LINE 提供服務，先到 LINE Develpers 登入及註冊。

先到 https://developers.line.biz/en/ 登入

登入後，注冊，填寫 Name 、Email，並發送信箱認證信

選擇要使用的服務： Messaging API for python。

Create new channel

完成相關資料輸入 => App icon、App name、Description、Category、 Subcategory、 Email address、 Privacy Policy URL、 Terms Of Use URL

Confirm：確認輸入資料正確性

channel 建立成功

Messaging settings:

Use webhooks 切換成 Enabled
Webhook URL ：先留空白，等建立 Webhook URL 後，再回頭設定

這邊不用設定，最下面有 chatbot 的 QR code ，用於加入用戶進行對話。

佈署到 heroku

在專案資料夾新增名稱為 Procfile 的檔案

web: node app.js

如果電腦有安裝 heroku CLI，則可以於專案資料夾路徑執行下面指令：

heroku login
會與連結到 heroku 網站，點選 log in 再回到 CLI，已登入 heroku

建立一個 heroku app

heroku create
成功建立，左邊是 app 網址，右邊是 git push 位址

可用 git remote -v 指令來查詢
將專案 push heroku master

git push heroku master
push 後，會偵測哪一種語言撰寫的 app、建置 runtime environment、Installing binaries、Installing dependencies(相關套件)

from __future__ import unicode_literalsimport os import sys import redisfrom argparse import ArgumentParserfrom flask import Flask, request, abort from linebot import (LineBotApi, WebhookParser ) from linebot.exceptions import (InvalidSignatureError )from linebot.models import (MessageEvent, TextMessage, TextSendMessage, ImageMessage, VideoMessage, FileMessage, StickerMessage, StickerSendMessage, LocationMessage ) from linebot.utils import PY3app = Flask(__name__)# get channel_secret and channel_access_token from your environment variable channel_secret = os.getenv('LINE_CHANNEL_SECRET', None) channel_access_token = os.getenv('LINE_CHANNEL_ACCESS_TOKEN', None)# obtain the port that heroku assigned to this app. heroku_port = os.getenv('PORT', None)if channel_secret is None:print('Specify LINE_CHANNEL_SECRET as environment variable.')sys.exit(1) if channel_access_token is None:print('Specify LINE_CHANNEL_ACCESS_TOKEN as environment variable.')sys.exit(1)line_bot_api = LineBotApi(channel_access_token) parser = WebhookParser(channel_secret)@app.route("/callback", methods=['POST']) def callback():signature = request.headers['X-Line-Signature']# get request body as textbody = request.get_data(as_text=True)app.logger.info("Request body: " + body)# parse webhook bodytry:events = parser.parse(body, signature)except InvalidSignatureError:abort(400)# if event is MessageEvent and message is TextMessage, then echo textfor event in events:if not isinstance(event, MessageEvent):continueif isinstance(event.message, TextMessage):handle_TextMessage(event)if isinstance(event.message, ImageMessage):handle_ImageMessage(event)if isinstance(event.message, LocationMessage):handle_LocationMessage(event)if isinstance(event.message, VideoMessage):handle_VideoMessage(event)if isinstance(event.message, FileMessage):handle_FileMessage(event)if isinstance(event.message, StickerMessage):handle_StickerMessage(event)if not isinstance(event, MessageEvent):continueif not isinstance(event.message, TextMessage):continuereturn 'OK'# Handler function for Text Message def handle_TextMessage(event):print(event.message.text)msg = 'Do you want to know the latest news about the disease?'line_bot_api.reply_message(event.reply_token,TextSendMessage(msg))# Handler function for Sticker Message def handle_StickerMessage(event):print(event.message.sticker_id)msg = 'That is an interesting Sticker.'line_bot_api.reply_message(event.reply_token,TextSendMessage(msg))# Handler function for Image Message def handle_ImageMessage(event):line_bot_api.reply_message(event.reply_token,TextSendMessage(text="This photo has been stored successfully"))# Handler function for Location Message def handle_LocationMessage(event):line_bot_api.reply_message(event.reply_token,TextSendMessage(text="I am sure your community does not have infected person."))# Handler function for Video Message def handle_VideoMessage(event):line_bot_api.reply_message(event.reply_token,TextSendMessage(text="Nice video!"))# Handler function for File Message def handle_FileMessage(event):line_bot_api.reply_message(event.reply_token,TextSendMessage(text="Nice file!"))if __name__ == "__main__":arg_parser = ArgumentParser(usage='Usage: python ' + __file__ + ' [--port <port>] [--help]')arg_parser.add_argument('-d', '--debug', default=False, help='debug')options = arg_parser.parse_args()app.run(host='0.0.0.0', debug=options.debug, port=heroku_port)

具體完整項目請訪問我的github：wcc8090

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