparedStatementSetter.setParameters(parameters);

        PostDatedAchInReader postDatedAchInReader = new PostDatedAchInReader();
        postDatedAchInReader.setDataSource(prodDataSource);
        postDatedAchInReader.setSql(sqlStatement);
        postDatedAchInReader.setRowMapper(new PostDatedAchInRowMapper());
        postDatedAchInReader.setPreparedStatementSetter(preparedStatementSetter);

        return postDatedAchInReader;
    }

    /**
     * This method defines the Steps, it writes 1 record at a time.
     *
     * @return postdatedachinjob_step1
     *
     */
    @Bean(name = ACH_FULFILLMENT_POST_DATED_ACH_IN_STEP1_NAME)
    public Step step1() throws Exception {
        mmLogMgr.info(ACH_FULFILLMENT_POST_DATED_ACH_IN_STEP1_NAME);
        return getStepBuilderFactory().get(ACH_FULFILLMENT_POST_DATED_ACH_IN_STEP1_NAME)
                .<ArrayList<PostDatedAchIn>, ArrayList<PostDatedAchIn>> chunk(AchFulfillmentBatchJobUtil
                        .getChunkValue("postdatedachin"))
                .reader(postDatedAchInAggregatingJdbcItemReader(null))
                .processor(postDatedAchInProcessor())
                .writer(postDatedAchInClassifierWriter())
                .build();
    }

}

当我运行作业时，我得到以下堆栈跟踪：

2018-10-31 15:06:45,821 ERROR [o.s.batch.core.step.AbstractStep:AbstractStep.java:execute:229 - main] - Encountered an error executing step achFulfillment_postDatedAchInJob_step1_scheduleAchIns in job achFulfillmentPostDatedAchInJob
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'scopedTarget.postDatedAchInAggregatingJdbcItemReader' defined in com.tdameritrade.ctg.ach.batch.postdatedachinjob.PostDatedAchInBatchConfig: Unsatisfied dependency expressed through method 'postDatedAchInAggregatingJdbcItemReader' parameter 0; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.tdameritrade.ctg.ach.batch.postdatedachinjob.PostDatedAchInReader' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Qualifier(value=postDatedAchInReader)}
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:749)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:467)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1173)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1067)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
    at org.springframework.beans.factory.support.AbstractBeanFactory$2.getObject(AbstractBeanFactory.java:345)
    at org.springframework.batch.core.scope.StepScope.get(StepScope.java:113)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:340)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
    at org.springframework.aop.target.SimpleBeanTargetSource.getTarget(SimpleBeanTargetSource.java:35)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:192)
    at com.sun.proxy.$Proxy112.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.springframework.batch.core.step.tasklet.TaskletStep$ChunkTransactionCallback.doInTransaction(TaskletStep.java:330)
    at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:133)
    at org.springframework.batch.core.step.tasklet.TaskletStep$2.doInChunkContext(TaskletStep.java:272)
    at org.springframework.batch.core.scope.context.StepContextRepeatCallback.doInIteration(StepContextRepeatCallback.java:81)
    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.tasklet.TaskletStep.doExecute(TaskletStep.java:257)
    at org.springframework.batch.core.step.AbstractStep.execute(AbstractStep.java:200)
    at org.springframework.batch.core.job.SimpleStepHandler.handleStep(SimpleStepHandler.java:148)
    at org.springframework.batch.core.job.flow.JobFlowExecutor.executeStep(JobFlowExecutor.java:64)
    at org.springframework.batch.core.job.flow.support.state.StepState.handle(StepState.java:67)
    at org.springframework.batch.core.job.flow.support.SimpleFlow.resume(SimpleFlow.java:169)
    at org.springframework.batch.core.job.flow.support.SimpleFlow.start(SimpleFlow.java:144)
    at org.springframework.batch.core.job.flow.FlowJob.doExecute(FlowJob.java:134)
    at org.springframework.batch.core.job.AbstractJob.execute(AbstractJob.java:306)
    at org.springframework.batch.core.launch.support.SimpleJobLauncher$1.run(SimpleJobLauncher.java:135)
    at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50)
    at org.springframework.batch.core.launch.support.SimpleJobLauncher.run(SimpleJobLauncher.java:128)
    at com.tdameritrade.ctg.ach.fulfillment.util.MoneyMovementHelper.getJobExecution(MoneyMovementHelper.java:155)
    at com.tdameritrade.ctg.ach.fulfillment.util.MoneyMovementHelper.getJobExecution(MoneyMovementHelper.java:136)
    at com.tdameritrade.ctg.ach.batch.postdatedachinjob.PostDatedAchInBatchConfigTest.testLaunchJob(PostDatedAchInBatchConfigTest.java:32)
    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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
    at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:252)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.tdameritrade.ctg.ach.batch.postdatedachinjob.PostDatedAchInReader' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Qualifier(value=postDatedAchInReader)}
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1493)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1104)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1066)
    at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:835)
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:741)
    ... 72 common frames omitted

我很困惑它说在类中正确定义它时找不到类型的Bean。

我怎样才能解决这个问题？

Answer 1

因此，我们可以通过在步骤配置中更改对聚合阅读器的调用以发送游标阅读器的方法/ bean来解决此问题。 我们更改了这一行：

.reader(postDatedAchInAggregatingJdbcItemReader(postDatedAchInReader()))

并删除了@Qualifier。 这样可以停止此错误，并且可以正确连接所有内容。 对我来说有点笨拙，但是可以。 我愿意接受其他解决方案，如果有人有的话。