在springboot中对kafka进行读写的示例代码

<parent>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter-parent</artifactId>    <version>1.5.4.RELEASE</version>  </parent>  <properties>    <java.version>1.8</java.version>     <spring-kafka.version>1.2.2.RELEASE</spring-kafka.version>    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>  </properties>  <dependencies>    <dependency>      <groupId>org.springframework.boot</groupId>      <artifactId>spring-boot-starter-web</artifactId>    </dependency>    <dependency>      <groupId>org.springframework.boot</groupId>      <artifactId>spring-boot-starter</artifactId>    </dependency>    <dependency>      <groupId>org.springframework.boot</groupId>      <artifactId>spring-boot-starter-test</artifactId>      <scope>test</scope>    </dependency>    <dependency>      <groupId>org.springframework.boot</groupId>      <artifactId>spring-boot-starter-aop</artifactId>    </dependency>   <!-- spring-kafka -->      <dependency>      <groupId>org.springframework.kafka</groupId>      <artifactId>spring-kafka</artifactId>      <version>${spring-kafka.version}</version>      </dependency>      <dependency>      <groupId>org.springframework.kafka</groupId>      <artifactId>spring-kafka-test</artifactId>      <version>${spring-kafka.version}</version>      <scope>test</scope>      </dependency>   </dependencies>

package com.dhb.kafka.producer;import org.apache.kafka.clients.producer.ProducerConfig;import org.apache.kafka.common.serialization.StringSerializer;import org.springframework.beans.factory.annotation.Value;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.kafka.core.DefaultKafkaProducerFactory;import org.springframework.kafka.core.KafkaTemplate;import org.springframework.kafka.core.ProducerFactory;import java.util.HashMap;import java.util.Map;@Configurationpublic class SenderConfig {  @Value("${kafka.bootstrap-servers}")  private String bootstrapServers;  @Bean  public Map<String,Object> producerConfigs() {    Map<String,Object> props = new HashMap<>();    props.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG,this.bootstrapServers);    props.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class);    props.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG,StringSerializer.class);    props.put(ProducerConfig.ACKS_CONFIG,"0");    return props;  }  @Bean  public ProducerFactory<String,String> producerFactory() {    return new DefaultKafkaProducerFactory<>(producerConfigs());  }  @Bean  public KafkaTemplate<String,String> kafkaTemplate() {    return new KafkaTemplate<String, String>(producerFactory());  }  @Bean  public Sender sender() {    return new Sender();  }}

package com.dhb.kafka.producer;import lombok.extern.slf4j.Slf4j;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.kafka.core.KafkaTemplate;@Slf4jpublic class Sender {  @Autowired  private KafkaTemplate<String,String> kafkaTemplate;  public void send(String topic,String payload) {    log.info("sending payload='{}' to topic='{}'",payload,topic);    this.kafkaTemplate.send(topic,payload);  }}

package com.dhb.kafka.consumer;import org.apache.kafka.clients.consumer.ConsumerConfig;import org.apache.kafka.common.serialization.StringDeserializer;import org.springframework.beans.factory.annotation.Value;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.kafka.annotation.EnableKafka;import org.springframework.kafka.config.ConcurrentKafkaListenerContainerFactory;import org.springframework.kafka.core.ConsumerFactory;import org.springframework.kafka.core.DefaultKafkaConsumerFactory;import java.util.HashMap;import java.util.Map;@Configuration@EnableKafkapublic class ReceiverConfig {  @Value("${kafka.bootstrap-servers}")  private String bootstrapServers;  public Map<String,Object> consumerConfigs() {    Map<String,Object> props = new HashMap<>();    props.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG,bootstrapServers);    props.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);    props.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG,StringDeserializer.class);    props.put(ConsumerConfig.GROUP_ID_CONFIG,"helloword");    return props;  }  @Bean  public ConsumerFactory<String,String> consumerFactory() {    return new DefaultKafkaConsumerFactory<>(consumerConfigs());  }  @Bean  public ConcurrentKafkaListenerContainerFactory<String,String> kafkaListenerContainerFactory() {    ConcurrentKafkaListenerContainerFactory<String,String> factory =        new ConcurrentKafkaListenerContainerFactory<>();    factory.setConsumerFactory(consumerFactory());    return factory;  }  @Bean  public Receiver receiver() {    return new Receiver();  }}

package com.dhb.kafka.consumer;import lombok.extern.slf4j.Slf4j;import org.springframework.kafka.annotation.KafkaListener;import java.util.concurrent.CountDownLatch;@Slf4jpublic class Receiver {  private CountDownLatch latch = new CountDownLatch(1);  public CountDownLatch getLatch() {    return latch;  }  @KafkaListener(topics = "${kafka.topic.helloworld}")  public void receive(String payload) {    log.info("received payload='{}'",payload);    latch.countDown();  }}

package com.dhb.kafka.web;import com.dhb.kafka.producer.Sender;import lombok.extern.slf4j.Slf4j;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.bind.annotation.RestController;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import java.io.IOException;@RestController@Slf4jpublic class KafkaProducer {  @Autowired  Sender sender;  @RequestMapping(value = "/sender.action", method = RequestMethod.POST)  public void exec(HttpServletRequest request, HttpServletResponse response,String data) throws IOException{    this.sender.send("testtopic",data);    response.setCharacterEncoding("UTF-8");    response.setContentType("text/json");    response.getWriter().write("success");    response.getWriter().flush();    response.getWriter().close();  }}

package com.dhb.kafka;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplicationpublic class KafkaApplication {  public static void main(String[] args) {    SpringApplication.run(KafkaApplication.class,args);  }}

kafka: bootstrap-servers: 192.168.162.239:9092 topic:  helloworld: testtopic