Question

Discord.net：为什么我的 discord 命令根本无法被识别？

2020-11-27

2654

c# command discord.net

我正在 discord.net 中编写 discord 机器人，但在命令运行方面遇到了麻烦，我的错误处理程序发现这是一个未知命令。有什么想法吗？

这些是我的脚本：

命令处理程序：

using System;
using System.Collections.Generic;
using System.Text;
using Discord.Commands;
using Discord.WebSocket;
using Microsoft.Extensions.Configuration;
using System.Threading.Tasks;
using Discord;
using System.Reflection;

namespace fucking_kill_me.Services
{

    public class CommandHandler
    {
        public static IServiceProvider _provider;
        public static DiscordSocketClient _discord;
        public static CommandService _commands;
        public static IConfigurationRoot _config;

        public CommandHandler(DiscordSocketClient discord, CommandService commands, IConfigurationRoot config, IServiceProvider provider)
        {
            _provider = provider;
            _config = config;
            _discord = discord;
            _commands = commands;

            _discord.Ready += OnReady;
            _discord.MessageReceived += OnMessageReceived;
        }

        private async Task OnMessageReceived(SocketMessage arg)
        {
            var msg = arg as SocketUserMessage;

            if (msg.Author.IsBot) return;
            var context = new SocketCommandContext(_discord, msg);

            int pos = 0;
            if(msg.HasStringPrefix(_config["prefix"], ref pos) || msg.HasMentionPrefix(_discord.CurrentUser, ref pos))
            {
                var result = await _commands.ExecuteAsync(context, pos, _provider);

                if (!result.IsSuccess)
                {
                    var reason = result.Error;

                    await context.Channel.SendMessageAsync($"The following error occured: \n{reason}");
                    Console.WriteLine(reason);
                }
            }
        }

        private Task OnReady()
        {
            Console.WriteLine($"Logged into {_discord.CurrentUser.Username}#{_discord.CurrentUser.Discriminator}");
            return Task.CompletedTask;
        }
    }
}

命令：

using Discord.Commands;
using System;
using System.Collections.Generic;
using System.Text;
using System.Threading.Tasks;

namespace fucking_kill_me.Modules
{
    class GeneralCommands : ModuleBase
    {
        [Command("ping")]
        public async Task Ping()
        {
            await Context.Channel.SendMessageAsync("PongBama");
        }

    }
}

如能得到帮助，我们将不胜感激，谢谢！

PS：如果您需要更多文件，请告诉我。我使用这个视频作为参考， https://www.youtube.com/watch?v=uOV1rg_ecMo&t=6s

Answer 1

模块类需要公开，以便 Discord.NET 能够拾取它们。

尝试将 class GeneralCommands : ModuleBase 更改为 public class GeneralCommands : ModuleBase

Answer 2

我尝试将您的代码与我的代码进行比较，我注意到您的代码中缺少 _commands.AddModulesAsync 。

因此，在我的代码中，我将 GeneralCommands 添加到服务集合中，并将其添加到 _commands.AddModulesAsync 。

它看起来像这样

private readonly ServiceProvider _serviceProvider = ServiceProviderUtilities.ConfigureServices();

public async Task MainAsync{
     ...
     await _commandService.AddModulesAsync(Assembly.GetEntryAssembly(), _serviceProvider);
      ...
      _client.MessageReceived += MessageReceivedAsync;
     ...
}

public class ServiceProviderUtilities
    {
        public static ServiceProvider ConfigureServices()
        {
            return new ServiceCollection()
                .AddSingleton<GeneralCommands>()
                .BuildServiceProvider();
        }
    }