kafka生产者配置遇到的坑

接入其他系统的kafka集群时，遇到了一下问题：

org.springframework.kafka.support.LoggingProducerListener [76] [http-nio-9050-exec-1]- Exception thrown when sending a message with key='null' and payload='test' to topic lapm_notice:
org.apache.kafka.common.errors.TimeoutException: Failed to update metadata after 60000 ms.

　起初还是照抄网上给的接入的方法，按部就班的开始写客户端，。。。结果完成时测试执行到了send方法时出现了这种问题，找度娘说时因为你的topic不可用，我去，这个时调别人的集群，我哪里能管到，所以这个问题果断pass，熬了好几天，试了几种不同的方法，终于得以见天日，----版本的问题，我使用的kafka生产者版本是1.0.1，但是人家的集群的版本是0.9.0.1，我去，差了这么个版本就让我挂了，果断换了之后，发消息成功.

 下面是我的配置代码：

import org.apache.kafka.clients.producer.KafkaProducer;
import org.apache.kafka.clients.producer.ProducerConfig;
import org.apache.kafka.common.serialization.StringSerializer;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.stereotype.Component;

import javax.annotation.Resource;
import java.util.Properties;

@Component
public class KafkaProducerUtil implements InitializingBean {

    @Resource
    private Properties props;
    @Resource
    private KafkaConfig kafkaConfig;

    private KafkaProducer<String, String> producer;

    public void init() {
        producer = new KafkaProducer<String, String>(getProps());
    }

    public KafkaProducer<String, String> getProducer() {
        return producer;
    }

    private Properties getProps() {
        // 服务器ip:端口号，集群用逗号分隔
        props.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, kafkaConfig.getServers());
        // key序列化指定类
        props.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class.getName());
        // value序列化指定类
        props.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, StringSerializer.class.getName());
        return props;
    }

    @Override
    public void afterPropertiesSet() throws Exception {
        init();
    }
}

导入的maven为：

<!-- kafka客户端引入以支持kafka输出 -->
        <dependency>
            <groupId>org.apache.kafka</groupId>
            <artifactId>kafka_2.10</artifactId>
            <version>${kafka.version}</version>
            <exclusions>
                <exclusion>
                    <artifactId>slf4j-log4j12</artifactId>
                    <groupId>org.slf4j</groupId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.apache.kafka</groupId>
            <artifactId>kafka-clients</artifactId>
            <version>${kafka.version}</version>
        </dependency>

另外，以log4j2的方式配置发消息的方式也是相当实用的（某司给的demo，可惜我的架构不是这种的），但是这种需要你的日志框架是log4j2，代码：

<?xml version="1.0" encoding="UTF-8"?>
<Configuration name="defaultConfiguration" status="off" strict="true" monitorInterval="5">
	<properties>
		<!-- 日志输出格式配置 -->
		<property name="patternlayout">%date{yyyy-MM-dd HH:mm:ss,SSS}|%level|%thread|%class{36}|%M|%msg%xEx|$|$|%n</property>
		<!-- 测试环境监控预警平台Kafka ip -->
        <property name="kafkaServers">127.0.0.1:9020</property>
	</properties>

	<Appenders>
		<Console name="Console" target="SYSTEM_OUT">
			<PatternLayout pattern="${patternlayout}" />
		</Console>
		<!-- 预警类日志KafkaAppender, lapm_notice为预警类Kafka topic -->
		<Kafka name="NoticeKafkaAppender" topic="lapm_notice" syncSend="false">
			<PatternLayout pattern="${patternlayout}" />
			<Property name="bootstrap.servers">${kafkaServers}</Property>
		</Kafka>
		<!-- 统计类日志KafkaAppender, lapm_statistics为统计类Kafka topic -->
		<Kafka name="StatisticsKafkaAppender" topic="lapm_statistics" syncSend="false">
			<PatternLayout pattern="${patternlayout}" />
			<Property name="bootstrap.servers">${kafkaServers}</Property>
		</Kafka>
		<!-- 场景类日志KafkaAppender, lapm_scene为场景类Kafka topic -->
		<Kafka name="SceneKafkaAppender" topic="lapm_scene" syncSend="false">
			<PatternLayout pattern="${patternlayout}" />
			<Property name="bootstrap.servers">${kafkaServers}</Property>
		</Kafka>
	</Appenders>

	<Loggers>
		<AsyncRoot level="info" includeLocation="true">
			<AppenderRef ref="Console" />
		</AsyncRoot>
		<!-- 预警类日志AsyncLogger -->
		<AsyncLogger name="Notice" level="info" includeLocation="true" additivity="true">
			<AppenderRef ref="NoticeKafkaAppender" />
		</AsyncLogger>
		<!-- 统计类日志 AsyncLogger -->
		<AsyncLogger name="Statistics" level="info" includeLocation="true" additivity="true">
			<AppenderRef ref="StatisticsKafkaAppender" />
		</AsyncLogger>
		<!-- 场景类日志AsyncLogger -->
		<AsyncLogger name="Scene" level="info" includeLocation="true" additivity="true">
			<AppenderRef ref="SceneKafkaAppender" />
		</AsyncLogger>
	</Loggers>
</Configuration>

/** 预警类日志 */
private Logger noticeLogger = LoggerFactory.getLogger("Notice");

noticeLogger.error(NoticeLogUtils.getNoticeInfo(businessCode, userCode, NoticeType.NOTICE_WARN, url, arguments, error, sysModuleCode, requestId, requestSerial)
				+ "异常预警日志系统自定义部分");

　maven配置如下：

<!-- LOG4j2引入 -->
		<dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-api</artifactId>
            <version>${log4j2.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-core</artifactId>
            <version>${log4j2.version}</version>
        </dependency>	
        <dependency>
			<groupId>org.apache.logging.log4j</groupId>
			<artifactId>log4j-web</artifactId>
			<version>${log4j2.version}</version>
		</dependency>
		<dependency>
			<groupId>org.apache.logging.log4j</groupId>
			<artifactId>log4j-slf4j-impl</artifactId>
			<version>${log4j2.version}</version>
		</dependency>
		<!-- SLF4J2引入 -->
		<dependency>  
		    <groupId>org.slf4j</groupId>  
		    <artifactId>slf4j-api</artifactId>  
		    <version>${slf4j.version}</version>  
		</dependency>  
		<dependency>  
		    <groupId>org.slf4j</groupId>  
		    <artifactId>jcl-over-slf4j</artifactId>  
		    <version>${slf4j.version}</version>  
		    <scope>runtime</scope>
		</dependency>
		<!-- LOG4J2异步日志需引入disruptor -->
 		<dependency>
			<groupId>com.lmax</groupId>
			<artifactId>disruptor</artifactId>
			<version>${lmax.version}</version>
		</dependency>
		<!-- kafka客户端引入以支持kafka输出 -->
		<dependency>
			<groupId>org.apache.kafka</groupId>
			<artifactId>kafka_2.10</artifactId>
			<version>${kafka.version}</version>
			<exclusions>
				<exclusion>
					<artifactId>slf4j-log4j12</artifactId>
					<groupId>org.slf4j</groupId>
				</exclusion>
			</exclusions>
		</dependency>
		<dependency>
			<groupId>org.apache.kafka</groupId>
			<artifactId>kafka-clients</artifactId>
			<version>${kafka.version}</version>
		</dependency>