我的要求是从FTP下载文件（例如：FTP Dir＆＃34; A＆＃34;）进行验证并执行一些操作。一旦处理完毕，同一个文件必须移动＆＃34; A＆＃34;到FTP Dir＆＃34; B＆＃34;。
尝试下面一次
@ServiceActivator(inputChannel = "jsonHttpOutBoundChannel",outputChannel = "testChannel")
public void handler() {
FtpOutboundGateway ftpOutboundGateway = new FtpOutboundGateway(ftpSessionFactory.getFTPSessionFactory(), "mv");
Message message1 = MessageBuilder.withPayload(false)
.setHeader("file_renameTo", "/FTP/success")
.setHeader("file_remoteFile", "category.xml")
.setHeader("file_remoteDirectory","/FTP/process")
.build();
ftpOutboundGateway.handleMessage(message1);
}
获得
Caused by: java.lang.NullPointerException
at org.springframework.integration.file.remote.gateway.AbstractRemoteFileOutboundGateway.getRemoteFilename(AbstractRemoteFileOutboundGateway.java:1046)
at org.springframework.integration.file.remote.gateway.AbstractRemoteFileOutboundGateway.doMv(AbstractRemoteFileOutboundGateway.java:629)
at org.springframework.integration.file.remote.gateway.AbstractRemoteFileOutboundGateway.handleRequestMessage(AbstractRemoteFileOutboundGateway.java:526)
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:109)
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:127)
at au.com.fluentretail.ftp.integration.serviceactivators.FTPServiceActivator.handler(FTPServiceActivator.java:69)
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.expression.spel.support.ReflectiveMethodExecutor.execute(ReflectiveMethodExecutor.java:113)
at org.springframework.expression.spel.ast.MethodReference.getValueInternal(MethodReference.java:129)
at org.springframework.expression.spel.ast.MethodReference.access$000(MethodReference.java:49)
at org.springframework.expression.spel.ast.MethodReference$MethodValueRef.getValue(MethodReference.java:347).
使用AbstractRemoteFileOutboundGateway尝试RemoteFileTemplate，
@Bean
@ServiceActivator(inputChannel = "jsonHttpOutBoundChannel")
public MessageHandler gatewayHandler() throws IOException {
Expression expression = new LiteralExpression("/processing");
Expression fileExpression = new LiteralExpression("category.xml");
RemoteFileTemplate remoteFileTemplate = new RemoteFileTemplate(ftpSessionFactory.getFTPSessionFactory());
remoteFileTemplate.setRemoteDirectoryExpression(expression);
remoteFileTemplate.setFileNameExpression(fileExpression);
AbstractRemoteFileOutboundGateway ftpOutboundGateway = new FtpOutboundGateway(remoteFileTemplate, "get");
ftpOutboundGateway.setLocalDirectoryExpression(new LiteralExpression(CONSTANTS.ftpErrorPath));
ftpOutboundGateway.setRequiresReply(false);
return ftpOutboundGateway;
}
仍面临同样的问题。
2017-09-14 15:55:25.058 ERROR 14648 --- [ask-scheduler-1] o.s.integration.handler.LoggingHandler : org.springframework.messaging.MessageHandlingException: error occurred in message handler [gatewayHandler]; nested exception is java.lang.NullPointerException, failedMessage=GenericMessage [payload=, headers={file_renameTo=/success, file_originalFile=/processing/category.xml, id=68fd370f-eb77-66a5-3462-e8f50c0c068c, file_remoteDirectory=/processing, file_remoteFile=category.xml, timestamp=1505384725042}]
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:139)
at org.springframework.integration.dispatcher.BroadcastingDispatcher.invokeHandler(BroadcastingDispatcher.java:236)
at org.springframework.integration.dispatcher.BroadcastingDispatcher.dispatch(BroadcastingDispatcher.java:185)
at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:89)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:423)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:373)
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:105)
at org.springframework.integration.handler.AbstractMessageProducingHandler.sendOutput(AbstractMessageProducingHandler.java:292)
at org.springframework.integration.handler.AbstractMessageProducingHandler.produceOutput(AbstractMessageProducingHandler.java:212)
at org.springframework.integration.handler.AbstractMessageProducingHandler.sendOutputs(AbstractMessageProducingHandler.java:129)
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:115)
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:127)
at org.springframework.integration.dispatcher.BroadcastingDispatcher.invokeHandler(BroadcastingDispatcher.java:236)
at org.springframework.integration.dispatcher.BroadcastingDispatcher.dispatch(BroadcastingDispatcher.java:185)
at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:89)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:423)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:373)
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:105)
at org.springframework.integration.handler.AbstractMessageProducingHandler.sendOutput(AbstractMessageProducingHandler.java:292)
at org.springframework.integration.handler.AbstractMessageProducingHandler.produceOutput(AbstractMessageProducingHandler.java:212)
at org.springframework.integration.splitter.AbstractMessageSplitter.produceOutput(AbstractMessageSplitter.java:159)
at org.springframework.integration.handler.AbstractMessageProducingHandler.sendOutputs(AbstractMessageProducingHandler.java:129)
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:115)
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:127)
at org.springframework.integration.dispatcher.AbstractDispatcher.tryOptimizedDispatch(AbstractDispatcher.java:116)
at org.springframework.integration.dispatcher.UnicastingDispatcher.doDispatch(UnicastingDispatcher.java:148)
at org.springframework.integration.dispatcher.UnicastingDispatcher.dispatch(UnicastingDispatcher.java:121)
at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:89)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:423)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:373)
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:105)
at org.springframework.integration.handler.AbstractMessageProducingHandler.sendOutput(AbstractMessageProducingHandler.java:292)
at org.springframework.integration.handler.AbstractMessageProducingHandler.produceOutput(AbstractMessageProducingHandler.java:212)
at org.springframework.integration.handler.AbstractMessageProducingHandler.sendOutputs(AbstractMessageProducingHandler.java:129)
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:115)
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:127)
at org.springframework.integration.dispatcher.BroadcastingDispatcher.invokeHandler(BroadcastingDispatcher.java:236)
at org.springframework.integration.dispatcher.BroadcastingDispatcher.dispatch(BroadcastingDispatcher.java:185)
at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:89)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:423)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:373)
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:105)
at org.springframework.integration.handler.AbstractMessageProducingHandler.sendOutput(AbstractMessageProducingHandler.java:292)
at org.springframework.integration.handler.AbstractMessageProducingHandler.produceOutput(AbstractMessageProducingHandler.java:212)
at org.springframework.integration.handler.AbstractMessageProducingHandler.sendOutputs(AbstractMessageProducingHandler.java:129)
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:115)
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:127)
at org.springframework.integration.dispatcher.BroadcastingDispatcher.invokeHandler(BroadcastingDispatcher.java:236)
at org.springframework.integration.dispatcher.BroadcastingDispatcher.dispatch(BroadcastingDispatcher.java:185)
at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:89)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:423)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:373)
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:105)
at org.springframework.integration.endpoint.SourcePollingChannelAdapter.handleMessage(SourcePollingChannelAdapter.java:210)
at org.springframework.integration.endpoint.AbstractPollingEndpoint.doPoll(AbstractPollingEndpoint.java:272)
at org.springframework.integration.endpoint.AbstractPollingEndpoint.access$000(AbstractPollingEndpoint.java:58)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$1.call(AbstractPollingEndpoint.java:190)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$1.call(AbstractPollingEndpoint.java:186)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller$1.run(AbstractPollingEndpoint.java:353)
at org.springframework.integration.util.ErrorHandlingTaskExecutor$1.run(ErrorHandlingTaskExecutor.java:55)
at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50)
at org.springframework.integration.util.ErrorHandlingTaskExecutor.execute(ErrorHandlingTaskExecutor.java:51)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller.run(AbstractPollingEndpoint.java:344)
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$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NullPointerException
at org.springframework.integration.file.remote.gateway.AbstractRemoteFileOutboundGateway.getRemoteFilename(AbstractRemoteFileOutboundGateway.java:1046)
at org.springframework.integration.file.remote.gateway.AbstractRemoteFileOutboundGateway.doGet(AbstractRemoteFileOutboundGateway.java:564)
at org.springframework.integration.file.remote.gateway.AbstractRemoteFileOutboundGateway.handleRequestMessage(AbstractRemoteFileOutboundGateway.java:520)
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:109)
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:127)
... 81 more
这里和这里似乎是常见的问题。
有人可以帮助我吗？ 提前谢谢。
编辑：Caused by: java.lang.IllegalArgumentException: BeanFactory must not be null在代码下面抛出，它已经是一个bean了。
即使使用sessionFactory而不是RemoteFileTemplate
@Bean
@ServiceActivator(inputChannel = "finalProcessChannel")
public MessageHandler finalProcessHandler() {
return new MessageHandler() {
@Override
public void handleMessage(Message<?> message) throws MessagingException {
String fileName = message.getHeaders().get("file_name").toString();
message = MessageBuilder.createMessage("",createHeaders(message,CONSTANTS.ftpProcessingPath,CONSTANTS.ftpSuccessPath));
RemoteFileTemplate fileTemplate = new RemoteFileTemplate(ftpSessionFactory.getFTPSessionFactory());
FtpOutboundGateway ftpOutboundGateway = new FtpOutboundGateway(fileTemplate, "mv","'"+CONSTANTS.ftpProcessingPath+"/"+fileName+"'");
ftpOutboundGateway.setOutputChannelName("outputChannel");
ftpOutboundGateway.handleMessage(message);
}
};
}
编辑：要返回FtpOutboundGateway，我需要Message Header / String中的文件名，以便使用表达式初始化构造函数。并使用@Bean将Message作为参数传递给required a bean of type 'org.springframework.messaging.Message' that could not be found或required a bean of type 'java.lang.String' that could not be found
前：
@Bean
@ServiceActivator(inputChannel = "finalProcessChannel")
public FtpOutboundGateway finalProcessHandler(Message message) {
String fileName = message.getHeaders().get("file_name").toString();
return new FtpOutboundGateway(ftpSessionFactory.getFTPSessionFactory(), "mv", "'" + CONSTANTS.ftpProcessingPath + fileName + "'") {
@Override
protected Object handleRequestMessage(Message<?> requestMessage) {
requestMessage = MessageBuilder.createMessage("", createHeaders(requestMessage, CONSTANTS.ftpProcessingPath, CONSTANTS.ftpSuccessPath));
setOutputChannelName("outputChannel");
return super.handleRequestMessage(requestMessage);
}
};
}
编辑：动态表达
@Bean
@ServiceActivator(inputChannel = "finalProcessChannel")
public FtpOutboundGateway finalProcessHandler() {
return new FtpOutboundGateway(ftpSessionFactory.getFTPSessionFactory(), "mv","'"+CONSTANTS.ftpProcessingPath+"/"+"headers['file_name']"+"'"){
@Override
protected Object handleRequestMessage(Message<?> requestMessage) {
requestMessage = MessageBuilder.createMessage("", createHeaders(requestMessage, CONSTANTS.ftpProcessingPath, CONSTANTS.ftpSuccessPath));
setOutputChannelName("outputChannel");
return super.handleRequestMessage(requestMessage);
}
};
}
答案 0 :(得分：0)
您没有正确使用网关;您不应为每个请求创建新网关。
网关必须是@Bean，以便框架正确初始化它。
@ServiceActivator(...)
@Bean
public FtpOutboundGateway gateway() {
...
}
然后向服务的inputChannel发送消息。
修改
我们应该防止NPE，但问题是构造函数（在第二个示例中）设置远程文件路径表达式（使用网关）。使用该构造函数，您需要再次添加表达式...
AbstractRemoteFileOutboundGateway ftpOutboundGateway = new FtpOutboundGateway(remoteFileTemplate, "get", "/processing/category.xml");
我会远离采用RemoteFileTemplate的构造函数;使用会话工厂的那些。
我将针对这些问题打开JIRA问题。