java代码之kakfa生产者

Kafka原理图

JAVA源代码之kafka生产者，本次客户端使用kafka的console命令行，消费，生产者使用代码编码。看了好多生产者代码都带有props.put("zk.connect", "n2:2181/jafka");  真是感到不解，没有这个参数也可以运行的好好的，实践出真知，弄懂原理真的很重要，具体如下：

import java.util.Properties;

import kafka.javaapi.producer.Producer;
import kafka.producer.KeyedMessage;
import kafka.producer.ProducerConfig;
/**
 * 0.7.2
 * @author Administrator
 *
 */
public class ProducerSample {  
    public static void main(String[] args) {
       String topicName = "test";
       String data = "this is a java-test. i Am gaojs";
        ProducerSample ps = new ProducerSample(); 
 
        Properties props = new Properties();  
        props.put("metadata.broker.list", "192.168.1.101:9092");  
        props.put("serializer.class", "kafka.serializer.StringEncoder");  
        props.put("request.required.acks","1"); 
        ProducerConfig config = new ProducerConfig(props); 
        Producer<String, String> producer = new Producer<String, String>(config); 
        KeyedMessage<String, String> keyedMessage = new KeyedMessage<String, String>(topicName, data); 
        producer.send(keyedMessage);
        producer.close(); 
    } 
} 

 

 

MAVEN环境

 

<dependencies>
        <dependency>
            <groupId>org.apache.kafka</groupId>
            <artifactId>kafka_2.10</artifactId>
            <version>0.9.0.1</version>
            <exclusions>
                <exclusion>
                    <artifactId>jmxtools</artifactId>
                    <groupId>com.sun.jdmk</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>jmxri</artifactId>
                    <groupId>com.sun.jmx</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>jms</artifactId>
                    <groupId>javax.jms</groupId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.15</version>
            <exclusions>
                <exclusion>
                    <artifactId>jmxtools</artifactId>
                    <groupId>com.sun.jdmk</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>jmxri</artifactId>
                    <groupId>com.sun.jmx</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>jms</artifactId>
                    <groupId>javax.jms</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>mail</artifactId>
                    <groupId>javax.mail</groupId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

 

实践截图

 

启动zk

 

创建topic

 

 

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