通过Google Place API添加位置时不断收到空响应

Question

I'm trying to add a place within app scope via google place API. For this I'm using golang. But I keep on getting no result, there is no error message.

Here is my code

```

type latlng struct {
   lat, lng float64
}
type newPlace struct {
   location     latlng
   accuracy     int
   name         string
   phone_number string
   address      string
   types        string
}

func main() {
   requestUrl := "https://maps.googleapis.com/maps/api/place/add/json?key=<MYAPIKEY>"

   obj := newPlace{
      location: latlng{
        lat: 52.1502824,
        lng: 38.2643063,
     },
      name:  "some field",
      types: "storage",
   }

   bodyBytes, err := json.Marshal(&obj)
   if err != nil {
      panic(err)
   }
   body := bytes.NewReader(bodyBytes)
   rsp, err := http.NewRequest("POST", requestUrl, body)
   if err != nil {
       log.Fatal(err)
   }
   defer rsp.Body.Close()

   body_byte, err := ioutil.ReadAll(rsp.Body)
   if err != nil {
       panic(err)
   }
   fmt.Println(string(body_byte))
}

```

Here is the documentation that I followed. https://developers.google.com/places/web-service/add-place

I'm a bit new to golang, any help would be much appreciated.

Answer 1

FYI I wrote this article on this touchy topic (JSON data encoded into a POST body request in Go).

You're missing 4 things here:

• the http.Client creation. Then you need to execute the request you're preparing with http.NewRequest by using client.Do.
• add json fields to your struct and export variables contained in struct by capitalizing variables's first letters
• set Content-Type to application/json
• Google is expecting an array instead of a string in types, so I replace with an array containing 1 string (but you should adapt this depending on how many types you want to pass to Google)

Here is a working script:

type latlng struct {
    Lat float64 `json:"lat"`
    Lng float64 `json:"lng"`
}

type newPlace struct {
    Location    latlng    `json:"location"`
    Accuracy    int       `json:"accuracy"`
    Name        string    `json:"name"`
    PhoneNumber string    `json:"phone_number"`
    Address     string    `json:"address"`
    Types       [1]string `json:"types"`
}

func main() {
    requestUrl := "https://maps.googleapis.com/maps/api/place/add/json?key=<your key>"

    types := [1]string{"storage"}
    obj := newPlace{
        Location: latlng{
            Lat: 52.1502824,
            Lng: 38.2643063,
        },
        Name:  "some field",
        Types: types,
    }

    bodyBytes, err := json.Marshal(&obj)
    if err != nil {
        fmt.Println(err)
    }
    body := bytes.NewReader(bodyBytes)
    client := &http.Client{}
    req, err := http.NewRequest("POST", requestUrl, body)
    req.Header.Add("Content-Type", "application/json")
    if err != nil {
        fmt.Println(err)
    }
    rsp, err := client.Do(req)
    defer rsp.Body.Close()

    body_byte, err := ioutil.ReadAll(rsp.Body)
    if err != nil {
        fmt.Println(err)
    }
    fmt.Println(string(body_byte))
}

Hope it's working now !