GolangでTwitter OAuthを使うサンプル

go-twitter

package main

import (
  "fmt"
  "log"
  "io/ioutil"
  "encoding/json"
  "github.com/mrjones/oauth"
)

type Twitter struct {
  consumer *oauth.Consumer
  accessToken *oauth.AccessToken
}

func NewTwitter(consumerKey, consumerSecret, accessToken, accessTokenSecret string) (*Twitter) {
  twitter := new(Twitter)
  twitter.consumer = oauth.NewConsumer(
    consumerKey,
    consumerSecret,
  	oauth.ServiceProvider{
	  RequestTokenUrl:   "http://api.twitter.com/oauth/request_token",
	  AuthorizeTokenUrl: "https://api.twitter.com/oauth/authorize",
	  AccessTokenUrl:    "https://api.twitter.com/oauth/access_token",
	})
  twitter.accessToken = &oauth.AccessToken{accessToken, accessTokenSecret}
  return twitter
}

func (t *Twitter) Get(url string, params map[string]string) (interface{}, error) {
  response, err := t.consumer.Get(url, params, t.accessToken)
  if err != nil {
    return nil, err
  }
  defer response.Body.Close()

  b, err := ioutil.ReadAll(response.Body)
  if err != nil {
    return nil, err
  }

  // decode
  var result interface{}
  err = json.Unmarshal(b, &result)
  return result, err
}

func (t *Twitter) Post(url string, params map[string]string) (interface{}, error) {
  response, err := t.consumer.Post(url, params, t.accessToken)
  if err != nil {
    return nil, err
  }
  defer response.Body.Close()

  b, err := ioutil.ReadAll(response.Body)
  if (err != nil) {
    return nil, err
  }

  // decode
  var result interface{}
  err = json.Unmarshal(b, &result)
  return result, err
}

func main() {
  twitter := NewTwitter("CONSUMER_KEY", "CONSUMER_SECRET", "ACCESS_TOKEN", "ACCESS_TOKEN_SECRET")

  // testとつぶやく
  res, err := twitter.Post(
    "https://api.twitter.com/1.1/statuses/update.json", // Resource URL
    map[string]string{"status": "test"}) // Parameters
  if err != nil {
    log.Fatal(err)
  }
  fmt.Println(res)

  // ホームタイムラインを取得
  res, err = twitter.Get(
    "https://api.twitter.com/1.1/statuses/home_timeline.json", // Resource URL
    map[string]string{}) // Parameters
  if err != nil {
    log.Fatal(err)
  }

  for _, val := range res.([]interface{}) {
    tweet, _ := val.(map[string]interface{})
    fmt.Println(tweet["text"])
  }
}