Flink链接kafka并解析Json文件(二)_flinkkafkaconsumer 解析json-优快云博客

本文链接：https://blog.youkuaiyun.com/morsunlight/article/details/112966060

该博客介绍了如何配置Flink从Kafka消费数据的Scala程序，包括在pom.xml文件中添加相关依赖，并展示了一个简单的消费代码示例。博主遇到了FlinkKafkaConsumer011类的版本冲突问题，并提供了上一篇文章的链接作为解决方案。

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Flink从kafka中消费数据(scala版本):

pom文件:

<dependency>
    <groupId>org.apache.flink</groupId>
    <artifactId>flink-scala_2.11</artifactId>
    <version>1.10.1</version>
</dependency>
<dependency>
    <groupId>org.apache.flink</groupId>
    <artifactId>flink-streaming-scala_2.11</artifactId>
    <version>1.10.1</version>
</dependency>
<dependency>
    <groupId>org.apache.flink</groupId>
    <artifactId>flink-clients_2.11</artifactId>
    <version>1.10.1</version>
</dependency>

<dependency>
    <groupId>org.apache.flink</groupId>
    <artifactId>flink-connector-kafka-0.11_2.11</artifactId>
    <version>1.10.1</version>
</dependency>

<build>
    <plugins>
        
        <plugin>
            <groupId>net.alchim31.maven</groupId>
            <artifactId>scala-maven-plugin</artifactId>
            <version>3.2.2</version>
            <executions>
                <execution>
                    
                    <goals>
                        <goal>compile</goal>
                        <goal>testCompile</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-assembly-plugin</artifactId>
            <version>3.0.0</version>
            <configuration>
                <descriptorRefs>
                    <descriptorRef>jar-with-dependencies</descriptorRef>
                </descriptorRefs>
            </configuration>
            <executions>
                <execution>
                    <id>make-assembly</id>
                    <phase>package</phase>
                    <goals>
                        <goal>single</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

flink链接kafka
import java.util.Properties
import org.apache.flink.streaming.api.scala._
import org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumer011
import org.apache.flink.streaming.util.serialization.SimpleStringSchema

val properties = new Properties()
properties.setProperty("bootstrap.servers", "xxx:9092,xxx:9092，xxx:9092")
properties.setProperty("group.id", "consumer-group")
properties.setProperty("key.deserializer", "org.apache.kafka.common.serialization.StringDeserializer")
properties.setProperty("value.deserializer", "org.apache.kafka.common.serialization.StringDeserializer")
properties.setProperty("auto.offset.reset", "latest")

val kafkaDS: DataStream[String] = env.addSource(
  new FlinkKafkaConsumer011[String](
    "主题",
    new SimpleStringSchema(),
    properties)
)

遇到的问题:

FlinkKafkaConsumer011这个类因为版本问题会引起冲突。解决方案在上一篇:https://blog.youkuaiyun.com/morsunlight/article/details/112962422