Spark 2.X 读写 Oracel 代码实例 作者：刘大少

import org.apache.spark.sql.{SaveMode, SparkSession}
import org.apache.spark.sql.jdbc.JdbcDialects
import org.apache.spark.sql.jdbc._
import org.apache.spark.sql.types._

一、读Oracle 表

// 参数自己传进来

1、定义map 

val odbcMap = Map("url" -> URL,
      "user" -> USER,
      "password" -> PWD,
      "dbtable" -> readOracelTbaleName,
      "driver" -> DRIVER"
    )

2、直接读放入内存注册临时表
val t_odbc= "t_odbc"
session.read.options(odbcMap).format("jdbc").load().cache().createTempView(t_odbc)


二、写入Oracel

val connectProperties = new Properties()
 connectProperties.put("user", USER)
 connectProperties.put("password", PWD) connectProperties.put("driver", DRIVER)

//oracel 里的这个表writeOracelTbaleName一定不要建，自己建的插不进去数据
​​​​​​​df.write.mode("append").jdbc(URL,writeOracelTbaleName,connectProperties)