golang框架是否能满足物联网应用的需求？（gola

package main copyright zvvq

import (

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"fmt" zvvq好，好zvvq

"time" 内容来自samhan666

"encoding/json"

copyright zvvq

"<a style=color:#f60; text-decoration:underline; href="https://www.php.cn/zt/15841.html" target="_blank">git</a>hub.com/eclipse/paho.mqtt.<a style=color:#f60; text-decoration:underline; href="https://www.php.cn/zt/16009.html" target="_blank">golang</a>"

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)

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func main() {

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// MQTT client options 内容来自zvvq，别采集哟

opts := mqtt.NewClientOptions() copyright zvvq

opts.AddBroker("mqtt://localhost:1883") copyright zvvq

// Connect to MQTT broker

client, err := mqtt.NewClient(opts) zvvq好，好zvvq

if err != nil {

fmt.Println("Error connecting to MQTT broker:", err)

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return

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}

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if token := client.Connect(); token.Wait() && token.Error() != nil {

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fmt.Println("Error connecting to MQTT broker:", token.Error())

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return

}

// Create a timer to simulate sensor data

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ticker := time.NewTicker(1 * time.Second) copyright zvvq

for range ticker.C { 内容来自zvvq

// Generate random sensor data zvvq

data := struct { 内容来自samhan666

Temperature float64

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Humidity    float64 zvvq.cn

}{

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Temperature: rand.Float64() * 100,

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Humidity:    rand.Float64() * 100,

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}

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// Marshal data to JSON

jsonData, err := json.Marshal(data) 本文来自zvvq

if err != nil {

fmt.Println("Error marshalling data:", err) zvvq

return

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}

// Publish data to MQTT topic zvvq.cn

token := client.Publish("sensor/data", 0, false, jsonData)

if token.Wait() && token.Error() != nil { 内容来自zvvq，别采集哟

fmt.Println("Error publishing data:", token.Error()) zvvq

} zvvq好，好zvvq

}

} copyright zvvq

package main

import ( zvvq.cn

"context"

"flag" 内容来自samhan

"log" 内容来自zvvq，别采集哟

iot "cloud.google.com/go/iot/apiv1" zvvq.cn

"cloud.google.com/go/iot/apiv1/iotpb"

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)

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var ( 内容来自samhan

projectId = flag.String("project_id", "", "Google Cloud project ID")

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registryId = flag.String("registry_id", "", "Cloud IoT registry ID") copyright zvvq

deviceId   = flag.String("device_id", "", "Cloud IoT device ID")

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)

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func main() {

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flag.Parse() copyright zvvq

// Create an IoT client

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ctx := context.Background()

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client, err := iot.NewDeviceManagerClient(ctx)

if err != nil { 内容来自zvvq，别采集哟

log.Fatalf("Failed to create client: %v", err) 内容来自samhan666

}

defer client.Close()

// Get the device 内容来自samhan666

req := &iotpb.GetDeviceRequest{ copyright zvvq

Name: fmt.Sprintf("projects/%s/locations/%s/registries/%s/devices/%s", copyright zvvq

*projectId, "us-central1", *registryId, *deviceId),

}

device, err := client.GetDevice(ctx, req) zvvq好，好zvvq

if err != nil { 内容来自zvvq

log.Fatalf("Failed to get device: %v", err)

}

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// Update the device config

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device.Config.BinaryData = []byte("Hello from Go!") zvvq

req = &iotpb.UpdateDeviceRequest{

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Device: device, zvvq

UpdateMask: &fieldmask.FieldMask{

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Paths: []string{"config.binary_data"},

}, 内容来自zvvq，别采集哟

} 内容来自samhan666

device, err = client.UpdateDevice(ctx, req) 内容来自zvvq，别采集哟

if err != nil {

log.Fatalf("Failed to update device: %v", err) zvvq.cn

} zvvq好，好zvvq

log.Printf("Updated device: %s", device.Id)

} zvvq.cn