How to move files using ExpressionEvaluatingRequestHandlerAdvice - spring-boot

Question

In the manual for ExpressionEvaluatingRequestHandlerAdvice, it clearly says, A typical use case for this advice might be with an <ftp:outbound-channel-adapter/>, perhaps to move the file to one directory if the transfer was successful, or to another directory if it fails.
But I cannot figure out expression to move payload from current directory to another one.
This example just deletes or renames the file:
<bean class="org.springframework.integration.handler.advice.ExpressionEvaluatingRequestHandlerAdvice">
<property name="onSuccessExpression" value="payload.delete()" />
<property name="successChannel" ref="afterSuccessDeleteChannel" />
<property name="onFailureExpression" value="payload.renameTo(new java.io.File(payload.absolutePath + '.failed.to.send'))" />
<property name="failureChannel" ref="afterFailRenameChannel" />
</bean>
How to achieve this?
Edit
As per Gary's suggestion, this is the new try:
Managed to change the expression to "T(java.nio.file.Files).move(payload.path, new java.io.File(new java.io.File('sent'), payload.name).path, T(java.nio.file.StandardCopyOption).REPLACE_EXISTING)",
but still get the error Method move(java.lang.String,java.lang.String,java.nio.file.Standar‌​dCopyOption) cannot be found on java.nio.file.Files type
The code is,
#Bean
#ServiceActivator(inputChannel = "toSftpChannel", adviceChain = "expressionAdvice")
public MessageHandler uploadHandler() {
SftpMessageHandler handler = new SftpMessageHandler(sftpSessionFactory());
handler.setRemoteDirectoryExpression(new LiteralExpression(outRemoteDirectory));
handler.setFileNameGenerator(new FileNameGenerator() {
#Override
public String generateFileName(Message<?> message) {
if (message.getPayload() instanceof File) {
return ((File) message.getPayload()).getName();
} else {
throw new IllegalArgumentException("File expected as payload.");
}
}
});
return handler;
}
#MessagingGateway()
public interface UploadGateway {
#Gateway(requestChannel = "toSftpChannel")
void upload(File file);
}
#Bean
public String onUploadSuccessExpression() {
return "T(java.nio.file.Files).move(payload.path, new java.io.File(new java.io.File('sent'), payload.name).path, T(java.nio.file.StandardCopyOption).REPLACE_EXISTING)";
}
#Bean
public String onUploadFailedExpression() {
return "payload";
}
#Bean
public Advice expressionAdvice() {
ExpressionEvaluatingRequestHandlerAdvice expressionEvaluatingRequestHandlerAdvice = new ExpressionEvaluatingRequestHandlerAdvice();
expressionEvaluatingRequestHandlerAdvice.setOnSuccessExpressionString(onUploadSuccessExpression());
expressionEvaluatingRequestHandlerAdvice.setSuccessChannelName("uploadSuccessChannel");
expressionEvaluatingRequestHandlerAdvice.setOnFailureExpressionString(onUploadFailedExpression());
expressionEvaluatingRequestHandlerAdvice.setFailureChannelName("uploadFailedChannel");
expressionEvaluatingRequestHandlerAdvice.setTrapException(true);
expressionEvaluatingRequestHandlerAdvice.setPropagateEvaluationFailures(true);
return expressionEvaluatingRequestHandlerAdvice;
}
The upload method from UploadGateway is called.
The stack trace is,
"main#1" prio=5 tid=0x1 nid=NA runnable
java.lang.Thread.State: RUNNABLE
at org.springframework.integration.handler.advice.ExpressionEvaluatingRequestHandlerAdvice.evaluateSuccessExpression(ExpressionEvaluatingRequestHandlerAdvice.java:241)
at org.springframework.integration.handler.advice.ExpressionEvaluatingRequestHandlerAdvice.doInvoke(ExpressionEvaluatingRequestHandlerAdvice.java:214)
at org.springframework.integration.handler.advice.AbstractRequestHandlerAdvice.invoke(AbstractRequestHandlerAdvice.java:70)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213)
at com.sun.proxy.$Proxy81.handleRequestMessage(Unknown Source:-1)
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.doInvokeAdvisedRequestHandler(AbstractReplyProducingMessageHandler.java:127)
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:112)
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.messaging.core.AbstractMessageSendingTemplate.convertAndSend(AbstractMessageSendingTemplate.java:143)
at org.springframework.messaging.core.AbstractMessageSendingTemplate.convertAndSend(AbstractMessageSendingTemplate.java:135)
at org.springframework.integration.gateway.MessagingGatewaySupport.send(MessagingGatewaySupport.java:392)
at org.springframework.integration.gateway.GatewayProxyFactoryBean.invokeGatewayMethod(GatewayProxyFactoryBean.java:481)
at org.springframework.integration.gateway.GatewayProxyFactoryBean.doInvoke(GatewayProxyFactoryBean.java:433)
at org.springframework.integration.gateway.GatewayProxyFactoryBean.invoke(GatewayProxyFactoryBean.java:424)
at org.springframework.integration.gateway.GatewayCompletableFutureProxyFactoryBean.invoke(GatewayCompletableFutureProxyFactoryBean.java:65)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213)
at com.sun.proxy.$Proxy87.upload(Unknown Source:-1)

Answer 1

If the new directory is on the same disk as the old one, in the 'onSuccessExpression', simply use payload.renameTo(...) similar to the way the sample does in the onFailureExpression.
`payload.renameTo(new java.io.File(new File('newDir'), payload.name))`
Creates a file with the payload's name to a directory newDir (which must exist).
If you are JDK 7 or above use...
T(java.nio.file.Files).move(payload.path, new java.io.File(new File('newDir'), payload.name).path)
...instead.
This will handle the situation of the new directory being on a different disk (which a simple File.renameTo() will not).
If you are still on JDK 6 and the new directory might be on a different disk you will need to use onSuccessExpression=payload and subscribe a service activator to the successChannel to manipulate the file itself, perhaps using Spring's FileCopyUtils.