我正在开发一个从ftp连接读取数据的spring boot应用程序。一直在推荐这篇文章。 http://docs.spring.io/spring-integration/reference/html/ftp.html我已将以下依赖项添加到pom.xml：
<dependency>
<groupId>org.springframework.integration</groupId>
<artifactId>spring-integration-ftp</artifactId>
<version>4.3.2.RELEASE</version>
</dependency>
这是我的Spring启动应用程序：
@SpringBootApplication
public class FtpApplication {
public static void main(String[] args) {
SpringApplication.run(FtpApplication.class, args);
}
@Bean
public SessionFactory<FTPFile> ftpSessionFactory() {
DefaultFtpSessionFactory sf = new DefaultFtpSessionFactory();
sf.setHost("localhost");
sf.setPort(14147);
sf.setUsername("root");
sf.setPassword("root");
return new CachingSessionFactory<FTPFile>(sf);
}
@Bean
public FtpInboundFileSynchronizer ftpInboundFileSynchronizer() {
FtpInboundFileSynchronizer fileSynchronizer = new FtpInboundFileSynchronizer(ftpSessionFactory());
fileSynchronizer.setDeleteRemoteFiles(false);
fileSynchronizer.setRemoteDirectory("/");
fileSynchronizer.setFilter(new FtpSimplePatternFileListFilter("*.xml"));
return fileSynchronizer;
}
@Bean
@InboundChannelAdapter(channel = "ftpChannel")
public MessageSource<File> ftpMessageSource() {
FtpInboundFileSynchronizingMessageSource source = new FtpInboundFileSynchronizingMessageSource(
ftpInboundFileSynchronizer());
source.setLocalDirectory(new File("ftp-inbound"));
source.setAutoCreateLocalDirectory(true);
source.setLocalFilter(new AcceptOnceFileListFilter<File>());
return source;
}
@Bean
@ServiceActivator(inputChannel = "ftpChannel")
public MessageHandler handler() {
return new MessageHandler() {
@Override
public void handleMessage(Message<?> message) throws MessagingException {
File file = (File) message.getPayload();
BufferedReader br;
String sCurrentLine;
try {
br = new BufferedReader(new FileReader(file.getPath()));
while ((sCurrentLine = br.readLine()) != null) {
System.out.println(sCurrentLine);
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
System.out.println(message.getPayload());
}
};
}
@Bean(name = PollerMetadata.DEFAULT_POLLER)
public PollerMetadata defaultPoller() {
PollerMetadata pollerMetadata = new PollerMetadata();
pollerMetadata.setTrigger(new PeriodicTrigger(10));
return pollerMetadata;
}
}
从Windows资源管理器中我添加了一个文件。现在，当控件进入MessageHandler函数时，我看到以下错误。但我可以整齐地获取文件，并在阅读时正确地看到内容。但我无法弄清楚错误是什么：
2016-09-27 08:25:07.548 ERROR 10292 --- [ask-scheduler-1] o.s.integration.handler.LoggingHandler : org.springframework.messaging.MessagingException: Problem occurred while synchronizing remote to local directory; nested exception is org.springframework.messaging.MessagingException: Failed to obtain pooled item; nested exception is java.lang.IllegalStateException: failed to create FTPClient
at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizer.synchronizeToLocalDirectory(AbstractInboundFileSynchronizer.java:274)
at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizingMessageSource.doReceive(AbstractInboundFileSynchronizingMessageSource.java:193)
at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizingMessageSource.doReceive(AbstractInboundFileSynchronizingMessageSource.java:59)
at org.springframework.integration.endpoint.AbstractMessageSource.receive(AbstractMessageSource.java:134)
at org.springframework.integration.endpoint.SourcePollingChannelAdapter.receiveMessage(SourcePollingChannelAdapter.java:209)
at org.springframework.integration.endpoint.AbstractPollingEndpoint.doPoll(AbstractPollingEndpoint.java:245)
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:745)
Caused by: org.springframework.messaging.MessagingException: Failed to obtain pooled item; nested exception is java.lang.IllegalStateException: failed to create FTPClient
at org.springframework.integration.util.SimplePool.getItem(SimplePool.java:178)
at org.springframework.integration.file.remote.session.CachingSessionFactory.getSession(CachingSessionFactory.java:123)
at org.springframework.integration.file.remote.RemoteFileTemplate.execute(RemoteFileTemplate.java:433)
at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizer.synchronizeToLocalDirectory(AbstractInboundFileSynchronizer.java:232)
... 22 more
Caused by: java.lang.IllegalStateException: failed to create FTPClient
at org.springframework.integration.ftp.session.AbstractFtpSessionFactory.getSession(AbstractFtpSessionFactory.java:169)
at org.springframework.integration.ftp.session.AbstractFtpSessionFactory.getSession(AbstractFtpSessionFactory.java:41)
at org.springframework.integration.file.remote.session.CachingSessionFactory$1.createForPool(CachingSessionFactory.java:81)
at org.springframework.integration.file.remote.session.CachingSessionFactory$1.createForPool(CachingSessionFactory.java:78)
at org.springframework.integration.util.SimplePool.doGetItem(SimplePool.java:188)
at org.springframework.integration.util.SimplePool.getItem(SimplePool.java:169)
... 25 more
Caused by: org.apache.commons.net.MalformedServerReplyException: Could not parse response code.
Server Reply: FZS ..... some speacial characters here.....
at org.apache.commons.net.ftp.FTP.__getReply(FTP.java:336)
at org.apache.commons.net.ftp.FTP.__getReply(FTP.java:292)
at org.apache.commons.net.ftp.FTP._connectAction_(FTP.java:418)
at org.apache.commons.net.ftp.FTPClient._connectAction_(FTPClient.java:966)
at org.apache.commons.net.ftp.FTPClient._connectAction_(FTPClient.java:954)
at org.apache.commons.net.SocketClient.connect(SocketClient.java:189)
at org.apache.commons.net.SocketClient.connect(SocketClient.java:209)
at org.springframework.integration.ftp.session.AbstractFtpSessionFactory.createClient(AbstractFtpSessionFactory.java:191)
at org.springframework.integration.ftp.session.AbstractFtpSessionFactory.getSession(AbstractFtpSessionFactory.java:166)
... 30 more
我是Spring集成的新手，请帮忙。让我知道我应该考虑准备的概念。
答案 0 :(得分：1)
您最有可能连接到FileZilla FTP服务器管理端口（14147）。
该端口使用“FileZilla服务器接口”使用的专有协议，而不是FTP，并且您不应该使用您的应用程序连接它。
改为连接到FTP端口。默认情况下为21.它在“FileZilla Server Options”的“General Settings”页面的“FileZilla Server Interface”中配置为“Listen to these ports”。