feat(wechat): Improve webhook message

- add a default `TemplateCardHorizontalContent`
- add README.md

aspnet-core/framework/wechat/LINGYUN.Abp.WeChat.Work/LINGYUN/Abp/WeChat/Work/Messages/Models/TemplateCardHorizontalContent.cs

@@ -67,6 +67,18 @@ public class TemplateCardHorizontalContent
         UserId = userId;
     }
     /// <summary>
+    /// 创建一个默认二级标题+文本
+    /// </summary>
+    /// <param name="keyName">二级标题</param>
+    /// <param name="value">二级文本</param>
+    /// <returns></returns>
+    public static TemplateCardHorizontalContent Default(string keyName, string value = null)
+    {
+        Check.NotNullOrWhiteSpace(keyName, nameof(keyName));
+
+        return new TemplateCardHorizontalContent(keyName, value: value);
+    }
+    /// <summary>
     /// 创建一个跳转链接的二级标题+文本
     /// </summary>
     /// <param name="keyName">二级标题</param>

aspnet-core/framework/wechat/LINGYUN.Abp.WeChat.Work/LINGYUN/Abp/WeChat/Work/Messages/README.md

@@ -0,0 +1,51 @@
+# 企业微信消息通知
+
+## 功能特性
+
+* [发送应用消息](https://developer.work.weixin.qq.com/document/path/90236)
+* [发送群聊消息](https://developer.work.weixin.qq.com/document/path/90248)
+* [发送Webhook消息](https://developer.work.weixin.qq.com/document/path/99110)
+
+
+## 使用方法
+
+- 发送Webhook消息
+```csharp
+public class Demo
+{
+	private readonly IWeChatWorkMessageSender _sender;
+	
+	public Demo(IWeChatWorkMessageSender sender)
+	{
+		_sender = sender;
+	}
+
+	public async Task Send()
+	{
+		await _sender.SendAsync(
+            "693a91f6-7xxx-4bc4-97a0-0ec2sifa5aaa",
+            new WeChatWorkWebhookTemplateCardMessage(
+                new WebhookTextNoticeCardMessage(
+                    TemplateCardAction.Link("https://developer.work.weixin.qq.com/document/path/99110"),
+                    new TemplateCardMainTitle("请假通过通知", "您的请假申请已通过,请前往查看!"),
+                    source: TemplateCardSource.Black("https://wwcdn.weixin.qq.com/node/wework/images/wecom-logo.a61830413b.svg", "企业微信"),
+                    horizontalContents: new List<TemplateCardHorizontalContent>
+                    {
+                        TemplateCardHorizontalContent.Default("审批单号", "QJ20251000000136"),
+                        TemplateCardHorizontalContent.Default("请假日期", "2025/10/01-2025/10/10"),
+                        TemplateCardHorizontalContent.Default("通过时间", "2025-10-01 15:30:00"),
+                        TemplateCardHorizontalContent.Default("审批备注", "做好考勤及交接事项"),
+                    },
+                    jumps: new List<TemplateCardJump>
+                    {
+                        TemplateCardJump.Link("去OA查看", "https://developer.work.weixin.qq.com/document/path/99110")
+                    })));
+	}
+}
+```
+
+
+## 更多文档
+
+* [企业微信文档](https://developer.work.weixin.qq.com/document/path/90664)
+

aspnet-core/framework/wechat/LINGYUN.Abp.WeChat.Work/LINGYUN/Abp/WeChat/Work/Messages/WeChatWorkMessageSender.cs

@@ -91,7 +91,6 @@ public class WeChatWorkMessageSender : IWeChatWorkMessageSender, ISingletonDepen
     // 消息发送频率限制: https://developer.work.weixin.qq.com/document/path/99110#%E6%B6%88%E6%81%AF%E5%8F%91%E9%80%81%E9%A2%91%E7%8E%87%E9%99%90%E5%88%B6
     public async virtual Task<WeChatWorkResponse> SendAsync(string webhookKey, WeChatWorkWebhookMessage message, CancellationToken cancellationToken = default)
     {
-        var token = await WeChatWorkTokenProvider.GetTokenAsync(cancellationToken);
         var client = HttpClientFactory.CreateClient(AbpWeChatWorkGlobalConsts.ApiClient);
 
         using var response = await client.SendMessageAsync(webhookKey, message, cancellationToken);

aspnet-core/framework/wechat/LINGYUN.Abp.WeChat.Work/LINGYUN/Abp/WeChat/Work/Messages/WeChatWorkWebhookMessage.cs

@@ -1,6 +1,7 @@
 using JetBrains.Annotations;
 using Newtonsoft.Json;
 using System.Text.Json.Serialization;
+using Volo.Abp;
 
 namespace LINGYUN.Abp.WeChat.Work.Messages;
 /// <summary>
@@ -17,6 +18,6 @@ public abstract class WeChatWorkWebhookMessage : WeChatWorkRequest
     public string MsgType { get; set; }
     protected WeChatWorkWebhookMessage(string msgType)
     {
-        MsgType = msgType;
+        MsgType = Check.NotNullOrWhiteSpace(msgType, nameof(msgType));
     }
 }