Spring XD：从文件源到批处理作业的管道 (>) 失败（IllegalArgumentException：无法将提供的 JSON 转换为 Map<String, Object>）
Spring XD: pipe (>) from file source to batch job fails (IllegalArgumentException: Unable to convert provided JSON to Map<String, Object>)
我正在尝试将 Spring XD 文件源的输出（文件内容）通过管道传输到一个简单的批处理作业。这失败并出现以下异常。在启动我的作业时，XD 似乎试图错误地将文件内容用作 JSON 作业参数。您可能会注意到，我用来测试的文件是 .gitignore.
02:01:11,568 1.1.0.RC1 INFO DeploymentsPathChildrenCache-0 module.ModuleDeployer - Deployed ResourceConfiguredModule [name=file, type=source, group=mystream1, index=0 @5c617835]
02:01:11,571 1.1.0.RC1 DEBUG task-scheduler-9 support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'integrationEvaluationContext'
02:01:11,573 1.1.0.RC1 DEBUG task-scheduler-9 support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'output'
02:01:11,575 1.1.0.RC1 INFO DeploymentSupervisor-0 server.StreamDeploymentListener - Deployment status for stream 'mystream1': DeploymentStatus{state=deployed}
02:01:11,577 1.1.0.RC1 INFO DeploymentSupervisor-0 server.StreamDeploymentListener - Stream Stream{name='mystream1'} deployment attempt complete
02:01:11,577 1.1.0.RC1 DEBUG task-scheduler-9 local.LocalMessageBus - outbound.job:testjob1 received message: GenericMessage [payload=C:\Users\me\Desktop\testfiles\.gitignore, headers={timestamp=1423465271577, id=de52e134-2dbc-454f-b27d-b032e89e6254, contentType=text/plain}]
02:01:11,578 1.1.0.RC1 DEBUG task-scheduler-1 local.LocalMessageBus - inbound.job:testjob1 received message: GenericMessage [payload=C:\Users\me\Desktop\testfiles\.gitignore, headers={timestamp=1423465271577, id=de52e134-2dbc-454f-b27d-b032e89e6254, contentType=text/plain}]
02:01:11,581 1.1.0.RC1 DEBUG task-scheduler-1 job.JobLaunchRequestTransformer - JobParameters are provided as 'String'. Convertering to Spring Batch JobParameters...
02:01:11,584 1.1.0.RC1 DEBUG task-scheduler-1 support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'errorChannel'
02:01:11,588 1.1.0.RC1 ERROR task-scheduler-1 handler.LoggingHandler - org.springframework.integration.transformer.MessageTransformationException: ; nested exception is org.springframework.messaging.MessageHandlingException: ; nested exception is java.lang.IllegalArgumentException: Unable to convert provided JSON to Map<String, Object>
at org.springframework.integration.transformer.MessageTransformingHandler.handleRequestMessage(MessageTransformingHandler.java:74)
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:99)
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:78)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.integration.monitor.SimpleMessageHandlerMetrics.handleMessage(SimpleMessageHandlerMetrics.java:107)
at org.springframework.integration.monitor.SimpleMessageHandlerMetrics.invoke(SimpleMessageHandlerMetrics.java:87)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)
at com.sun.proxy.$Proxy123.handleMessage(Unknown Source)
at org.springframework.integration.dispatcher.AbstractDispatcher.tryOptimizedDispatch(AbstractDispatcher.java:116)
at org.springframework.integration.dispatcher.UnicastingDispatcher.doDispatch(UnicastingDispatcher.java:101)
at org.springframework.integration.dispatcher.UnicastingDispatcher.dispatch(UnicastingDispatcher.java:97)
at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:77)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:277)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:239)
at sun.reflect.GeneratedMethodAccessor77.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.integration.monitor.DirectChannelMetrics.monitorSend(DirectChannelMetrics.java:114)
at org.springframework.integration.monitor.DirectChannelMetrics.doInvoke(DirectChannelMetrics.java:98)
at org.springframework.integration.monitor.DirectChannelMetrics.invoke(DirectChannelMetrics.java:92)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)
at com.sun.proxy.$Proxy120.send(Unknown Source)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:115)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:45)
at org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:95)
at org.springframework.integration.handler.AbstractMessageProducingHandler.sendOutput(AbstractMessageProducingHandler.java:248)
at org.springframework.integration.handler.AbstractMessageProducingHandler.produceOutput(AbstractMessageProducingHandler.java:171)
at org.springframework.integration.handler.AbstractMessageProducingHandler.sendOutputs(AbstractMessageProducingHandler.java:119)
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:105)
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:78)
at org.springframework.integration.endpoint.PollingConsumer.handleMessage(PollingConsumer.java:74)
at org.springframework.integration.endpoint.AbstractPollingEndpoint.doPoll(AbstractPollingEndpoint.java:219)
at org.springframework.integration.endpoint.AbstractPollingEndpoint.access[=13=]0(AbstractPollingEndpoint.java:55)
at org.springframework.integration.endpoint.AbstractPollingEndpoint.call(AbstractPollingEndpoint.java:149)
at org.springframework.integration.endpoint.AbstractPollingEndpoint.call(AbstractPollingEndpoint.java:146)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller.run(AbstractPollingEndpoint.java:298)
at org.springframework.integration.util.ErrorHandlingTaskExecutor.run(ErrorHandlingTaskExecutor.java:52)
at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50)
at org.springframework.integration.util.ErrorHandlingTaskExecutor.execute(ErrorHandlingTaskExecutor.java:49)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller.run(AbstractPollingEndpoint.java:292)
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access1(ScheduledThreadPoolExecutor.java:178)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
Caused by: org.springframework.messaging.MessageHandlingException: ; nested exception is java.lang.IllegalArgumentException: Unable to convert provided JSON to Map<String, Object>
at org.springframework.integration.handler.MethodInvokingMessageProcessor.processMessage(MethodInvokingMessageProcessor.java:78)
at org.springframework.integration.transformer.AbstractMessageProcessingTransformer.transform(AbstractMessageProcessingTransformer.java:64)
at org.springframework.integration.transformer.MessageTransformingHandler.handleRequestMessage(MessageTransformingHandler.java:68)
... 59 more
Caused by: java.lang.IllegalArgumentException: Unable to convert provided JSON to Map<String, Object>
at org.springframework.xd.dirt.plugins.job.ExpandedJobParametersConverter.getJobParametersForJsonString(ExpandedJobParametersConverter.java:169)
at org.springframework.xd.dirt.plugins.job.JobLaunchRequestTransformer.toJobLaunchRequest(JobLaunchRequestTransformer.java:128)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.expression.spel.support.ReflectiveMethodExecutor.execute(ReflectiveMethodExecutor.java:112)
at org.springframework.expression.spel.ast.MethodReference.getValueInternal(MethodReference.java:129)
at org.springframework.expression.spel.ast.MethodReference.access[=13=]0(MethodReference.java:49)
at org.springframework.expression.spel.ast.MethodReference$MethodValueRef.getValue(MethodReference.java:342)
at org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:88)
at org.springframework.expression.spel.ast.SpelNodeImpl.getTypedValue(SpelNodeImpl.java:131)
at org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:330)
at org.springframework.integration.util.AbstractExpressionEvaluator.evaluateExpression(AbstractExpressionEvaluator.java:164)
at org.springframework.integration.util.MessagingMethodInvokerHelper.processInternal(MessagingMethodInvokerHelper.java:276)
at org.springframework.integration.util.MessagingMethodInvokerHelper.process(MessagingMethodInvokerHelper.java:142)
at org.springframework.integration.handler.MethodInvokingMessageProcessor.processMessage(MethodInvokingMessageProcessor.java:75)
... 61 more
Caused by: com.fasterxml.jackson.core.JsonParseException: Unrecognized token 'C': was expecting ('true', 'false' or 'null')
at [Source: C:\Users\me\Desktop\testfiles\.gitignore; line: 1, column: 2]
at com.fasterxml.jackson.core.JsonParser._constructError(JsonParser.java:1419)
at com.fasterxml.jackson.core.base.ParserMinimalBase._reportError(ParserMinimalBase.java:508)
at com.fasterxml.jackson.core.json.ReaderBasedJsonParser._reportInvalidToken(ReaderBasedJsonParser.java:2300)
at com.fasterxml.jackson.core.json.ReaderBasedJsonParser._handleOddValue(ReaderBasedJsonParser.java:1459)
at com.fasterxml.jackson.core.json.ReaderBasedJsonParser.nextToken(ReaderBasedJsonParser.java:683)
at com.fasterxml.jackson.databind.ObjectMapper._initForReading(ObjectMapper.java:3105)
at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:3051)
at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2175)
at org.springframework.xd.dirt.plugins.job.ExpandedJobParametersConverter.getJobParametersForJsonString(ExpandedJobParametersConverter.java:166)
... 77 more
我的工作配置 XML 如下所示：
<context:component-scan base-package="com.me" use-default-filters="false">
<context:include-filter type="annotation" expression="org.springframework.context.annotation.Configuration" />
</context:component-scan>
<int:channel id="input" />
<batch:job id="filePollJob" restartable="true">
<batch:step id="stepOne">
<batch:tasklet>
<batch:chunk reader="testReader" writer="testWriter" commit-interval="3"/>
</batch:tasklet>
</batch:step>
</batch:job>
<bean id="testReader" class="com.me.TestItemReader" scope="step">
<property name="resource" value="#{jobParameters['input.file']}"/>
<property name="lineMapper" ref="testLineMapper" />
</bean>
<bean id="testLineMapper" class="org.springframework.batch.item.file.mapping.DefaultLineMapper">
<property name="lineTokenizer">
<bean class="org.springframework.batch.item.file.transform.DelimitedLineTokenizer" />
</property>
<property name="fieldSetMapper">
<bean class="org.springframework.batch.item.file.mapping.PassThroughFieldSetMapper" />
</property>
</bean>
<bean id="testWriter" class="com.me.TestItemWriter" />
我的 XD shell 命令：
xd:>job create myjob --definition "file-batch"
Successfully created job 'myjob'
xd:>job deploy myjob
Deployed job 'myjob'
xd:>stream create mystream --definition "file --dir='C:\Users\me\Desktop\testfiles\' --outputType=text/plain > queue:job:myjob" --deploy
Created and deployed new stream 'mystream'
感谢您提供的任何帮助！
默认情况下，文件源通过总线发送内容；您需要发送文件本身，而不是其内容 (ref=true)。
这个this sample举例。
我正在尝试将 Spring XD 文件源的输出（文件内容）通过管道传输到一个简单的批处理作业。这失败并出现以下异常。在启动我的作业时，XD 似乎试图错误地将文件内容用作 JSON 作业参数。您可能会注意到，我用来测试的文件是 .gitignore.
02:01:11,568 1.1.0.RC1 INFO DeploymentsPathChildrenCache-0 module.ModuleDeployer - Deployed ResourceConfiguredModule [name=file, type=source, group=mystream1, index=0 @5c617835]
02:01:11,571 1.1.0.RC1 DEBUG task-scheduler-9 support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'integrationEvaluationContext'
02:01:11,573 1.1.0.RC1 DEBUG task-scheduler-9 support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'output'
02:01:11,575 1.1.0.RC1 INFO DeploymentSupervisor-0 server.StreamDeploymentListener - Deployment status for stream 'mystream1': DeploymentStatus{state=deployed}
02:01:11,577 1.1.0.RC1 INFO DeploymentSupervisor-0 server.StreamDeploymentListener - Stream Stream{name='mystream1'} deployment attempt complete
02:01:11,577 1.1.0.RC1 DEBUG task-scheduler-9 local.LocalMessageBus - outbound.job:testjob1 received message: GenericMessage [payload=C:\Users\me\Desktop\testfiles\.gitignore, headers={timestamp=1423465271577, id=de52e134-2dbc-454f-b27d-b032e89e6254, contentType=text/plain}]
02:01:11,578 1.1.0.RC1 DEBUG task-scheduler-1 local.LocalMessageBus - inbound.job:testjob1 received message: GenericMessage [payload=C:\Users\me\Desktop\testfiles\.gitignore, headers={timestamp=1423465271577, id=de52e134-2dbc-454f-b27d-b032e89e6254, contentType=text/plain}]
02:01:11,581 1.1.0.RC1 DEBUG task-scheduler-1 job.JobLaunchRequestTransformer - JobParameters are provided as 'String'. Convertering to Spring Batch JobParameters...
02:01:11,584 1.1.0.RC1 DEBUG task-scheduler-1 support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'errorChannel'
02:01:11,588 1.1.0.RC1 ERROR task-scheduler-1 handler.LoggingHandler - org.springframework.integration.transformer.MessageTransformationException: ; nested exception is org.springframework.messaging.MessageHandlingException: ; nested exception is java.lang.IllegalArgumentException: Unable to convert provided JSON to Map<String, Object>
at org.springframework.integration.transformer.MessageTransformingHandler.handleRequestMessage(MessageTransformingHandler.java:74)
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:99)
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:78)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.integration.monitor.SimpleMessageHandlerMetrics.handleMessage(SimpleMessageHandlerMetrics.java:107)
at org.springframework.integration.monitor.SimpleMessageHandlerMetrics.invoke(SimpleMessageHandlerMetrics.java:87)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)
at com.sun.proxy.$Proxy123.handleMessage(Unknown Source)
at org.springframework.integration.dispatcher.AbstractDispatcher.tryOptimizedDispatch(AbstractDispatcher.java:116)
at org.springframework.integration.dispatcher.UnicastingDispatcher.doDispatch(UnicastingDispatcher.java:101)
at org.springframework.integration.dispatcher.UnicastingDispatcher.dispatch(UnicastingDispatcher.java:97)
at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:77)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:277)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:239)
at sun.reflect.GeneratedMethodAccessor77.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.integration.monitor.DirectChannelMetrics.monitorSend(DirectChannelMetrics.java:114)
at org.springframework.integration.monitor.DirectChannelMetrics.doInvoke(DirectChannelMetrics.java:98)
at org.springframework.integration.monitor.DirectChannelMetrics.invoke(DirectChannelMetrics.java:92)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)
at com.sun.proxy.$Proxy120.send(Unknown Source)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:115)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:45)
at org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:95)
at org.springframework.integration.handler.AbstractMessageProducingHandler.sendOutput(AbstractMessageProducingHandler.java:248)
at org.springframework.integration.handler.AbstractMessageProducingHandler.produceOutput(AbstractMessageProducingHandler.java:171)
at org.springframework.integration.handler.AbstractMessageProducingHandler.sendOutputs(AbstractMessageProducingHandler.java:119)
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:105)
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:78)
at org.springframework.integration.endpoint.PollingConsumer.handleMessage(PollingConsumer.java:74)
at org.springframework.integration.endpoint.AbstractPollingEndpoint.doPoll(AbstractPollingEndpoint.java:219)
at org.springframework.integration.endpoint.AbstractPollingEndpoint.access[=13=]0(AbstractPollingEndpoint.java:55)
at org.springframework.integration.endpoint.AbstractPollingEndpoint.call(AbstractPollingEndpoint.java:149)
at org.springframework.integration.endpoint.AbstractPollingEndpoint.call(AbstractPollingEndpoint.java:146)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller.run(AbstractPollingEndpoint.java:298)
at org.springframework.integration.util.ErrorHandlingTaskExecutor.run(ErrorHandlingTaskExecutor.java:52)
at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50)
at org.springframework.integration.util.ErrorHandlingTaskExecutor.execute(ErrorHandlingTaskExecutor.java:49)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller.run(AbstractPollingEndpoint.java:292)
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access1(ScheduledThreadPoolExecutor.java:178)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
Caused by: org.springframework.messaging.MessageHandlingException: ; nested exception is java.lang.IllegalArgumentException: Unable to convert provided JSON to Map<String, Object>
at org.springframework.integration.handler.MethodInvokingMessageProcessor.processMessage(MethodInvokingMessageProcessor.java:78)
at org.springframework.integration.transformer.AbstractMessageProcessingTransformer.transform(AbstractMessageProcessingTransformer.java:64)
at org.springframework.integration.transformer.MessageTransformingHandler.handleRequestMessage(MessageTransformingHandler.java:68)
... 59 more
Caused by: java.lang.IllegalArgumentException: Unable to convert provided JSON to Map<String, Object>
at org.springframework.xd.dirt.plugins.job.ExpandedJobParametersConverter.getJobParametersForJsonString(ExpandedJobParametersConverter.java:169)
at org.springframework.xd.dirt.plugins.job.JobLaunchRequestTransformer.toJobLaunchRequest(JobLaunchRequestTransformer.java:128)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.expression.spel.support.ReflectiveMethodExecutor.execute(ReflectiveMethodExecutor.java:112)
at org.springframework.expression.spel.ast.MethodReference.getValueInternal(MethodReference.java:129)
at org.springframework.expression.spel.ast.MethodReference.access[=13=]0(MethodReference.java:49)
at org.springframework.expression.spel.ast.MethodReference$MethodValueRef.getValue(MethodReference.java:342)
at org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:88)
at org.springframework.expression.spel.ast.SpelNodeImpl.getTypedValue(SpelNodeImpl.java:131)
at org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:330)
at org.springframework.integration.util.AbstractExpressionEvaluator.evaluateExpression(AbstractExpressionEvaluator.java:164)
at org.springframework.integration.util.MessagingMethodInvokerHelper.processInternal(MessagingMethodInvokerHelper.java:276)
at org.springframework.integration.util.MessagingMethodInvokerHelper.process(MessagingMethodInvokerHelper.java:142)
at org.springframework.integration.handler.MethodInvokingMessageProcessor.processMessage(MethodInvokingMessageProcessor.java:75)
... 61 more
Caused by: com.fasterxml.jackson.core.JsonParseException: Unrecognized token 'C': was expecting ('true', 'false' or 'null')
at [Source: C:\Users\me\Desktop\testfiles\.gitignore; line: 1, column: 2]
at com.fasterxml.jackson.core.JsonParser._constructError(JsonParser.java:1419)
at com.fasterxml.jackson.core.base.ParserMinimalBase._reportError(ParserMinimalBase.java:508)
at com.fasterxml.jackson.core.json.ReaderBasedJsonParser._reportInvalidToken(ReaderBasedJsonParser.java:2300)
at com.fasterxml.jackson.core.json.ReaderBasedJsonParser._handleOddValue(ReaderBasedJsonParser.java:1459)
at com.fasterxml.jackson.core.json.ReaderBasedJsonParser.nextToken(ReaderBasedJsonParser.java:683)
at com.fasterxml.jackson.databind.ObjectMapper._initForReading(ObjectMapper.java:3105)
at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:3051)
at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2175)
at org.springframework.xd.dirt.plugins.job.ExpandedJobParametersConverter.getJobParametersForJsonString(ExpandedJobParametersConverter.java:166)
... 77 more
我的工作配置 XML 如下所示：
<context:component-scan base-package="com.me" use-default-filters="false">
<context:include-filter type="annotation" expression="org.springframework.context.annotation.Configuration" />
</context:component-scan>
<int:channel id="input" />
<batch:job id="filePollJob" restartable="true">
<batch:step id="stepOne">
<batch:tasklet>
<batch:chunk reader="testReader" writer="testWriter" commit-interval="3"/>
</batch:tasklet>
</batch:step>
</batch:job>
<bean id="testReader" class="com.me.TestItemReader" scope="step">
<property name="resource" value="#{jobParameters['input.file']}"/>
<property name="lineMapper" ref="testLineMapper" />
</bean>
<bean id="testLineMapper" class="org.springframework.batch.item.file.mapping.DefaultLineMapper">
<property name="lineTokenizer">
<bean class="org.springframework.batch.item.file.transform.DelimitedLineTokenizer" />
</property>
<property name="fieldSetMapper">
<bean class="org.springframework.batch.item.file.mapping.PassThroughFieldSetMapper" />
</property>
</bean>
<bean id="testWriter" class="com.me.TestItemWriter" />
我的 XD shell 命令：
xd:>job create myjob --definition "file-batch"
Successfully created job 'myjob'
xd:>job deploy myjob
Deployed job 'myjob'
xd:>stream create mystream --definition "file --dir='C:\Users\me\Desktop\testfiles\' --outputType=text/plain > queue:job:myjob" --deploy
Created and deployed new stream 'mystream'
感谢您提供的任何帮助！
默认情况下，文件源通过总线发送内容；您需要发送文件本身，而不是其内容 (ref=true)。
这个this sample举例。