将嵌入转发到另一个频道时出现 discord.py 错误

Question

我有一个关于 discord.py 的问题。我有一个将嵌入消息转发到另一个不和谐频道的代码，但它给了我一个错误。我该如何解决？

错误：

Ignoring exception in on_message
Traceback (most recent call last):
  File "C:\Users\USER\AppData\Roaming\Python\Python310\site-packages\discord\client.py", line 301, in _run_event
    await coro(*args, **kwargs)
  File "C:\Users\USER\Desktop\newBodyguard\d2d.py", line 27, in on_message
    await channeltosend.send(message.content, embed=message.embeds[0])
  File "C:\Users\USER\AppData\Roaming\Python\Python310\site-packages\discord\abc.py", line 1061, in send
    data = await state.http.send_message(channel.id, content, tts=tts, embed=embed,
  File "C:\Users\USER\AppData\Roaming\Python\Python310\site-packages\discord\http.py", line 302, in request
    raise HTTPException(r, data)
discord.errors.HTTPException: 400 Bad Request (error code: 50006): Cannot send an empty message

import discord
from discord import channel

USER_DISCORD_TOKEN = 'u3VulQw33THPGbPlx_aUHC.............'
channel1id = 12844415 #source channel 
channel2id = 71038106 #target channel

async def on_ready():
    print("Copier is ready")

class MyClient(discord.Client):
   
        
    async def on_ready(self):
        print('Logged on as', self.user)
    
    async def on_message(self, message):
        try:
            serverName = message.guild.name
            channelId = message.channel.id
            channelName = message.channel.name
        except AttributeError:
            pass
        print(f"Server: {serverName}, Channel: {channelName}")
        if message.channel.id == channel1id:
            channeltosend = client.get_channel(channel2id)
            await channeltosend.send(message.content, embed=message.embeds[0])
            print(message)
            print('****************')
            print(message.embeds)
       
               
client = MyClient()
client.run(USER_DISCORD_TOKEN)

编辑：我添加了两行但仍然是相同的错误（discord.errors.HTTPException：400 Bad Request（错误代码：50006）：无法发送空消息）。任何人都可以分享完整的代码。我错了吗？

import discord
from discord import channel

USER_DISCORD_TOKEN = 'TOKEN HERE'
channel1id = 823473 #source
channel2id = 910981 #dest

async def on_ready():
    print("Bot is ready")

class MyClient(discord.Client):
   
        
    async def on_ready(self):
        print('Logged on as', self.user)
    
    async def on_message(self, message):
    try:
        serverName = message.guild.name
        channelId = message.channel.id
        channelName = message.channel.name
        print(f"Server: {serverName}, Channel: {channelName}")
        if message.channel.id == channel1id:
            channeltosend = client.get_channel(channel2id)
            await channeltosend.send(message.content, embed=message.embeds[0])
            print(message)
            print('****************')
            print(message.embeds)
    except AttributeError:
        pass
    print(f"Server: {serverName}, Channel: {channelName}")
       
               
client = MyClient()
client.run(USER_DISCORD_TOKEN)

编辑 1：发送的消息是“@deleted 角色”

async def on_ready(): print("机器人准备好了")

类 MyClient(discord.Client)：

async def on_ready(self):
    print('Logged on as', self.user)

async def on_message(self, message):
    try:
        serverName = message.guild.name
        channelId = message.channel.id
        channelName = message.channel.name
        print(f"Server: {serverName}, Channel: {channelName}")
        if message.channel.id == channel1id:
            channeltosend = client.get_channel(channel2id)
            await channeltosend.send(message.content, embed=message.embeds[0])
            print(message)
            print('****************')
            print(message.embeds)
    except discord.errors.HTTPException:
        pass
    print(f"Server: {serverName}, Channel: {channelName}")
   
           

客户 = 我的客户（） client.run(USER_DISCORD_TOKEN)

Answer 1

“无法发送空消息”错误的发生是因为机器人试图发送一条内容为空且没有嵌入的消息（可能是因为源频道中有一条消息两者都没有，例如一条只有图像的消息 -那些去message.attachments，而不是message.content）

---

解决此问题的最简单方法是简单地 try: ... except 调用您的 await channeltosend.send(message.content, embed=message.embeds[0]) 并忽略/记录错误，但您可能仍希望将任何附件复制到目标频道，因此也许您应该检查附件并而是将它们复制过来。您可以通过在附件上使用to_file() 来实现这一点，然后将其提交到channeltosend.send 的file 参数（或files 和附件列表，如果有多个）类似：

files = [await attachment.to_file() for attachment in message.attachments]
...
await channeltosend.send(message.content, embed=message.embeds[0], files=files)

Answer 2

你检查过变量message.embeds[0] 的值是多少吗？如果message.embeds[0] 是None (NoneType)，那么很可能是您的问题背后的原因。请注意以下几点：

1. 如果您要发送嵌入，则无需发送消息
2. 当您发送嵌入时，您至少需要一个标题或描述。这是绝对最小值。

尝试查看message.embeds[0] 的值。另外，在为您进行测试时，我注意到了一些事情。

可以看到第一个对象来自await channel.send(embed=embed)，而第二个对象来自await channel.send(message.embeds[0])。您是否尝试过手动将 discord.Embed 对象的参数添加到另一个嵌入？喜欢：

await channel.send(
    embed = discord.Embed(
        title = message.embeds[0].title,
        description = message.embeds[0].description,
        # etc.
    )
)