Flink 写入数据到 Kafka
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zeek
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- [如何自定义 Data Source](https://www.zeekling.cn/articles/2020/05/04/1588559095224.html)
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- [Data Sink 介绍](https://www.zeekling.cn/articles/2020/05/04/1588666906660.html)
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- [自定义Data Sink](https://www.zeekling.cn/articles/2020/05/05/1588680092763.html)
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- [Flink 写入数据到 Kafka](https://www.zeekling.cn/articles/2020/05/15/1589474545288.html)
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48
pom.xml
48
pom.xml
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>org.scala-lang</groupId>
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<artifactId>scala-library</artifactId>
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<version>2.10.6</version>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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@ -98,10 +105,31 @@
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</dependency>
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</dependencies>
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<build>
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<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-dependency-plugin</artifactId>
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<executions>
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<execution>
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<id>copy-dependencies</id>
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<phase>package</phase>
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<goals>
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<goal>copy-dependencies</goal>
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</goals>
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<configuration>
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<type>jar</type>
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<includeTypes>jar</includeTypes>
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<outputDirectory>target/lib</outputDirectory>
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<excludeTransitive>false</excludeTransitive>
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<stripVersion>true</stripVersion>
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</configuration>
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</execution>
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</executions>
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</plugin>
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<!-- 该插件用于将Scala代码编译成class文件 -->
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<plugin>
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<groupId>net.alchim31.maven</groupId>
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@ -120,25 +148,9 @@
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-assembly-plugin</artifactId>
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<version>3.0.0</version>
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<configuration>
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<descriptorRefs>
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<descriptorRef>jar-with-dependencies</descriptorRef>
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</descriptorRefs>
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</configuration>
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<executions>
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<execution>
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<id>make-assembly</id>
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<phase>package</phase>
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<goals>
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<goal>single</goal>
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</goals>
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</execution>
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</executions>
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<artifactId>maven-jar-plugin</artifactId>
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</plugin>
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</plugins>
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</pluginManagement>
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</build>
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</project>
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3
src/main/java/META-INF/MANIFEST.MF
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3
src/main/java/META-INF/MANIFEST.MF
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Manifest-Version: 1.0
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Main-Class: com.thinker.kafka.FlinkSinkToKafka
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48
src/main/java/com/thinker/kafka/FlinkSinkToKafka.java
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48
src/main/java/com/thinker/kafka/FlinkSinkToKafka.java
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package com.thinker.kafka;
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import org.apache.flink.api.common.serialization.SimpleStringSchema;
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import org.apache.flink.streaming.api.datastream.DataStreamSource;
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import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
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import org.apache.flink.streaming.connectors.kafka.*;
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import java.util.Properties;
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/**
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* @author zeekling [lingzhaohui@zeekling.cn]
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* @version 1.0
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* @apiNote
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* @since 2020-05-14
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*/
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public class FlinkSinkToKafka {
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private static final String READ_TOPIC = "student-write";
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public static void main(String[] args) throws Exception {
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final StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
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Properties props = new Properties();
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props.put("bootstrap.servers", "localhost:9092");
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props.put("zookeeper.connect", "localhost:2181");
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props.put("group.id", "student-group");
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props.put("key.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");
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props.put("value.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");
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props.put("auto.offset.reset", "latest");
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DataStreamSource<String> student = env.addSource(new FlinkKafkaConsumer011<>(
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READ_TOPIC, //这个 kafka topic 需要和上面的工具类的 topic 一致
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new SimpleStringSchema(),
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props)).setParallelism(1);
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student.print();
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Properties properties = new Properties();
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properties.setProperty("bootstrap.servers", "localhost:9092");
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properties.setProperty("zookeeper.connect", "localhost:2181");
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properties.setProperty("group.id", "student-write");
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student.addSink(new FlinkKafkaProducer011<String>(
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"student-write",
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new SimpleStringSchema(),
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properties
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)).name("flink-connectors-kafka").setParallelism(1);
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student.print();
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env.execute("flink learning connectors kafka");
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}
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}
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@ -26,7 +26,7 @@ public class App {
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}
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public static void main(String[] args) throws Exception {
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System.out.println("H ello World!");
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System.out.println("Hello World!");
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if (args.length != 2) {
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System.err.println("USAGE:\nSocketTextStreamWordCount <hostname> <port>");
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return;
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@ -17,7 +17,7 @@ public class KafkaUtils2 {
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private static final String broker_list = "localhost:9092";
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private static final String topic = "student"; //kafka topic 需要和 flink 程序用同一个 topic
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private static final String topic = "student-write"; //kafka topic 需要和 flink 程序用同一个 topic
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private static void writeToKafka() throws InterruptedException {
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Properties props = new Properties();
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