如何使用飞书自定义机器人通知消息

大家有没有这样的需求，就是正在执行某个任务的时候希望任务完成之后给个通知，或者是软件运行报错的时候每天定期收集错误日志。

平时我们工作用的飞书，所有现在用飞书机器人把消息通知出来,非常简单好用的消息通知。

类似这样的消息通知还有企业微信也有。

飞书拉群的时候添加自定义机器
拿到飞书机器人的webhook ，根据飞书文档自定义机器人使用指南 - 开发指南 - 开发文档 - 飞书开放平台

C#实现如下，这个webhook真实可用，大家可以拿了玩玩，消息会发到我这里

private static readonly HttpClient client = new HttpClient();
 private static async Task SendMassageFeishu(string content)
 {
     //自定义机器人webhook地址
     string webhookUrl = "https://open.feishu.cn/open-apis/bot/v2/hook/475b444e-d0e4-4b69-9cba-e2382a69bea8";
     var message = new
     {
         msg_type = "text",
         content = new
         {
             text = content
         }
     };
     var json = JsonConvert.SerializeObject(message);
     var data = new StringContent(json, Encoding.UTF8, "application/json");

     var response = await client.PostAsync(webhookUrl, data);
     var result = await response.Content.ReadAsStringAsync();
 }

效果这样

3. 发送通过自定义机器人发送图片，需要先创建应用，并且开通图片上传权限

    1. 发送图片
需要先创建应用，开通图片文件上传的权限。
获取开通应用的appId和appSecret，获取Token
   public async Task<string> GetTokenAsync()
   {
       string appId = @"cli_a7a4cdbd480b";
       string appSecret = "qDIqT7EIr98cV8Q3ofKqRSnQqDjA";
       using var client = new HttpClient();
       var requestBody = new
       {
           app_id = appId,
           app_secret = appSecret
       };

       var content = new StringContent(JsonConvert.SerializeObject(requestBody), Encoding.UTF8,
           "application/json");

       var response =
           await client.PostAsync("https://open.feishu.cn/open-apis/auth/v3/tenant_access_token/internal/",
               content);
       string responseContent = await response.Content.ReadAsStringAsync();

       if (response.IsSuccessStatusCode)
       {
           var jsonResponse = JObject.Parse(responseContent);
           string tenantAccessToken = jsonResponse["tenant_access_token"].ToString();
           return tenantAccessToken;
       }

       return "";

   }

拿到Token之后调用上传图片的方法，拿到图片的image_key
 private static async Task<string> UploadImage(string accessToken, string imagePath)
 {
     using HttpClient client = new HttpClient();
     client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", accessToken);

     using var formData = new MultipartFormDataContent();
     using var fileStream = File.OpenRead(imagePath);
     var fileContent = new StreamContent(fileStream);
     var mimeType = GetMimeType(imagePath);
     fileContent.Headers.ContentType = new MediaTypeHeaderValue(mimeType);

     formData.Add(fileContent, "image", Path.GetFileName(imagePath));
     formData.Add(new StringContent("message"), "image_type"); // 使用"message"作为默认image_type

     var response = await client.PostAsync("https://open.feishu.cn/open-apis/image/v4/put/", formData);
     string responseBody = await response.Content.ReadAsStringAsync();

     if (response.IsSuccessStatusCode)
     {
         var jsonResponse = JObject.Parse(responseBody);
         var imageKey = jsonResponse["data"]["image_key"]?.ToString();
           
         return imageKey;
     }
     else
     {
                
     }

     return null;
 }

拿到Image_key之后就可以，通过自定义机器人的Webhook地址发送图片
  public async Task<bool> SendImageFeishuAsync(string imagePath)
  {
      var token = await GetTokenAsync();
      var imageKey = await UploadImage(token, imagePath);
      // 替换为你自己的飞书机器人Webhook地址
      string webhookUrl = "https://open.feishu.cn/open-apis/bot/v2/hook/05546c09-f7e7-466c-8660-18aa";
      // 将图片转换为Base64编码字符串

      var message = new
      {
          msg_type = "image",
          content = new
          {
              image_key = imageKey
          }
      };
      var json = JsonConvert.SerializeObject(message);
      var data = new StringContent(json, Encoding.UTF8, "application/json");

      var response = await client.PostAsync(webhookUrl, data);
      var result = await response.Content.ReadAsStringAsync();
      return response.IsSuccessStatusCode;
  }