显示 URL 的代码而不是 Go 请求 GCP 的响应
Code displaying an URL rather than the reponse of the request GCP with Go
我很难尝试在 Google 云平台中显示方向请求的结果。这是我试过的:
package main
import (
"fmt"
"net/http"
"context"
"io/ioutil"
"google.golang.org/appengine"
"google.golang.org/appengine/urlfetch"
)
const directionAPIKey = "MyAppKey"
const directionURL = "https://maps.googleapis.com/maps/api/directions/json?origin=%s&destination=%s&mode=%s&key=%s"
func main() {
http.HandleFunc("/", handler)
}
func handler(w http.ResponseWriter, r *http.Request) {
ctx := appengine.NewContext(r)
direction, err := fetchDirection(ctx, r.FormValue("origin"), r.FormValue("destination"), r.FormValue("mode"))
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
w.Header().Add("Content-Type", "application/json; charset=utf-8")
w.Write(direction)
}
func fetchDirection(ctx context.Context, origin string, destination string, mode string) ([]byte, error) {
client := urlfetch.Client(ctx)
resp, err := client.Get(fmt.Sprintf(directionURL, origin, destination, mode, directionAPIKey))
if err != nil {
return nil, err
}
defer resp.Body.Close()
return ioutil.ReadAll(resp.Body)
}
我成功部署了我的应用程序,但是,上面代码的结果是:
Get https://maps.googleapis.com/maps/api/directions/json?origin=&destination=&mode=&key=APIKey not an App Engine context
而不是请求的结果。这是来自浏览器的 image。我怎样才能得到想要的结果,而不仅仅是 URL?提前致谢。
我 当您的 AppEngine 应用程序将运行时设置为 go111 并且应用程序导入任何“google.golang.org/appengine”包,但应用程序不调用“appengine.Main”
method func main() {
http.HandleFunc("/", handler)
appengine.Main()
}
我很难尝试在 Google 云平台中显示方向请求的结果。这是我试过的:
package main
import (
"fmt"
"net/http"
"context"
"io/ioutil"
"google.golang.org/appengine"
"google.golang.org/appengine/urlfetch"
)
const directionAPIKey = "MyAppKey"
const directionURL = "https://maps.googleapis.com/maps/api/directions/json?origin=%s&destination=%s&mode=%s&key=%s"
func main() {
http.HandleFunc("/", handler)
}
func handler(w http.ResponseWriter, r *http.Request) {
ctx := appengine.NewContext(r)
direction, err := fetchDirection(ctx, r.FormValue("origin"), r.FormValue("destination"), r.FormValue("mode"))
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
w.Header().Add("Content-Type", "application/json; charset=utf-8")
w.Write(direction)
}
func fetchDirection(ctx context.Context, origin string, destination string, mode string) ([]byte, error) {
client := urlfetch.Client(ctx)
resp, err := client.Get(fmt.Sprintf(directionURL, origin, destination, mode, directionAPIKey))
if err != nil {
return nil, err
}
defer resp.Body.Close()
return ioutil.ReadAll(resp.Body)
}
我成功部署了我的应用程序,但是,上面代码的结果是:
Get https://maps.googleapis.com/maps/api/directions/json?origin=&destination=&mode=&key=APIKey not an App Engine context
而不是请求的结果。这是来自浏览器的 image。我怎样才能得到想要的结果,而不仅仅是 URL?提前致谢。
我
method func main() {
http.HandleFunc("/", handler)
appengine.Main()
}