Scala Oracle JDBC

Question

我在Scala中遇到了Module not found错误。我试图获得与Oracle的jdbc连接，加入两个表然后将其打印出来。

我的斯卡拉文件

import org.apache.spark.SparkContext 
import org.apache.spark.SparkContext._ 
import org.apache.spark.SparkConf 
import org.apache.spark.sql.SQLContext 

object sparkJDBC { 
    def main(args: Array[String]): Unit = { 
    val conf = new SparkConf().setAppName("Simple  
     Application").setMaster("local[2]").set("spark.executor.memory","1g") 
    val sc = new SparkContext(conf) 
    var sqlContext = new SQLContext(sc) 
    val chrttype = sqlContext.load("jdbc", 
     Map("url" -> "jdbc:oracle:thin:gductv1/gductv1@//localhost:1521/XE", 
     "dbtable" -> "chrt_typ")) 
    val clntlvl1 = sqlContext.load("jdbc", 
     Map("url" -> "jdbc:oracle:thin:gductv1/gductv1@//localhost:1521/XE", 
     "dbtable" -> "clnt_lvl1")) 
    val join2 = 
     chrttyp.join(clntlvl1,chrttyp.col("chrt_typ_key")===clntlvl1("lvl1_key")) 
    join2.foreach(println) 
    join2.printSchema() 
    } 
} 

我build.sbt文件

name := "sparkJDBC" 
    version := "0.1" 
    scalaVersion := "2.11.7" 

    libraryDependencies += "org.apache.spark" %% "spark-core" % "1.5.1" 
    libraryDependencies += "org.apache.tika" % "tika-core" % "1.11" 
    libraryDependencies += "org.apache.tika" % "tika-parsers" % "1.11" 
    libraryDependencies += "org.apache.hadoop" % "hadoop-client" % "2.7.1" 
    libraryDependencies += "org.apache.spark" % "spark-sql" % "1.0.0" 

错误文件是

[warn] module not found: org.apache.spark#spark-sql;1.0.0 
[warn] ==== local: tried 
[warn] C:\Users\.ivy2\local\org.apache.spark\spark-sql\1.0.0\ivys\ivy.xml 
[warn] ==== public: tried 
[warn] https://repo1.maven.org/maven2/org/apache/spark/spark-sql/1.0.0/spark-sql-1.0.0.pom 
[info] Resolving jline#jline;2.12.1 ... 
[warn] :::::::::::::::::::::::::::::::::::::::::::::: 
[warn] ::   UNRESOLVED DEPENDENCIES   :: 
[warn] :::::::::::::::::::::::::::::::::::::::::::::: 
[warn] :: org.apache.spark#spark-sql;1.0.0: not found 
[warn] :::::::::::::::::::::::::::::::::::::::::::::: 

[error] (*:update) sbt.ResolveException: unresolved dependency: org.apache.spark#spark-sql;1.0.0: not found 

请帮我找出是什么导致了这一点。

Answer 1

spark-sql是Scala库，如spark-core，所以你需要的组名和工件名之间%%以同样的方式。仅在它们之间使用%才能用于Java库。请参阅http://www.scala-sbt.org/0.13/docs/Cross-Build.html，因为您需要%%。

Answer 2

为了确保有一个正确的依赖，你可以使用网站像mvnrepository：https://mvnrepository.com/artifact/org.apache.spark/spark-sql_2.10/1.0.0

libraryDependencies += "org.apache.spark" % "spark-sql_2.10" % "1.0.0"