JDA Discord 向消息添加反应

Question

当我尝试对机器人发送的消息添加反应时遇到问题。这是我的代码以及我尝试添加反应时遇到的问题。

这个想法很简单。只是一个由机器人发送的投票命令+添加对它的反应，例如竖起大拇指和向下拇指：

“$poll This Is Example Poll”并在创建此投票后，添加反应

代码 -

    @Override
    protected void execute(CommandEvent event) {
        if (this.check(event)) {
            return;
        }

        var args = event.getArgs().trim();
        if (args.isEmpty()) {
            this.incorrectUsage(event);
            return;
        }

        var announcementFormat = this.getConfig().getMessages().get("pool-format")
                .replaceAll("%message", args);


        event.reply(announcementFormat);
        event.getMessage().addReaction("✔").queue();
    }

错误-

ERROR net.dv8tion.jda.api.requests.RestAction - RestAction queue returned failure: [ErrorResponseException] 10008: Unknown Message
net.dv8tion.jda.api.exceptions.ContextException
        at net.dv8tion.jda.api.exceptions.ContextException.here(ContextException.java:54)
        at net.dv8tion.jda.api.requests.Request.<init>(Request.java:71)
        at net.dv8tion.jda.internal.requests.RestActionImpl.queue(RestActionImpl.java:197)
        at net.dv8tion.jda.api.requests.RestAction.queue(RestAction.java:563)
        at net.dv8tion.jda.api.requests.RestAction.queue(RestAction.java:529)
        at cf.lionsquad.lionminus.command.impl.PollCommand.execute(PollCommand.java:48)
        at com.jagrosh.jdautilities.command.Command.run(Command.java:323)
        at com.jagrosh.jdautilities.command.impl.CommandClientImpl.onMessageReceived(CommandClientImpl.java:557)
        at com.jagrosh.jdautilities.command.impl.CommandClientImpl.onEvent(CommandClientImpl.java:445)
        at net.dv8tion.jda.api.hooks.InterfacedEventManager.handle(InterfacedEventManager.java:96)
        at net.dv8tion.jda.internal.hooks.EventManagerProxy.handleInternally(EventManagerProxy.java:82)
        at net.dv8tion.jda.internal.hooks.EventManagerProxy.handle(EventManagerProxy.java:69)
        at net.dv8tion.jda.internal.JDAImpl.handleEvent(JDAImpl.java:150)
        at net.dv8tion.jda.internal.handle.MessageCreateHandler.handleInternally(MessageCreateHandler.java:122)
        at net.dv8tion.jda.internal.handle.SocketHandler.handle(SocketHandler.java:36)
        at net.dv8tion.jda.internal.requests.WebSocketClient.onDispatch(WebSocketClient.java:948)
        at net.dv8tion.jda.internal.requests.WebSocketClient.onEvent(WebSocketClient.java:835)
        at net.dv8tion.jda.internal.requests.WebSocketClient.handleEvent(WebSocketClient.java:813)
        at net.dv8tion.jda.internal.requests.WebSocketClient.onBinaryMessage(WebSocketClient.java:986)
        at com.neovisionaries.ws.client.ListenerManager.callOnBinaryMessage(ListenerManager.java:385)
        at com.neovisionaries.ws.client.ReadingThread.callOnBinaryMessage(ReadingThread.java:276)
        at com.neovisionaries.ws.client.ReadingThread.handleBinaryFrame(ReadingThread.java:996)
        at com.neovisionaries.ws.client.ReadingThread.handleFrame(ReadingThread.java:755)
        at com.neovisionaries.ws.client.ReadingThread.main(ReadingThread.java:108)
        at com.neovisionaries.ws.client.ReadingThread.runMain(ReadingThread.java:64)
        at com.neovisionaries.ws.client.WebSocketThread.run(WebSocketThread.java:45)

Answer 1

你可以使用flatMap:

event.getChannel().sendMessage(announcementFormat)
     .flatMap(message -> message.addReaction("✔"))
     .queue();

而不是event.reply(announcementFormat)。

您的代码当前尝试对用户发送的消息而不是您的机器人发送的消息添加反应。但是，该消息此时已被删除，这就是您收到 Unknown Message 错误的原因。