flinksql如何链接kafka

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    4.0.0

    org.example
    flinksqldemo
    1.0-SNAPSHOT


    
        
        UTF-8
        UTF-8

        2.11
        2.11.8
        0.10.2.1
        1.12.0
        2.7.3

        
        compile
    

    
        
            
                org.apache.maven.plugins
                maven-compiler-plugin
                
                    8
                    8
                
            
        
    



    
        
        
            org.apache.flink
            flink-table-planner-blink_2.11
            1.12.0

        

        
            org.apache.flink
            flink-java
            ${flink.version}
            ${setting.scope}
        
        
            org.apache.flink
            flink-streaming-java_2.11
            ${flink.version}
            ${setting.scope}
        
        
            org.apache.flink
            flink-clients_2.11
            ${flink.version}
            ${setting.scope}
        


        
            org.apache.flink
            flink-connector-kafka_2.11
            1.12.0
        
        
            org.apache.flink
            flink-csv
            1.12.0
        

        
            org.apache.flink
            flink-streaming-scala_${scala.binary.version}
            ${flink.version}
            ${setting.scope}
        

        
        

        
        
            org.apache.kafka
            kafka_${scala.binary.version}
            ${kafka.version}
            ${setting.scope}
        
        

        
        
            org.apache.hadoop
            hadoop-common
            ${hadoop.version}
            ${setting.scope}
        
        
            org.apache.hadoop
            hadoop-hdfs
            ${hadoop.version}
            ${setting.scope}
        
        
            org.apache.hadoop
            hadoop-client
            ${hadoop.version}
            ${setting.scope}
        
        

        
            org.slf4j
            slf4j-api
            1.7.25
        
        
            com.alibaba
            fastjson
            1.2.72
        
        
            redis.clients
            jedis
            2.7.3
        
        
            com.google.guava
            guava
            29.0-jre
        

    

代码：

package com.jd.data;

import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.table.api.DataTypes;
import org.apache.flink.table.api.Table;
import org.apache.flink.table.api.bridge.java.StreamTableEnvironment;
import org.apache.flink.table.descriptors.Csv;
import org.apache.flink.table.descriptors.Kafka;
import org.apache.flink.table.descriptors.Schema;
import org.apache.flink.types.Row;

public class TableApiConnectKafka04 {

    public static void main(String[] args) throws Exception {
        StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
        env.setParallelism(1);


//        1、创建表执行环节
        StreamTableEnvironment tableEnv = StreamTableEnvironment.create(env);

          tableEnv.connect(new Kafka()
                .version("0.11") // 定义版本
                .topic("xxx") // 定义主题
                .property("zookeeper.connect", "localhost:2181")
                .property("bootstrap.servers", "localhost:9092")
        ).withFormat(new Csv()).withSchema(new Schema().field("a", DataTypes.STRING())  // 定义表的结构
                  .field("b", DataTypes.STRING())
                  .field("c", DataTypes.STRING())

          )
                  .inAppendMode()
                  .createTemporaryTable("xxx");

        Table xxx = tableEnv.from("xxx");

        xxx.printSchema();

        tableEnv.toAppendStream(xxx,  Row.class ).print();

        env.execute("job");
    }
}

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