[英]How to configure spring-integration-sftp to move a remote file after it has been downloaded to local filesystem?
[英]How to configure spring integration adapters to get and put a file via SFTP
我正在嘗試使用 Spring 集成來實現以下場景:
輸入通道應輪詢 SFTP 站點以獲取將其存儲在本地“stfp-inbound”文件夾中的文件。 output 通道應將本地“sftp-outbound”文件夾中的現有文件推送到 SFTP 站點。 我從輸入通道開始。 到目前為止它一直有效,但顯然非常 static。
到目前為止,這是我的配置:
@Component
public class SftpClient {
private static final Logger LOG = LoggerFactory.getLogger(SftpClient.class);
@Bean
public IntegrationFlow sftpInboundFlow() {
return IntegrationFlows
.from(Sftp.inboundAdapter(sftpSessionFactory())
.preserveTimestamp(true)
.remoteDirectory("data")
.regexFilter(".*\\.txt$")
// .localFilenameExpression("#this.toUpperCase() + '.a'")
.localDirectory(new File("ftp-inbound")),
e -> e.id("sftpInboundAdapter")
.autoStartup(true)
.poller(Pollers.fixedDelay(5000)))
.handle(m -> System.out.println(m.getPayload()))
.get();
}
@Bean
public IntegrationFlow sftpOutboundFlow() {
return IntegrationFlows.from("toSftpChannel")
.handle(Sftp.outboundAdapter(sftpSessionFactory(), FileExistsMode.FAIL)
.useTemporaryFileName(false)
.remoteDirectory("/data")
).get();
}
@Bean
public SessionFactory<LsEntry> sftpSessionFactory() {
// // with private key resource: catch MalformedURLException
// try {
DefaultSftpSessionFactory factory = new DefaultSftpSessionFactory(true);
factory.setHost("myHost");
factory.setPort(22);
factory.setUser("myUser");
factory.setPassword("myPassword");
// factory.setPrivateKey(new FileUrlResource("/Users/myUser/.ssh/id_rsa"));
// factory.setPrivateKeyPassphrase("passphrase");
factory.setAllowUnknownKeys(true);
return new CachingSessionFactory<LsEntry>(factory);
// }
// catch (MalformedURLException e) {
// throw new IllegalArgumentException("malformed URL");
// }
}
我需要建議來制定更動態的方法。 我想象一個組件 class 使用公共方法sftpGet()和sftpPut()來獲取和放置文件,而通道是由集成流創建的,具有構成 SFTP 傳輸所需的參數:主機名、端口、用戶、密碼、遠程目錄,本地目錄。
我怎樣才能做到這一點?
我在類似的 TCP/IP 通道場景中得到了很好的提示,但我無法將這些解決方案轉換為這個 SFTP 場景。
請指教!
在接受了 Gary 的建議后,我做了一個愚蠢的動態 Bean:
@Component
public class DynamicSftpTemplate implements InputStreamCallback {
private static Logger LOG = LoggerFactory.getLogger(DynamicSftpTemplate.class);
private String localDir;
private String localFilename;
public void getSftpFile(String sessionId, String host, int port, String user, String password,
String remoteDir, String remoteFilename, String localDir, String localFilename) {
LOG.debug("getSftpFile sessionId={}", sessionId);
ioSftpFile(GET, host, port, user, password,
remoteDir, remoteFilename, localDir, localFilename);
}
public void putSftpFile(String sessionId, String host, int port, String user, String password,
String remoteDir, String remoteFilename, String localDir, String localFilename) {
LOG.debug("putSftpFile sessionId={}", sessionId);
ioSftpFile(PUT, host, port, user, password,
remoteDir, remoteFilename, localDir, localFilename);
}
public void rmSftpFile(String sessionId, String host, int port, String user, String password,
String remoteDir, String remoteFilename) {
LOG.debug("rmSftpFile sessionId={}", sessionId);
ioSftpFile(RM, host, port, user, password, remoteDir, remoteFilename, null, null);
}
private void ioSftpFile(SftpOperationType op, String host, int port, String user, String password,
String remoteDir, String remoteFilename, String localDir, String localFilename) {
LOG.debug("ioSftpFile op={}, host={}, port={}", op, host, port);
LOG.debug("ioSftpFile user={}, password={}", user, password);
SftpRemoteFileTemplate template = new SftpRemoteFileTemplate(sftpSessionFactory(host, port, user, password));
template.setFileNameExpression(new LiteralExpression(remoteDir + "/" + remoteFilename));
template.setRemoteDirectoryExpression(new LiteralExpression(remoteDir));
//template.afterPropertiesSet();
this.localDir = localDir;
this.localFilename = localFilename;
if (op == GET) {
// template.get(buildGetMessage(remoteDir, remoteFilename), (InputStreamCallback) this);
template.get(remoteDir + "/" + remoteFilename, this);
}
else if (op == PUT) {
template.send(buildPutMessage(remoteDir, remoteFilename), FileExistsMode.REPLACE);
}
else if (op == RM) {
template.remove(remoteDir + "/" + remoteFilename);
}
else {
throw new IllegalArgumentException("invalid sftp operation, " + op);
}
}
private DefaultSftpSessionFactory sftpSessionFactory(String host, int port, String user, String password) {
LOG.debug("sftpSessionFactory");
DefaultSftpSessionFactory factory = new DefaultSftpSessionFactory(true);
factory.setHost(host);
factory.setPort(port);
factory.setUser(user);
factory.setPassword(password);
factory.setAllowUnknownKeys(true);
return factory;
}
private Message<?> buildPutMessage(String remoteDir, String remoteFilename) {
return MessageBuilder.withPayload(new File(this.localDir + "/" + this.localFilename))
.setHeader("file_remoteDirectory", remoteDir)
.setHeader("file_remoteFile", remoteFilename)
.build();
}
public void doWithInputStream(InputStream is) throws IOException {
LOG.debug("doWithInputStream");
String fullPathName = this.localDir + "/" + this.localFilename;
FileWriter w = new FileWriter(fullPathName);
IOUtils.copy(is, w, "UTF-8");
LOG.debug("doWithInputStream file {} written", fullPathName);
w.close();
is.close();
}
}
您可以使用SFTP 網關獲取和放置文件(以及其他操作)。
或者,您可以直接使用SftpRemoteFileTemplate
。
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