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[英]Spring Integration JPA inbound channel adapter with transactional poller Java configuration
[英]Spring Integration : Inbound Channel Adapter configuration via annotations
如何通过注释而不是常规配置文件配置入站通道适配器? 我能够为会话工厂定义bean,但是在下面:
@Bean
public DefaultFtpSessionFactory ftpSessionFactory() {
DefaultFtpSessionFactory ftpSessionFactory = new
DefaultFtpSessionFactory();
ftpSessionFactory.setHost(host);
ftpSessionFactory.setPort(port);
ftpSessionFactory.setUsername(username);
ftpSessionFactory.setPassword(password);
return ftpSessionFactory;
}
如何配置在via注释下给出的入站通道适配器?
<int-ftp:inbound-channel-adapter id="ftpInbound"
channel="ftpChannel"
session-factory="ftpSessionFactory"
filename-pattern="*.xml"
auto-create-local-directory="true"
delete-remote-files="false"
remote-directory="/"
local-directory="ftp-inbound"
local-filter="acceptOnceFilter">
<int:poller fixed-delay="60000" max-messages-per-poll="-1">
<int:transactional synchronization-factory="syncFactory" />
</int:poller>
</int-ftp:inbound-channel-adapter>
@Artem Bilan修改后的代码如下
@EnableIntegration
@Configuration
public class FtpConfiguration {
@Value("${ftp.host}")
private String host;
@Value("${ftp.port}")
private Integer port;
@Value("${ftp.username}")
private String username;
@Value("${ftp.password}")
private String password;
@Value("${ftp.fixed.delay}")
private Integer fixedDelay;
@Value("${ftp.local.directory}")
private String localDirectory;
private final static Logger LOGGER = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
@Bean
public SessionFactory<FTPFile> ftpSessionFactory() {
DefaultFtpSessionFactory sessionFactory = new DefaultFtpSessionFactory();
sessionFactory.setHost(host);
sessionFactory.setPort(port);
sessionFactory.setUsername(username);
sessionFactory.setPassword(password);
return new CachingSessionFactory<FTPFile>(sessionFactory);
}
@Bean
public FtpInboundFileSynchronizer ftpInboundFileSynchronizer() {
FtpInboundFileSynchronizer fileSynchronizer = new FtpInboundFileSynchronizer(ftpSessionFactory());
fileSynchronizer.setDeleteRemoteFiles(false);
fileSynchronizer.setRemoteDirectory("/");
fileSynchronizer.setFilter(new FtpSimplePatternFileListFilter("*.xml"));
return fileSynchronizer;
}
@Bean
@InboundChannelAdapter(value = "ftpChannel",
poller = @Poller(fixedDelay = "60000", maxMessagesPerPoll = "-1"))
public MessageSource<File> ftpMessageSource() {
FtpInboundFileSynchronizingMessageSource source =
new FtpInboundFileSynchronizingMessageSource(ftpInboundFileSynchronizer());
source.setLocalDirectory(new File(localDirectory));
source.setAutoCreateLocalDirectory(true);
source.setLocalFilter(new AcceptOnceFileListFilter<File>());
return source;
}
}
运行这个时,我得到一个例外,因为定义了名为'ftpChannel'的无bean
请注意,在为入站通道适配器连接时,“channel”关键字不可用,而是“值”。
我尝试用PollableChannel连接频道,但这也是徒劳的。 它如下:
@Bean
public MessageChannel ftpChannel() {
return new PollableChannel() {
@Override
public Message<?> receive() {
return this.receive();
}
@Override
public Message<?> receive(long l) {
return null;
}
@Override
public boolean send(Message<?> message) {
return false;
}
@Override
public boolean send(Message<?> message, long l) {
return false;
}
};
}
我收到错误“无法在超时内发送消息:-1”。我还做错了什么?
我正在寻找的是在应用程序启动时连接所有bean,然后公开一些方法来开始轮询服务器,处理它们然后从本地删除它们,像这样的东西
public void startPollingTheServer() {
getPollableChannel().receive();
}
其中getPollableChannel()为我提供了我为Polling连接的bean。
你有一个@InboundChannelAdapter
。
@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;
}
另外,请参阅参考手册 。
另请注意, 对于Spring Integration的Java DSL ,其中可能看起来像:
@Bean
public IntegrationFlow ftpInboundFlow() {
return IntegrationFlows
.from(s -> s.ftp(this.ftpSessionFactory)
.preserveTimestamp(true)
.remoteDirectory("ftpSource")
.regexFilter(".*\\.txt$")
.localFilename(f -> f.toUpperCase() + ".a")
.localDirectory(this.ftpServer.getTargetLocalDirectory()),
e -> e.id("ftpInboundAdapter").autoStartup(false))
.channel(MessageChannels.queue("ftpInboundResultChannel"))
.get();
}
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