分類: 生活雜感

程式下載: https://drive.google.com/file/d/1rmz910QWqQxLa8XOMWrFG1fjSTPoTLFd/view?usp=sharing
本篇學會
– LOG的撰寫以及追蹤
– ngrok 讓本機可以debug webhook
– JSON 的基本運用
– LINE BOT初步瞭解(回應訊息)


準備篇

– Visual Studio 

– ngrok(localhost 對應到https public domain的服務)

下載連結:
https://ngrok.com/download

– LINE Developers 帳號(免費)

https://developers.line.biz/en/ “https://developers.line.biz/en/

開發步驟

–  新增asp.net Core web應用程式後按下一步


–  設定專案名稱LINEBOT，建立



–  選擇.NET Core → ASP.NET Core 3.1 →API→建立



–  首先安裝 *serilog.extensions.logging*



–  在Startup.cs加上  ILoggerFactory ，並設定檔名



–  在預設的WeatherForecastController.cs試著加上LOG



–  開啟程式後，到logs目錄下確定LOG正常



–  新增API控制器


–  修改route為 api/linebot ，程式如下

           // 記得using Microsoft.Extensions.Logging;
        readonly ILogger<LINEBOTController> _log;

        public LINEBOTController(ILogger<LINEBOTController> log)
        {
            _log = log;
        }
        [HttpPost]
        public async Task<IActionResult> Post(dynamic request
        {
            string x = Convert.ToString(request);
            _log.LogInformation(x);             
            return Ok(request);
        }



– 執行程式後，打開IIS Express，確認PORT號



– 打開命令提示字元，切換到ngrok目錄下



– 執行命令(記得Port號改成自己對應)
`!ngrok http 33766 -host-header=”localhost:33766″`



– 執行後，會取到一個https開頭網址，記下來後(不要關閉視窗)



– 進到LINE Developer網址，新增Provi![]

– 新增一個 Messaging API的Channel



– 設定名稱與描述、目錄、子目錄後勾選允許相關條款後按Create

– 最後同意使用資訊



– 建立完成後進到MessagingAPI頁籤



– 修改以下內容



– 允許加入群組或多人聊天室



– 停用加入好友訊息以及自動回應訊息，啟用webhook功能





– 加webhook URL輸入



– 輸入確定後按Verify

– 出現 307 Temporary Redirect



– Startup.cs中的 app.UseHttpsRedirection() 註解，重新開啟程式



– 重新驗證後成功！



– 從LOG看到LINE傳來的驗證訊息



## 回聲蟲

– 從開發者網站中的Messaging API得知如何做[回應reply](https://developers.line.biz/en/docs/messaging-api/sending-messages/#reply-messages)



– 安裝 NewtonSoft.Json



– 到LINE DEVELOPER中取得TOKEN複製



– 加上程式如下
–
    public class LineReceivedMessage
    {
        public List<Event> events;
        public LineReceivedMessage()
        {
          events = new List<Event>();
        }
    }
    public class Event
    {
            public string type { get; set; }
           public Source source { get; set; }
         public EventMessage message { get; set; }
         public string replyToken { get; set; }
         public Event()
         {
           source = new Source();
           message = new EventMessage();
         }
    }
    public class Source
    {
         public string userId { get; set; }
    }
    public class EventMessage
    {
        public string id { get; set; }
        public string type { get; set; }
        public string text { get; set; }
    }


– 修改POST函數如下

        public async Task<IActionResult> Post(dynamic request)
        {
            string x = Convert.ToString(request);
            _log.LogInformation(x);               
            var channelAccessToken = “你的TOKEN”;
            var receivedMessage = JsonConvert.DeserializeObject<LineReceivedMessage>(x); // 收到訊息解成物件
            string userid = receivedMessage.events[0].source.userId;  // 取得使用者ID
            string message = receivedMessage.events[0].message.text;  // 取得文字訊息
            var replyToken = receivedMessage.events[0].replyToken;  // 取得回應TOKEN
            var replyMessage = new
            {
                replyToken = replyToken,
                messages = new object[] { new {
                    type = “text”,
                    text = message
                }
                }
            };
            string s = JsonConvert.SerializeObject(replyMessage);  // 轉為JSON字串
            byte[] bytes = Encoding.UTF8.GetBytes(s);
            WebClient webClient = new WebClient();
            webClient.Headers.Clear();
            webClient.Headers.Add(“Content-Type”, “application/json”);
            webClient.Headers.Add(“Authorization”, “Bearer ” + channelAccessToken);
            webClient.UploadData(“https://api.line.me/v2/bot/message/reply”, bytes);
            return Ok(request);
        }


– 結果

##參考資料:

LINE DEVELOPER API文件

[https://developers.line.biz/zh-hant/docs/messaging-api/](https://developers.line.biz/zh-hant/docs/messaging-api/ “https://developers.line.biz/zh-hant/docs/messaging-api/”)

SSL Server Authentication 事件中

Accept := True;

System.Timer 宣告後，如果要處理Form上的元件

會出現需要invoke才能設定的問題。原因是因為UI執行緒與timer不同

網路上一堆解法，結果最單純的是System.Forms.Timer 宣告

timer與UI thread相同了

2020/9/30在embarcadero youtube頻道中發佈了一則Python4Delphi

Python4Delphi 主要作用可以透過Delphi運用 Python的library有：

• TensorFlow –機器學習
  • Google 跟 Brain Team一起開發適用於大部份machine learning器學習
• Numpy 
  • 。
• 熊貓
•  
• Scikit-Learn
• NLTK
• SciPy
• Matplotlib ＆ Seaborn 
• Pillow ＆ MoviePy

RAD Studio 10.4 Sydney Release 1 發佈了！

然後就是把10.4一些原生的問題修正了

版本說明

http://docwiki.embarcadero.com/RADStudio/Sydney/en/10.4_Sydney_-_Release_1

修正

http://docwiki.embarcadero.com/RADStudio/Sydney/en/New_features_and_customer_reported_issues_fixed_in_RAD_Studio_10.4.1

最近忙著拍攝一些PHP與LARAVEL以及DELPHI的教程
已經好一段時間沒有好好更新了


var client = new WebClient();
var method = "POST";
var parameters = new NameValueCollection
{
{ "NAME", "林壽山" },
};
var response_data = client.UploadValues("$$API網址$$", method, parameters);
var responseString = UnicodeEncoding.UTF8.GetString(response_data);


如果回傳是JSON

dynamic json = JToken.Parse(responseString) as dynamic;