我有一个Kafka主题，有两个分区。我已经创建了一个消息处理程序，有两个不同的键。

@Bean
@ServiceActivator(inputChannel = "pushDataRequestChannel")
public MessageHandler pushDataRequestHandler(final KafkaTemplate<String, String> kafkaTemplate) {
    KafkaProducerMessageHandler<String, String> handler =
            new KafkaProducerMessageHandler<>(kafkaTemplate);
    handler.setMessageKeyExpression(new LiteralExpression(topicProperties.getProducerKey()));
    return handler;
}

@Bean
public DirectChannel processDataRequestChannel() {
    return new DirectChannel();
}

@Bean
@ServiceActivator(inputChannel = "processDataRequestChannel")
public MessageHandler processDataRequestHandler(final KafkaTemplate<String, String> kafkaTemplate) {
    KafkaProducerMessageHandler<String, String> handler =
            new KafkaProducerMessageHandler<>(kafkaTemplate);
    handler.setMessageKeyExpression(new LiteralExpression(topicProperties.getProducerKeyOne()));
    return handler;
}

1.组id
1.分区键
所以，我将向分区0发送消息，只针对奇数。对于事件号，它应该转到分区1。
这是我的逻辑

for(int i=0; i < 6 ; i++)
        {
            Predicate<Integer> isEven = n -> n % 2 == 0;

            // Check if the number is even or odd and display the result
            if (isEven.test(i)) {
                System.out.println(i + " is an even number.");
                MessageNeedToSend message = new MessageNeedToSend();
                ----
                ---
                ---
                pushDataRequestChannel.send(MessageBuilder
                        .withPayload(objectMapper.writeValueAsString(message))
                        .copyHeaders(headers)
                        .build());
            } else {
                MessageNeedToSend message = new MessageNeedToSend();
                ----
                ---
                ---
                processDataRequestChannel.send(MessageBuilder
                        .withPayload(objectMapper.writeValueAsString(message))
                        .copyHeaders(headers)
                        .build());
                System.out.println(i + " is an odd number.");
            }
        }

但它总是去分区0。
partition_1_key -706172746974696 F6 E5 F315 F6 B6579（byte array）-- 1550936367（murmur hash 2）-1550936367% 2 = 1 -（根据我的理解，应该是分区1）
group_id -67726 F75705 F6964（byte array）-- 2186850892（murmur hash 2）-2186850892% 2 = 0 -（据我所知应该是分区0）
但它总是去分区0;
你能告诉我