下面是一个完整的 Flink 程序,展示如何使用 Flink SQL 将流数据写入 MySQL Sink。 importorg.apache.flink.api.common.serialization.SimpleStringSchema;importorg.apache.flink.streaming.api.datastream.DataStream;importorg.apache.flink.streaming.api.environment.StreamExecutionEnvironment;importorg.apache.flink.streaming...
因为在我们的WordWithCount计算中,执行的SQL语句对表的操作不是单纯insert插入,所以我们需要编写实现RetractStreamTableSink的用户自定义函数: public class MyRetractStreamTableSink implements RetractStreamTableSink<Row> { private TableSchema tableSchema; //构造函数,储存TableSchema public MyRetractStreamTableSink(Str...
Flink sql 任务 实时写入 多端 mysql 数据库,报编码集问题,具体报错内容如下 Caused by: java.sql.BatchUpdateException: Incorrect string value: '\xF0\x9F\x94\xA5' for column 'xxxxx' at row 1 at com.mysql.jdbc.PreparedStatement.executeBatchSerially(PreparedStatement.java:2028) at com.mysql.jdbc.P...
})//.addSink(new MysqlSink1).writeUsingOutputFormat(newMysqlSink1) MysqlSink1 importjava.sql.{Connection, DriverManager, PreparedStatement, SQLException}importorg.apache.flink.api.common.io.OutputFormatimportorg.apache.flink.configuration.Configurationimportorg.slf4j.{Logger, LoggerFactory}classMysqlSink1ex...
Flink--基于mysql的sink和source 基于mysql的source操作 object MysqlSource { def main(args: Array[String]): Unit={ val env=StreamExecutionEnvironment.getExecutionEnvironment val source: DataStream[Student]= env.addSource(newSQL_source) source.print()...
"'connector.write.flush.max-rows'='1'\r\n" + ")"; System.err.println(ddl); ste.executeSql(ddl); String insert = "insert into flinksinksds(componentname,componentcount,componentsum)" + "values('1024', 1 , 2 )"; ste.executeSql(insert); env.execute(); Syste...
在 SQL 中是⽤ SQL 中的 LATERAL TABLE(<TableFunction>) 配合 JOIN 、 LEFT JOIN xxx ON TRUE ...
新建一个scala object 类,JdbcSink package com.mafei.sinktest import java.sql.{Connection, DriverManager, PreparedStatement} import org.apache.flink.configuration.Configuration import org.apache.flink.streaming.api.functions.sink.RichSinkFunction import org.apache.flink.streaming.api.scala.{StreamExecutionEnvi...
*/object FlinkSQLSSourceFileSinkMySQL{defmain(args:Array[String]):Unit={// 构建运行环境val env=StreamExecutionEnvironment.getExecutionEnvironment// 构建表运行环境val tableEnv=StreamTableEnvironment.create(env)// 读取文件数据tableEnv.connect(newFileSystem().path("./data/user.txt")).withFormat(new...