如何打印出这个 RestAction / List答案

【问题标题】：How to print out this RestAction / List如何打印出这个 RestAction / List
【发布时间】：2021-02-16 17:22:52
【问题描述】：

我正在为我的服务器创建 Discord-Bot。通常我可以很容易地打印出 Lists，但是这个 RestActionList 会烧我的大脑：D。

谁能告诉我如何打印一个 RestAction？

public class ShowBannsCommand implements ServerCommand {
    @Override
    public void performCommand(Member m, TextChannel channel, Message message, MessageReceivedEvent event, EventWaiter waiter) {
        Guild guild = event.getGuild();

        if(m.hasPermission(Permission.BAN_MEMBERS)) {
            message.delete().queue();

            RestAction<List<Guild.Ban>> restAction = guild.retrieveBanList();

            EmbedBuilder builder = EmbedHelper.getDefault("Bannlist of " + guild.getName(), m.getAsMention() + ", here is the bannlist you requested.")
                    .setAuthor("Request by " + m.getUser().getName(), EmbedHelper.link, m.getUser().getEffectiveAvatarUrl())
                    .addField("Server:", guild.getName(), true)
                    .addField("Total banns:", "", true)
                    .addField("Banns:", "", false);
            channel.sendMessage(builder.build()).queue();
        }
    }
}

我使用的是 JDA 4.2.0_214

【问题讨论】：

标签： java discord bots discord-jda

【解决方案1】：

使用队列回调：

guild.retrievBanList().queue(list -> {
    // Note this list should have a hardcoded limit to prevent hitting the character limit
    String banList = list.stream().map(User::getName).collect(Collectors.joining(", "));
    EmbedBuilder builder = EmbedHelper.getDefault("Bannlist of " + guild.getName(), m.getAsMention() + ", here is the bannlist you requested.")
                    .setAuthor("Request by " + m.getUser().getName(), EmbedHelper.link, m.getUser().getEffectiveAvatarUrl())
                    .addField("Server:", guild.getName(), true)
                    .addField("Total banns:", String.valueOf(list.size()), true)
                    .addField("Bans:", banList, false);
    channel.sendMessage(builder.build()).queue();
});

【讨论】：