E-commerce platform source code Please add Penguin: 103874626. kafka message platform uses spring+kafka integration scheme, details are as follows:

1. Use the maximum version 2.1.0.RELEASE integration jar package: Spring integration Kafka

2. Zookeeper and Kafka distributed clusters use init.properties configuration scheme.

kafka.servers=127.0.0.1:9092    
kafka.topic=xxxooo  

1. Use the message producer spring context producer configuration scheme.

<?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:context="http://www.springframework.org/schema/context"    
     xsi:schemaLocation="http://www.springframework.org/schema/beans    
         http://www.springframework.org/schema/beans/spring-beans.xsd    
         http://www.springframework.org/schema/context    
         http://www.springframework.org/schema/context/spring-context.xsd">   
  
  
    <!-- Definition producer Parameters -->  
    <bean id="producerProperties" class="java.util.HashMap">  
        <constructor-arg>  
            <map>  
                <entry key="bootstrap.servers" value="localhost:9092" />  
                <entry key="group.id" value="2" />  
                <entry key="retries" value="10" />  
                <entry key="batch.size" value="16384" />  
                <entry key="linger.ms" value="1" />  
                <entry key="buffer.memory" value="33554432" />  
                <entry key="key.serializer"  
                    value="org.apache.kafka.common.serialization.IntegerSerializer" />  
                <entry key="value.serializer"  
                    value="org.apache.kafka.common.serialization.StringSerializer" />  
            </map>  
        </constructor-arg>  
    </bean>  
  
    <!-- Establish kafkatemplate Required producerfactory bean -->  
    <bean id="producerFactory"  
        class="org.springframework.kafka.core.DefaultKafkaProducerFactory">  
        <constructor-arg>  
            <ref bean="producerProperties" />  
        </constructor-arg>  
    </bean>  
  
    <!-- Establish kafkatemplate bean，When using, just inject this bean，Can use template Of send Message method -->  
    <bean id="KafkaTemplate" class="org.springframework.kafka.core.KafkaTemplate">  
        <constructor-arg ref="producerFactory" />  
        <constructor-arg name="autoFlush" value="true" />  
        <property name="defaultTopic" value="test" />  
    </bean>  
</beans>  

1. Use the message consumer spring context producer configuration scheme.

<?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:context="http://www.springframework.org/schema/context"    
     xsi:schemaLocation="http://www.springframework.org/schema/beans    
         http://www.springframework.org/schema/beans/spring-beans.xsd    
         http://www.springframework.org/schema/context    
         http://www.springframework.org/schema/context/spring-context.xsd">   
  
  
    <!-- Definition consumer Parameters -->  
    <bean id="consumerProperties" class="java.util.HashMap">  
        <constructor-arg>  
            <map>  
                <entry key="bootstrap.servers" value="localhost:9092" />  
                <entry key="group.id" value="0" />  
                <entry key="enable.auto.commit" value="true" />  
                <entry key="auto.commit.interval.ms" value="1000" />  
                <entry key="session.timeout.ms" value="15000" />  
                <entry key="key.deserializer"  
                    value="org.apache.kafka.common.serialization.IntegerDeserializer" />  
                <entry key="value.deserializer"  
                    value="org.apache.kafka.common.serialization.StringDeserializer" />  
            </map>  
        </constructor-arg>  
    </bean>  
  
    <!-- Establish consumerFactory bean -->  
    <bean id="consumerFactory"  
        class="org.springframework.kafka.core.DefaultKafkaConsumerFactory">  
        <constructor-arg>  
            <ref bean="consumerProperties" />  
        </constructor-arg>  
    </bean>  
  
    <!-- Classes that actually execute message consumption -->  
    <bean id="messageListernerConsumerService" class="com.sml.sz.kafka.KafKaConsumer" />  
  
    <!-- Consumer container configuration information -->  
    <bean id="containerProperties"  
        class="org.springframework.kafka.listener.config.ContainerProperties">  
        <constructor-arg value="test" />  
        <property name="messageListener" ref="messageListernerConsumerService" />  
    </bean>  
  
    <!-- Establish kafkatemplate bean，When using, just inject this bean，Can use template Of send Message method -->  
    <bean id="messageListenerContainer"  
        class="org.springframework.kafka.listener.KafkaMessageListenerContainer"  
        init-method="doStart">  
        <constructor-arg ref="consumerFactory" />  
        <constructor-arg ref="containerProperties" />  
    </bean>  
</beans>    

1. Using annotation to inject message types

@Autowired
private KafkaTemplate<xxx, ooo> kafkaTemplate;

1. Rewrite the getMessage method of MessageListener to get the message (Business Implementation)

2. RestFul service mode test message service

@CrossOrigin(origins = "*", maxAge = 3600, methods = { RequestMethod.GET, RequestMethod.POST, RequestMethod.DELETE,  
        RequestMethod.PUT })  
@RestController  
@RequestMapping(value = "/rest/kafka")  
public class KafKaProducer {  
      
    @RequestMapping(value = "/send", method = RequestMethod.GET)  
    public JSONObject save() {  
        System.out.println("+++++++++++++++++++++++++++++++");  
        kafkaTemplate.sendDefault("HongHu KAFKA Distributed message service test");    
        return null;  
    }  
      
    @Autowired    
    private KafkaTemplate<Integer, String> kafkaTemplate;  
      
    
  
}  

@RestController  
public class KafKaConsumer implements MessageListener<Integer, String> {  
  
    @Autowired  
    private LogService logService;  
    public void onMessage(ConsumerRecord<Integer, String> records) {  
        System.out.println("====================" + records);  
        Object o = records.value();  
        Log log = new Log();  
        log.setIsNewRecord(true);  
        log.setId(IdGen.uuid());  
        log.setTitle(String.valueOf(o));  
        logService.save(log);  
  
    }  
  
}  

Received the message: consumerrecord (topic = xxxoo, partition = 0, offset = 2489, createtime = 14796476448299, checksum = 3372898135, serialized key size = - 1, serialized value size = 40, key = null, value = Honghu Kafka distributed message service test)

This is the end!

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