Merge pull request '监听更广泛的 Discord 消息' (#38) from bugfix/discord-image-download into master

Reviewed-on: #38

konabot/common/nb/extract_image.py

@@ -8,7 +8,7 @@ import nonebot
 from nonebot.matcher import Matcher
 from nonebot.adapters import Bot, Event, Message
 from nonebot.adapters.discord import Bot as DiscordBot
-from nonebot.adapters.discord import GuildMessageCreateEvent as DiscordMessageEvent
+from nonebot.adapters.discord import MessageEvent as DiscordMessageEvent
 from nonebot.adapters.onebot.v11 import Bot as OnebotV11Bot
 from nonebot.adapters.onebot.v11 import Message as OnebotV11Message
 from nonebot.adapters.onebot.v11 import MessageEvent as OnebotV11MessageEvent
@@ -127,7 +127,7 @@ async def extract_image_from_message(
         for a in evt.attachments:
             if "image/" not in a.content_type:
                 continue
-            url = a.url
+            url = a.proxy_url
             return (await download_image_bytes(url)).bind(bytes_to_pil)
 
     for seg in UniMessage.of(msg, bot):