package main import ( "fmt" "net/http" "github.com/gin-gonic/gin" ) func main() { r := gin.Default() r.GET("/user", func(c *gin.Context) { name := c.Query("name") c.String(http.StatusOK, fmt.Sprintf("hello %s", name)) }) r.Run() } 上面代码使用了Gin框架，请写出请求链接，以测试程序的有效性。

请求链接为：http://localhost:8080/user?name=yourname。其中，localhost:8080为服务器地址和端口号，user为路由路径，name为查询参数，yourname为具体的参数值。你可以将yourname替换为任意字符串，然后在浏览器中访问该链接，即可得到响应结果。

相关问题

改正如下代码，要求可以正常运行package main import ( "fmt" "github.com/gin-gonic/gin" ) func TestMW(c *gin.Context) { c.String(200, "hello,%s", "ghz") } func MyMiddleware1(c *gin.Context) { fmt.Println("我的第一个中间件") } func MyMiddleware2(c *gin.Context) { fmt.Println("我的第二个中间件") } func main() { /* func Default() *Engine { debugPrintWARNINGDefault() engine := New() engine.Use(Logger(), Recovery()) return engine } */ // e := gin.Default() // e := gin.New() e := gin.Default() e.Use(MyMiddleware1, MyMiddleware2) e.GET("testmw", TestMW) e.Run() }

你需要将 MyMiddleware1 和 MyMiddleware2 函数的参数类型改为 gin.HandlerFunc，代码如下：

package main

import (
	"fmt"

	"github.com/gin-gonic/gin"
)

func TestMW(c *gin.Context) {
	c.String(200, "hello,%s", "ghz")
}

func MyMiddleware1() gin.HandlerFunc {
	return func(c *gin.Context) {
		fmt.Println("我的第一个中间件")
		c.Next()
	}
}

func MyMiddleware2() gin.HandlerFunc {
	return func(c *gin.Context) {
		fmt.Println("我的第二个中间件")
		c.Next()
	}
}

func main() {
	e := gin.Default()
	e.Use(MyMiddleware1(), MyMiddleware2())
	e.GET("testmw", TestMW)
	e.Run()
}

其中 MyMiddleware1 和 MyMiddleware2 函数需要返回一个 gin.HandlerFunc 类型的函数，这个返回的函数才能被 gin 使用。在返回的函数中，我们需要手动调用 c.Next()，以便让请求继续往下执行。

把这段代码转化为python代码（package service import ( "encoding/json" "errors" "fmt" "gin-syudy/api/device/req" "gin-syudy/define" "gin-syudy/models" "gin-syudy/mqtt" "gin-syudy/tools/resp" "gin-syudy/utils" mq "github.com/eclipse/paho.mqtt.golang" "github.com/gin-gonic/gin" "log" "net/http" "strconv" "time" ) // DeviceController 控制设备 // @BasePath /api/v1 // @Description 启动对应设备 // @Tags 启动设备 // @param identity query string false "Identity" // @param controllerId query string false "controllerId" // @param controlState query string false "controlState" // @Success 200 {object} resp.Response "{"code":200,"data":[...]}" // @Failure 502 {object} resp.Response "{"code":502,"data":[...]}" // @Router /api/v1/device/start [Post] func DeviceController(c *gin.Context) { device := new(models.DeviceBasic) write := new(mqtt.Write) device.Identity = c.Query("identity") id, _ := strconv.Atoi(c.Query("controllerId")) fmt.Println(id) state, _ := strconv.Atoi(c.Query("controllerState")) fmt.Println(state) write.Id = uint32(id) write.State = uint32(state) if device.Identity == "" { resp.RespFail(c, http.StatusBadGateway, errors.New("必填参数为空"), resp.FoundFail) return } deviceBasic := device.GetTopicByIdentity() subTopic := "Device/" + deviceBasic.ItemName + "/" + deviceBasic.BridgeName + "/control" + deviceBasic.Secret fmt.Println(subTopic) sendTopic := "Host/" + deviceBasic.ItemName + "/" + deviceBasic.BridgeName + "/control" + deviceBasic.Secret fmt.Println(sendTopic) dataChan := make(chan *mqtt.StartDataResp, 1) mqtt.SubscribeMessage(subTopic, func(client mq.Client, message mq.Message) { fmt.Printf("MESSAGE : %s\n", message.Payload()) fmt.Printf("TOPIC : %s\n", message.Topic()) subscribeStartData := new(mqtt.StartDataResp) err := json.Unmarshal(message.Payload(), &subscribeStartData) if err != nil { resp.RespFail(c, http.StatusBadGateway, err, "回调函数格式不正确") return } dataChan <- subscribeStartData }) startData := new(mqtt.StartData) startData.SampTime = time.Now().String() startData.CommandID = utils.GetUUid() startData.Write = write data, _ := json.Marshal(startData) err := mqtt.SendMessage(sendTopic, data) if err != nil { resp.RespFail(c, http.StatusBadGateway, err, resp.FoundFail) return } responseMessage := <-dataChan err, _ = mqtt.Unsubscribe(sendTopic) if err != nil { resp.RespFail(c, http.StatusBadGateway, err, "取消订阅失败") return } resp.RespOK(c, responseMessage, "控制成功") }）

以下是将给定的 Go 代码翻译为 Python 的代码：

import json
import logging
import time
from http import HTTPStatus

import paho.mqtt.client as mqtt
from flask import jsonify, request

from service.models import DeviceBasic
from service.mqtt import SendMessage, SubscribeMessage, Unsubscribe
from service.tools.resp import RespFail, RespOK
from service.utils import GetUUid

# DeviceController
# 控制设备
# @BasePath /api/v1
# @Description 启动对应设备
# @Tags 启动设备
# @param identity query string false "Identity"
# @param controllerId query string false "controllerId"
# @param controlState query string false "controlState"
# @Success 200 {object} resp.Response "{"code":200,"data":[...]}"
# @Failure 502 {object} resp.Response "{"code":502,"data":[...]}"
# @Router /api/v1/device/start [Post]
def DeviceController():
    device = DeviceBasic()
    device.identity = request.args.get('identity', '')
    id = int(request.args.get('controllerId', 0))
    logging.debug(f"id: {id}")
    state = int(request.args.get('controllerState', 0))
    logging.debug(f"state: {state}")

    write = Write()
    write.id = id
    write.state = state

    if not device.identity:
        RespFail(HTTPStatus.BAD_GATEWAY, errors=["必填参数为空"])
        return

    deviceBasic = device.GetTopicByIdentity()
    subTopic = f"Device/{deviceBasic.ItemName}/{deviceBasic.BridgeName}/control{deviceBasic.Secret}"
    logging.debug(f"subTopic: {subTopic}")
    sendTopic = f"Host/{deviceBasic.ItemName}/{deviceBasic.BridgeName}/control{deviceBasic.Secret}"
    logging.debug(f"sendTopic: {sendTopic}")

    dataChan = []
    def on_message(client, userdata, message):
        logging.debug(f"MESSAGE : {message.payload}")
        logging.debug(f"TOPIC : {message.topic}")
        subscribeStartData = mqtt.StartDataResp()
        try:
            subscribeStartData = json.loads(message.payload)
        except json.JSONDecodeError as e:
            RespFail(HTTPStatus.BAD_GATEWAY, errors=[f"回调函数格式不正确: {str(e)}"])
            return
        dataChan.append(subscribeStartData)

    mqtt.SubscribeMessage(subTopic, on_message)

    startData = mqtt.StartData()
    startData.SampTime = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime())
    startData.CommandID = GetUUid()
    startData.Write = write
    data = json.dumps(startData, default=lambda obj: obj.__dict__, ensure_ascii=False)
    err = SendMessage(sendTopic, data.encode())
    if err:
        RespFail(HTTPStatus.BAD_GATEWAY, errors=[err])
        return

    responseMessage = dataChan[0]
    err = Unsubscribe(sendTopic)
    if err:
        RespFail(HTTPStatus.BAD_GATEWAY, errors=[f"取消订阅失败: {err}"])
        return

    RespOK(responseMessage, message="控制成功")