spring-integration-kafka

1、pom.xml配置

<dependency>
        <groupId>org.springframework.integration</groupId>
        <artifactId>spring-integration-kafka</artifactId>
        <version>1.1.1.RELEASE</version>
    </dependency>
</dependencies>

2、producer.xml配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:int="http://www.springframework.org/schema/integration"
    xmlns:int-kafka="http://www.springframework.org/schema/integration/kafka"
    xmlns:task="http://www.springframework.org/schema/task"
    xsi:schemaLocation="http://www.springframework.org/schema/integration/kafka http://www.springframework.org/schema/integration/kafka/spring-integration-kafka.xsd
        http://www.springframework.org/schema/integration http://www.springframework.org/schema/integration/spring-integration.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task.xsd">
    <int:channel id="inputToKafka">
        <int:queue />
    </int:channel>
    <int-kafka:outbound-channel-adapter
        id="kafkaOutboundChannelAdapter" kafka-producer-context-ref="kafkaProducerContext"
        auto-startup="false" channel="inputToKafka" order="3">
        <int:poller fixed-delay="1000" time-unit="MILLISECONDS"
            receive-timeout="0" task-executor="taskExecutor" />
    </int-kafka:outbound-channel-adapter>
    <task:executor id="taskExecutor" pool-size="5"
        keep-alive="120" queue-capacity="500" />
    <bean id="producerProperties"
        class="org.springframework.beans.factory.config.PropertiesFactoryBean">
        <property name="properties">
            <props>
                <prop key="topic.metadata.refresh.interval.ms">3600000</prop>
                <prop key="message.send.max.retries">5</prop>
                <prop key="serializer.class">kafka.serializer.StringEncoder</prop>
                <prop key="request.required.acks">1</prop>
            </props>
        </property>
    </bean>
    <int-kafka:producer-context id="kafkaProducerContext"
        producer-properties="producerProperties">
        <int-kafka:producer-configurations>
            <int-kafka:producer-configuration
                broker-list="10.20.0.248:9092" topic="test" compression-codec="default" />
        </int-kafka:producer-configurations>
    </int-kafka:producer-context>
</beans>

3、consumer.xml配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:int="http://www.springframework.org/schema/integration"
    xmlns:int-kafka="http://www.springframework.org/schema/integration/kafka"
    xmlns:task="http://www.springframework.org/schema/task"
    xsi:schemaLocation="http://www.springframework.org/schema/integration/kafka 
                        http://www.springframework.org/schema/integration/kafka/spring-integration-kafka.xsd
                        http://www.springframework.org/schema/integration 
                        http://www.springframework.org/schema/integration/spring-integration.xsd
                        http://www.springframework.org/schema/beans 
                        http://www.springframework.org/schema/beans/spring-beans.xsd
                        http://www.springframework.org/schema/task 
                        http://www.springframework.org/schema/task/spring-task.xsd">
 
    <int:channel id="inputFromKafka">
        <int:queue/>
    </int:channel>
     
    <int-kafka:inbound-channel-adapter
        id="kafkaInboundChannelAdapter" kafka-consumer-context-ref="consumerContext"
        auto-startup="false" channel="inputFromKafka">
        <int:poller fixed-delay="10" time-unit="MILLISECONDS"
            max-messages-per-poll="5" />
    </int-kafka:inbound-channel-adapter>
 
    <bean id="consumerProperties"
        class="org.springframework.beans.factory.config.PropertiesFactoryBean">
        <property name="properties">
            <props>
                <prop key="auto.offset.reset">smallest</prop>
                <prop key="socket.receive.buffer.bytes">10485760</prop> <!-- 10M -->
                <prop key="fetch.message.max.bytes">5242880</prop>
                <prop key="auto.commit.interval.ms">1000</prop>
            </props>
        </property>
    </bean>
 
    <int-kafka:consumer-context id="consumerContext"
        consumer-timeout="4000" zookeeper-connect="zookeeperConnect" consumer-properties="consumerProperties">
        <int-kafka:consumer-configurations>
            <int-kafka:consumer-configuration
                group-id="mygroup" max-messages="5000">
                <int-kafka:topic id="test" streams="4" />
            </int-kafka:consumer-configuration>
            <!-- <int-kafka:consumer-configuration group-id="default3" value-decoder="kafkaSpecificDecoder"
                key-decoder="kafkaReflectionDecoder" max-messages="10"> <int-kafka:topic-filter 
                pattern="regextopic.*" streams="4" exclude="false" /> </int-kafka:consumer-configuration> -->
        </int-kafka:consumer-configurations>
    </int-kafka:consumer-context>
 
    <int-kafka:zookeeper-connect id="zookeeperConnect"
        zk-connect="10.20.0.248:2181" zk-connection-timeout="40000"
        zk-session-timeout="40000" zk-sync-time="200" />
</beans>

4、producer.java示例

package kafka.spring_kafka;
 
import java.util.Random;
 
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.integration.support.MessageBuilder;
import org.springframework.messaging.MessageChannel;
 
public class Producer {
    private static final String CONFIG = "/context.xml";
    private static Random rand = new Random();
 
    public static void main(String[] args) {
         
        final ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext(CONFIG, Producer.class);
        ctx.start();
 
        final MessageChannel channel = ctx.getBean("inputToKafka", MessageChannel.class);
 
        for (int i = 0; i < 10; i++) {
            //默认
            //boolean flag = channel.send(MessageBuilder.withPayload("消息" + rand.nextInt()).build());
            //System.out.println(flag);
            //指定partition 和 topic
            boolean flag = channel.send(MessageBuilder.withPayload("消息" + rand.nextInt()).setHeader("messageKey", String.valueOf(i)).setHeader("topic", "test").build());
            System.out.println(flag);
        }
        ctx.close();
    }
}

5、consumer.java示例

package kafka.spring_kafka;
 
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
 
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.integration.channel.QueueChannel;
import org.springframework.messaging.Message;
 
 
public class Consumer {
    private static final String CONFIG = "/consumer_context.xml";
    @SuppressWarnings({ "unchecked", "rawtypes" })
    public static void main(String[] args) {
        final ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext(CONFIG, Consumer.class);
        ctx.start();
 
        final QueueChannel channel = ctx.getBean("inputFromKafka", QueueChannel.class);
        Message msg;        
        while((msg = channel.receive()) != null) {
            HashMap map = (HashMap)msg.getPayload();
            Set<Map.Entry> set = map.entrySet();
            for (Map.Entry entry : set) {
                String topic = (String)entry.getKey();
                System.out.println("Topic:" + topic);
                ConcurrentHashMap<Integer,List<byte[]>> messages = (ConcurrentHashMap<Integer,List<byte[]>>)entry.getValue();
                Collection<List<byte[]>> values = messages.values();
                for (Iterator<List<byte[]>> iterator = values.iterator(); iterator.hasNext();) {
                    List<byte[]> list = iterator.next();
                    for (byte[] object : list) {
                        String message = new String(object);
                        System.out.println("\tMessage: " + message);
                    }
                }
            }
        }
        ctx.close();
    }
}

链接请参见:https://www.oschina.net/code/snippet_1866237_52084和http://colobu.com/2014/11/19/kafka-spring-integration-in-practice/