基于springboot设计的物联网平台，其实现mqtt协议、http协议、coap协议接入，示范代码中http协议单独的网关接口，列出代码依赖项，mqtt协议部分单独的网关接口，列出代码依赖项，coap协议部分单独的网关接口，列出代码依赖项，并提供示范代码

对于基于Spring Boot设计的物联网平台，实现MQTT协议、HTTP协议、CoAP协议接入，以下是相关的示例代码和依赖项：

1. HTTP协议单独的网关接口

依赖项：

<dependencies>
    <dependency>
        <groupId>org.springframework.integration</groupId>
        <artifactId>spring-integration-http</artifactId>
    </dependency>
</dependencies>

示例代码：

@Configuration
@EnableIntegration
public class HttpGatewayConfig {

    @Bean
    public IntegrationFlow httpGatewayFlow() {
        return IntegrationFlows.from(Http.inboundGateway("/api")
                        .requestMapping(r -> r.methods(HttpMethod.POST))
                        .requestPayloadType(String.class))
                .handle(message -> {
                    String payload = message.getPayload().toString();
                    // process the received message
                })
                .get();
    }

    @Bean
    public RestTemplate restTemplate() {
        return new RestTemplate();
    }

    @Bean
    public IntegrationFlow httpOutboundGatewayFlow() {
        return IntegrationFlows.from(MessageChannels.direct("httpOutboundChannel"))
                .handle(Http.outboundGateway("http://example.com"))
                .get();
    }

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

2. MQTT协议单独的网关接口

依赖项：

<dependencies>
    <dependency>
        <groupId>org.springframework.integration</groupId>
        <artifactId>spring-integration-mqtt</artifactId>
    </dependency>
</dependencies>

示例代码：

@Configuration
@EnableIntegration
public class MqttGatewayConfig {

    @Bean
    public IntegrationFlow mqttGatewayFlow() {
        return IntegrationFlows.from(Mqtt.inboundGateway("mqttTopic")
                        .clientId("clientId")
                        .mqttVersion(MqttVersion.MQTT_3_1_1)
                        .converter(new DefaultPahoMessageConverter())
                        .qos(2))
                .handle(message -> {
                    String payload = message.getPayload().toString();
                    // process the received message
                })
                .get();
    }

    @Bean
    public IntegrationFlow mqttOutboundGatewayFlow() {
        return IntegrationFlows.from(MessageChannels.direct("mqttOutboundChannel"))
                .handle(Mqtt.outboundGateway("tcp://mqtt.eclipse.org")
                        .clientId("clientId")
                        .mqttVersion(MqttVersion.MQTT_3_1_1)
                        .converter(new DefaultPahoMessageConverter())
                        .qos(2)
                        .defaultTopic("mqttTopic"))
                .get();
    }

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

3. CoAP协议单独的网关接口

依赖项：

<dependencies>
    <dependency>
        <groupId>org.eclipse.californium</groupId>
        <artifactId>californium-core</artifactId>
        <version>2.0.0-M4</version>
    </dependency>

    <dependency>
        <groupId>org.springframework.integration</groupId>
        <artifactId>spring-integration-core</artifactId>
    </dependency>
</dependencies>

示例代码：

@Configuration
@EnableIntegration
public class CoapGatewayConfig {

    @Bean
    public IntegrationFlow coapGatewayFlow() {
        return IntegrationFlows.from(Coap.inboundGateway("/api"))
                .handle(message -> {
                    String payload = message.getPayload().toString();
                    // process the received message
                })
                .get();
    }

    @Bean
    public IntegrationFlow coapOutboundGatewayFlow() {
        return IntegrationFlows.from(MessageChannels.direct("coapOutboundChannel"))
                .handle(Coap.outboundGateway("coap://example.com/path")
                        .uriVariable("variableName", "variableValue"))
                .get();
    }

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