在 Golang 中的 google cloud 上設置 web socket，并導入在我的本地機器上運行良好的代碼在云上不起作用。我有：import "github.com/influxdb/influxdb/client/v2"并已運行go get "github.com/influxdb/influxdb/client/v2"運行 go run server.go 后，我得到：# command-line-arguments./pi_server.go:47: undefined: client.NewClient./pi_server.go:47: undefined: client.Config下面的完整代碼，不包括 const 聲明和 html：package mainimport (    "flag"    "html/template"    "log"    "net/http"    "github.com/gorilla/websocket"    "fmt"    "net/url"    "github.com/influxdb/influxdb/client/v2"    "time")var addr = flag.String("addr", "localhost:8080", "http service address")var upgrader = websocket.Upgrader{} // use default optionsfunc echo(w http.ResponseWriter, r *http.Request) {    //Influx init    u,err := url.Parse("http://localhost:8086")    checkError(err)    influx_c := client.NewClient(client.Config{            URL: u,            Username: username,            Password: password,     })    bp,err := client.NewBatchPoints(client.BatchPointsConfig{        Database:  MyDB,        Precision: "s",    })    tags := map[string]string{"my_sensor_id": my_sensor_id}    //end influx init    c, err := upgrader.Upgrade(w, r, nil)    if err != nil {        log.Print("upgrade:", err)        return    }    defer c.Close()    for {        mt, message, err := c.ReadMessage()        if err != nil {            log.Println("read:", err)            break        }        log.Printf("recv: %s", message)        /*            write to influx here        */         fields := map[string]interface{}{            "random_int":   message,            "other_stuff":  69696,        }        pt,err := client.NewPoint("test_collection", tags, fields, time.Now())        checkError(err)        bp.AddPoint(pt)        influx_c.Write(bp)        err = c.WriteMessage(mt, message)        if err != nil {            log.Println("write:", err)            break        }    }}func home(w http.ResponseWriter, r *http.Request) {    homeTemplate.Execute(w, "ws://"+r.Host+"/echo", )}