Flink 系例 之 TableAPI & SQL 與 MYSQL 插入數據

使用Tbale&SQL與Flink JDBC連接器將數據插入MYSQL數據庫表

示例環境

java.version: 1.8.x
flink.version: 1.11.1
kafka：2.11

示例數據源 （項目碼雲下載）

Flink 系例 之 搭建開發環境與數據

示例模塊 （pom.xml）

Flink 系例 之 TableAPI & SQL 與 示例模塊

InsertToMysql.java

package com.flink.examples.mysql;

import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.table.api.EnvironmentSettings;
import org.apache.flink.table.api.StatementSet;
import org.apache.flink.table.api.TableResult;
import org.apache.flink.table.api.bridge.java.StreamTableEnvironment;

/**
 * @Description 使用Tbale&SQL與Flink JDBC連接器將數據插入MYSQL數據庫表
 */
public class InsertToMysql {
    /**
     官方參考：https://ci.apache.org/projects/flink/flink-docs-release-1.11/dev/table/connectors/jdbc.html
     */
    //flink-jdbc-1.11.1寫法,所有屬性名在JdbcTableSourceSinkFactory工廠類中定義
    static String table_sql =
            "CREATE TABLE my_users (\n" +
            "  id BIGINT,\n" +
            "  name STRING,\n" +
            "  age INT,\n" +
            "  status INT,\n" +
            "  PRIMARY KEY (id) NOT ENFORCED\n" +
            ") WITH (\n" +
            "  'connector.type' = 'jdbc',\n" +
            "  'connector.url' = 'jdbc:mysql://192.168.110.35:3306/flink?useUnicode=true&characterEncoding=utf-8', -- 數據庫需建立 \n" +
            "  'connector.driver' = 'com.mysql.jdbc.Driver', \n" +
            "  'connector.table' = 'users', -- 已知的表 \n" +
            "  'connector.username' = 'root',\n" +
            "  'connector.password' = 'password' \n" +
            ")";

    public static void main(String[] args) throws Exception {
        //構建StreamExecutionEnvironment
        StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
        //構建EnvironmentSettings 並指定Blink Planner
        EnvironmentSettings bsSettings = EnvironmentSettings.newInstance().useBlinkPlanner().inStreamingMode().build();
        //構建StreamTableEnvironment
        StreamTableEnvironment tEnv = StreamTableEnvironment.create(env, bsSettings);
        //註冊mysql數據維表
        tEnv.executeSql(table_sql);

        //執行SQL,id=0是因id字段爲自增主鍵，爲0則mysql識別會默認自增值代替
        String sql = "insert into my_users (id,name,age,status) values(0,'tom',31,0)";

        // 第一種方式：直接執行sql
//        TableResult tableResult = tEnv.executeSql(sql);

        //第二種方式：聲明一個操作集合來執行sql
        StatementSet stmtSet = tEnv.createStatementSet();
        stmtSet.addInsertSql(sql);
        TableResult tableResult = stmtSet.execute();

        tableResult.print();
    }
}

 打印結果

+-------------------------------------------+
| default_catalog.default_database.my_users |
+-------------------------------------------+
|                                        -1 |
+-------------------------------------------+
1 row in set