🐛 fix: 修复 gewechat 部分场景下下载图片报错 #700

astrbot/core/platform/sources/gewechat/client.py

@@ -186,12 +186,17 @@ class SimpleGewechatClient:
                 abm.message_str = content
             case 3:
                 # 图片消息
-                file_url = await self.multimedia_downloader.download_image(
-                    self.appid, content
-                )
-                logger.debug(f"下载图片: {file_url}")
-                file_path = await download_image_by_url(file_url)
-                abm.message.append(Image(file=file_path, url=file_path))
+                # 先看看 base64 数据
+                if "ImgBuf" in d and "buffer" in d["ImgBuf"]:
+                    logger.debug("发现图片消息包含 base64 数据，使用。")
+                    abm.message.append(Image.fromBase64(d["ImgBuf"]["buffer"]))
+                else:
+                    file_url = await self.multimedia_downloader.download_image(
+                        self.appid, content
+                    )
+                    logger.debug(f"下载图片: {file_url}")
+                    file_path = await download_image_by_url(file_url)
+                    abm.message.append(Image(file=file_path, url=file_path))
 
             case 34:
                 # 语音消息