我想从sftp服务器下载txt文件，但我的入站通道只是创建文件夹，不会将文件下载到目录中。一旦它连接到SFTP服务器，它就会给出错误。请看堆栈跟踪。 我正在使用spring integration 4.
这是我的app-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:task="http://www.springframework.org/schema/task"
xmlns:int="http://www.springframework.org/schema/integration"
xmlns:int-sftp="http://www.springframework.org/schema/integration/sftp"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
http://www.springframework.org/schema/task
http://www.springframework.org/schema/task/spring-task-4.0.xsd
http://www.springframework.org/schema/integration
http://www.springframework.org/schema/integration/spring-integration.xsd
http://www.springframework.org/schema/integration/sftp
http://www.springframework.org/schema/integration/sftp/spring-integration-sftp.xsd">
<context:component-scan base-package="com.canaldigital.tsi.bank" />
<context:property-placeholder location="classpath:settings.properties" />
<task:scheduled-tasks scheduler="myScheduler">
<task:scheduled ref="myBean" method="printMessage" fixed-delay="600000" initial-delay="3000"/>
<task:scheduled ref="myBean" method="checkStatus" fixed-delay="600000" initial-delay="2000"/>
</task:scheduled-tasks>
<task:scheduler id="myScheduler" pool-size="10" />
<bean id="defaultSftpSessionFactory"
class="org.springframework.integration.sftp.session.DefaultSftpSessionFactory">
<property name="host" value="${sftp.host}"/>
<property name="user" value="${sftp.username}"/>
<property name="password" value="${sftp.password}"/>
<property name="port" value="${sftp.serverPort}"/>
<!-- <property name="privateKey" value="${sftp.private.keyfile}"/> -->
<!-- <property name="privateKeyPassphrase" value="${sftp.passphrase}"/> -->
</bean>
<bean id="sftpSessionFactory" class="org.springframework.integration.file.remote.session.CachingSessionFactory">
<constructor-arg ref="defaultSftpSessionFactory" />
<!-- <property name="sessionCacheSize" value="10"/>
<property name="sessionWaitTimeout" value="1000"/> -->
</bean>
<int-sftp:inbound-channel-adapter id="sftpAdapterAutoCreate"
session-factory="sftpSessionFactory"
channel="requestChannel"
filename-pattern="*.txt"
remote-directory="/home/oracle/IBSTOBANK/DNB/Norway/Outgoing/"
preserve-timestamp="true"
local-directory="file:src/main/resources/InboudSftpFiles"
auto-create-local-directory="true"
local-filename-generator-expression="#this.toUpperCase() + '.a'"
temporary-file-suffix=".writing"
delete-remote-files="false">
<int:poller fixed-rate="1000" max-messages-per-poll="1"/>
</int-sftp:inbound-channel-adapter>
<int:channel id="requestChannel">
<int:queue/>
</int:channel>
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${db.driver}"/>
<property name="url" value="${db.url}"/>
<property name="username" value="${db.user}"/>
<property name="password" value="${db.password}"/>
</bean>
</beans>
StackTrace：
SEVERE: org.springframework.messaging.MessagingException: Problem occurred while synchronizing remote to local directory
at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizer.synchronizeToLocalDirectory(AbstractInboundFileSynchronizer.java:209)
at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizingMessageSource.receive(AbstractInboundFileSynchronizingMessageSource.java:167)
at org.springframework.integration.endpoint.SourcePollingChannelAdapter.receiveMessage(SourcePollingChannelAdapter.java:144)
at org.springframework.integration.endpoint.AbstractPollingEndpoint.doPoll(AbstractPollingEndpoint.java:192)
at org.springframework.integration.endpoint.AbstractPollingEndpoint.access$000(AbstractPollingEndpoint.java:55)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$1.call(AbstractPollingEndpoint.java:149)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$1.call(AbstractPollingEndpoint.java:146)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller$1.run(AbstractPollingEndpoint.java:298)
at org.springframework.integration.util.ErrorHandlingTaskExecutor$1.run(ErrorHandlingTaskExecutor.java:52)
at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50)
at org.springframework.integration.util.ErrorHandlingTaskExecutor.execute(ErrorHandlingTaskExecutor.java:49)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$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.access$201(ScheduledThreadPoolExecutor.java:178)
at java.util.concurrent.ScheduledThreadPoolExecutor$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:745)
Caused by: org.springframework.messaging.MessagingException: Failed to obtain pooled item
at org.springframework.integration.util.SimplePool.getItem(SimplePool.java:177)
at org.springframework.integration.file.remote.session.CachingSessionFactory.getSession(CachingSessionFactory.java:118)
at org.springframework.integration.file.remote.RemoteFileTemplate.execute(RemoteFileTemplate.java:310)
at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizer.synchronizeToLocalDirectory(AbstractInboundFileSynchronizer.java:167)
... 20 more
Caused by: java.lang.IllegalStateException: failed to create SFTP Session
at org.springframework.integration.sftp.session.DefaultSftpSessionFactory.getSession(DefaultSftpSessionFactory.java:354)
at org.springframework.integration.file.remote.session.CachingSessionFactory$1.createForPool(CachingSessionFactory.java:76)
at org.springframework.integration.file.remote.session.CachingSessionFactory$1.createForPool(CachingSessionFactory.java:73)
at org.springframework.integration.util.SimplePool.doGetItem(SimplePool.java:187)
at org.springframework.integration.util.SimplePool.getItem(SimplePool.java:167)
... 23 more
Caused by: java.lang.IllegalStateException: failed to connect
at org.springframework.integration.sftp.session.SftpSession.connect(SftpSession.java:250)
at org.springframework.integration.sftp.session.DefaultSftpSessionFactory.getSession(DefaultSftpSessionFactory.java:349)
... 27 more
Caused by: com.jcraft.jsch.JSchException: SSH_MSG_DISCONNECT: 2 Too many authentication failures for oracle
at com.jcraft.jsch.Session.read(Session.java:987)
at com.jcraft.jsch.UserAuthPassword.start(UserAuthPassword.java:91)
at com.jcraft.jsch.Session.connect(Session.java:463)
at com.jcraft.jsch.Session.connect(Session.java:183)
at org.springframework.integration.sftp.session.SftpSession.connect(SftpSession.java:241)
... 28 more