如何在spring boot中创建Tcp连接以接受连接？

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-integration</artifactId>
</dependency>

import org.springframework.integration.annotation.MessagingGateway;
import org.springframework.integration.annotation.ServiceActivator;
import org.springframework.messaging.Message;

@MessagingGateway(defaultRequestChannel = "tcpInputChannel")
public interface TcpServerGateway {
    @ServiceActivator(inputChannel = "tcpInputChannel")
    void handleMessage(Message<?> message);
}

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.integration.annotation.IntegrationComponentScan;
import org.springframework.integration.channel.DirectChannel;
import org.springframework.integration.config.EnableIntegration;
import org.springframework.integration.ip.tcp.TcpReceivingChannelAdapter;
import org.springframework.integration.ip.tcp.connection.AbstractServerConnectionFactory;
import org.springframework.integration.ip.tcp.connection.TcpNetServerConnectionFactory;

@Configuration
@EnableIntegration
@IntegrationComponentScan
public class TcpServerConfig {
    @Bean
    public AbstractServerConnectionFactory tcpServerConnectionFactory() {
        return new TcpNetServerConnectionFactory(1234);
    }

    @Bean
    public TcpReceivingChannelAdapter tcpReceivingChannelAdapter(AbstractServerConnectionFactory connectionFactory,
                                                               TcpServerGateway gateway) {
        TcpReceivingChannelAdapter adapter = new TcpReceivingChannelAdapter();
        adapter.setConnectionFactory(connectionFactory);
        adapter.setOutputChannel(tcpInputChannel());
        adapter.setBeanFactory(gateway);
        return adapter;
    }

    @Bean
    public DirectChannel tcpInputChannel() {
        return new DirectChannel();
    }
}

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;

@SpringBootApplication
public class TcpServerApplication {
    public static void main(String[] args) {
        ConfigurableApplicationContext context = SpringApplication.run(TcpServerApplication.class, args);
        TcpServerGateway gateway = context.getBean(TcpServerGateway.class);
    }
}