如何在项目中引用flink cdc
时间: 2023-10-20 18:04:59 浏览: 102
在项目中引用 Flink CDC,需要进行以下步骤:
1. 在项目的 pom.xml 中添加 Flink CDC 的依赖,在依赖中指定版本号:
```xml
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-connector-kafka_2.12</artifactId>
<version>${flink.version}</version>
</dependency>
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-connector-kafka-source</artifactId>
<version>${flink.version}</version>
</dependency>
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-connector-jdbc</artifactId>
<version>${flink.version}</version>
</dependency>
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-json</artifactId>
<version>${flink.version}</version>
</dependency>
```
2. 在 Flink 程序中引用 CDC 相关 API:
```java
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumer;
public class CDCExample {
public static void main(String[] args) throws Exception {
// set up the execution environment
final StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
// set up the Kafka consumer
Properties properties = new Properties();
properties.setProperty("bootstrap.servers", "localhost:9092");
properties.setProperty("group.id", "test");
FlinkKafkaConsumer<String> consumer = new FlinkKafkaConsumer<>("topic", new SimpleStringSchema(), properties);
// add the CDC source to the execution environment
env.addSource(consumer).print();
// execute the Flink program
env.execute("Flink CDC example");
}
}
```
在这个例子中,我们使用 FlinkKafkaConsumer 作为 CDC 的源,将 Kafka 中的数据读入 Flink 程序中进行处理。需要根据实际情况自行修改配置和代码。
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