无法执行命令

Question

我为我的不和谐机器人编写了一个简单的模块。

机器人：

_client = new DiscordSocketClient();

_commandService = new CommandService();

_serviceProvider = new ServiceCollection()

     .AddSingleton(_client)

     .AddSingleton(_commandService)

     .BuildServiceProvider();

模块：

public class MyModule: ModuleBase<ICommandContext>

{

    private readonly MyService _service;

    public MyModule(MyService service)

    {

        _service = service;

    }

    [Command("DoStuff", RunMode = RunMode.Async)]

    public async Task DoStuffCmd()

    {

        await _service.DoStuff(Context.Guild, (Context.User as IVoiceState).VoiceChannel);

    }

}

模块添加如下：

await _commandService.AddModulesAsync(Assembly.GetEntryAssembly());

添加模块显式将导致该模块已经添加的异常，所以我假设它有效。

我像这样处理命令。

// Create a number to track where the prefix ends and the command begins

int argPos = 0;

// Determine if the message is a command, based on if it starts with '!' or a mention prefix

if (!(message.HasCharPrefix('!', ref argPos) || message.HasMentionPrefix(_client.CurrentUser, ref argPos))) return;

// Create a Command Context

var context = new CommandContext(_client, message);

// Execute the command. (result does not indicate a return value, 

// rather an object stating if the command executed successfully)

var result = await _commandService.ExecuteAsync(context, argPos, _serviceProvider);

该result变量总是返回Success，但DoStuffCmd在方法MyModule不会被调用。

我在这里缺少什么？

Answer 1

你似乎没有注入MyService到你的ServiceCollection。如果不注入服务，则永远无法创建模块，因为您将其定义为依赖项private readonly MyService _service;public MyModule(MyService service){&nbsp; &nbsp; _service = service;}要解决此问题，您可以将您MyService的添加到ServiceCollection.为此，最好创建一个IMyService（接口）并将其添加到您的注射中_serviceProvider = new ServiceCollection()&nbsp;.AddSingleton(_client)&nbsp;.AddSingleton(_commandService)&nbsp;.AddSingleton<IMyService, MyService>()&nbsp;.BuildServiceProvider();