(2)定义一个kafka生产者 packagecom.producers;importcom.alibaba.fastjson.JSONObject;importcom.pojo.Event;importcom.pojo.WaterSensor;importorg.apache.kafka.clients.producer.KafkaProducer;importorg.apache.kafka.clients.producer.ProducerRecord;importorg.apache.kafka.clients.producer.RecordMetadata;importorg.apache...
这里定义了 Kafka 连接器对应的主题(topic),Kafka 服务器,消费者组 ID,消费者起始模式以及表格式。需要特别说明的是,在 KafkaTable 的字段中有一个 ts,它的声明中用到了METADATA FROM,这是表示一个“元数据列”(metadata column),它是由 Kafka 连接器的元数据“timestamp”生成的。这里的 timestamp 其实就是 ...
import org.apache.kafka.clients.producer.KafkaProducer; import org.apache.kafka.clients.producer.ProducerRecord; import org.apache.kafka.clients.producer.RecordMetadata; import org.apache.kafka.common.serialization.StringSerializer; import java.util.Properties; import java.util.Random; /** * Created by ...
在Apache Flink SQL 上建立 Kafka 數據表讓我們在 Flink SQL 上建立 Kafka 數據表,然後選取 Flink SQL 上的 Kafka 數據表。您必須更新下列代碼段中的 Kafka 啟動程式伺服器 IP。SQL 複製 CREATE TABLE KafkaTable ( `userName` STRING, `visitURL` STRING, `ts` TIMESTAMP(3) METADATA FROM 'times...
package com.producers;import com.alibaba.fastjson.JSONObject;import com.pojo.Event;import com.pojo.WaterSensor;import org.apache.kafka.clients.producer.KafkaProducer;import org.apache.kafka.clients.producer.ProducerRecord;import org.apache.kafka.clients.producer.RecordMetadata;import org.apache.kafka.common...
如何创建 Kafka 表 以下示例展示了如何创建 Kafka 表: CREATETABLEKafkaTable ( `user_id`BIGINT, `item_id`BIGINT, `behavior` STRING, `ts`TIMESTAMP(3) METADATAFROM'timestamp')WITH('connector'='kafka','topic'='user_behavior','properties.bootstrap.servers'='localhost:9092','properties.group.id...
import org.apache.kafka.clients.producer.ProducerRecord; import org.apache.kafka.clients.producer.RecordMetadata; import org.apache.kafka.common.serialization.StringSerializer; import java.util.Properties; import java.util.Random; /** * Created by lj on 2022-07-09. ...
import org.apache.kafka.clients.producer.ProducerRecord; import org.apache.kafka.clients.producer.RecordMetadata; import org.apache.kafka.common.serialization.StringSerializer; import java.util.Properties; import java.util.Random; /** * Created by lj on 2022-07-09. ...
(2)定义一个kafka生产者 package com.producers;importcom.alibaba.fastjson.JSONObject;importcom.pojo.Event;importcom.pojo.WaterSensor;importorg.apache.kafka.clients.producer.KafkaProducer;importorg.apache.kafka.clients.producer.ProducerRecord;importorg.apache.kafka.clients.producer.RecordMetadata;importorg.apac...