如何使用电报API发送请求

Question

我正在学习使用Telegram客户端api（而不是bot api）。我目前正在尝试一些简单的事情，以试图了解它们是如何工作的。我目前正在尝试检索有关频道的信息，但没有设法解决。

根据我的搜索，几乎没有文档，示例，也没有教程。如果您可能知道一些教程，请与我分享这些教程。

我用来检索信息的方法：

    public static void printChatInfo(int chatId) {
        try {
            TLRequestChannelsGetChannels request = new TLRequestChannelsGetChannels();
            TLIntVector ints = new TLIntVector();
            ints.add(chatId);
            request.setId(ints);
            TLVector<TLAbsChat> chats = bot.getKernelComm().doRpcCallSync(request).getChats();
            for (TLAbsChat chat : chats) {
                System.out.println("*****************************" +
                        "\n*****************************" +
                        "\n*****************************" +
                        "\n*****************************" +
                        "\n*****************************");
                System.out.println(chat.getId());
                if (chat instanceof TLChat) {
                    TLChat chatCast = (TLChat) chat;
                    System.out.println(chatCast.getTitle());
                } else {
                    System.out.println("NOT INSTANCE");
                }
                System.out.println("*****************************" +
                        "\n*****************************" +
                        "\n*****************************" +
                        "\n*****************************" +
                        "\n*****************************");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

被称为：

    public void onTLMessage(TLMessage message) {
        final TLAbsPeer absPeer = message.getToId();
        System.out.println(message.getMessage());
        Deepthought.printChatInfo(message.getChatId());
        if (absPeer instanceof TLPeerUser) {
            onTLMessageForUser(message);
        } else {
            BotLogger.severe(LOGTAG, "Unsupported Peer: " + absPeer.toString());
        }
    }

System.out.println(message.getMessage());工作正常。

TLVector<TLAbsChat> chats = bot.getKernelComm().doRpcCallSync(request).getChats();处的异常：

java.util.concurrent.ExecutionException: org.telegram.api.engine.RpcException: INPUT_CONSTRUCTOR_INVALID_04A42D7B
    at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122)
    at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191)
    at org.telegram.bot.kernel.KernelComm.doRpcCallSync(KernelComm.java:185)
    at org.telegram.Deepthought.printChatInfo(Deepthought.java:97)
    at org.telegram.plugins.echo.handlers.TLMessageHandler.onTLMessage(TLMessageHandler.java:30)
    at org.telegram.plugins.echo.CustomUpdatesHandler.onTLMessage(CustomUpdatesHandler.java:98)
    at org.telegram.plugins.echo.CustomUpdatesHandler.onTLAbsMessageCustom(CustomUpdatesHandler.java:74)
    at org.telegram.plugins.echo.CustomUpdatesHandler.onTLUpdateNewMessageCustom(CustomUpdatesHandler.java:67)
    at org.telegram.bot.handlers.UpdatesHandlerBase.onTLUpdateNewMessage(UpdatesHandlerBase.java:327)
    at org.telegram.bot.handlers.UpdatesHandlerBase.processUpdate(UpdatesHandlerBase.java:122)
    at org.telegram.bot.kernel.MainHandler$UpdateHandlerThread.run(MainHandler.java:305)
Caused by: org.telegram.api.engine.RpcException: INPUT_CONSTRUCTOR_INVALID_04A42D7B
    at org.telegram.api.engine.TelegramApi$2.onError(TelegramApi.java:345)
    at org.telegram.api.engine.TelegramApi$ProtoCallback.onRpcError(TelegramApi.java:851)
    at org.telegram.mtproto.MTProto.onMTProtoMessage(MTProto.java:375)
    at org.telegram.mtproto.MTProto.onMTMessage(MTProto.java:255)
    at org.telegram.mtproto.MTProto.access$1300(MTProto.java:44)
    at org.telegram.mtproto.MTProto$ResponseProcessor.run(MTProto.java:754)

java.lang.NullPointerException
    at org.telegram.Deepthought.printChatInfo(Deepthought.java:97)
    at org.telegram.plugins.echo.handlers.TLMessageHandler.onTLMessage(TLMessageHandler.java:30)
    at org.telegram.plugins.echo.CustomUpdatesHandler.onTLMessage(CustomUpdatesHandler.java:98)
    at org.telegram.plugins.echo.CustomUpdatesHandler.onTLAbsMessageCustom(CustomUpdatesHandler.java:74)
    at org.telegram.plugins.echo.CustomUpdatesHandler.onTLUpdateNewMessageCustom(CustomUpdatesHandler.java:67)
    at org.telegram.bot.handlers.UpdatesHandlerBase.onTLUpdateNewMessage(UpdatesHandlerBase.java:327)
    at org.telegram.bot.handlers.UpdatesHandlerBase.processUpdate(UpdatesHandlerBase.java:122)
    at org.telegram.bot.kernel.MainHandler$UpdateHandlerThread.run(MainHandler.java:305)

我感谢任何可能解决或帮助解决此问题的想法。

谢谢。