JDA：一旦用户被封禁，机器人就不会通知用户

Posted 2023-03-14

【中文标题】JDA：一旦用户被封禁，机器人就不会通知用户

【英文标题】：JDA: The bot does not dm the user once they have been ban

【发布时间】：2021-12-11 16:42:27

【问题描述】：

当我禁止该成员时，即使认为用户的 dm 是打开的，他们也没有在 dms 中发送消息。

代码在这里

public static void kickUser(@NotNull Member member, @NotNull Member author,
            @NotNull String reason, long userId, @NotNull SlashCommandEvent event) 
        String guildName = event.getGuild().getName();
        event.getJDA()
            .openPrivateChannelById(userId)
            .flatMap(channel -> channel.sendMessage(
                    """
                            Hey there, sorry to tell you but unfortunately you have been kicked from the guild %s.
                            If you think this was a mistake, please contact a moderator or admin of the guild.
                            he reason for the kick is: %s
                            """
                        .formatted(guildName, reason)))
            .queue(null,
                    throwable -> logger.info(
                            "I could not dm the user '' to inform them that they were kicked. ",
                            userId, throwable));

        event.getGuild()
            .kick(member, reason)
            .flatMap(v -> event.reply(member.getUser().getAsTag() + " was kicked by "
                    + author.getUser().getAsTag() + " for: " + reason))
            .queue();

        logger.info(" ' ()' kicked the user ' ()' due to reason being ''",
                author.getUser().getAsTag(), author.getIdLong(), member.getUser().getAsTag(),
                userId, reason);
    

错误消息说即使有 dms 已打开，它也无法 dm 用户

【参考方案1】：

如果您与用户共享服务器并且用户没有阻止您，您只能发送直接消息。您需要在禁止/踢用户之前发送直接消息。

例子：

user.openPrivateChannel()
  .flatMap(channel -> channel.sendMessage("you are banned")) // send a message to the channel
  .mapToResult() // this means the next flatMap runs on success and error signals
  .flatMap(result -> guild.ban(member)) // then ban the member
  .queue(); // queue the chain of actions

【讨论】：

非常感谢。