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我正在嘗試將我的一些代碼從XML遷移到java dsl樣式(pre-java8)中。彈簧集成java dsl - java 7 - 在出站通道適配器中設置輪詢器
這是我創建的java配置,我無法弄清楚如何設置輪詢器。這些例子只討論全局輪詢器,但我需要在適配器中設置輪詢器。
@Bean
public MessageHandler kafkaMessageHandler() {
KafkaProducerMessageHandler<String, String> handler =
new KafkaProducerMessageHandler<>(kafkaTemplate());
handler.setMessageKeyExpression(new LiteralExpression("kafka-integration"));
handler.setTopicExpression(new LiteralExpression("headers.kafka_topic"));
return handler;
}
@Bean
public KafkaTemplate<String, String> kafkaTemplate() {
return new KafkaTemplate<>(new DefaultKafkaProducerFactory<String, String>(producerConfigs()));
}
@Bean
public Map<String, Object> producerConfigs() {
Map<String, Object> properties = new HashMap<>();
properties.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, "localhost:9092");
properties.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
properties.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, ByteArraySerializer.class);
// introduce a delay on the send to allow more messages to accumulate
properties.put(ProducerConfig.LINGER_MS_CONFIG, 1);
return properties;
}
的XML相當於我有如下:
<int-kafka:outbound-channel-adapter
id="kafkaOutboundChannelAdapter"
kafka-producer-context-ref="kafkaProducerContext"
channel="kafkaChannel" >
<int:poller fixed-rate="1000" max-messages-per-poll="10000}"/>
</int-kafka:outbound-channel-adapter>
感謝,正是我一直在尋找。 – Vidhya