kafka學習（四）---- Kafka整合SpringMVC實例（二）

kafka學習（四）---- Kafka整合SpringMVC實例（二）

一、概述

目前沒有很好的整合Kafka的案例，本身參考着使用spring-integration-kafka框架寫了一個： Kafka整合SpringMVC實例，但同時也發現官方文檔也不全，因此又用spring簡單的實現了一下，感受這個比使用spring-integration-kafka框架更簡單一點，可是須要對kafka做深刻的瞭解，廢話很少說直接切入正題。

二、實例

1. 安裝Zookeeper

Zookeeper下載基本使用

2. 安裝Kafka

kafka基本概念以及環境搭建

3. 建立spring項目（建議使用maven方式建立）

項目截圖（小紅叉不影響項目的啓動）

pom.xml配置

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.kafka.demo</groupId>
  <artifactId>SpringWithKafka</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>SpringWithKafka Maven Webapp</name>
  <url>http://maven.apache.org</url>
  
  <properties>
		<spring.version>4.2.5.RELEASE</spring.version>
	</properties>
  
  <dependencies>
    <dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.11</version>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>javax.servlet-api</artifactId>
			<version>3.1.0</version>
			<scope>provided</scope>
		</dependency>
		<!-- spring -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-core</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-web</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<!-- spring-kafka -->
		<dependency>
		    <groupId>org.springframework.kafka</groupId>
		    <artifactId>spring-kafka</artifactId>
		    <version>1.0.3.RELEASE</version>
		</dependency>
		<!-- 日誌 -->
		<dependency>
			<groupId>commons-logging</groupId>
			<artifactId>commons-logging</artifactId>
			<version>1.1.1</version>
		</dependency>
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-log4j12</artifactId>
			<version>1.7.5</version>
		</dependency>
		<dependency>
			<groupId>javax</groupId>
			<artifactId>javaee-api</artifactId>
			<version>7.0</version>
		</dependency>
		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-core</artifactId>
			<version>2.7.6</version>
		</dependency>
		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-databind</artifactId>
			<version>2.7.6</version>
		</dependency>
		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-annotations</artifactId>
			<version>2.7.6</version>
		</dependency>
  </dependencies>
  <build>
    <finalName>SpringWithKafka</finalName>
  </build>
</project>

kafka-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: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">  
      
     <context:property-placeholder location="classpath:init.properties" />  
      
     <!-- 定義producer的參數 -->  
     <bean id="producerProperties" class="java.util.HashMap">  
        <constructor-arg>  
            <map>  
                <entry key="bootstrap.servers" value="${bootstrap.servers}"/>  
                <entry key="group.id" value="0"/>  
                <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>  
       
     <!-- 建立kafkatemplate須要使用的producerfactory bean -->  
     <bean id="producerFactory" class="org.springframework.kafka.core.DefaultKafkaProducerFactory">  
        <constructor-arg>  
            <ref bean="producerProperties"/>  
        </constructor-arg>  
     </bean>  
       
     <!-- 建立kafkatemplate，使用的時候，只須要注入這個bean，便可使用template的send消息方法 -->  
     <bean id="KafkaTemplate" class="org.springframework.kafka.core.KafkaTemplate">  
        <constructor-arg ref="producerFactory"/>  
        <constructor-arg name="autoFlush" value="true"/>  
        <property name="defaultTopic" value="myTopic"/>  
     </bean>  
  
</beans>

kafka-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: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">  
      
     <context:property-placeholder location="classpath:init.properties" />  
  
    <!-- 定義consumer的參數 -->  
     <bean id="consumerProperties" class="java.util.HashMap">  
        <constructor-arg>  
            <map>  
                <entry key="bootstrap.servers" value="${bootstrap.servers}"/>  
                <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>  
       
     <!-- 建立consumerFactory bean -->  
     <bean id="consumerFactory" class="org.springframework.kafka.core.DefaultKafkaConsumerFactory">  
        <constructor-arg>  
            <ref bean="consumerProperties"/>  
        </constructor-arg>  
     </bean>  
       
     <!-- 實際執行消息消費的類 -->  
     <bean id="messageListernerConsumerService" class="com.kafka.demo.service.KafkaConsumerService"/>  
       
     <!-- 消費者容器配置信息 -->  
     <bean id="containerProperties" class="org.springframework.kafka.listener.config.ContainerProperties">  
        <constructor-arg value="myTopic"/>  
        <property name="messageListener" ref="messageListernerConsumerService"/>  
     </bean>  
       
     <!-- 註冊消費者容器到監聽器 -->  
     <bean id="messageListenerContainer" class="org.springframework.kafka.listener.KafkaMessageListenerContainer" init-method="doStart">  
        <constructor-arg ref="consumerFactory"/>  
        <constructor-arg ref="containerProperties"/>  
     </bean>  
  
</beans>

其餘代碼請參看實例源碼：源碼下載

github下載地址

三、實例演示

a、運行項目訪問http://localhost:8080/SpringWithKafka/kafka/test //測試地址 效果如圖：

b、查看kafka控制檯信息輸出,以下圖：