Java Api Consumer 连接启用Kerberos认证的Kafka

java程序连接到一个需要Kerberos认证的kafka集群上，消费生产者生产的信息，kafka版本是2.10-0.10.0.1；

Java程序以maven构建，（怎么构建maven工程，可去问下度娘：“maven工程入门示例”）

先上pom.xml文件

<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.ht</groupId>
<artifactId>kafkaTest</artifactId>
<version>1.0</version>
<dependencies>
<dependency>
<groupId>org.apache.kafka</groupId>
<artifactId>kafka-clients</artifactId>
<version>0.10.0.1</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugi
4000
n>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
</plugins>
</build>
</project>

然后是Jave代码，先上图，一一解释图中标识：



注释：

    1：可以将所需的配置文件加载到程序；（参见：度娘--“JDK 运行参数 JAVA -Dxxx与System.setProperty()的关系”）

    2：新版本的Producter和Consumer都可以直接连接brocker，不用再配置zookeeper的相关信息，所以这里是要连接的kafka的主机ip和端口号

    3：设置的topic的组Id

    4：设置偏移量

    5：设置认证配置

    6：设置所要读取的主题Topic

import java.util.Arrays;
import java.util.Properties;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.apache.kafka.clients.consumer.ConsumerRecords;
import org.apache.kafka.clients.consumer.KafkaConsumer;
public class ConsumerTest {
public static void main(String[] args) {

//		System.setProperty("java.security.auth.login.config", "/home/kafka/kafka_client_jaas.conf");
//		System.setProperty("java.security.krb5.conf", "/home/kafka/krb5.conf");
// 环境变量添加，需要输入配置文件的路径System.out.println("===================配置文件地址"+fsPath+"\\conf\\cons_client_jaas.conf");
Properties props = new Properties();
props.put("bootstrap.servers", "192.168.132.130:9092");
props.put("group.id", "group-1111");
props.put("enable.auto.commit", "false");
props.put("auto.commit.interval.ms", "1000");
props.put("auto.offset.reset", "earliest");
props.put("session.timeout.ms", "30000");
props.put("key.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");
props.put("value.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");

props.put("security.protocol", "SASL_PLAINTEXT");
props.put("sasl.mechanism", "GSSAPI");
props.put("sasl.kerberos.service.name", "kafka");

KafkaConsumer kafkaConsumer = new KafkaConsumer<>(props);
kafkaConsumer.subscribe(Arrays.asList("cust_info"));
while (true) {
ConsumerRecords<String, String> records = kafkaConsumer.poll(1);
for (ConsumerRecord<String, String> record : records)
System.out.println("Partition: " + record.partition() + " Offset: " + record.offset() + " Value: " + record.value() + " ThreadID: " + Thread.currentThread().getId());

}
}
}

以上就是所有配置，将工程通过导出为Runnable JAR file 导出为jar文件

直接运行   java -jar jar包名.jar  即可;

如果程序里没有设置1相关的配置文件，也可以运行下列命令：

java -Djava.security.auth.login.config=/home/kafka/kafka_client_jaas.conf   -Djava.security.krb5.conf=/home/kafka/krb5.conf  -jar  jar包名.jar