LINE Messaging APIを触ってみた

LINE Messaging APIを触ってみました。ということで備忘録。

設定とAPIに必要なパラメータの取得

設定画面へはトップ画面でログインして、事業者を選択します。

あとは対象のアカウントを選択して各設定画面に移動します。

LINE@MANAGERのBot設定でWebhook設定を有効化する

LINE DevelopersのBasic InformationでWebhook URLを設定し、Channel SecretとChannel Access Tokenを取得。

Webhookのリクエスト例

フォロー時

Accept: */*
Connection: close
Content-Length: 174
Content-Type: application/json;charset=UTF-8
Host:
User-Agent: LineBotWebhook/1.0
X-Line-Signature: {Signature}

{
    "events": [
        {
            "type": "follow",
            "replyToken": "{ReplyToken}",
            "source": {
                "userId": "{UserId}",
                "type": "user"
            },
            "timestamp": 1478677328858
        }
    ]
}

メッセージ受信時

Accept: */*
Connection: close
Content-Length: 241
Content-Type: application/json;charset=UTF-8
Host:
User-Agent: LineBotWebhook/1.0
X-Line-Signature: {Signature}

{
    "events": [
        {
            "type": "message",
            "replyToken": "{ReplyToken}",
            "source": {
                "userId": "{UserId}",
                "type": "user"
            },
            "timestamp": 1478678945668,
            "message": {
                "type": "text",
                "id": "5179620358183",
                "text": "ほげー"
            }
        }
    ]
}

Signatureを手元で確認したい場合は、以下のコマンドで確認可能です。

$ echo -n '{MessageBody}' | 
openssl dgst -sha256 -hmac "{ChannelSecret}" -binary | base64

APIを叩く

Reply Message

$ curl -X POST \
-H 'Content-Type:application/json' \
-H 'Authorization: Bearer {AccessToken}' \
-d '{
    "replyToken":"{ReplyToken}",
    "messages":[
        {
            "type":"text",
            "text":"Hoge"
        },
        {
            "type":"text",
            "text":"Fuga?"
        }
    ]
}' https://api.line.me/v2/bot/message/reply

Push Message

$ curl -X POST \
-H 'Content-Type:application/json' \
-H 'Authorization: Bearer {AccessToken}' \
-d '{
    "to": "{UserId}",
    "messages":[
        {
            "type":"text",
            "text":"Hello, world1"
        },
        {
            "type":"text",
            "text":"Hello, world2"
        }
    ]
}' https://api.line.me/v2/bot/message/push

Get Profile

$ curl -X GET \
-H 'Authorization: Bearer {AccessToken}' \
https://api.line.me/v2/bot/profile/{UserId}

参考URL

API Reference