package main

                                        import (
                                            "encoding/json"
                                            "encoding/xml"
                                            "fmt"
                                            "io/ioutil"
                                            "net/http"
                                        )

                                        const (
                                            URL   = "https://api.ip138.com/weather/"
                                            TOKEN = "bd4c2bf9a38ab06f7cae88c9759ee172"
                                        )

                                        //----------------------------------
                                        // 调用示例代码
                                        //----------------------------------

                                        //json struct
                                       type weatherInfoJson struct {
                                                Ret      string    `json:"ret"`
                                                Code     int       `json:"code"`
                                                Province string    `json:"province"`
                                                City     string    `json:"city"`
                                                Area     string    `json:"area"`
                                                Data     todayData `json:"data"`
                                        }

                                        type todayData struct {
                                                Time         string `json:"time"`
                                                DayWeather   string `json:"dayWeather"`
                                                DayTemp      string `json:"dayTemp"`
                                                DayWind      string `json:"dayWind"`
                                                NightWeather string `json:"nightWeather"`
                                                NightTemp    string `json:"nightTemp"`
                                                NightWind    string `json:"nightWind"`
                                                Temp         string `json:"temp"`
                                                Weather      string `json:"weather"`
                                                Wind         string `json:"wind"`
                                                Humidity     string `json:"humidity"`
                                                Pm25         string `json:"pm25"`
                                        }

                                        func getWeather(code int) {

                                            queryUrl := fmt.Sprintf("%s?code=%d&type=%d",URL,code,1)
                                            client := &http.Client{}
                                            reqest, err := http.NewRequest("GET",queryUrl,nil)

                                            if err != nil {
                                                fmt.Println("Fatal error ",err.Error())
                                            }

                                            reqest.Header.Add("token",TOKEN)
                                            response, err := client.Do(reqest)
                                            defer response.Body.Close()

                                            if err != nil {
                                                fmt.Println("Fatal error ",err.Error())
                                            }
                                            if response.StatusCode == 200 {
                                                bodyByte, _ := ioutil.ReadAll(response.Body)
                                                var info weatherInfoJson
                                                json.Unmarshal(bodyByte,&info)
                                                fmt.Println(info.Ip)
                                            }

                                            return
                                        }