spring-kafka

问题 I want to be able to read in topics through the properties without specifying anything on the Kafka listener annotation. Not using Spring Boot. I tried having the topics read straight from the properties object via a "topics" key. That gives an error: IllegalStateException:topics, topicPattern, or topicPartitions must be provided. // some class @KafkaListener public void listener(List<String> messages) { System.out.print(messages); } //some other class @Bean public ConsumerFactory<String,

问题 I want to be able to read in topics through the properties without specifying anything on the Kafka listener annotation. Not using Spring Boot. I tried having the topics read straight from the properties object via a "topics" key. That gives an error: IllegalStateException:topics, topicPattern, or topicPartitions must be provided. // some class @KafkaListener public void listener(List<String> messages) { System.out.print(messages); } //some other class @Bean public ConsumerFactory<String,

问题 I want to be able to read in topics through the properties without specifying anything on the Kafka listener annotation. Not using Spring Boot. I tried having the topics read straight from the properties object via a "topics" key. That gives an error: IllegalStateException:topics, topicPattern, or topicPartitions must be provided. // some class @KafkaListener public void listener(List<String> messages) { System.out.print(messages); } //some other class @Bean public ConsumerFactory<String,

问题 Nowadays in microservice world, i’m seeing alot of design in my workplace that uses kafka messaging when you can achieve similar results using rest api calls between microservices. Technically you can stop using rest api calls altogether and instead use kafka messaging. I really want to know the best practice, pros and cons, when to use api calls between microsevices, when to use kafka messaging. Lets put a real life example: I have an inventory service and a vendor service. Everyday vendor

问题 I want to implement Kafka producer which sends and receives Java Serialized Objects. I tried this: Producer: @Configuration public class KafkaProducerConfig { @Value(value = "${kafka.bootstrapAddress}") private String bootstrapAddress; @Bean public ProducerFactory<String, SaleRequestFactory> saleRequestFactoryProducerFactory() { Map<String, Object> configProps = new HashMap<>(); configProps.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapAddress); configProps.put(ProducerConfig.KEY

问题 I want to implement Kafka Consumer and Producer which sends and receives Java Objects. Full Source I tried this: Producer: @Configuration public class KafkaProducerConfig { @Value(value = "${kafka.bootstrapAddress}") private String bootstrapAddress; @Bean public ProducerFactory<String, SaleRequestFactory> saleRequestFactoryProducerFactory() { Map<String, Object> configProps = new HashMap<>(); configProps.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapAddress); configProps.put

问题 I want to implement Kafka producer which sends and receives Java Serialized Objects. I tried this: Producer: @Configuration public class KafkaProducerConfig { @Value(value = "${kafka.bootstrapAddress}") private String bootstrapAddress; @Bean public ProducerFactory<String, SaleRequestFactory> saleRequestFactoryProducerFactory() { Map<String, Object> configProps = new HashMap<>(); configProps.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapAddress); configProps.put(ProducerConfig.KEY

来源： https://stackoverflow.com/questions/64739250/available-expected-at-least-1-bean-which-qualifies-as-autowire-candidate

来源： https://stackoverflow.com/questions/64739250/available-expected-at-least-1-bean-which-qualifies-as-autowire-candidate

来源： https://stackoverflow.com/questions/64739250/available-expected-at-least-1-bean-which-qualifies-as-autowire-candidate