Spring SFTP入站通道不下载文件

我想从sftp服务器下载txt文件，但我的入站频道只创建文件夹，不将文件下载到目录中。一旦连接到SFTP服务器，就会给出错误信息。请查看stacktrace。 我使用的是SpringIntegration4

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>

---

这不是Spring集成问题，所以请检查这里和这里。或者干脆自己在谷歌上搜索一下！

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