Spring Integration TCP

Question

我想設置Spring TCP Server-Client應用程序。 我需要一個服務器監聽端口上的傳入消息，例如，6666，以及客戶端在不同的端口上發送消息，例如7777.我已經按照文檔 ，但我遇到了客戶期望的問題收到回復，但事實上，另一端只會收到來自客戶的消息，不會發送任何回復。 所以，基本上，我經常遇到這個錯誤：

o.s.i.ip.tcp.TcpOutboundGateway          : Tcp Gateway exception

org.springframework.integration.MessageTimeoutException: Timed out waiting for response

我發現這個答案類似的問題，所以我想答案在我的代碼整合。 這是我的Config類：

@EnableIntegration
@IntegrationComponentScan
@Configuration
public class Config {

private int port = 6666;

@MessagingGateway(defaultRequestChannel = "toTcp")
public interface Gateway {
    String viaTcp(String in);
}

@Bean
@ServiceActivator(inputChannel = "toTcp")
public TcpOutboundGateway tcpOutGate(AbstractClientConnectionFactory connectionFactory) {
    TcpOutboundGateway gate = new TcpOutboundGateway();
    gate.setConnectionFactory(connectionFactory);
    gate.setOutputChannelName("resultToString");
    gate.setRequiresReply(false);

   return gate;
}

@Bean
public TcpInboundGateway tcpInGate(AbstractServerConnectionFactory connectionFactory) {
    TcpInboundGateway inGate = new TcpInboundGateway();
    inGate.setConnectionFactory(connectionFactory);
    inGate.setRequestChannel(fromTcp());

    return inGate;
}

@Bean
public ByteArrayRawSerializer serializer() {
    return new ByteArrayRawSerializer();
}

@Bean
public MessageChannel fromTcp() {
    return new DirectChannel();
}

@MessageEndpoint
public static class Echo {

    @Transformer(inputChannel = "fromTcp", outputChannel = "toEcho")
    public String convert(byte[] bytes) {
        return new String(bytes);
    }

    @ServiceActivator(inputChannel = "toEcho")
    public String upCase(String in) {
        System.out.println("Server received: " + in);
        return in.toUpperCase();
    }

    @Transformer(inputChannel = "resultToString")
    public String convertResult(byte[] bytes) {
        return new String(bytes);
    }

}

@Bean
public AbstractClientConnectionFactory clientCF() {
    TcpNetClientConnectionFactory tcpNet = new TcpNetClientConnectionFactory("localhost", 7777);
    tcpNet.setDeserializer(serializer());
    tcpNet.setSerializer(serializer());
    tcpNet.setSingleUse(true);
    tcpNet.setTaskExecutor(new NullExecutor());
    return tcpNet;
}

@Bean
public AbstractServerConnectionFactory serverCF() {
    TcpNetServerConnectionFactory tcp = new TcpNetServerConnectionFactory(this.port);
    tcp.setSerializer(serializer());
    tcp.setDeserializer(serializer());
    return tcp;
}


public class NullExecutor implements Executor {

    public void execute(Runnable command) {}
}

}

這是我使用客戶端發送消息的方式：

@Autowired
private Gateway gateway;
gateway.viaTcp("Some message");

如何設置客戶端以使其不等待響應？

Answer 1

請參閱參考手冊 。

網關用於請求/回復交互，通道適配器用於單向交互。

使用TcpSendingMessageHandler和TcpReceivingChannelAdapter而不是入站和出站網關。