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Facebook の Graph API で自分についての情報を得る (go)

Last updated at Posted at 2018-02-22

次のプログラムを go で書いてみました。
Facebook の Graph API で自分についての情報を得る

次のライブラリーを使います。
A Facebook Graph API SDK For Go.

ライブラリーをクローンします。

git clone https://github.com/huandu/facebook.git
get_me.go
// ---------------------------------------------------------------
//
//  get_me.go
//
//                  Feb/22/2018
// ---------------------------------------------------------------
package main

import (
    "fmt"
    fb "../facebook"
)

// ---------------------------------------------------------------
func main() {
    res, _ := fb.Get("/341584679598802", fb.Params{
        "fields": "id,name,last_name,first_name,gender,name_format,timezone",
        "access_token": "FG4EFFBgb938BAO2ouOc1235pjXC8YgsXZBYRnZB8nNvwZCP7dJDTXq7pRrZCVXDX4rmH9hvEZCUj8ZA2ihBlMKMoVWWwzaaRzI8tqA6zCAhgZB12idZCYxIxXNmC112GypCJlnsGdUgLLwAYp0PAQinfL3J123f6or2JYj65bt0QSp1umNabcfg",
    })

    fmt.Println("id:", res["id"])
    fmt.Println("name:", res["name"])
    fmt.Println("last_name:", res["last_name"])
    fmt.Println("first_name:", res["first_name"])
    fmt.Println("gender:", res["gender"])
    fmt.Println("name_format:", res["name_format"])
    fmt.Println("timezone:", res["timezone"])
}

// ---------------------------------------------------------------
Makefile
get_me: get_me.go
    go build get_me.go
clean:
    rm -f get_me

ファイルの配置です。

├── facebook
└── get_me
    ├── get_me.go
    └── Makefile

facebook のライブラリーを使わない方法

get_me_http.go
// ---------------------------------------------------------------
//
//  get_me_http.go
//
//                  Feb/22/2018
// ---------------------------------------------------------------
package main

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

// ---------------------------------------------------------------
func main() {
    access_token := "FG4EFFBgb938BAO2ouOc1235pjXC8YgsXZBYRnZB8nNvwZCP7dJDTXq7pRrZCVXDX4rmH9hvEZCUj8ZA2ihBlMKMoVWWwzaaRzI8tqA6zCAhgZB12idZCYxIxXNmC112GypCJlnsGdUgLLwAYp0PAQinfL3J123f6or2JYj65bt0QSp1umNabcfg"

    fields := "id,name,last_name,first_name,gender,name_format,timezone"

    url := "https://graph.facebook.com/v2.12/me" + "?access_token=" + access_token + "&fields=" + fields

    resp, err := http.Get (url)

    if err != nil {
        log.Fatalln(err)
        fmt.Printf("%s", err)
        os.Exit(1) 
        } else {
            defer resp.Body.Close()
            contents, err := ioutil.ReadAll(resp.Body)
            if err != nil {
                fmt.Printf("%s", err)
                os.Exit(1)
                }
            json_str := string(contents)
            fmt.Printf("%s\n", json_str)
            var data map[string]interface{}
            if err := json.Unmarshal([]byte(json_str), &data); err != nil {
                     panic(err)
                }

        }

}

// ---------------------------------------------------------------
Makefile
get_me_http: get_me_http.go
    go build get_me_http.go
clean:
    rm -f get_me_http

実行方法

./get_me_http | jq .
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