Question

我正在查看Excel的RTI DDS加载项，我试图重写Hello_simple HelloPublisher.java示例，它附带它来发布字符串，然后让Excel来获取它。一切都有效，除了显示我喂它的字符串的值。（它收集消息发送的时间，所有其他元数据就好了）

我的代码看起来像这样：

public class Publish {

public static void main(final String[] args){
    // Create the DDS Domain participant on domain ID 123
    final DomainParticipant participant = DomainParticipantFactory.get_instance().create_participant(
        123, //Domain ID
        DomainParticipantFactory.PARTICIPANT_QOS_DEFAULT,
        null, // Listener
        StatusKind.STATUS_MASK_NONE);

    if (participant == null) {
        System.err.println("Unable to create domain participant");
        return;
    }

    // Create the topic "Message" for the String type
    final Topic topic = participant.create_topic(
        "Message",
        StringTypeSupport.get_type_name(),
        DomainParticipant.TOPIC_QOS_DEFAULT,
        null, // listener
        StatusKind.STATUS_MASK_NONE);

    if (topic == null) {
        System.err.println("Unable to create topic.");
        return;
    }

    // Create the data writer using the default publisher
    final StringDataWriter dataWriter =
        (StringDataWriter) participant.create_datawriter(
            topic,
            Publisher.DATAWRITER_QOS_DEFAULT,
            null, // listener
            StatusKind.STATUS_MASK_NONE);

    if (dataWriter == null) {
        System.err.println("Unable to create data writer\n");
        return;
    }


    System.out.println("Ready to write data.");
    System.out.println("When the subscriber is ready, you can start writing.");
    System.out.print("Press CTRL+C to terminate or enter an empty line to do a clean shutdown.\n\n");

    final BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

    try {
        while (true) {
            System.out.print("Please type a message> ");
            final String value = reader.readLine();
            if (value == null) {break;}
            dataWriter.write(value, InstanceHandle_t.HANDLE_NIL);
            if (value.equals("")) { break; }
        }
    } catch (final IOException e) {e.printStackTrace();
    } catch (final RETCODE_ERROR e) {e.printStackTrace();}

    System.out.println("Exiting...");
    participant.delete_contained_entities();
    DomainParticipantFactory.get_instance().delete_participant(participant);
  }
}

我在Excel中为显示值而进行的调用是

=RTD("dds2excel.connect",,"TYPE:DDS::String","TYPENAME:DDS::String","TOPIC:Message","FIELD:value")

（由RTI加载项自动生成）我对RTI和DDS还不太熟悉，但我觉得Excel并不想要获取这些数据的实际内容，因为它认为它不属于它？因此，为什么它只承认它正在收听的域的元数据。

任何指针都会非常感激。

在Excel中读取用Java生成的RTI DDS数据

0 个答案: